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First satellite‐detected perturbations of outgoing longwave radiation associated with blowing snow events over Antarctica
Author(s) -
Yang Yuekui,
Palm Stephen P.,
Marshak Alexander,
Wu Dong L.,
Yu Hongbin,
Fu Qiang
Publication year - 2014
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2013gl058932
Subject(s) - snow , environmental science , outgoing longwave radiation , atmospheric sciences , climatology , satellite , greenland ice sheet , longwave , meteorology , cloud cover , radiative transfer , geology , ice sheet , physics , convection , astronomy , cloud computing , quantum mechanics , geomorphology , computer science , operating system
We present the first satellite‐detected perturbations of the outgoing longwave radiation (OLR) associated with blowing snow events over the Antarctic ice sheet using data from Cloud‐Aerosol Lidar with Orthogonal Polarization and Clouds and the Earth's Radiant Energy System. Significant cloud‐free OLR differences are observed between the clear and blowing snow sky, with the sign and magnitude depending on season and time of the day. During nighttime, OLRs are usually larger when blowing snow is present; the average difference in OLRs between without and with blowing snow over the East Antarctic Ice Sheet is about −5.2 W/m 2 for the winter months of 2009. During daytime, in contrast, the OLR perturbation is usually smaller or even has the opposite sign. The observed seasonal variations and day‐night differences in the OLR perturbation are consistent with theoretical calculations of the influence of blowing snow on OLR. Detailed atmospheric profiles are needed to quantify the radiative effect of blowing snow from the satellite observations.