A New Technique to Estimate Sensible Heat Fluxes around Micrometeorological Towers Using Small Unmanned Aircraft Systems

Lee, Temple R.; Buban, Michael; Dumas, Edward; Baker, C. Bruce

doi:10.1175/jtech-d-17-0065.1

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A New Technique to Estimate Sensible Heat Fluxes around Micrometeorological Towers Using Small Unmanned Aircraft Systems

2017
By Lee, Temple R. ; Buban, Michael ; Dumas, Edward ; ...
Source: Journal of Atmospheric and Oceanic Technology, 34(9), 2103-2112

[PDF-1.55 MB]

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Journal Title:

Journal of Atmospheric and Oceanic Technology
Personal Author:

Lee, Temple R. ; Buban, Michael ; Dumas, Edward ; Baker, C. Bruce

Lee, Temple R. ; Buban, Michael ; Dumas, Edward ; Baker, C. Bruce Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; ARL (Air Resources Laboratory)

OAR (Oceanic and Atmospheric Research) ; ARL (Air Resources Laboratory) Less -
Description:

Upscaling point measurements from micrometeorological towers is a challenging task that is important for a variety of applications, for example, in process studies of convection initiation, carbon and energy budget studies, and the improvement of model parameterizations. In the present study, a technique was developed to determine the horizontal variability in sensible heat flux H surrounding micrometeorological towers. The technique was evaluated using 15-min flux observations, as well as measurements of land surface temperature and air temperature obtained from small unmanned aircraft systems (sUAS) conducted during a one-day measurement campaign. The computed H was found to be comparable to the micrometeorological measurements to within 5–10 W m−2. Furthermore, when comparing H computed using this technique with H determined using large-eddy simulations (LES), differences of <10 W m−2 were typically found. Thus, implementing this technique using observations from sUAS will help determine sensible heat flux variability at horizontal spatial scales larger than can be provided from flux tower measurements alone.
Keywords:

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Atmospheric Science Ocean Engineering
Source:

Journal of Atmospheric and Oceanic Technology, 34(9), 2103-2112
DOI:

https://doi.org/10.1175/jtech-d-17-0065.1
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0739-0572;1520-0426;
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PDF
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American Meteorological Society
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Journal Article
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urn:sha256:d1c05b7971f33f3538f39c4f76d7fe4a7b006400ee6ae8f298208b704cd77554
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A New Technique to Estimate Sensible Heat Fluxes around Micrometeorological Towers Using Small Unmanned Aircraft Systems

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