Arid
DOI10.5194/amt-5-243-2012
Measurement of turbulent water vapor fluxes using a lightweight unmanned aerial vehicle system
Thomas, R. M.1; Lehmann, K.1; Nguyen, H.1; Jackson, D. L.2,3; Wolfe, D.3; Ramanathan, V.1
通讯作者Thomas, R. M.
来源期刊ATMOSPHERIC MEASUREMENT TECHNIQUES
ISSN1867-1381
EISSN1867-8548
出版年2012
卷号5期号:1页码:243-257
英文摘要

We present here the first application of a lightweight unmanned aerial vehicle (UAV) system designed to measure turbulent properties and vertical latent heat fluxes (lambda E). Such measurements are crucial to improve our understanding of linkages between surface moisture supply and boundary layer clouds and phenomena such as atmospheric rivers. The application of UAVs allows for measurements on spatial scales complimentary to satellite, aircraft, and tower derived fluxes. Key system components are: a turbulent gust probe; a fast response water vapor sensor; an inertial navigation system (INS) coupled to global positioning system (GPS); and a 100 Hz data logging system. We present measurements made in the continental boundary layer at the National Aeronautics and Space Administration (NASA) Dryden Research Flight Facility located in the Mojave Desert. Two flights consisting of several horizontal straight flux run legs up to ten kilometers in length and between 330 and 930 m above ground level (m a. g. l.) are compared to measurement from a surface tower. Surface measured lambda E ranged from -53 W m(-2) to 41 W m(-2), and the application of a Butterworth High Pass Filter (HPF) to the datasets improved agreement to within +/-12 W m(-2) for 86% of flux runs, by removing improperly sampled low frequency flux contributions. This result, along with power and co-spectral comparisons and consideration of the differing spatial scales indicates the system is able to resolve vertical fluxes for the measurement conditions encountered. Challenges remain, and the outcome of these measurements will be used to inform future sampling strategies and further system development.


类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000300233500013
WOS关键词LATENT-HEAT ; AIRBORNE ; AIRCRAFT ; PROFILES ; CARBON ; ERRORS
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/171459
作者单位1.Univ Calif San Diego, Ctr Clouds Chem & Climate C4, Scripps Inst Oceanog SIO, La Jolla, CA 92093 USA;
2.Univ Colorado, NOAA, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA;
3.NOAA, Earth Syst Res Lab, Boulder, CO USA
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Thomas, R. M.,Lehmann, K.,Nguyen, H.,et al. Measurement of turbulent water vapor fluxes using a lightweight unmanned aerial vehicle system[J],2012,5(1):243-257.
APA Thomas, R. M.,Lehmann, K.,Nguyen, H.,Jackson, D. L.,Wolfe, D.,&Ramanathan, V..(2012).Measurement of turbulent water vapor fluxes using a lightweight unmanned aerial vehicle system.ATMOSPHERIC MEASUREMENT TECHNIQUES,5(1),243-257.
MLA Thomas, R. M.,et al."Measurement of turbulent water vapor fluxes using a lightweight unmanned aerial vehicle system".ATMOSPHERIC MEASUREMENT TECHNIQUES 5.1(2012):243-257.
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