Tag: University of Bristol

Why is the UK interested in volcanoes? We don’t have any of our own!

Posted on by janet.crompton
Eruption column from the explosive phase of the Eyjafjallajokull eruption drifting over a farm  – image by Bristol volcanologist Susanna Jenkins
The University of Bristol’s volcanology group has been awarded the Queen’s Anniversary Prize for its contribution to research excellence. The Queens Anniversary Prize is the most prestigious form of national recognition an institution can receive. When I tell members of the public that, not only am I a volcanologist, but that I am part of the one of the largest and most successful volcanology groups in the world, the first reaction is always surprise: ‘Why is the UK interested in volcanoes? We don’t have any of our own!’

They are right of course, the Bristol volcanology group spends its time travelling all over the world to address volcanic risk in many countries, from the first to the third world. When one looks back on volcanic eruptions in recent history, especially the big, memorable ones like Mount St Helens, Eyjafjallajokull and Montserrat one realises that Bristol volcanologists were there at every stage.

There are, of course, many layers to handling a volcanic crisis. First there’s initial monitoring; will this volcano erupt at all? Often this involves going to volcanoes that have been little studied in remote places, or monitoring them from satellites: something which Bristol volcanology has taken in its stride, by trailblazing projects on understudied African volcanism.

InSAR image showing volcanic uplift in the Great Rift Valley as part of research by Bristol volcanologist Juliet Biggs
Then there’s handling eruptions as they happen. Who will be affected? What are the primary risks? How should we respond to the media? Bristol has a glowing history of aiding in volcanic crisis by supplying the information when the world needs it. During the 2010 Eyjafjallajokull ash and aviation crisis, Bristol led the way in supplying expert opinion on managing the situation.

Still there is no rest for our volcanologists. Afterwards there’s the post-eruption work: Working out what made the volcano erupt and understanding the physical processes surrounding an event. How does it fit into the wider setting? Are the volcanoes linked? These questions have been asked and answered by our volcanologists who have also reached out to form a global database with other institutions. This has resulted in more cohesion in the community, and a greater understanding of how volcanoes interact.

A wealth of different specialities have populated the group since it was started by Professor Steve Sparks  including petrologists, geophysicists and geochemists. It is a result of this diverse environment that Bristol has been able to excel in so many areas. With natural hazards occurring on a near-daily basis, it’s safe to say the group has played its part in reducing the uncertainty of volcanic hazard across the globe.  The Queen’s Anniversary Prize is an amazing recognition of the work that has been done over the years and a well-deserved reward for the hard work of the Bristol volcanologists.

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This blog is written by Cabot Institute member Keri McNamara, a PhD student in the School of Earth Sciences at the University of Bristol.

Natural Systems and Processes Poster Session

Posted on by janet.crompton
Natural Systems and Processes Poster Session 2015. Image credit Amanda Woodman-Hardy

The Natural Systems and Processes Poster Session (NSPPS) is, it appears, now quite an establishment in Bristol: 2016 will be the event’s ninth year. What is it, and what has secured its place in the University of Bristol calendar for all these years?

Well, as the name suggests, it is an academic poster session welcoming pretty much anything relating to the science of the natural world. It turns out this description covers a lot of science, with representatives from Earth Sciences, Geographical Sciences, Physics, Life Sciences, Engineering, Chemistry and Mathematics. It’s a fascinating melting pot of ideas with some quirky and abstract topics on show, but each being a tiny, crucial cogwheel in the Earth’s system. The range of topics can show off the University’s diverse scientific community, spark collaborations and simply baffle all at the same time.

Besides the ‘boring’ scientific part of the event, NSPPS is a great occasion. Set in the Wills Memorial Building Great Hall, there is a plentiful stock of free food and drink and the social side of the event is great. Often the people carrying out the research are even more colourful than the science itself (especially after some free drinks). The social side also ensures the whole event is very relaxed, making it a great opportunity to get some practice and early feedback on your poster and presentation skills before taking on external conferences. Maybe you’re thinking of going to EGU in April? Then this is the perfect warm up. Added to that, there is healthy competition with entrants battling it out for a series of prizes from staff and student votes for the best posters. They’re proper prizes too (I can verify, last year I won an Acer tablet for the staff vote), so it’s definitely worth entering!

So here’s why NSPPS is still live and kicking after 9 years: diverse science, diverse people, laid back atmosphere, prizes and (of course) free food and drink.

Where? When? Great Hall, Wills Memorial Building. 2 pm – 5 pm, Monday 7 March.
Abstract submission deadline: midnight, Friday 29 February.
Full details at https://tiny.cc/nspps
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This blog is written by Alan Kennedy from the School of Geographical Sciences at the University of Bristol.  This blog post was edited from Alan’s blog post at Ezekial Boom.

Alan Kennedy

 

 

Ancient ‘dead seas’ offer a stark warning for our own near future

Posted on by janet.crompton
Bristol during the pleiocene as envisaged by Lucas Antics.

The oceans are experiencing a devastating combination of stresses. Rising CO2 levels are raising temperatures while acidifying surface waters.  More intense rainfall events, deforestation and intensive farming are causing soils and nutrients to be flushed to coastal seas. And increasingly, the oceans are being stripped of oxygen, with larger than expected dead zones being identified in an ever broadening range of settings. These dead zones appear to be primarily caused by the runoff of nutrients from our farmlands to the sea, but it is a process that could be exacerbated by climate change – as has happened in the past.

Recently, our group published a paper about the environmental conditions of the Zechstein Sea, which reached from Britain to Poland 270 million years ago. Our paper revealed that for tens of thousands of years, some parts – but only parts – of the Zechstein Sea were anoxic (devoid of oxygen). As such, it contributes to a vast body of research, spanning the past 40 years and representing the efforts of hundreds of scientists, which has collectively transformed our understanding of ancient oceans – and by extension future ones.

