More than 100 center-pivot sprinklers controlled by a central computer irrigate wheat, alfalfa, potatoes, and melons along the Columbia River near Hermiston, Oregon. Doug Wilson/ARS
Farmers who plant more crops, increase irrigation coverage and till the land less can have a profound effect on climate.
Climate scientists from Lawrence Livermore National Laboratory found that models that included recent changes in agricultural practices, such as more irrigation, higher yielding crops, and less tillage, predicted lower temperatures than models that ignored these factors.
“Nearly all models used to predict climate changes either ignore agriculture altogether or assume that farmers behave the same way through time,” said David Lobell, the lead author on a paper appearing in the March 23 issue of the journal Geophysical Research Letters. “In reality, farmers are changing rapidly in response to new technologies, growth in demand and other factors. This study suggests that these changes may have important cooling effects, especially at local scales.”
Anne Stark | EurekAlert!
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Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
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19.01.2017 | Physics and Astronomy