GPCC Climatology Version 2011 at 1.0°: Monthly Land-Surface Precipitation Climatology for Every Month and the Total Year from Rain-Gauges built on GTS-based and Historic Data

This is the GPCC Precipitation Climatology providing the mean monthly global land-surface precipitation for every month of the year and the annual total. It is based on the 67,200 stations world-wide that feature record durations of 10 years or longer, for the target reference period January 1951 to December 2000. However, if no station data were available for the target period, earlier or later data records of 10 years or longer are considered, yielding a high station density and temporal stability for the climatology. This climatology is available on a regular latitude/longitude grid with a spatial resolution of 1.00° x 1.00°. This product has been developed as a background field, for superposition of an interpolated anomaly field according to the period of interest. All other GPCC products utilize the background fields of the GPCC Climatology to grid the monthly data at the corresponding resolution with the anomaly interpolation method.

本数据集为全球降水气候学数据集（GPCC Precipitation Climatology），提供全球陆面逐月平均降水量与年总降水量。其数据基础为全球67200个气象站的观测记录，目标参考时段设定为1951年1月至2000年12月，入选站点的观测时长均不低于10年。但若目标参考时段内无可用站点观测数据，则可采用时长不低于10年的前后时段观测记录，以此保障该气候学数据集具备较高的站点密度与时间稳定性。该气候学数据集采用规则经纬网格存储，空间分辨率为1.00°×1.00°。本数据集被开发为背景场，用于叠加基于目标研究时段生成的插值距平场。其余所有GPCC产品均借助该气候学数据集的背景场，通过距平插值方法将逐月观测数据格点化为对应分辨率的格点数据。