Climate Extremes Cause up to Half Global Crop Variability


Alex Wierbinski's picture

By Alex Wierbinski - Posted on 06 May 2019

 

ECO-CRASHING NEWS, CLIMATE DRIVEN CROP VARIABILITY

Map of Global Regions
Continental regions for staple crops, Supplied by author, University of New South Wales..
Continental regions for staple crops, Supplied by author, University of New South Wales.

 

Turning Up the Heat

Climate extremes explain 18%-43% of global crop yield variations,
University of New South Wales, May 3, 2019.

MAIN POINTS

Extreme Weather & Crop Yields
"Researchers from Australia, Germany and the US have quantified the effect of climate extremes, such as droughts or heatwaves, on the yield variability of staple crops around the world."

Regional Crop Production and Sensitivity to Climate Fluctuations
Regional Crop Production and Sensitivity to Climate Fluctuations, University of New South Wales.

Indicators ranking global and regional production by relevance for total crop production and sensitivity to climate fluctuations. Larger table.

Standard Variability
"Overall, year-to-year changes in climate factors during the growing season of maize, rice, soy and spring wheat accounted for 20%-49% of yield fluctuations, according to research..."

Climate Variability
"Climate extremes, such as hot and cold temperature extremes, drought and heavy precipitation, by themselves accounted for 18%-43% of these interannual variations in crop yield."

Main Cause
"...we found that the most important climate factors for yield anomalies were related to temperature, not precipitation..."

Global Production Centers Vunerable
"The research also revealed global hotspots - areas that produce a large proportion of the world's crop production, yet are most susceptible to climate variability and extremes."

That's North America & Europe
"We found that most of these hotspots - regions that are critical for overall production and at the same time strongly influenced by climate variability and climate extremes - appear to be in industrialised crop production regions, such as North America and Europe."

Local Cultures Vulnerable
"Outside of these major regions, in regions where communities are highly dependent on agriculture for their livelihoods, the failure of these staple crops can be devastating."

 

Extreme Weather

Extreme Weather Increasing

Warming Seas to Radically Increase Frequency of Extreme Storms by 2100

Climate Research, 2018: Extreme Heat Expanding with the End of Cold

CLIMATE CRASHING: EXTREME WEATHER, The Fun's Just Getting Started

 

Warming & Declining Crop Yeilds

 

Eco-Crash News: Warming to Disrupt Global Corn Production

2018: Free Press Failure puts 5 Major Crops In Crosshairs Of Climate

 

 

  

More Coordinated Global-Scale Heatwaves in Our Future 

2018 Fourth National Climate Assessment

Warm Soil, Heatwaves & Microbes: Two Pieces of Climate Change-Soil Disaster Research

  

Lots
More Warming Coming,
Rapidly...

 Climate Models Underestimating Scale of Change: Twice What Climate Models Predict?

 

Recent
Climate Model Research

Worse models the Best?

Two Degrees Already Baked In

Improved Models Show Grim Future

Four Degrees by 2084

 

 

 

Eco Crashing News

May 2019 News of Man & Nature

 

 

 

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extreme weather, crop varibility, climate change, heatwaves, crop, climate model, information, links

 

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