Physics
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3411801l&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 11, CiteID L11801
Physics
8
Atmospheric Processes: Clouds And Aerosols, Geographic Location: Arctic Region (0718, 4207), Atmospheric Composition And Structure: Cloud/Radiation Interaction, Atmospheric Composition And Structure: Radiation: Transmission And Scattering
Scientific paper
Radiative transfer simulations are used to assess the expected magnitude of the diurnally-averaged shortwave aerosol first indirect effect in Arctic liquid water clouds, in the context of recently discovered longwave surface heating of order 3 to 8 W m-2 by this same aerosol effect detected at the Barrow, Alaska, ARM Site. We find that during March and April, shortwave surface cooling by the first indirect effect is comparable in magnitude to the longwave surface heating. During May and June, the shortwave surface cooling exceeds the longwave heating. Due to multiple reflection of photons between the snow or sea ice surface and cloud base, the shortwave first indirect effect may be easier to detect in surface radiation measurements than from space.
Lubin Dan
Vogelmann Andrew M.
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