Farmers must develop new approaches if they are to keep producing crops as water supplies dwindle.
Katherine Bourzac, Nature
On a still, warm evening in mid-June, leaves are reflected in the cool water that fills the irrigation channels of a pecan orchard in Clovis, California. This placid scene seems to have barely changed in the past 40 years.
Underground, however, the water table tells a different story. Satellite data show that in California’s Central Valley, the most productive...
Seth Borenstein, Yahoo! News
Top scientists from a variety of fields say they are about as certain that global warming is a real, man-made threat as they are that cigarettes kill.
They are as sure about climate change as they are about the age of the universe. They say they are more certain about climate change than they are that vitamins make you healthy or that dioxin in Superfund sites is dangerous.
They’ll even put a number on how certain they are about climate change. But...
Smithsonian Magazine
In the past two decades, we’ve seen dramatic images of ice shelves and the floating tongues of glaciers crumble into the ocean. The summer of 2012 saw a huge chunk of ice–two times the size of Manhattan–snap off of Greenland’s Petermann Glacier. Two years earlier, a piece of ice twice as big as that one split from the glacier’s front. In early 2002, ice covering an area the greater than the size of Rhode Island sloughed into the ocean from a lobe of the Antarctic Peninsula’s...
Led by Donald Blake, UCI scientists have been on a decades-long global quest to measure atmospheric pollution
Conditions couldn’t be worse. The air is dead, not a leaf stirring on the trees lining the dusty Mexican highway. Farmers are burning grapevines, garbage and weeds. Acrid smoke billows upward, then settles like a grimy blanket across miles of hills.
Exhausted after driving since 2 a.m. from suburban Irvine to this northern Baja stretch, UC Irvine atmospheric chemist Tai Chen ’87,...
UCIrvine News
A new study in Proceedings of the National Academy of Sciences that identifies critical marine life relies on work done by UC Irvine undergraduates, according to lead author Adam Martiny, a UC Irvine associate professor of Earth system science. The students’ analysis helped an international consortium of scientists determine that the world’s oceans contain an octillion (that’s 27 zeroes) cyanobacteria. This blue-green algae is a primary food source for other life, and its current...
Janet Wilson, UC Irvine News
Irvine, Calif. – Models of carbon dioxide in the world’s oceans need to be revised, according to new work by UC Irvine and other scientists published online Sunday in Nature Geoscience. Trillions of plankton near the surface of warm waters are far more carbon-rich than has long been thought, they found. Global marine temperature fluctuations could mean that tiny Prochlorococcus and other microbes digest double the carbon previously calculated. Carbon dioxide...
Irrigation has downstream effects on climate and runoff to Colorado River
Erin Wayman, Science News
Farmers in California help make it rain in the American Southwest, a new computer simulation suggests. Water that evaporates from irrigated fields in California’s Central Valley travels to the Four Corners region, where it boosts summer rain and increases runoff to the Colorado River, researchers report online January 12 in Geophysical Research Letters.
This climate link may be crucial...
Janet Wilson, UC Irvine News
Halting climate change will require “a fundamental and disruptive overhaul of the global energy system” to eradicate harmful carbon dioxide emissions, not just stabilize them, according to new findings by UC Irvine and other scientists.
In a Jan. 9 paper in Environmental Research Letters, UC Irvine Earth system scientist Steve Davis and others take a fresh look at the popular “wedge” approach to tackling climate change outlined in a 2004 study by Princeton...
Does that mean Earth isn’t warming up?
Daniel Stone, National Geographic News
Despite frequent headlines about a warming planet, melting sea ice, and rising oceans, climate analysts pointed to a seeming bright spot this week: During Southern Hemisphere winters, sea ice in the Antarctic, the floating chunks of frozen ocean water, is actually increasing.
In fact, in late September, satellite data indicated that Antarctica was surrounded by the greatest area of sea ice ever recorded...
Janet Wilson, UCIrvine News
UC Irvine’s redwoods sit like forlorn Christmas trees near the campus power plant and the Crawford Hall parking lot. They’re miniatures of Northern California’s ancient giants, a dwarf grove with drooping branches. But they’re still standing.
The trees began life with fanfare three decades ago. They are test-tube babies – samples of the world’s first artificially cloned Sequoia sempervirens created by now-deceased UCI biologist Ernest Ball. Manufactured from...