The week that was, 9/19-25/2010
Dust-covered snow in the San Juan Mountains of the Upper Colorado River basin, May 2009. Source: NASA/JPL-Snow Optics Laboratory. Click on the image to be taken to the report summary.
In the semi-arid regions of the Colorado Plateau and Great Basin, winds blow desert dust east, triggering dust-on-snow events. When dark dust particles fall on snow, they reduce its ability to reflect sunlight. The snow also absorbs more of the sun’s energy. This darker snow cover melts earlier, with some water evaporating into the atmosphere. — NASA study shows desert dust cuts Colorado River flow, NASA press release, September 20, 2010
… the “first-in first-served” system of allocating water rights has not worked in areas of high demand and must be overhauled. — Reference to a New Zealand study by the Land and Water Forum of proposed water management overhauls, Tougher controls on water likely, Dominion Post, September …
North American Native Plant Societies
After the lawn
Garden blogs
