In front of the United States Geological Survey (USGS) national headquarters building in Reston, Va., two genetically identical lilac bushes are rooted in the earth. To casual observers, they are fragrant adornments to the landscaped property. But to ecologist Jake Weltzin and geographer John Jones—USGS scientists who study plant and animal life-cycle events—they are “Li” and “Lac,” two small but important pieces of a developing climate change indicator system.
PostedApr 18, 2012
Physical Climate, Observations, Water Resources, Human Health, Extreme Events
Last week the National Oceanic and Atmospheric Administration (NOAA) released temperature data showing that, in the contiguous United States, March 2012 was warmer than any other March on record.