The types of processes that bring about anoxia are relatively well understood. Oxygen is consumed by animals and bacteria as they digest organic matter and convert it into energy. In areas where a great deal of organic matter has been produced and/or where the water circulation is stagnant such that the consumed oxygen cannot be rapidly replenished, concentrations can become very low. In severe cases, all oxygen can be consumed rendering the waters anoxic and inhospitable to animal life.  This happens today in isolated fjords and basins, like the Black Sea.  And it has happened throughout Earth history, allowing vast amounts of organic matter to escape degradation, yielding the fossil fuel deposits on which our economy is based, and changing the Earth’s climate by sequestering what had once been carbon dioxide in the atmosphere into organic carbon buried in sediments.

Red circles show the location and size of many dead zones. Black dots show Ocean dead zones of unknown size. Image source: Wikimedia Commons/NASA Earth Observatory

In some cases, this anoxia appears to have been widespread; for example, during several transient Cretaceous events, anoxia spanned much of what is now the Atlantic Ocean or maybe even almost all of the ancient oceans. These specific intervals were first identified and named oceanic anoxic events in landmark work by Seymour Schlanger and Hugh Jenkyns.  In the 1970s, during the earliest days of the international Deep Sea Drilling Program (now the International Ocean Discovery Program, arguably the longest-running internationally coordinated scientific endeavor), they were the first to show that organic matter-rich deep sea deposits were the same age as similar deposits in the mountains of Italy. Given the importance of these deposits for our economy and our understanding of Earth and life history, scientists have studied them persistently over the past four decades, mapping them across the planet and interrogating them with all of our geochemical and palaeontological resources.

In my own work, I have used the by-products of certain bacterial pigments to interrogate the extent of that anoxia.  The organisms are green sulfur bacteria (GSB), which require both sunlight and the chemical energy of hydrogen sulfide in order to conduct a rather exotic form of bacterial photosynthesis; crucially, hydrogen sulfide is only formed in the ocean from sulfate after the depletion of oxygen (because the latter yields much more energy when used to consume organic matter). Therefore, GSB can only live in a unique niche, where oxygen poor conditions have extended into the photic zone, the realm of light penetration at the very top of the oceans, typically only the upper 100 m.  However, GSB still must compete for light with algae that live in even shallower and oxygen-rich waters, requiring the biosynthesis of light harvesting pigments distinct from those of plants, the carotenoids isorenieratene, chlorobactene and okenone. For the organism, this is an elegant modification of a molecular template to a specific ecological need. For the geochemist, this is an astonishingly fortuitous and useful synthesis of adaptation and environment – the pigments and their degradation products can be found in ancient rocks, serving as molecular fossil evidence for the presence of these exotic and diagnostic organisms.

And these compounds are common in the black shales that formed during oceanic anoxic events.  And in particular, during the OAE that occurred 90 million years ago, OAE2, they are among the most abundant marker compounds in sediments found throughout the Atlantic Ocean and the Tethyan Ocean, what is now the Mediterranean Sea.  It appears that during some of these events anoxia extended from the seafloor almost all the way to the ocean’s surface.

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Today, the deep sea is a dark and empty world. It is a world of animals and Bacteria and Archaea – and relatively few of those. Unlike almost every other ecosystem on our planet, it is bereft of light and therefore bereft of plants.  The animals of the deep sea are still almost entirely dependent on photosynthetic energy, but it is energy generated kilometres above in the thin photic zone. Beneath this, both animals and bacteria largely live off the scraps of organic matter energy that somehow escape the vibrant recycling of the surface world and sink to the twilight realm below. In this energy-starved world, the animals live solitary lives in emptiness, darkness and mystery. Exploring the deep sea via submersible is a humbling and quiet experience.  The seafloor rolls on and on and on, with only the occasional shell or amphipod or small fish providing any evidence for life.

“Krill swarm” by Jamie Hall – NOAA. Licensed under Public Domain via Wikimedia Commons

And yet life is there.  Vast communities of krill thrive on the slowly sinking marine snow, can appear.  Sperm whales dive deep into the ocean to consume the krill and emerge with the scars of fierce battles with giant squid.  And when one of those great creatures dies and its carcass plummets to the seafloor, within hours it is set upon by sharks and fish, ravenous and emerging from the darkness for the unexpected feast. Within days the carcass is stripped to the bones but even then new colonizing animals arrive and thrive. Relying on bacteria that slowly tap the more recalcitrant organic matter that is locked away in the whale’s bones, massive colonies of tube worms spring to life, spawn and eventually die.

But all of these animals, the fish, whales, tube worms and amphipods, depend on oxygen. And the oceans have been like this for almost all of Earth history, since the advent of multicellular life nearly a billion years ago.

This oxygen-replete ocean is an incredible contrast to the north Atlantic Ocean during at least some of these anoxic events. Then, plesiosaurs, ichthyosaurs and mosasaurs, feeding on magnificent ammonites, would have been confined to the sunlit realm, their maximum depth of descent marked by a layer of surprisingly pink and then green water, pigmented by the sulfide consuming bacteria.  And below it, not a realm of animals but a realm only of Bacteria and Archaea, single-celled organisms that can live in the absence of oxygen, a transient revival of the primeval marine ecosystems that existed for billions of years before more complex life evolved.

We have found evidence for these types of conditions during numerous events in Earth history, often associated with major extinctions, including the largest mass extinction in Earth history – the Permo-Triassic Boundary 252 million years ago.  Stripping the ocean of oxygen and perhaps even pumping toxic hydrogen sulfide gas into the atmosphere is unsurprisingly associated with devastating biological change.   It is alarming to realise that under the right conditions our own oceans could experience this same dramatic change.  Aside from its impact on marine life, it would be devastating for us, so dependent are we on the oceans for our food.

