Evaporation Atlas for the Contiguous U.S. (1956-1970)Entry ID: 000501
Abstract: Maps are presented showing the areal distribution of evaporation in
the contiguous 48 states (1) observed from Class A pans from May
through October, (2) estimated for a free water surface (FWS) with
negligible heat storage from May through October, and (3) estimated
for an FWS for the entire year. A map is presented of coefficients to
convert from pan evaporation to FWS evaporation. Sources of ... data,
analyses of the maps, and limitations on their use are described. The
maps are printed on a scale of 1/4,800,000. The data set used
included, at most, 15 years. The data sets were adjusted to fit a
common base period 1956-1970. These values are considered a good
index to potential evapotranspiration or potential consumptive use.
Processing: Estimation equations were used when weather conditions
prevented reliable measurements.
These data are available in paper copy or microfiche at cost of
(Click for Interactive Map)
Start Date: 1956-01-01Stop Date: 1970-12-30
ISO Topic Category
Quality Quality control: Only data from standard installations were used.
Farnsworth, Richard K.; and Thompson, Edwin S (1982), Evaporation atlas for the contiguous 48 United States, NOAA Technical Report NWS 33., (NTIS order number PB83-122440, NOAA, Washington, DC, price A07
Creation and Review Dates
Last DIF Revision Date: 2011-07-15