Sensitivity of WRF-Simulated 2 m Temperature and Precipitation to Physics Options over the Loess Plateau

IF 2.1 4区 地球科学 Q3 METEOROLOGY & ATMOSPHERIC SCIENCES Advances in Meteorology Pub Date : 2024-05-02 DOI:10.1155/2024/6633255
Siliang Liu
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引用次数: 0

Abstract

The current paper evaluates the weather research and forecasting (WRF) model sensitivity to five different combinations of cumulus, microphysics, radiation, and planetary boundary layer (PBL) schemes over Loess Plateau for the period 2015, in terms of 2 m temperature and precipitation. The WRF configuration consists of a 10 km resolution domain nested in a coarser domain driven by European Center for Medium-Range Weather Forecasts Reanalysis (ERA-Interim) data. The model simulated 2 m temperature and precipitation have been evaluated at daily and monthly scales with gridded observational dataset. The analysis shows that all experiments reproduce well the daily 2 m temperature, with overestimation particularly in the low-temperature range. Precipitation is less well simulated, with underestimation in all range, especially for intense rainfall. Comparing with ERA-Interim, WRF shows no clear benefit in simulating daily 2 m temperature while prominent improvement in simulating daily precipitation. WRF simulations capture the annual cycle of monthly 2 m temperature and precipitation with a warm bias and wet bias for most experiments in summer. Some reasonable configurations are identified. The “best” configuration depends on the criteria.
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黄土高原上空 WRF 模拟的 2 米气温和降水对物理选项的敏感性
本文评估了 2015 年黄土高原天气研究和预报(WRF)模式对积云、微物理、辐射和行星边界层(PBL)方案五种不同组合的敏感性,以 2 米温度和降水量为指标。WRF 配置包括一个 10 千米分辨率域,嵌套在由欧洲中期天气预报再分析中心(ERA-Interim)数据驱动的更粗域中。利用网格观测数据集对模式模拟的 2 米气温和降水量进行了日和月评估。分析表明,所有试验都很好地再现了每日 2 米气温,尤其是在低温范围内高估了气温。降水的模拟效果较差,在所有范围内都有低估,尤其是强降雨。与ERA-Interim相比,WRF在模拟日2米气温方面没有明显优势,但在模拟日降水方面有显著改善。WRF 模拟捕捉到了月 2 米气温和降水的年周期,但在夏季的大多数试验中偏暖、偏湿。确定了一些合理的配置。最佳 "配置取决于标准。
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来源期刊
Advances in Meteorology
Advances in Meteorology 地学天文-气象与大气科学
CiteScore
5.30
自引率
3.40%
发文量
80
审稿时长
>12 weeks
期刊介绍: Advances in Meteorology is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles in all areas of meteorology and climatology. Topics covered include, but are not limited to, forecasting techniques and applications, meteorological modeling, data analysis, atmospheric chemistry and physics, climate change, satellite meteorology, marine meteorology, and forest meteorology.
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