Back to CDIAC Home Page
United States Historical Climatology Network Daily Temperature and Precipitation Data (1991)
This package consists of a data base containing daily observations of maximum and minimum temperature and precipitation amounts at 138 U.S. stations. These stations are a specially chosen subset of the 1219-station United States Historical Climatology Network (HCN), which was compiled by the National Climatic Data Center (Asheville, North Carolina) and is contained in NDP-019/R1. The daily data network (referred to as the HCN/D) consists of stations considered to be the best of those in the HCN, selected to provide effective coverage of the contiguous U.S. after considering the temporal homogeneity of each station's observing times, instrument positioning, and surroundings. The data for each station extend through 1987, and most station records are complete for at least 80 years. The daily resolution of these data lends maximum flexibility for studies attempting to detect and monitor long-term climatic changes on a regional scale. The data are contained in seven files (one station-inventory file, one station-history file, and five temperature and precipitation data files). The files range in size from 10 kB to approximately 31 MB.
Please note: users interested in daily data for the United States should
access CDIAC's NDP-070
for an updated (through 1997) and greatly expanded database of daily maximum
temperature, minimum temperature, precipitation, snowfall amount, and snow cover
data.
d9k 6/02/1999
Back to CDIAC Home Page