Observed Land Surface Precipitation Data: 1850-1995 (GISS/Dai)
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https://cmr.earthdata.nasa.gov/search/concepts/C1214598324-SCIOPS.html
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资源简介：
[Source: NASA/GISS]
The datasets here contain monthly and annual anomaly precipitation analyses. Dataset 1 covers the period 1900-1988, while the extended and updated Dataset 2 covers the period 1850-1995.
Details of the analysis are described in the paper "Surface observed global land precipitation variations during 1900-1988" (Dai et al. 1997). Following are a few major specifics:
Anomalies are calculated relative to the 1951-1979 period. Values are in millimeters.
Resolution of the longitude-latitude grid is 2.5° × 2.5°. The center of grid cell (I,J) is at longitude (east) = -180.+(I-1)*2.5, latitude = -90.+(J-1)*2.5.
提供机构：
SCIOPS
