期刊
ATMOSPHERIC MEASUREMENT TECHNIQUES
卷 8, 期 8, 页码 3209-3218出版社
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/amt-8-3209-2015
关键词
-
资金
- Max Planck Society
- Leibniz Society
- Deutsche Forschungsgemeinschaft (DFG) [SPP 1276]
- EU COST Action [MP0806]
- Div Atmospheric & Geospace Sciences [1026123] Funding Source: National Science Foundation
Cloud measurements are usually carried out with airborne campaigns, which are expensive and are limited by temporal duration and weather conditions. Ground-based measurements at high-altitude research stations therefore play a complementary role in cloud study. Using the meteorological data (wind speed, direction, temperature, humidity, visibility, etc.) collected by the German Weather Service (DWD) from 2000 to 2012 and turbulence measurements recorded by multiple ultrasonic sensors (sampled at 10 Hz) in 2010, we show that the Umweltforschungsstation Schneefernerhaus (UFS) located just below the peak of Zugspitze in the German Alps, at a height of 2650 m, is a well-suited station for cloud-turbulence research. The wind at UFS is dominantly in the east-west direction and nearly horizontal. During the summertime (July and August) the UFS is immersed in warm clouds about 25% of the time. The clouds are either from convection originating in the valley in the east, or associated with synoptic-scale weather systems typically advected from the west. Air turbulence, as measured from the second- and third-order velocity structure functions that exhibit well-developed inertial ranges, possesses Taylor microscale Reynolds numbers up to 10(4), with the most probable value at similar to 3000. In spite of the complex topography, the turbulence appears to be nearly as isotropic as many laboratory flows when evaluated on the Lumley triangle.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据