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针对江苏省淮北地区土壤旱情评估问题,采用WRF-NoahLSM耦合模型模拟了淮北地区2011年2~7月降水量及土壤含水率,并与实测的降水量及土壤含水率做了对比,进而评估了淮北地区的土壤旱情。结果表明,WRF-NoahLSM耦合模型能较准确地模拟降水发生日和弱降水的降水量,以及2~7月土壤含水率变化规律;模拟土壤含水率的时空合格率大部分达到了60%以上,尤其是模拟深层土壤含水率的合格率较高;模拟评估淮北地区2、5、6月为中等干旱,3、4、7月为轻度干旱,在大部分地区模拟的干旱等级在干暖季略偏高,湿季略偏低。
According to the assessment of soil drought in Huaibei area of Jiangsu Province, the WRF-Noahls coupling model was used to simulate the precipitation and soil water content in Huaibei from February to July in 2011. The results were compared with the measured precipitation and soil water content, Soil drought in Huaibei area. The results show that the WRF-Noahlsm coupling model can accurately simulate the precipitation on the date of precipitation and weak precipitation, and the variation of soil moisture from February to July. The spatial and temporal pass rates of simulated soil moisture mostly reach over 60% In particular, the qualified rate of deep soil moisture in simulated deep soil was high. The moderate, moderate and severe droughts in February, May and June in Huaibei were simulated and mild drought in April, July and July respectively. The simulated drought in most areas was in dry and warm season Slightly high, slightly lower wet season.