CRU TS3.21: Climatic Research Unit (CRU) Time-Series (TS) Version 3.21 of High Resolution Gridded Data of Month-by-month Variation in Climate (Jan. 1901 - Dec. 2012)

Climatic Research Unit (CRU) TS (time-series) datasets are month-by-month variations in climate over the last century or so. These are calculated on high-resolution (0.5x0.5 degree) grids, which are based on an archive of monthly average daily maximum and minimum temperatures provided by more than 4000 weather stations distributed around the world. They allow variations in climate to be studied. CRU TS 3.21 variables are cloud cover, diurnal temperature range, frost day frequency, PET, precipitation, daily mean temperature, monthly average daily maximum and minimum temperature, vapour pressure and wet day frequency for the period Jan. 1901 - Dec. 2012. In addition to updating the dataset with 2012 data, the v3.21 release corrects two errors in the v3.20 dataset.

气候研究单位（Climatic Research Unit, CRU）时间序列（time-series, TS）数据集记录了近一个世纪以来逐月的气候变化情况。该数据集以0.5°×0.5°的高分辨率网格进行计算，其数据来源为全球范围内4000余个气象站提供的逐日最高、最低气温月平均值档案，可用于开展气候变化相关研究。CRU TS 3.21版本涵盖1901年1月至2012年12月期间的如下变量：云量、气温日较差、霜冻日数、潜在蒸散量（PET）、降水量、日平均气温、逐日最高与最低气温月平均值、水汽压以及湿日频率。该3.21版本除了将数据集更新至2012年数据外，还修正了3.20版本中的两处错误。

搜集汇总

背景与挑战

背景概述

CRU TS3.21数据集提供1901年1月至2012年12月期间的高分辨率（0.5x0.5度）网格化月度气候变异数据，基于全球4000多个气象站的观测，涵盖云量、温度、降水等多个气候变量，用于研究气候变化。该版本更新了2012年数据并修正了之前版本的错误。