中国大陆月尺度融合降水数据集(2001-2018)
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该数据集为中国逐月降水量数据,空间分辨率为0.25°(约25km),时间为2001.1-2018.12。数据格式为mat。该数据集是根据气候预测中心基于全球统一测站的分析(CPC)降水数据集以及现代研究与应用回顾性分析2(MERRA2)降水数据集,通过程-克林-古普塔效率系数(CKGE)加权融合模型在中国大陆生成的。并且,使用基于中国雨量计的逐日降水分析(CGDPA)降水数据进行验证,验证结果可信。本数据集包含的地理空间范围是中国大陆地区。为了便于存储,数据存于mat文件中,降水单位为1mm。 mat数据可用Matlab软件进行提取处理,读取函数为load,语句表达为:load CWEP2P_2001_2018.mat,其中ff1为变量名;数据以3维(144×256×216)形式存储;144、256、216分别为数据的行、列、时间,时间取1时代表2001年1月,取2时代表2002年2月,以此类推。
This dataset is monthly precipitation data over Mainland China, with a spatial resolution of 0.25° (approximately 25 km), covering the period from January 2001 to December 2018, and stored in .mat format. This dataset was generated over Mainland China via the Croke-Kling-Gupta Efficiency (CKGE) weighted fusion model, using two source datasets: the Climate Prediction Center (CPC) global station-based precipitation analysis dataset and the Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) precipitation dataset. Moreover, it was validated using the China Gauge-based Daily Precipitation Analysis (CGDPA) precipitation dataset, and the validation results confirm its reliability. The spatial coverage of this dataset is Mainland China. For ease of storage, the data is saved in .mat format, with the unit of precipitation being 1 mm. The .mat data can be extracted and processed using MATLAB software, with the reading function being `load`, and the syntax is: `load CWEP2P_2001_2018.mat`, where `ff1` is the variable name. The data is stored in a 3-dimensional array with dimensions of 144×256×216; 144, 256, and 216 correspond to the rows, columns, and time steps of the dataset, respectively. A time index of 1 represents January 2001, an index of 2 represents February 2002, and the rest may be deduced by analogy.




