United States Climate Normals, 1971-2000. State, Regional, and National Monthly Temperature Weighted by Area 1971-2000 (and Previous Normals Periods). Historical Climatography Series No. 4-1

摘要

Historical Climatography Series (HCS) 4-1,2,3 and 5-1,2 include normals and standard deviations for the five 30-year normals periods and the 70-year period between 1931-2000 for U.S. States, regions, and the conterminous United States. Statistics are based on weighted divisional data from Climatography of the United States, Number 85 for U.S. States, and in turn from these state values for regional and national computations. Two sets of regions are included: (1) U.S. Census Bureau regions, excluding Hawaii and Alaska from the Western Region$ and (2) NCDC regions used for climate monitoring (Karl and Koss, 1984). HCS 4-1,2, and 3 provide area-weighted temperature and precipitation statistics, while HCS 5-1,2 provide population-weighted degree day statistics. Population weights are based on the 2000 U.S. Census. Both area and population weights are provided. The normals and standard deviations include values for each of the 12 calendar months and an annual value, plus 4 seasonal averages in HCS 4-3. The data are presented by abbreviation/name and number for a state, region, or the conterminous U.S. State data for the conterminous United States are presented alphabetically, followed by data for Alaska, Hawaii, Puerto Rico, the Virgin Islands, and Pacific trust territories, followed by regional/national data. Data elements include time of observation-corrected mean temperature (deg F), precipitation (inches), and heating and cooling degree days (base 65 deg F).