2009-2018年云南省降水站点数据

借助云南省 2009−2018 年 25 个气象站点逐月降水量分析 TRMM 3B43 降水数据特征，利用相关系数（R）、偏离率（BIAS）、均方根误差（RMSE）和平均绝对误差对 TRMM 3B43 月降水数据和各站点进行适用性分析，并探讨该数据与海拔、坡度、坡向之间的关系，最后将 TRMM 3B43 月降水数据降尺度至季、年尺度，并对其进行适用性评价，为复杂地形地区开展区域降水研究、水文预报等提供可靠降水产品数据。

This study analyzes the characteristics of TRMM 3B43 precipitation data using monthly in-situ precipitation observations collected from 25 meteorological stations in Yunnan Province during 2009–2018. Subsequently, the applicability of TRMM 3B43 monthly precipitation data is assessed against the station observations using four metrics: correlation coefficient (R), bias (BIAS), root mean square error (RMSE), and mean absolute error. Furthermore, the relationships between this precipitation dataset and topographic variables including elevation, slope, and aspect are investigated. Finally, the TRMM 3B43 monthly precipitation data is downscaled to seasonal and annual scales, and its applicability is re-evaluated. This work provides reliable precipitation product data for regional precipitation research, hydrological forecasting and other relevant studies in complex terrain regions.

搜集汇总

背景与挑战

背景概述

该数据集包含2009年至2018年云南省25个气象站的月降水数据，主要用于评估TRMM 3B43降水数据在云南地区的适用性，通过统计指标分析其与实测数据的相关性，并探讨降水与地形因素的关系。数据来源于中国气象数据网，经过处理转换为月尺度，适用于气候研究和地理分析，但需通过离线申请方式获取。