The conventional wisdom has been that such extreme anoxia in the future is unlikely, that Cretaceous anoxia was a consequence of a markedly different geography.  North America was closer to Europe and South America only completely rifted from Africa about 150 million years ago; the ancient Atlantic Ocean was smaller and more restricted, lending itself to these extreme conditions.

And yet questions remain.  What was their trigger?  Was it really a happenstance of geography?  Or was it due to environmental perturbations? And how extensive were they? The geological record preserves only snapshots, limiting the geographical window into ancient oceans, and this is a window that narrows as we push further back in time. In one of our recent papers, we could not simulate such severe anoxia in the Atlantic Ocean without also simulating anoxia throughout the world’s oceans, a truly global oceanic anoxic event.  However, that model can only constrain some aspects of ocean circulation and there are likely alternative mechanisms that confine anoxia to certain areas.

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Over the past twenty years, these questions have intersected one another and been examined again and again via new models, new geochemical tools and new ideas.  And an emerging idea is that the geography of the Mesozoic oceans was not as important as we have thought.

That classical model is that ancient oceans, through a combination of the aforementioned restricted geography and overall high temperatures, were inherently prone to anoxia.  In an isolated Atlantic Ocean, oxygen replenishment of the deep waters would have been much slower.  This would have been exaggerated by the higher temperatures of the Cretaceous, such that oxygen solubility was lower (i.e. for a given amount of oxygen in the atmosphere, less dissolves into seawater) and ocean circulation was more sluggish. Consequently, these OAEs could have been somewhat analogous to the modern Black Sea.  The Black Sea is a restricted basin with a stratified water column, formed by low density fresh water derived from the surrounding rivers sitting stably above salty and dense marine deep water. The freshwater lid prevents mixing and prevents oxygen from penetrating into deeper waters. Concurrently, nutrients from the surrounding rivers keep algal production high, ensuring a constant supply of sinking organic matter, delicious food for microbes to consume using the last vestiges of oxygen.  The ancient oceans of OAEs were not exactly the same but perhaps similar processes were operating. Crucially, the configuration of ancient continents in which major basins were isolated from one another, suggests a parallel between the Black Sea and the ancient North Atlantic Ocean.

But over the past twenty years, that model has proved less and less satisfactory.  First, it does not provide a mechanism for the limited temporal occurrence of the OAEs.  If driven solely by the shape of our oceans and the location of our continents, why were the oceans not anoxic as the norm rather than only during these events? Second, putative OAEs, such as that at the Permo-Triassic Boundary occur at times when the oceans do not appear to have been restricted.  Third, coupled ocean-atmosphere models indicate that although ocean circulation was slower under these warmer conditions, it did not stop.

But also, as we have looked more and more closely at those small windows into the past, we have learned that during some of these events anoxia was more restricted to coastal settings.  And that brings us back to the Zechstein Sea. We mapped the extent of anoxia at an unprecedented scale in cores drilled by the Polish Geological Survey, and we discovered an increasing abundance of GSB molecular fossils in rocks extending from the carbonate platform and down the continental slope, suggesting that anoxia had extended out into the wider sea.  But when we reached the deep central part of the basin, the fossils were absent.  In fact, the sediments contained the fossils of benthic foraminifera, oxygen dependent organisms living at the seafloor, and the sediments had been bioturbated, churned by ancient animals. The green sulfur bacteria and the anoxia were confined to the edge of the basin, completely unlike the Black Sea.  This is not the first such observation and this is consistent with new arguments mandating not only a different schematic but also a different trigger.  And perhaps that trigger was from outside of the oceans.

If the trigger was not solely a restriction of oxygen supply then the alternative is that it was an excess of organic matter, the degradation of which consumed the limited oxygen. A likely source of that organic matter and one that is consistent with restriction of anoxia to ocean margins is a dramatic increase in nutrients that stimulated algal blooms – much like what is occurring today.  And that increase in nutrients, as elegantly summarized by Hugh Jenkyns, could have been caused by an increase in erosion and chemical weathering, driven by higher carbon dioxide concentrations, global warming and/or changes in the hydrological cycle, all of which we now know occurred prior to several OAEs. And again, similar to what is occurring today.

It is likely that today’s coastal dead zones are due not to climate change but to how we use our land and especially to our excess and indiscriminate use of fertilisers, most of which does not help crops grow or enhance our soil quality but is instead washed away to pollute our rivers and coastal seas. And yet that only underscores the lessons of the past.  They suggest that global warming might exacerbate the impacts of our poor land management, adding yet another pressure to an already stressed ecosystem.

Runoff of soil and fertiliser  during a rain storm. Image source: Wikimedia Commons

The Zechstein Sea study is not the key to this new paradigm (and that ‘paradigm’ is far from settled).  There is probably no single study that marked our change in understanding.  Instead, this new model has been gradually emerging over nearly 20 years, as long as I have been studying these events. New geochemical data, such as the distribution of nutrient elements, suggest that many of these anoxic episodes, whether local or global, were associated with algal blooms.  And other geochemical tools, such as the isotopic composition of trace metals, provide direct evidence for changes in the chemical weathering that liberated the bloom-fueling nutrients.

Science can move in monumental leaps forward but more typically it evolves in small steps. Sometimes, after years of small steps, your understanding has fundamentally changed. And sometimes that change means that your perception of the world, the world you love and on which you depend, has also changed.  You realize that it is more dynamic than you thought – as is its vulnerability to human behaviour.
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This blog is by Prof Rich Pancost, Director of the Cabot Institute at the University of Bristol. 
A shortened version of this blog can be found on The Conversation.
Prof Rich Pancost

This blog has also appeared in IFL Science and The Ecologist.

New Year’s message from the Director of the University of Bristol’s Cabot Institute

Posted on by janet.crompton

At the start of a new year, I wanted to acknowledge the achievements of our colleagues at the University of Bristol’s Cabot Institute over the past year and to summarise our priorities for 2016.

