多源降水产品在西南地区大湟江流域流量模拟中的对比研究

常勇; 王紫滢; 齐尧勇; 康志强

doi:10.20040/j.cnki.1000-7709.2025.20241417

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多源降水产品在西南地区大湟江流域流量模拟中的对比研究

更新时间：2026-02-25

- 多源降水产品在西南地区大湟江流域流量模拟中的对比研究
- Issue 7, Pages: 26-30(2025)
- 作者机构：
  
  1. 河海大学地球科学与工程学院
  2. 广西壮族自治区地质矿产勘查开发局
- 作者简介：
- 基金信息：
- DOI：10.20040/j.cnki.1000-7709.2025.20241417
  CLC： P333
- Published：2025
- 稿件说明：
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常勇, 王紫滢, 齐尧勇, et al. 多源降水产品在西南地区大湟江流域流量模拟中的对比研究[J]. 2025, (7): 26-30.
DOI：

常勇, 王紫滢, 齐尧勇, et al. 多源降水产品在西南地区大湟江流域流量模拟中的对比研究[J]. 2025, (7): 26-30. DOI： 10.20040/j.cnki.1000-7709.2025.20241417.

摘要

为研究不同降水产品在中国西南地区流量模拟中的适用性，对比了5种卫星降水产品(CHIRPS、CMORPH、TRMM、PERSIANN、IMERG)和1种再分析降雨数据(ERA5)在大湟江流域的精度及其用于流域流量模拟的可行性，并调查了模型校正对降雨误差的弥补效应。结果表明，ERA5日降雨量与雨量站点实测数据(参考降雨)最接近，但严重高估了年降雨量，CHIRPS、TRMM和PERSIANN日降雨量与参考降雨的相似度最低，IMERG、TRMM和PERSIANN的年降雨量最接近参考降雨。整个模拟期内，参考降雨的流量模拟结果最佳，CHIRPS和PERSIANN的结果最差，CMORPH、TRMM和IMERG的结果略差于参考降雨。模型校正能有效弥补ERA5的降雨误差，显著改善其模拟结果，模型校正对其他降雨数据模拟结果的影响有限。

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