华北水利水电大学学报（自然科学版）2023，Vol.44Issue(6)：66-74,86,10.DOI:10.19760/j.ncwu.zk.2023069
河南"7·20"极端暴雨的水文效应研究
Study on Hydrological Effect of "7·20" Extreme Rainstorm in Henan Province
摘要
Abstract
In this study,four GLDAS land surface model data(NOAH10-M,NOAH025-3H,CLSM10-M,and CLSM025-DA)and three GRACE/GRACE-FO gravity satellite data(CRS-M,JPL-M,and GSFZ-M)were used to reveal the spatial and temporal responses of soil water content and land water storage to the extreme rainstorms of the "7·20" rainstorms in Henan Province.The results are as follows.The average soil water content in Henan Province from 2000 to 2021 was 232.46 mm,and the soil water content in 2021 was 247.49 mm.Overall terrestrial water storage in Henan Province de-creased with a trend of 1.04 cm to 1.39 cm per year from 2003 to 2021,in which terrestrial water storage increased from July to September.As a result of the extreme rainstorm on "7·20" the soil water content on July 20,2021 was 660.91 mm,which was significantly higher than the average value of 525.09 mm from 2000 to 2020.The soil water content at different depths responded differently to the "7·20" extreme rainstorm,with the soil layers of 0 cm to 10 cm and 10 cm to 40 cm having a transient response to precipitation and being affected by the buffering effect,while the water content of the soil lay-ers of 40 cm to100 cm and 100 cm to 200 cm was more stable.Under the influence of precipitation,the land water reserves in Henan Province increased by 76,52,102,62 mm respectively from July to October 2021.The correlation analysis be-tween precipitation and water storage shows that the annual decline trend of regional water storage will cover up the seasonal change of water storage caused by precipitation.关键词
GLDAS/GRACE/陆地水储量/土壤含水量/极端降水/河南省Key words
GLDAS/GRACE/terrestrial water storage/soil moisture content/extreme rainstorm/Henan province分类
天文与地球科学引用本文复制引用
郭艺,甘甫平,闫柏琨,白娟,邢乃琛..河南"7·20"极端暴雨的水文效应研究[J].华北水利水电大学学报（自然科学版）,2023,44(6):66-74,86,10.基金项目
流域水循环要素与自然资源遥感定量调查监测(DD20230417). （DD20230417）