Cabot Institute members celebrating Cabot’s 5th birthday at the University of Bristol.

2015 was a genuinely historical year for the Cabot Institute and for Bristol. I do not use that term lightly.  During the year in which the Institute celebrated its 5th anniversary, many of us worked extensively with the City to host the European Green Capital and contribute substantively to the Paris Climate summit. We raised our profile both in the city and internationally, directly showcasing Cabot Institute research to over 100,000 people – and far more if we include coverage in the national and international press.

This was happening against a background of collaborative activity that included the funding of UKCRIC (UK Collaboratorium for Research in Infrastructure & Cities) and the launch of Bristol is Open; new initiatives in Anticipation, sustainable livestock, Global Insecurities, urban pollinators, and flood forecasting; and new investment in a radiocarbon accelerator, the Nuclear Hub, and high performance computing. Collectively, these efforts and the Green Capital engagement served as the platform for solidifying the University’s relationship with our city.  It is clear that a strong partnership with a thriving and global city will be essential for UK HEIs in the coming decade, and we are proud that so many members of the Cabot Institute have contributed to that.  We have partnered in events, served on strategic working groups, consulted, advised, fostered debate and provided research that is currently being used to frame the city’s strategy and policies.

All of that occurred alongside Hugh Brady’s arrival, joining as the new Vice Chancellor (VC), and the University-wide strategic review. I cannot stress enough how impressed our new VC is with all aspects of our environmental, risk and sustainability research as well as the quality and ambition of our partners and the leadership (at all levels) in the city.  It seemed that every new initiative was followed by a new award (and particular kudos to the volcanologists! And to Eric Herring and Somalia First!  And to many others!). All of that required a huge amount of effort from many of you. Thank you and well done!  And of course, special thanks to the entire Cabot team, who achieved this while helping the university manage personnel reshuffling and while directly contributing their time to the Strategic Review.  Cabot has emerged as a central component of the University strategy and its vision; that derives primarily from the excellence of the academics working in the Cabot space (and rightly so!) but also the incredible flexibility and hard work of Hayley Shaw, Amanda Woodman-Hardy, Amanda Gray, Philippa Bayley, Mike Harris and Caroline Bird.  Thanks gang!

Arising from that, all of us will have exciting new opportunities in 2016 and beyond.  We will support Hugh and our City. We will consolidate the partnerships initiated during the Green Capital year – not just with Bristol City Council but with numerous other local partners. Crucially, we will use this as a platform to raise our national visibility.

Having said that, we will be less ‘event-focussed’ in 2016 and put more effort into supporting Cabot’s academic community and key partners proposals and initiatives.  We did that last year, but it was impacted by the plethora of Green Capital activity; our support of your ideas will receive renewed focus this year.  This is one reason why we are so excited to have been able to keep Hayley on the team upon Philippa’s return and that we were able to extend Mike’s contract. Both will be in place to work with you to develop proposals, host visitors and secure partners.

We will also be putting renewed effort into building connections across our community. We will be building the Global Development working group and working with the other URIs to host workshops around inequality and resilience. We will be working even more closely with our Theme Leads – especially with John Beddington and a reconfigured Advisory Board – to stimulate new discussions and identify the areas where we can best support our members.

Finally, as Cabot contributes to the implementation of the new University Strategy, we will spend more time consulting our members, ensuring we are properly representing your priorities and making the most of the opportunities arising over the next decade.

We have learned a lot and built a very strong Institute over our first five years; we intend to use 2016 to explore Cabot members’ needs and opportunities so that we can grow the right way over the next five years.

These are exciting times in the University and we are proud to represent areas of great research strength. It is clear that the suite of environmental, risk, sustainability and future cities research that Cabot comprises will be at the heart of the University’s research strategy over the next decade – but also part of its institutional, international and teaching strategy.  We are all looking forward to working together to achieve this.
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This blog is by Prof Rich Pancost, Director of the Cabot Institute at the University of Bristol. 
Prof Rich Pancost

COP21 reflections: What next for the University of Bristol?

Posted on by janet.crompton

If you have read my previous blogs on my COP21 reflections (see links at bottom of this blog), that brings us to the University of Bristol and the Cabot Institute.  I hope that this year we also have made some steps towards being a trusted participant in shaping our city’s future. I have lived here over 15 years and so I know that has not always been the case.

We must contribute via our role as a business.  With the NHS, we are the largest employer in the city and our behaviour should lead by example.  This is why we have developed a district energy strategy with BCC and the NHS.  This is why we are planting trees all over the city.  That is why we collaborate with Bristol City Council and fund community initiatives. But we do need to do more.  We will be judged on how we build our next buildings.  We will be judged on how we procure our goods. We will be judged on how we engage with the other citizens of Bristol.

We must contribute via our role as an educational institution.  We are already committed to pan-University Education for Sustainable Development (and thanks again to Chris Willmore for championing that). Now we are exploring a new initiative to build sustainability, enterprise and global citizenship across the student experience; those of us in the Cabot Institute are very excited to have been asked to play a role in translating our ambitions for multidisciplinary, challenge-driven, environmental research to our Undergraduates.

Students working with a local organisation in Bedminster, Bristol.

Of course, those students are driving us as often as we are leading them!  In the words of Hannah Tweddell of Bristol’s Student Union:

‘Our students and young people are the future. We’ve seen the amazing work they’ve done in partnership, helping Bristol Green Capital transition towards a more sustainable inclusive city. We’re committed to getting 100,000 hours of student engagement with the city to help make our city more sustainable every year – real action on the ground to tackle climate change, inequality and sustainability.’

