GPCC Full Data Monthly Version 2022 at 0.5°: Monthly Land-Surface Precipitation from Rain-Gauges built on GTS-based and Historic Data

This is the centennial GPCC Full Data Monthly Product of monthly global land-surface precipitation based on the ~86,000 stations world-wide that feature record durations of 10 years or longer. The data coverage per month varies from ~20,000 (previous version 15,000) to more than 52,000 stations. The Full Data Monthly Product will be updated at irregular time intervals subsequent to significant data base improvements. This product contains the monthly totals on a regular grid with a spatial resolution of 0.25° x 0.25°, 0.5° x 0.5°, 1.0° x 1.0°, and 2.5° x 2.5° latitude by longitude. Precipitation anomalies at the stations are interpolated and then superimposed on the GPCC Climatology V2022 in the corresponding resolution (DOIs: 10.5676/DWD_GPCC/Clim_M_V2022_025, 10.5676/DWD_GPCC/Clim_M_V2022_050, 10.5676/DWD_GPCC/Clim_M_V2022_100, and 10.5676/DWD_GPCC/Clim_M_V2022_250). The temporal coverage of the dataset ranges from January 1891 until December 2020.

The GPCC Full Data Monthly Product is the most accurate in situ precipitation reanalysis data set of GPCC. Moreover it supports regional climate monitoring, model validation, climate variability analysis and water resources assessment studies.

本数据集为全球降水气候学中心（Global Precipitation Climatology Centre，简称GPCC）全数据月度产品，依托全球约86000个观测时长不低于10年的气象站点，生成全球陆面逐月降水数据，其时间跨度覆盖百年尺度。各月有效观测站点覆盖量约在20000个（旧版本为15000个）至52000余个之间波动。本全数据月度产品将在数据库完成重大升级后，以非固定时间间隔进行更新。本产品提供四种空间分辨率的规则格网逐月降水总量数据，分辨率分别为0.25°×0.25°、0.5°×0.5°、1.0°×1.0°及2.5°×2.5°经纬度格网。站点降水距平数据先经插值处理，再叠加至对应分辨率的GPCC气候态V2022数据集上，对应的DOI编号为：10.5676/DWD_GPCC/Clim_M_V2022_025、10.5676/DWD_GPCC/Clim_M_V2022_050、10.5676/DWD_GPCC/Clim_M_V2022_100及10.5676/DWD_GPCC/Clim_M_V2022_250。本数据集的时间覆盖范围为1891年1月至2020年12月。
GPCC全数据月度产品是GPCC旗下精度最高的原位降水再分析数据集，可支撑区域气候监测、模式验证、气候变率分析以及水资源评估等相关研究工作。

搜集汇总

背景与挑战

背景概述

GPCC Full Data Monthly Version 2022是一个全球陆地表面月降水数据集，基于全球约86,000个长期记录雨量站构建，时间覆盖1891年1月至2020年12月，提供0.25°至2.5°多种空间分辨率。该数据集采用改进的插值方法（包括气候学填充）以避免伪影，并包含降水、站点数量、插值误差等多个变量，是GPCC最准确的现场降水再分析产品，适用于气候监测、模型验证和水资源评估等研究。