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Climate change, causes and impacts

Last modified December 01, 2011 10:21

Climate change, causes and impacts

Arid areas absorb unexpected amounts of carbon — Last modified April 14, 2014 08:55
esearchers led by a Washington State University biologist have found that arid areas, among the biggest ecosystems on the planet, take up an unexpectedly large amount of carbon as levels of carbon dioxide increase in the atmosphere. The findings give scientists a better handle on the earth's carbon budget – how much carbon remains in the atmosphere as CO2, contributing to global warming, and how much gets stored in the land or ocean in other carbon-containing forms.
Heat stress while crops flower could harm yields — Last modified March 31, 2014 15:42
As climate changes, crops that experience high temperatures during their flowering period could set less seed. Indeed, extreme heat stress alone could reduce projected yields of maize by 45% over the next 100 years, according to a team from the UK and Canada.
OU study suggests non-uniform climate warming affects terrestrial carbon cycle, ecosystems and future predictions — Last modified March 13, 2014 09:29
A recent University of Oklahoma study of five decades of satellite data, model simulations and in situ observations suggests the impact of seasonal diurnal or daily warming varies between global regions affecting many ecosystem functions and services, such as food production, carbon sequestration and climate regulation. The effects of non-uniform climate warming on terrestrial ecosystems is a key challenge in carbon cycle research and for those making future predictions.
Volcanoes contribute to recent warming 'hiatus' — Last modified March 07, 2014 12:51
Volcanic eruptions in the early part of the 21st century have cooled the planet, according to a study led by Lawrence Livermore National Laboratory. This cooling partly offset the warming produced by greenhouse gases.
Global warming 'pause' due to unusual trade winds in Pacific ocean, study finds — Last modified February 20, 2014 08:57
The contentious "pause" in global warming over the past decade is largely due to unusually strong trade winds in the Pacific ocean that have buried surface heat deep underwater, new research has found.
Dry times in the Amazon add carbon dioxide to the atmosphere — Last modified February 18, 2014 13:45
As the climate changes, the Amazon Basin may release more carbon dioxide into the atmosphere than it absorbs, according to a new study published in the journal Nature.
Complexity and determining dangerous levels of climate impacts — Last modified January 24, 2014 11:23
A recent paper (Garten et al 2013 Environ. Res. Lett. 8 034032) finds very different global warming thresholds of concern between water scarcity and ecosystem changes.
Drought and climate change: an uncertain future? — Last modified January 10, 2014 16:17
Drought frequency may increase by more than 20% in some regions of the globe by the end of the 21st century, but it is difficult to be more precise as we don’t know yet how changes in climate will impact on the world’s rivers.
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.
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