And finally, the Cabot Institute will continue to conduct ambitious research in this area. Being at COP21 with Bristol City Council showed me the power of academic contributions.  Our Mini-Stern review and the STEEP Project sit at the foundation of Bristol’s Climate Change and Energy Security Framework.  Bristol is Open was repeatedly cited as an exemplar in Future Cities thinking. These partnerships were embedded in the argument by ICLEI and others that cities must be taken seriously as partners in this endeavour. Our climate change research was also on display and invoked at key stages as ambitions were raised.

It is not all about the Cabot Institute.  Sustainability policy is increasingly linked to health issues, whether it be the benefits of cycling and walking or of cleaner air; as such, the Elizabeth Blackwell Institute is also a central part of this conversation. The Brigstow Institute will explore the role of self, identity and community in the 21st century, issues that will be central to the social transformations that the Paris Agreement requires.  And there is no doubt that Big Data will be key to understanding, managing and navigating the future city; our new Institute (currently the Bristol Institute for Data Intensive Research) is poised to make major contributions.

Our research must continue and become more ambitious because we do not have all of the solutions – yet. So we will continue to innovate, whether it be exciting new functional nanomaterials to underpin the next generation of renewable technology or the mathematical expertise that will help us best extract tidal power from the Severn. We will have to help explore new financing tools to fund a new kind of global development; and there is a role for Bristol in shaping the emerging new forms of governance and economy. But new solutions require an engaged and interested public – and we do not intend to develop them in isolation or in our old disciplinary silos.

As our train pulled into Temple Meads, Alex Minshull told me that what he took from the Conference was a renewed awareness of what he already knew – do not get ‘locked in’ to the future you do not want. We must make the right choices today, choices that do not pile future carbon debt onto the future.  We must invest in our young people today so that they are prepared to lead tomorrow.  We must invest in new technology today so that it is ready when we need it.

It starts today.

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Prof Rich Pancost

This blog is by Prof Rich Pancost, Director of the Cabot Institute at the University of Bristol.  

For more information about the University of Bristol at COP21, please visitbristol.ac.uk/green-capital

Other blogs in this COP21 reflections series include:

What have we achieved and how do we go forward?
What next for our planet?
What next for Bristol?
What next for the University of Bristol?

This blog is part of a COP21 daily report series. View other blogs in the series below:

COP21 daily report: The need for innovation (but do not call it innovation)

Posted on by janet.crompton
Cabot Institute Director Professor Rich Pancost will be attending COP21 in Paris as part of the Bristol city-wide team, including the Mayor of Bristol, representatives from Bristol City Council and the Bristol Green Capital Partnership. He and other Cabot Institute members will be writing blogs during COP21, reflecting on what is happening in Paris, especially in the Paris and Bristol co-hosted Cities and Regions Pavilion, and also on the conclusion to Bristol’s year as the European Green Capital.  Follow #UoBGreen and #COP21 for live updates from the University of Bristol.  All blogs in the series are linked to at the bottom of this blog.

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For the past two days, a delegation of us have been representing Bristol City Council and a group of Bristol businesses at the Sustainable Innovation Forum (SIF) at Paris.  Our group included Bristol Mayor George Ferguson, who spoke on Tuesday; Amy Robinson, of Low Carbon Southwest and the driver behind the Go Green business initiative; Bristol City Council representatives Stephen Hillton and Mhairi Ambler; and Ben Wielgus of KPMG and Chris Hayes of Skanska, both Bristol Green Capital sponsors.

This was the COP21 ‘Business event’ and aspects of this have been rather sharply targeted by Paris activists. There is a legitimate question of whether corporate sponsors are engaging in greenwashing, but this was not my perception from inside Le Stade de France.  There were some major fossil fuel dependent or environmentally impactful companies in attendance, but they seemed genuinely committed to reducing their environmental impact.  Their actions must be transparent and assessed, and like all of us, they must be challenged to go further. This is why it was fantastic that Mindy Lubber, President of Ceres, was speaking. Ceres is a true agent of change, bringing a huge variety of businesses into the conversation and working with them to continually raise ambitions.

The majority of these businesses, just like those that attended Bristol’s Business Summit in October, are clearly and objectively devoted to developing new technologies to address the world’s challenges,. Whether it be new solar tech that will underpin the PVC of 2050 or innovative new ways to deploy wind turbines cheaply and effectively in small African villages, it is no longer ‘business’ that is holding back climate action and in many cases they are leading it.

And we need them to do so.  We need them to develop new products and we need them to be supported by government and Universities.  We need them because we need new innovation, new technology and new infrastructure to meet our environmental challenges.

One of the major themes of the past two days has been leadership in innovation, an ambition to which the University of Bristol and the City of Bristol aspires – like any world-class university and city.  We have profound collective ambitions to be a Collaboratory for Change. These are exemplified by Bristol is Open, the Bristol Brain and the Bristol Billion, all endeavours of cooperation between the University of Bristol and Bristol City Council and all celebrated by George Ferguson in his speech to the SIF attendees yesterday.

This need for at least some fundamentally new technology is why the Cabot Institute has launched VENTURE. It is why the University has invested so much in the award-winning incubator at the Engine Shed. It is why we have devoted so much resource to building world-leading expertise in materials and composites, especially in partnership with others in the region.

We do not need these innovations for deployment now – deployment of already existing technology will yield major reductions in our carbon emissions – but we need to start developing them now, so that we can achieve more difficult emissions reductions in 20 years.  Our future leaders must have an electrical grid that can support a renewable energy network. Our homes must have been prepared for the end of gas.

And we will need new technology to fully decarbonise.

We effectively have no way to make steel without burning coal to melt iron – we either need new tech in recycling steel, need to move to a post-steel world, need to completely redesign steel plants, or some combination of all three.

We will need new forms of low-energy shipping. Localising manufacturing and recycling could create energy savings in the global supply chain.  But we will always have a global supply chain and eventually it must be decarbonised.

