Improvement in Dust Storm Simulation by Considering Stone Coverage Effects for Stony Deserts in East Asia

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  • T. T. Sekiyama
    Meteorological Research Institute Japan Meteorological Agency Tsukuba Japan
  • Y. Kurosaki
    Arid Land Research Center Tottori University Tottori Japan
  • M. Kajino
    Meteorological Research Institute Japan Meteorological Agency Tsukuba Japan
  • M. Ishizuka
    Faculty of Engineering and Design Kagawa University Takamatsu Japan
  • B. Buyantogtokh
    Arid Land Research Center Tottori University Tottori Japan
  • J. Wu
    Meteorological Research Institute Japan Meteorological Agency Tsukuba Japan
  • T. Maki
    Meteorological Research Institute Japan Meteorological Agency Tsukuba Japan

書誌事項

公開日
2023-01-10
資源種別
journal article
権利情報
  • http://creativecommons.org/licenses/by-nc/4.0/
DOI
  • 10.1029/2022jd037295
公開者
American Geophysical Union (AGU)

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説明

<jats:title>Abstract</jats:title><jats:p>Approximately 50% of the Earth's deserts are covered with stony surfaces, not dunes. The stony surfaces often block or diminish mineral dust aerosol emissions through area fraction and roughness element effects. Incorporating these stone coverage effects is crucial for climate and environmental modeling research. Based on our field observations, this study combined the stone coverage effects into a dust simulation model for East Asia using two regression formulas and some constants. The double regression scheme assumed that the stone roughness density could be derived from the coarse fragment fraction of the SoilGrids 2.0 data set. According to the data set, the stone coverage is higher in Western Mongolia and Dzungaria and lower in the Chinese Gobi Desert and the Loess Plateau. Consequently, the model reproduced fewer dust aerosols in the higher coverage areas and more in the lower coverage areas. This simulation result was consistent with the World Meteorological Organization's current weather reports and satellite aerosol observations. The improved model reproduced the diversity of soil erodibility and was well balanced in performance statistics. This study is the first successful investigation of stone coverage effects on dust storm simulation using a realistic stone coverage map to the authors' best knowledge.</jats:p>

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