ArcticRIMS: Daily Precipitation, From Monthly Station Records And Disaggregation, Aggregated by Administrative Regions

This data set, spanning the period 1980-2008, is assembled from (1) interpolation of observed monthly totals from available station records with bias adjustments (2) disaggregation of the monthly totals to daily totals, making use of daily precipitation forecasts from the National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) reanalysis [Kalnay et al., 1996]. Station records from 1990 onwards are considered to be too sparse to assemble gridded products using this approach. A daily product from 1980 through the present is described separately (DAILY PRECIPITATION FROM STATISTICAL RECONSTRUCTIONS). This latter product, which is continually updated, makes use of a suite of variables from the NCEP/NCAR reanalysis. The data are presented in 24 sub-datasets of different spatial and temporal aggregations.

本数据集时间跨度为1980年至2008年，其构建流程分为两步：(1) 对现有气象站观测的月降水总量数据进行插值处理，并施加偏差校正；(2) 结合美国国家环境预报中心/国家大气研究中心（National Centers for Environmental Prediction/National Center for Atmospheric Research, NCEP/NCAR）再分析资料[Kalnay等，1996]提供的日降水预报数据，将月降水总量拆解为日降水总量。1990年及以后的气象站观测数据因站点分布过于稀疏，无法采用该方法构建格点数据产品。另有1980年至今的日降水数据集（DAILY PRECIPITATION FROM STATISTICAL RECONSTRUCTIONS）已有单独说明。该持续更新的后续数据集采用了NCEP/NCAR再分析资料中的多套气象变量。本数据集包含24个具备不同时空聚合特征的子数据集。