Similarly, we will need to decarbonise our farm equipment.  At heart, I am still an Ohio farm boy, and so I was distracted from my cities-focus to discuss this with Carlo Lambro, Brand President of New Holland.  Their company has made some impressive efficiency gains in farm equipment, especially with respect to NOx emissions, but he conceded that a carbon neutral tractor is still far away – they require too much power, operating at near 100% capacity (cars are more like 20-30%).  He described their new methane-powered tractor, which could be joined up to biogas emissions from farm waste, but also explained that it can only operate for 1.5 hours.  There have been improvements… but there is still a long way to go. I appreciated his engagement and his candor about the challenges we face (but that did not keep me from encouraging him to go faster and further!).

Finally, if we really intend to limit warming to below 2C, then we will likely need to capture and store (CCS) some of the carbon dioxide we are adding to the atmosphere. Moreover, some of the national negotiators are pushing for a laudable 1.5C limit, and this would certainly require CCS. In fact, the need for the widespread implementation of such technology by the middle of this century is explicitly embedded in the emissions scenarios of IPCC Working Group 3. That is why some of our best Earth Scientists are working on the latest CCS technology.

Unfortunately, CCS illustrates how challenging innovation can be – or more precisely, as articulated by Californian entrepreneur Tom Steyer, how challenging it can be to develop existing technology into useful products. The CCS technology exists but it is still nascent and economically unviable.  It must be developed.  Given this, the recent cancellation of UK CCS projects is disappointing and could prove devastating for the UK’s intellectual leadership in this area.  The consequences of this decision were discussed by Nicola Sturgeon in a panel on energy futures and she renewed Scotland’s firm commitment to it.

This issue exemplifies a wider topic of conversation at the SIF: social and technological innovation and development requires financing, but securing that financing requires safety.  Skittish investors do not seek innovation; they seek safe, secure and boring investment. And SIF wrapped up by talking about how to make that happen.

First, we must invest in the research that yields innovations. We must then invest in the development of those innovations to build public and investor confidence.  Crucial to both of those is public sector support. This includes Universities, although Universities will have to operate in somewhat new ways if we wish to contribute more to the development process. We are learning, however, which is why George Ferguson singled out the Engine Shed as the world’s leading higher education based incubator.

Second, and more directly relevant to the COP21 ambitions, businesses and their investors need their governments to provide confidence that they are committed to a new energy future.  It has been clear all week that businesses will no longer accept the blame for their governments’ climate inaction.

Instead, most businesses see the opportunity and are eager to seize it. As for the few businesses that cling to the past? Like all things that fail to evolve, the past is where they shall remain.  The new generation of entrepreneurs will see to that. Whether it be the new businesses with new ideas or the old businesses that are adapting, the new economy is not coming; it is already here.

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This blog is by Prof Rich Pancost, Director of the Cabot Institute at the University of Bristol.  For more information about the University of Bristol at COP21, please visit bristol.ac.uk/green-capital
Prof Rich Pancost

 

This blog is part of a COP21 daily report series. View other blogs in the series below:

Why do flood defences fail?

Posted on by janet.crompton

More than 40,000 people were forced to leave their homes after Storm Desmond caused devastating floods and wreaked havoc in north-west England. Initial indications were that the storm may have caused the heaviest local daily rainfall on record in the UK. As much as £45m has been spent on flood defences in the region in the previous ten years and yet the rainfall still proved overwhelming. So what should we actually expect from flood defence measures in this kind of situation? And why do they sometimes fail?

We know that floods can and will happen. Yet we live and work and put our crucial societal infrastructure in places that could get flooded. Instead of keeping our entire society away from rivers and their floodplains, we accept flood risks because living in lowlands has benefits for society that outweigh the costs of flood damage. But knowing how much risk to take is a tricky business. And even when there is an overall benefit for society, the consequences for individuals can be devastating.

We also need to calculate risks when we build flood defences. We usually protect ourselves from some flood damage by building structures like flood walls and river or tidal barriers to keep rising waters away from populated areas, and storage reservoirs and canals to capture excess water and channel it away. But these structures are only designed to keep out waters from typical-sized floods. Bigger defences that could protect us from the largest possible floods, which may only happen once every 100 years, would be much more expensive to build and so we choose to accept this risk as less than the costs.

Balancing the costs and benefits

In the UK, the Environment Agency works with local communities to assess the trade off between the costs of flood protection measures, and the benefits of avoiding flood damage. We can estimate the lifetime benefits of different proposed flood protection structures in the face of typical-sized floods, as well as the results of doing nothing. On the other side of the ledger, we can also estimate the structures’ construction and maintenance costs.

In some cases, flood protection measures can be designed so that if they fail, they do the least damage possible, or at least avoid catastrophic damage. For example, a flood protection wall can be built so that if flood waters run over it they run into a park rather than residential streets or commercial premises. And secondary flood walls outside the main wall can redirect some of the overflow back towards the river channel.

 

Thames Barrier: big costs but bigger benefits.
Ross Angus/Flickr, CC BY-SA

The Environment Agency puts the highest priority on the projects with the largest benefits for the smallest costs. Deciding where that threshold should be set is a very important social decision, because it provides protection to some but not all parts of our communities. Communities and businesses need to be well-informed about the reasons for those thresholds, and their likely consequences.

We also protect ourselves from flood damage in other ways. Zoning rules prevent valuable assets such as houses and businesses being built where there is an exceptionally high flood risk. Through land management, we can choose to increase the amount of wooded land, which can reduce the impact of smaller floods. And flood forecasting alerts emergency services and helps communities rapidly move people and their portable valuables out of the way.

