Highlights
NOAA/NCDC’s Climate Extremes Index (CEI) for summer 2010 was about one-and-a-half times its historical average. The CEI measures the occurrence of several types of climate extremes (like record or near-record warmth, dry spells or rainy periods). Factors contributing to this summer’s value: a very large area with extremely warm nighttime low temperatures (six times larger than average and the largest since 1910) and an above-average number of days with average to heavy precipitation.
The source article NOAA - National Oceanic and Atmospheric Administration - NOAA: Fourth Warmest U.S. Summer on Record .
