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Climate change - food security
Recent Research
Global warming to hit African maize badly 2011
Historical Warnings of Future Food Insecurity with Unprecedented Seasonal Heat
Highest temperature extremes with be the norm in some temperate regions
Highest temperature extremes with be the norm in some temperate regions
and be exceeded in tropical and subtropical regions. Battisti, Naylor Science 2009.
Reds and oranges highlight lands around the Mediterranean that experienced significantly drier winters during 1971-2010 than 1902-2010.
Drought May Cause Shutdown of Texas Rice Production American Meteorological Society New Orleans January 31st, 2012
United States maize yields are projected to decrease (by 2050) and become more variable
Projected temperature changes indicate significant increase in interannual variability of U.S. maize yields - Urban et al. (2012)
Projected temperature changes indicate significant increase in interannual variability of U.S. maize yields - Urban et al. (2012)
Intensification of extreme precipitation and extreme drying caused by global warming intensifying the hydrological cycle is now discernible and double the projections of models.
Ocean Salinities Reveal Strong Global Water Cycle Intensification During 1950 to 2000 P. Durack, S. Wijffels, R. Matear Science 27 April 2012
Ocean Salinities Reveal Strong Global Water Cycle Intensification During 1950 to 2000 P. Durack, S. Wijffels, R. Matear Science 27 April 2012
Climate Change Helps, Then Quickly Stunts Plant Growth, Decade-Long Study Shows
Zhuoting Wu, Paul Dijkstra, George W. Koch, Bruce A. Hungate. Biogeochemical and ecological feedbacks in grassland responses to warming. Nature Climate Change, 2012
Zhuoting Wu, Paul Dijkstra, George W. Koch, Bruce A. Hungate. Biogeochemical and ecological feedbacks in grassland responses to warming. Nature Climate Change, 2012
Floods and Droughts in a Changing Climate – Now and the Future 29 April 2011
Paul A. Dirmeyer April 29th, 2011 Center for Ocean-Land-Atmosphere Studies Calverton, Maryland
Paul A. Dirmeyer April 29th, 2011 Center for Ocean-Land-Atmosphere Studies Calverton, Maryland
Global warming threatens China ... by cutting crops, shrinking rivers, more droughts and floods,
Govt of China Second National Assessment Report on Climate Change Jan 2012
Govt of China Second National Assessment Report on Climate Change Jan 2012
Knowledge Summary Women's and Children's Health
The WHO Partnership for Maternal, Newborn & Child Health June 2012
Today almost half a billion women and children under 5 in the developing world are undernourished.
This number could increase by 20 percent, reaching one in five within a decade, compared to one in seven today, due to the impacts of climate change on global food production, according to a detailed analysis by The Partnership for Maternal, Newborn & Child Health (PMNCH), the World Health Organization (WHO), the UN System Standing Committee on Nutrition (UNSCN),
The WHO Partnership for Maternal, Newborn & Child Health June 2012
Today almost half a billion women and children under 5 in the developing world are undernourished.
This number could increase by 20 percent, reaching one in five within a decade, compared to one in seven today, due to the impacts of climate change on global food production, according to a detailed analysis by The Partnership for Maternal, Newborn & Child Health (PMNCH), the World Health Organization (WHO), the UN System Standing Committee on Nutrition (UNSCN),
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Rice production in a changing climate: a meta-analysis of responses to elevated carbon dioxide and elevated ozone concentration.
E Ainsworth 11 MAR 2008.
When compared with rice grown in charcoal-filtered air, rice exposed to 62 ppb O3 showed a 14% decrease in yield. Many determinants of yield, including photosynthesis, biomass, leaf area index, grain number and grain mass, were reduced by elevated O3 (ground level ozone). While there have been too few studies of the interaction of CO2 and O3 for meta-analysis, the interaction of temperature and CO2 has been studied more widely. Elevated temperature treatments negated any enhancement in rice yield at elevated CO2.
When compared with rice grown in charcoal-filtered air, rice exposed to 62 ppb O3 showed a 14% decrease in yield. Many determinants of yield, including photosynthesis, biomass, leaf area index, grain number and grain mass, were reduced by elevated O3 (ground level ozone). While there have been too few studies of the interaction of CO2 and O3 for meta-analysis, the interaction of temperature and CO2 has been studied more widely. Elevated temperature treatments negated any enhancement in rice yield at elevated CO2.
UN warns of looming worldwide food crisis in 2013
Global grain reserves hit critically low levels. Extreme weather means climate 'is no longer reliable'
Global grain reserves hit critically low levels. Extreme weather means climate 'is no longer reliable'
2012 NASA Goddard Frequency of NH hot summers increasing
Nov 2012 PDSI over estimates drought area increase Sheffield Nature
Nov 2011 Achieving food security in the face of climate change. Summary for policy makers from the Commission on Sustainable Agriculture and Climate Change
Dec 2012 Ed Hawkins Increasing influence of heat stress on French maize yields 1960s - 2030s
Jan 2013 Potsdam Institute Global warming has increased monthly heat records by a factor of five
Loss of Summer Rains Stoked Long Droughts in the US Southwest 11 March 2013
AGU Release
Warming
in Central China Greater Than Most Climate Models Indicated PNAS May 15,
2013
Warmer
Climate Threatens Africa’s Vital Cassava Crop Climate Central 11 May 2013
Increasing
drought under global warming in observations and models
Aiguo Dai Nature Climate Change Aug 2012
Aiguo Dai Nature Climate Change Aug 2012
Warming ocean
reshaping global fisheries May 2013 Nature
No-win situation for agriculture in the
Amazon 34% drop in soybean by 2050 Environmental Research Letters 10 May 2013