Always some risk

It’s important to realise that since flood protection measures never eliminate all the risks, there are always extra costs on some in society from exceptional events such as Storm Desmond, which produce very large floods that overwhelm protection measures. The costs of damage from these exceptional floods are difficult to estimate. Since these large floods have been rare in the past, our records of them are very limited, and we are not sure how often they will occur in the future or how much damage will they cause. We also know that the climate is changing, as are the risks of severe floods, and we are still quite uncertain about how this will affect extreme rainfall.

 

At the same time we know that it’s very hard to judge the risk from catastrophic events. For example, we are more likely to be afraid of catastrophic events such as nuclear radiation accidents or terrorist attacks, but do not worry so much about much larger total losses from smaller events that occur more often, such as floods.

Although the process of balancing costs against benefits seems clear and rational, choosing the best flood protection structure is not straightforward. Social attitudes to risk are complicated, and it’s difficult not to be emotionally involved if your home or livelihood are at risk.
The Conversation

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This blog is written by Cabot Institute member Dr Ross Woods, a Senior Lecturer in Water and Environmental Engineering, University of Bristol.  This article was originally published on The Conversation. Read the original article.

Ross Woods

The Green and Black conversation

Posted on by janet.crompton

This Green and Black Conversation involved several members of Bristol’s Black and Minority Ethnic (BME) community and organisations. It was held in partnership with Bristol Green Capital Partnership (Gary Topp), University of Bristol (Hayley Shaw, Cabot Institute & Kat Wall, Policy Institute) and sponsored by the Cabot Institute whose Director Professor Rich Pancost addressed the group. The campaign has political support from Mayor George Ferguson and also Marvin Rees who attended the forum with European Member of European Parliament Claire Moody.  Our new volunteer Helly Dudley, Broadcast Assistant on Ujima’s Old Skool Cruising Show (Monday 4-6) with Roger Griffith who was co-facilitator with Julz attended her first community engagement event and here is her blog.
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The Green and Black Conversation

Arriving at St Werburgh’s community centre I knew I was going to be getting involved in discussions about being ‘Green/Environmental’ and how this is linked to the BME community in Bristol. However, I wasn’t sure what would be discussed, how they would be viewed and spoken about.

From the get-go I realised that this is extremely important to many members of the BME community as there was enthusiasm for living in an environmentally beneficial lifestyle and also a feeling of a lack of support which members of the BME community feel they are receiving from the campaign. Although Bristol is European Green capital, there is a divide occurring within the city and certain communities feel they are being excluded by Bristol European Green Capital from this campaign.

We first looked at the use of language and the ways in which this can be limiting to people of all ages and ethnicities. Not only do language barriers prevent certain communities from getting involved but it also prevents them from knowing how to help and giving them a sense of self-responsibility. When one member of the group declared they didn’t know what ‘buying organic’ meant this created a murmur of agreement throughout the rest of the group as few of us were able to define what ‘organic’ meant. If you, like me, are unsure of the term ‘organic’ then the definition is – ‘(of food or farming methods) produced or involving production without the use of chemical fertilizers, pesticides, or other artificial chemicals.’

If the Green agenda wants to get all of Bristol’s residents on board to help the environment then they need to change the way in which they portray their methods of being sustainable and as we explored language is just one of those methods.

Another issue raised throughout the day was there was a belief that it was seen as an elitist campaign which directs its messages mainly to a white middle-class demographic. One attendee pointed out that, Gloucester Road is covered with Green campaign posters, Stapleton Road was left untouched. Why is it that the campaign is just aiming their agendas at the central zone of Bristol and neglecting the rest of its communities?

Kat Wall, who works with the University of Bristol and helped set up this discussion, mentioned that she had been to an environmental meeting and was shocked by the lack of BME members present. When she questioned the organiser of the event why this was the case they just replied that they had sent out the necessary invites but no one turned up. When this was put to the rest of the group there was an immediate response that the main reason they don’t attend these events is because they are tired of time and time again going to the same talks and making their input but never actually being heard or have their opinions taken on board.

There seems to be a lack of conversations between communities and those in power. To quote a member of Bristol’s Bus Boycott and activist and former farmer Roy Hackett ‘nobody ever asks me’ so if Bristol City Council and others don’t start listening to the ideas and needs of their own citizens  then how are we as tax-paying citizens  supposed to be able to get involved . One attendee mentioned that if her house was better insulated then she would be able to use less gas and her bills would decrease and she would be able to find the money to buy organic foods.

How can our city expect to stay regarded as a great city when we are cutting out members of our society from joining this campaign and others? We need to change our way of approaching the environmental issues and instead of forcing change onto communities we need to ask the residences of Bristol what they need for change.

We need to carry on having these discussions with each other, and those in power on what the people need in all communities not just the city centre. With the United Nations COP21 meeting taking place over the next 10 days in Paris, discussing climate change we need to now, more than ever, change our way of approaching this subject; and this can be done by including all members of our communities and tackling environmental issues together.

I really enjoyed attending this event and, by the enthusiasm and energy in the room, so did the other participants I believe that it was a conversation that was desperately needed so communities understand that this isn’t just an environmental issue but a social one that needs tackling. It is essential we work together and listen to one another to create new ideas of how to better enhance Bristol’s sustainability.
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This event took place at St Werburgh’s Community Centre in Bristol on 30 November 2015.

This blog was written by Helly Dudley, follow on Twitter @helena_dudley
Follow @ujimaradio.com @julzbrizzle and Roger Griffith @rogerg44.

The Green and Black initiative is a campaign ran by Ujima Radio to raise awareness within the Black & Minority Ethnic (BME) community about the environment and includes Bristol European Green Capital 2015 and beyond. The campaign has been led by Ujima presenter Julz Davis AKA Mistri and has included live broadcasts, debates, featured radio shows and ideas and brings people from marginalised communities into the discussions. This can include cooking tips, exercise and health, climate change across the African and Asian diaspora or heavy air-pollution from the M32 corridor that divides St Pauls and Easton.

