东疆黑戈壁陆面过程参数及陆面模式离线模拟  

Land Surface Process Parameters and Offline Simulation of Land Surface Model in the Black Gobi Region of Eastern Xinjiang

作　　者：买买提艾力·买买提依明[1,2,3] 阿吉古丽·沙依提 王豫 高佳程 刘军建 琚陈相 Ali Mamtimin;Hajigul Sayit;WANG Yu;GAO Jiacheng;LIU Junjian;JU Chenxiang(Institute of Desert Meteorology,CMA/National Observation and Research Station of Desert Meteorology,Taklimakan Desert of Xinjiang/Taklimakan Desert Meteorology Field Experiment Station of CMA,Urumqi 830002,China;Xinjiang Key Laboratory of Desert Meteorology and Sandstorm,Urumqi 830002,China;Key Laboratory of Tree-ring Physical and Chemical Research,CMA,Urumqi 830002,China;Xinjiang Meteorological Society,Urumqi 830002,China)

机构地区：[1]中国气象局乌鲁木齐沙漠气象研究所/新疆塔克拉玛干沙漠气象国家野外科学观测研究站/中国气象局塔克拉玛干沙漠气象野外科学试验基地,新疆乌鲁木齐830002 [2]新疆沙漠气象与沙尘暴重点实验室,新疆乌鲁木齐830002 [3]中国气象局树木年轮理化重点实验室,新疆乌鲁木齐830002 [4]新疆气象学会,新疆乌鲁木齐830002

出　　处：《沙漠与绿洲气象》2024年第1期20-27,共8页Desert and Oasis Meteorology

基　　金：中央级公益科研院所基本科研业务费项目(IDM2021001,IDM2017001);科技创新团队(天山创新团队)项目(2022TSYCTD0007);自治区共享平台项目(PT2203);自治区少数民族特培项目。

摘　　要：新疆东部黑戈壁气候恶劣、人迹罕至,是具有黑色砾石下垫面的生态脆弱区。利用东疆哈密戈壁陆气相互作用站2018年全年观测资料,给出该戈壁地表动力学与热力学粗糙度、比辐射率和地表反照率等陆面过程特征参数,并将这些参数代入Noah模式对该戈壁热通量、地表温度及土壤温湿度进行模拟。结果表明:(1)东疆黑戈壁下垫面动力学粗糙度为1.13×10^(-3) m,热力学粗糙度为0.32×10^(-3) m,比辐射率为0.905。(2)地表反照率日变化呈早晚高、中午低的“U”型曲线。12月因地面积雪反照率最高,年内极大值出现在12月8日,为0.79,年均反照率为0.29。(3)将改进后的陆面过程参数代入Noah模式,大大提高了模式在戈壁区域的模拟能力。The black gobi in eastern Xinjiang,as an ecologically fragile area with a harsh climate,little human presence and black gravel substratum,has unique land surface process parameters.In this paper,a systematic study of the local kinetic roughness,thermodynamic roughness,specific emissivity and surface albedo and their parameterization schemes was conducted based on the observations of the land-atmospheric interaction station at gobi region of Hami in eastern Xinjiang throughout 2018,and the following conclusions were obtained:(1)The aerodynamic roughness length of the eastern Xinjiang black gobi sub-bedding surface is 1.13×10^(-3),the thermodynamic roughness is 0.32×10^(-3) m,and the specific emissivity is 0.905.(2)The daily variation of surface albedo in the black gobi region of eastern Xinjiang is high in the morning and night,and lowest at noon.Albedo is the highest in December due to snow on the ground,and the annual maximumg is 0.79 on December 8,with an annual average albedo of 0.29.(3)Bringing the improved land surface process parameters into the Noah model greatly improves the model's ability to simulate in the gobi region.

关 键 词：黑戈壁 地表粗糙度 地表反照率 Noah模式 

分 类 号：P404[天文地球—大气科学及气象学]