摘要
沙尘通过改变近地表气温和太阳总辐射对气候变化产生影响。根据巴丹吉林沙漠腹地小型气象站所观测到的风速、气温和总辐射数据,分析了沙尘事件对近地表气温和太阳总辐射的影响。结果表明:(1)沙漠腹地的沙尘事件多发生在春季,具有平均风速低、持续时间短的特点。平均风速主要集中在6.0-6.5 m/s,持续时间多在1-2 h。(2)沙尘会削弱到达近地表的总辐射,平均衰减约为35.47%。(3)沙尘能降低近地表的气温,降温幅度多在0%-10%。
Aeolian sand and dust can significantly change near-surface temperature and total solar radiation,and therefore has an impact on climate change.Based on the data of wind speed,air temperature and global radiation measured by a standard meteorological station in the hinterland of Badain Jaran Desert,the influence of aeolian sand-dust events on near-surface temperature and total solar radiation was investigated.The results are as follows:(1)Aeolian sand-dust events occur most frequently in spring and have low average wind speed and short duration.The average wind speed is mainly concentrated in 6.0-6.5 m/s,and the duration is mostly within 1-2 h.(2)The global radiation reaching near-surface is reduced by aeolian sand-dust events,and the average attenuation is 35.47%.(3)Aeolian sand-dust events lower near-surface temperature,and the reduction range of temperature is mainly 0%~10%.
作者
吴盈盈
刘旭阳
王振亭
WU Yingying;LIU Xuyang;WANG Zhenting(Key Laboratory of Desert and Desertification,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《沙漠与绿洲气象》
2022年第2期85-90,共6页
Desert and Oasis Meteorology
基金
国家重点研发计划(2020YFA0608404)
国家自然科学基金项目(41571006)。
关键词
沙尘事件
辐射
气温
巴丹吉林沙漠
aeolian sand-dust event
radiation
temperature
Badain Jaran Desert