Read more about how the Cabot Institute is working with the BME communities around the legacy of the European Green Capital year – see project Green and Black- An alternative green capital.

COP21 daily report: While the politicians negotiate, the science does not stop

Posted on by janet.crompton
Cabot Institute Director Professor Rich Pancost will be attending COP21 in Paris as part of the Bristol city-wide team, including the Mayor of Bristol, representatives from Bristol City Council and the Bristol Green Capital Partnership. He and other Cabot Institute members will be writing blogs during COP21, reflecting on what is happening in Paris, especially in the Paris and Bristol co-hosted Cities and Regions Pavilion, and also on the conclusion to Bristol’s year as the European Green Capital.  Follow #UoBGreen and #COP21 for live updates from the University of Bristol.  All blogs in the series are linked to at the bottom of this blog.

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I am on the train from Bristol Temple Meads to Paddington and then on to Paris. It seems appropriate leaving from a station that was built by Brunel, a symbol of the industrial revolution but also innovation. Tomorrow, I will be joining George Ferguson, Stephen Hilton of Bristol City Council, Amy Robinson of Low Carbon Southwest and others at the Sustainable Innovation Forum. I appreciate that addressing climate change means changing some aspects of how we live, but it also requires some fundamentally new technology; I am excited to see where the cutting edge thinking is.  Meanwhile, over a relatively calm weekend, the draft accord has been made public – there have been some significant advances but also a ways to go.  Negotiations will be continuing in earnest!  More on all of that tomorrow (I hope – it will be a long day).  



Today, however, my attention is elsewhere as our postgrads, research fellows and academic staff make their final preparations for the Annual Meeting of the American Geophysical Union (AGU).  The science goes on – as it must and will, regardless of the Paris negotiations. We still know far too little about the complexity of this magnificent planet, how to best live on it sustainably, and the imminent and the longer-term impacts of climate and wider environmental change.  
In my own research group (the OGU), my colleagues will be talking about increases in extreme rainfall during a past global warming event that is potentially analogous to the warming of today (see Matthew Carmichael’s research); the latest reconstructions of how carbon dioxide concentrations have changed over the past 3 million years (see Marcus Badger’s research); and the long-term controls on the hydrological cycle of the Mediterranean region (see Jan Peter Mayser’s research). All of them are collaborating with climate modellers in BRIDGE. Others in BRIDGE will be discussing how to improve the next generation of Earth System models, how to forecast land use impacts on the atmosphere, and examining the biological consequences of past ocean acidification events.  Anita Ganesan and Matt Rigby are both presenting talks on methane cycling and monitoring – a reminder that CO2 is not the only greenhouse gas and that cars and cities are not the only cause of global warming.  Our glaciologists are exploring the future of the ice sheets and glaciers. Our civil engineers and geographers are presenting the latest research on all aspects of the hydrological cycle: improved models of catchments; better flood and drought forecasting; and better understanding how land use change has affected the chemistry of our rivers.  


Through all of this, there is a persistent and recurring theme of constraining uncertainty as well as understanding uncertainty in the context of decision-making. Scientists, industry and leaders must develop better tools for navigating environmental uncertainty, a focus of the Cabot Institute in 2015 and for which the need has been aptly demonstrated by Storm Desmond’s impact on Cumbria.
It is a remarkable variety of research – and that is just a sample from the University of Bristol.  
I’m never apologetic about promoting Bristol achievements and activity – it is what I know best, it is world-leading and it is my job!  Here, however, singling out these Bristol-centric contributions makes a stronger point; the above are just a few examples of the research conducted in just one institution.  Some 20,000 scientists will attend AGU!  There is profound and diverse effort devoted to understanding our planet and improving how we live upon it.


A fantastic example of some research being led by our colleagues will be on display in London on Monday as part of a Royal Society Discussion Meeting on the Biological and Climatic Impacts of Ocean Trace Element Chemistry. The event is co-convened by our Oxford friend, colleague and frequent collaborator, Gideon Henderson. Chatting to Gideon a few days ago, he emphasised the importance of the ocean in regulating our climate: ‘The oceans consume 27% of the carbon we emit, after all, and the ocean biosphere naturally consumes 11 Gtonnes of C per year.’ This is a huge issue. Currently, the ocean buffers the atmosphere against human action – but it is unclear how long this will continue.  Moreover, the ocean does so at a cost:

 

  • As the ocean absorbs energy, it warms. 
  • As the ocean absorbs this carbon, its pH declines. 
  • As marine phytoplankton assimilate this carbon and sink, they change the chemical state of the ocean, from top to bottom, creating oxygen dead zones and transforming the redox state of trace but biologically vital elements.   

 

This research is an important reminder that the issues associated with rising greenhouse gas concentrations encompass more than just the weather – greenhouse gases are changing the chemistry, physics and biology of our planet, with unclear consequences.  Their full synergistic effects, through these complex biogeochemical systems, remain difficult to anticipate. Their consequences difficult to predict. 
 
And so, as the negotiations continue, we continue our research.  On the oceans and the tropical rain forests; the deserts of the Sahara and the Arctic; the peatlands and permafrost; the soils and the bedrock beneath; the atmosphere and the cryosphere.  On the plants, animals and microorganisms that coexist with and co-regulate these ecosystems.  And of course, the people dependent on them.
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This blog is by Prof Rich Pancost, Director of the Cabot Institute at the University of Bristol.  For more information about the University of Bristol at COP21, please visit bristol.ac.uk/green-capital
Prof Rich Pancost

 

This blog is part of a COP21 daily report series. View other blogs in the series below:
 
Monday 30 November: COP21 daily report
Tuesday 1 December: Setting a more ambitious agenda – Bristol’s Transformative Action Plans
Wednesday 2 December: Reflecting on the science of climate change
Thursday 3 December: The politics and culture of climate change
Friday 4 December: Be brave, work together and involve the next generation
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