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Ireland’s Leading Expert on Climate Change Gives Lecture at NUI Galway
Thursday, 3 April 2014
Pictured last Friday March 28th at the talk entitled “Ireland and Climate Change: Adapting in an Environment of Uncertainty” delivered by Professor John Sweeney, hosted by the School of Natural Sciences at NUI Galway are from (L-R): Dr Mike Gormally, AEU, Centre for Environmental Science, Professor John Sweeney, ICARUS, NUI Maynooth, Dr Micheline Sheehy Skeffington, Plant Ecology Research Unit and Professor Vincent O’Flaherty, Head of the School of Natural Sciences, NUI Galway.
Ireland has one of the largest per capita greenhouse gas emission rates says Professor John Sweeney, Ireland’s Leading Expert on Climate Change
Ireland’s leading expert on climate change, Professor John Sweeney, delivered a lunchtime talk hosted by the School of Natural Sciences at NUI Galway entitled, Ireland and Climate Change: Adapting in an Environment of Uncertainty. The event drew a large public attendance followed by a lively discussion at the end.
Professor Sweeney talked about extreme events, how recent storms and high rainfall are weather patterns, driven by jet stream irregularities and an unusually close-to-earth moon. But he also reminded us that sea-level is incontrovertibly rising, at an accelerated rate in recent decades, largely due to accelerated ice cap melting. Thus any coastal storms will have an increasingly powerful effect due to higher sea-level.
Professor Sweeney quoted the 2013 International Panel on Climate Change (IPCC) Fifth Assessment Report: the observed accelerated increase in global temperatures is “at least 95%” likely to be mainly due to human activity, especially burning fossil fuels.
Greenhouse gas emissions are far greater in the northern hemisphere: Ireland has one of the largest per capita emission rates and very few countries, not even Ireland, have so far taken serious measures to reduce these emissions. Increased temperatures and rainfall may become more seasonal, so Ireland is projected to have hotter, drier summers and wetter winters with an increased storm incidence.
Professor Sweeney emphasised that the Irish government and local authorities need to focus on damage limitation, in terms of future flood prevention and location of housing development or septic tanks in relation to rising water tables and flood risk, but also –critically – summer water budget management.
All products bought require large water budgets to grow or manufacture, some much more than others. Water use efficiency requires more attention. An increase in rainfall seasonality is also likely to affect our high-conservation habitats, especially wetlands such as bogs. Provision is required to maintain their hydration in the face of increased summer drying conditions.
NUI Maynooth’s collaboration with NUI Galway’s School of Natural Sciences, Plant Ecology Research Unit (PERU) and Applied Ecology Unit (AEU) has demonstrated that many vulnerable Arctic-Alpine species are projected to contract in range with a rise in temperature, but other, currently more southerly-distributed native species, may expand throughout the island. This has particular implications also for invasive species and even indigenous pests.
During the public lecture, Professor Sweeney also highlighted some positive spin-offs of projected warmer summers; grain crops –and even grass– may increase yield, though potatoes require adequate summer rain for best performance. As more southern regions heat up, we may also benefit from increased tourism. But without informed leadership to recognise the reality of observed and projected climate changes, measures will not be taken in advance of future events in order to reduce damage repair costs and even mortalities.
Professor Sweeney ended by warning against believing sensationalist media; scientists are poor communicators, needing reference to complex data, in the face of sound-bites aimed to sell news. As members of the public, we need to develop discernment in what we read and hear about climate change, and to take individual action to reduce our carbon – and water – footprints, as well as educating our peers and superiors.
The event was organised by Dr Micheline Sheehy Skeffington, Plant Ecology Research Unit (PERU) and Dr Mike Gormally of the Applied Ecology Unit (AEU), School of Natural Sciences at NUI Galway.
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