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Climate change, causes and impacts

Last modified December 01, 2011 10:21

Climate change, causes and impacts

Groundwater study reveals climate-model variability — Last modified June 07, 2013 08:55
A comprehensive study of renewable groundwater resources has highlighted the variability between different climate models. The research, which used five climate models to project future levels of groundwater recharge under four greenhouse-gas scenarios, found large discrepancies between the models.
Rising temperature difference between hemispheres could dramatically shift rainfall patterns in tropics — Last modified April 08, 2013 09:02
One often ignored consequence of global climate change is that the Northern Hemisphere is becoming warmer than the Southern Hemisphere, which could significantly alter tropical precipitation patterns, according to a new study by climatologists from the University of California, Berkeley, and the University of Washington, Seattle.
Climate forcing growth rates: doubling down on our Faustian bargain — Last modified March 28, 2013 16:48
Climate forcing growth rates: doubling down on our Faustian bargain.
Many of Europe's rainfall trends will not be clear until late this century — Last modified March 26, 2013 11:17
The effects of greenhouse gases on precipitation are much harder to predict than those on temperature. But information about future rainfall is vital for planners. Now a German researcher has calculated when we will be able to distinguish the effect of climate change on European rainfall from the effects of natural variability.
Carbon Dioxide Could Reduce Crop Yields — Last modified March 26, 2013 11:16
High-yielding dwarf plant varieties lose their advantage due to increasing carbon dioxide concentration in the atmosphere.
Nature climate change: action by 2020 key for limiting climate change — Last modified December 20, 2012 16:08
Limiting climate change to target levels will become much more difficult to achieve, and more expensive, if action is not taken soon, according to a new analysis from IIASA, ETH Zurich, and NCAR.
Why was summer 2009 so cool in parts of Asia and North America? — Last modified December 20, 2012 15:16
While summer 2009 saw heatwaves across Europe and drought in India, parts of northern Central Asia, East Asia and central North America experienced unseasonably low temperatures and above normal rainfall.
Doha climate change deal clears way for 'damage aid' to poor nations — Last modified December 18, 2012 12:52
From the Guardian. Poor countries have won historic recognition of the plight they face from the ravages of climate change, wringing a pledge from rich nations that they will receive funds to repair the "loss and damage" incurred.
Dismay at agriculture impasse in UN climate talks — Last modified December 18, 2012 12:49
Farmers, researchers and policy makers expressed their disappointment on Monday that progress towards including agriculture in the U.N. climate talks has stalled, with little hope of getting it back onto the agenda at the negotiations in Qatar.
Global warming threatens agricultural productivity in Africa and South Asia — Last modified November 09, 2012 10:00
The Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC; Christensen et al. 2007) has, with greater confidence than previous reports, warned the international community that the increase in anthropogenic greenhouse-gas emissions will result in global climate change.
Rise in temperatures and CO2 follow each other closely in climate change — Last modified July 26, 2012 14:14
The greatest climate change the world has seen in the last 100,000 years was the transition from the ice age to the warm interglacial period. New research from the Niels Bohr Institute at the University of Copenhagen indicates that, contrary to previous opinion, the rise in temperature and the rise in the atmospheric CO2 follow each other closely in terms of time. The results have been published in the scientific journal, Climate of the Past.
New report assesses impact of climate change on forest diseases — Last modified April 19, 2012 15:58
Climate change is projected to have far-reaching environmental impacts both domestically and abroad. A recently published report by the USDA Forest Service's Pacific Southwest Research Station (PSW) examines the impact of climate change on forest diseases and how these pathogens will ultimately affect forest ecosystems in the Western United States and Canada.
Nasa scientist: climate change is a moral issue on a par with slavery — Last modified April 13, 2012 10:11
From the Guardian. Averting the worst consequences of human-induced climate change is a "great moral issue" on a par with slavery, according to the leading Nasa climate scientist Prof. Jim Hansen.
'Quality control' of climate models can help predict future rainfall — Last modified February 17, 2012 15:08
Will cotton farmers in India still be able to rely on the south-west monsoon by 2020? Will the Corn Belt in the Midwestern United States become wetter or drier? Are European rivers more likely to burst their banks and cause significant floods? These are important questions that need answering to prepare for climate change. So can climate models provide the answers?
The good news about carbon storage in tropical vegetation — Last modified February 12, 2012 12:06
A study published in Nature Climate Change today finds that tropical vegetation contains 21 percent more carbon than previous studies had suggested. Using a combination of remote sensing and field data, scientists from Woods Hole Research Center (WHRC), Boston University, and the University of Maryland were able to produce the first "wall-to-wall" map (with a spatial resolution of 500 m × 500 m) of carbon storage of forests, shrublands, and savannas in the tropics of Africa, Asia, and South America.
Earth's energy budget remained out of balance despite unusually low solar activity — Last modified February 09, 2012 16:50
A new NASA study underscores the fact that greenhouse gases generated by human activity – not changes in solar activity – are the primary force driving global warming.
Scientists see shortcuts to slow global warming — Last modified January 27, 2012 10:32
A study by a large international team of scientists says that relatively cheap, simple measures to cut two common pollutants could substantially reduce global warming and improve human health and agriculture in coming decades.
Climate change is altering mountain vegetation at large scale — Last modified January 23, 2012 09:47
Climate change is having a more profound effect on alpine vegetation than at first anticipated, according to a study carried out by an international group of researchers and published in Nature Climate Change. The first ever pan-European study of changing mountain vegetation has found that some alpine meadows could disappear within the next few decades.
Global warming set to bring colder, snowier winters — Last modified January 20, 2012 10:49
The world is getting warmer, which should mean warmer winters - right? Wrong - a new study shows that global warming produces colder winters and heavier dumps of snow for large swathes of the northern hemisphere.
Checking global warming’s fingerprint — Last modified January 07, 2012 15:16
Back in 2007, the IPCC’s fourth assessment report found that "most of the observed increase in global average temperatures since the mid-20th century is very likely (>90% probability) due to the observed increase in anthropogenic greenhouse-gas concentrations”. Now, researchers from the UK, Canada and the US have explained the methods behind the statement in a manner that they hope is suitable for nonspecialists.
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