Posted on September 1, 2015 by Bob Berwyn
High temperatures and a lack of rain spread serious drought conditions across Europe this summer.
Study tracks increase in extreme conditions
FRISCO — Scientists taking a close look at the last 50 years — the modern global warming era — found that droughts and heat waves are happening simultaneously much more frequently than in the past.
The climate experts at the University of California, Irvine analyzed data gathered from ground sensors and gauges since 1960 and crunched the numbers with a statistical model to track the upswing.
“Heat waves can kill people and crops while worsening air quality, and droughts exacerbate those serious impacts,” said senior author Amir AghaKouchak, assistant professor of civil & environmental engineering. “With these two extremes happening at the same time, the threat is far more significant.” Continue reading
Filed under: climate and weather, Drought, extreme weather, global warming | Tagged: air quality, climate change, drought, extreme weather, health, heatwaves | 1 Comment »
Posted on June 13, 2015 by Bob Berwyn
Study suggests that greenhouse gas pollution will have a fundamental impact on plant-nutrient cycles and food production
FRISCO — Increased concentrations of atmospheric carbon dioxide is hindering some plants from absorbing nitrogen, the nutrient governing crop growth in most terrestrial ecosystems.
Concentrations of nitrogen in plant tissue is lower in air with high levels of carbon dioxide, regardless of whether or not the plants’ growth is stimulated, University of Gothenburg (Sweden) researchers found in a new study, published in the journal Global Change Biology.
The study examined various types of ecosystems, including crops, grasslands and forests, and involves large-scale field experiments conducted in eight countries on four continents. Continue reading
Filed under: agriculture, climate and weather, Food, global warming | Tagged: climate change, climate change impacts, food, greenhouse gas pollution, health | 2 Comments »