Physics
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3520402c&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 20, CiteID L20402
Physics
4
Hydrology: Hydrometeorology, Hydrology: Evapotranspiration, Hydrology: Energy Budgets, Atmospheric Composition And Structure: Cloud/Radiation Interaction
Scientific paper
Clear sky downwelling longwave radiation (Rldc) and cloudy sky downwelling longwave radiation (Rld) formulas were tested across eleven sites in Florida. The Brunt equation, using air vapor pressure and temperature measurements, provides the best Rldc estimates with a root mean square error of less than around 12 Wm-2 across all sites. The Crawford and Duchon's cloudiness factor with Brunt equation is recommended for Rld calculations. This combined approach requires no local calibration and estimates Rld with a root mean square error of less than around 13 Wm-2 and squared correlation coefficients that typically exceed 0.9.
Choi Minha
Jacobs Jennifer M.
Kustas William P.
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