Tropospheric Water Vapor Transport as Determined from Airborne Lidar Measurements
Tropospheric Water Vapor Transport as Determined from Airborne Lidar Measurements
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DOI：
10.1175/2010jtecha1418.1
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发表时间：
2010-12
影响因子：
2.2
通讯作者：
A. Schäfler;A. Dörnbrack;C. Kiemle;S. Rahm;M. Wirth
中科院分区：
文献类型：
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作者：
A. Schäfler;A. Dörnbrack;C. Kiemle;S. Rahm;M. Wirth
摘要2007年在欧洲进行的观测系统研究和可预报性实验（THORPEX）区域活动中，由德国航空航天中心（DLR）的Falcon研究飞机上的一台新型四波长差分吸收激光雷达和一台扫描2 μm多普勒测风激光雷达进行了首次共点测量。一个使命，其特点是非常高的数据覆盖率（47%的比湿度q和63%的水平风速h）被选中来计算平流输送的大气水分qh沿着1600公里的一个温带气旋的温暖部门。并与ECMWF集成预报系统计算的特殊1小时模式资料进行了比较。沿着剖面，该模型平均低估了风速-2.8%（-0.6 m s-1），高估了干层和边界层的湿度，导致湿偏差为17.1%（0.2 g kg-1）。然而，ECMWF模式…
AbstractThe first collocated measurements during THORPEX (The Observing System Research and Predictability Experiment) regional campaign in Europe in 2007 were performed by a novel four-wavelength differential absorption lidar and a scanning 2-μm Doppler wind lidar on board the research aircraft Falcon of the Deutsches Zentrum fur Luft- und Raumfahrt (DLR). One mission that was characterized by exceptionally high data coverage (47% for the specific humidity q and 63% for the horizontal wind speed υh) was selected to calculate the advective transport of atmospheric moisture qυh along a 1600-km section in the warm sector of an extratropical cyclone. The observations are compared with special 1-hourly model data calculated by the ECMWF integrated forecast system. Along the cross section, the model underestimates the wind speed on average by −2.8% (−0.6 m s−1) and overestimates the moisture at dry layers and in the boundary layer, which results in a wet bias of 17.1% (0.2 g kg−1). Nevertheless, the ECMWF mode...