globalchange  > 气候减缓与适应
DOI: 10.1002/2014GL059830
论文题名:
Impact of increased water vapor on precipitation efficiency over northern Eurasia
作者: Ye H.; Fetzer E.J.; Wong S.; Behrangi A.; Olsen E.T.; Cohen J.; Lambrigtsen B.H.; Chen L.
刊名: Geophysical Research Letters
ISSN: 0094-10145
EISSN: 1944-9876
出版年: 2014
卷: 41, 期:8
起始页码: 2941
结束页码: 2947
语种: 英语
英文关键词: atmospheric precipitable water ; High latitudes ; northern Eurasia ; precipitation ; relative humidity ; water vapor
Scopus关键词: Atmospheric humidity ; Atmospheric temperature ; Climatology ; Efficiency ; Precipitation (chemical) ; Air temperature changes ; Atmospheric infrared sounders ; High Latitudes ; Northern Eurasia ; Precipitable water ; Precipitation efficiency ; Total precipitable water ; Winter precipitation ; Water vapor ; air temperature ; AIRS ; latitude ; precipitable water ; precipitation intensity ; relative humidity ; seasonal variation ; temperature anomaly ; temporal period ; trend analysis ; water vapor ; Eurasia
英文摘要: This study investigates the relationships among water vapor, precipitation efficiency, precipitation amount, and air temperature anomalies on monthly time scales over northern Eurasia for winter and summer 2003-2010. Daily precipitation and temperature records at 505 historical stations, and atmospheric total precipitable water vapor and relative humidity data from Atmospheric Infrared Sounders, are used for analysis. Results show that higher atmospheric precipitable water associated with warmer temperature directly contributes to winter precipitation amount but has little impact on winter precipitation efficiency. However, accelerated decreasing relative humidity associated with higher temperature is the primary factor in the reduction of precipitation efficiency and precipitation amount regardless of higher precipitable water in summer. This study suggests that there are evident seasonal differences in precipitation trend associated with air temperature changes over the study region. Air temperature modifies a key atmospheric water variable that directly controls precipitation for that particular season. Key Points Increasing water vapor directly contributes to winter precipitation Reduced summer precipitation is related to accelerated decreasing RH ©2014. The Authors.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898725353&doi=10.1002%2f2014GL059830&partnerID=40&md5=b87de76b68a0630ceaca4846decb01cc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7409
Appears in Collections:气候减缓与适应

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作者单位: Department of Geosciences and Environment, California State University, Los Angeles, CA, United States

Recommended Citation:
Ye H.,Fetzer E.J.,Wong S.,et al. Impact of increased water vapor on precipitation efficiency over northern Eurasia[J]. Geophysical Research Letters,2014-01-01,41(8).
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