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Climate change, causes and impacts

Last modified December 01, 2011 10:21

Climate change, causes and impacts

Assessing the impact of climate change on a global scale — Last modified January 10, 2014 16:15
Thirty research teams in 12 different countries have systematically compared state-of-the-art computer simulations of climate change impact to assess how climate change might influence global drought, water scarcity and river flooding in the future.
EASAC warns Europe to prepare for future extreme weather events — Last modified December 23, 2013 08:58
Europe needs to plan for future probabilities of extreme weather. Heat waves, floods and storms do not respect national frontiers, so there is a need for action at both national and EU levels.
Borders of Earth's 'safe operating space' rock and roll — Last modified December 23, 2013 08:39
According to James Hansen, an atmospheric physicist at Columbia University, US, we passed the 'tipping point' for atmospheric carbon dioxide some years ago, when concentrations reached 350 ppm, and Earth's climate has now tipped into a new irreversible state, from which there is no route of return. But does our planet really have such clearly defined boundaries?
More ecosystems at risk as temperature rises — Last modified December 16, 2013 10:42
The more global mean temperature rises under climate change, the more land will be at risk of ecosystem shift. That’s the conclusion of a team who analysed the output of global vegetation models in the Inter-Sectoral Impact Model Intercomparison Project (ISI-MIP).
Special issue of ESA Frontiers assesses the impacts of climate change on people and ecosystems, and strategies for adaptation — Last modified November 18, 2013 14:46
President Obama marked the anniversary of Superstorm Sandy with an executive order last Friday “preparing the United States for the impacts of climate change.”
Study in Nature reveals urgent new time frame for climate change — Last modified October 21, 2013 07:54
The seesaw variability of global temperatures often engenders debate over how seriously we should take climate change. But within 35 years, even the lowest monthly dips in temperatures will be hotter than we’ve experienced in the past 150 years, according to a new and massive analysis of all climate models.
‘Stadium waves’ could explain lull in global warming — Last modified October 21, 2013 07:53
One of the most controversial issues emerging from the recent Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report (AR5) is the failure of global climate models to predict a hiatus in warming of global surface temperatures since 1998.
Advancing agricultural greenhouse gas quantification — Last modified October 03, 2013 10:06
Top of FormEnvironmental Research Letters Volume 8 Number 1. Lydia Olander et al 2013 Environ. Res. Lett. 8 011002 doi:10.1088/1748-9326/8/1/011002.
Undersea mountains provide crucial piece in climate prediction puzzle — Last modified September 27, 2013 14:12
A mystery in the ocean near Antarctica has been solved by researchers who have long puzzled over how deep and mid-depth ocean waters are mixed.
Rice and climate change: adaption or mitigation? Facts for policy designs — Last modified September 18, 2013 09:13
RICE AND CLIMATE CHANGE: ADAPTATION OR MITIGATION? FACTS FOR POLICY DESIGNS. A Choice from What Recent Summaries Say and Some Critical Additions for Use with Indonesian Farmers. Kees Stigter and Yunita Winarto
Solving the mysteries of hiatus in global warming — Last modified September 09, 2013 09:58
New research by Scripps Institution of Oceanography, UC San Diego climate scientists attributes the attenuation of a worldwide temperature increase to a cooling of eastern Pacific Ocean waters, one that counteracts the warming effect of greenhouse gases.
The potential for successful climate predictions — Last modified September 02, 2013 15:09
Will there be rather warm or cold winters in Germany in the coming years? We may have a long way to go before reliable forecasts of this kind can be achieved. However, marine scientists, under the auspices of the GEOMAR Helmholtz Centre for Ocean Research Kiel, recently managed to successfully hindcast climate shifts in the Pacific.
Insight: crops will face more extreme heat during flowering season — Last modified September 02, 2013 15:06
Extreme heat during the flowering period of crops can interfere with pollination and grain formation, and severely reduce yields. Along with increases in global mean temperature, extreme heat events – where temperatures cross crop-specific critical thresholds – are becoming increasingly common. In this study, we found that wheat around the world has been exposed to extreme heat in the last 30 years and project that wheat, maize and rice will be exposed to three times as much heat by the 2050s.
Cost of Arctic methane release could be 'size of global economy' warn experts — Last modified September 02, 2013 14:44
Economic modelling shows that the possible methane emissions caused by shrinking sea ice from just one area of the Arctic could come with a global price tag of 60 trillion dollars – the size of the world economy in 2012.
New study addresses trade-offs between food security and climate change mitigation — Last modified July 29, 2013 10:09
Improving agricultural productivity could help cut greenhouse gas emissions from agriculture, shows new IIASA research. But sustainable farming methods are key.
Insight: young scientist predicts that he will retire before global climate models become good enough for use in agriculture — Last modified July 22, 2013 16:36
I am a young researcher with plenty of years ahead to solve some of the problems that society will face as a result of climate change. But it is disconcerting to discover that I will be retired by the time global climate models are of sufficient quality to plug directly into agricultural models. At least that is the finding of a recent article I lead authored recently in Environmental Research Letters (ERL).
Tree rings and pollen enable 1500-year temperature reconstruction — Last modified July 22, 2013 16:16
Using tree-ring measurements and pollen data, researchers in the US and Canada have for the first time reconstructed an annual average temperature profile for North America going back 1500 years.
Brazil exports more carbon emissions — Last modified July 22, 2013 10:03
The international community is driving the deforestation of Brazilian forest at an increasing rate, a Norwegian study has found. The study reveals that the last decade saw 30% of the carbon emissions associated with Brazilian deforestation exported to consumers outside the country, up from 20% in the 1990s.
Insight: a simple explanation for the complex climate variations in the Sahel — Last modified June 27, 2013 14:58
A recent article in Environmental Research Letters (ERL) provides a simple interpretation of how the oceans influence the climate in the Sahel. The analysis makes sense of past droughts and the current trends towards increased rainfall, consistent with near- and long-term model projections.
New report identifies 'regret-free' approaches for adapting agriculture to climate change — Last modified June 20, 2013 08:54
Whether it's swapping coffee for cocoa in Central America or bracing for drought in Sri Lanka with a return to ancient water storage systems, findings from a new report from the CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) chart a path for farmers to adapt to climate shifts despite uncertainties about what growing conditions will look like decades from now.
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