Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.5194/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
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ISSN | 1867-1381 |
EISSN | 1867-8548 |
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 |
推荐引用方式 GB/T 7714 | 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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