CRU TS3.22: Climatic Research Unit (CRU) Time-Series (TS) Version 3.22 of High Resolution Gridded Data of Month-by-month Variation in Climate (1901-2013)

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 3.22 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. 2013. In addition to updating the dataset with 2013 data, the v3.22 release corrects an error in the v3.21 dataset. This is summarised in the document, 'CRU_Advisory_v3.2x_NE_Africa.txt', and affects PRE and WET variables only. There are several known issues with the current dataset which cannot be resolved in the timeframe of this release; they will be addressed in the future.

气候研究单元（Climatic Research Unit，CRU）TS（时间序列，time-series）数据集记录了近一个世纪以来逐月的气候变化特征。该数据集基于全球范围内4000余个气象站点提供的月均日最高、最低气温档案，以0.5×0.5度的高分辨率网格进行计算，可用于开展气候变化相关研究。CRU TS 3.22版本涵盖1901年1月至2013年12月期间的如下变量：云量、气温日较差、霜日频率、潜在蒸散量（Potential Evapotranspiration, PET）、降水量、日平均气温、月均日最高与最低气温、水汽压以及湿日频率。该3.22版本除将数据集更新至2013年数据外，还修正了3.21版本数据集存在的一处错误，相关错误说明已整理至文档'CRU_Advisory_v3.2x_NE_Africa.txt'中，且仅影响PRE（降水量，Precipitation）与WET（湿日频率，Wet day frequency）两个变量。当前版本数据集仍存在若干已知问题，受限于本次发布的时间窗口无法及时修正，相关问题将在后续版本中予以解决。

搜集汇总

背景与挑战

背景概述

该数据集是CRU TS3.22版本的高分辨率网格气候时间序列数据，覆盖1901年至2013年，基于全球4000多个气象站的月平均温度数据计算，提供0.5x0.5度网格上的月变化气候变量，包括云量、降水量、温度等。v3.22版本修正了前期版本中的错误，并更新至2013年数据，适用于气候变化研究。