Aerosol optical depths and direct radiative perturbations by species and source type

Details Aerosol optical depths and direct radiative perturbations by species and source type Aerosol optical depths and direct radiative perturbations by species and source type

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3212803r&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 12, CiteID L12803

Physics

28

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Atmospheric Composition And Structure: Radiation: Transmission And Scattering, Atmospheric Composition And Structure: Troposphere: Composition And Chemistry

Scientific paper

We have used the Laboratoire de Météorologie Dynamique General Circulation Model (LMDZT GCM) to estimate the relative contributions of different aerosol source types (i.e., fossil fuels, biomass burning, and ``natural'') and aerosol species to the aerosol optical depth (AOD) and direct aerosol radiative perturbation (DARP) at the top-of-atmosphere. The largest estimated contribution to the global annual average AOD (0.12 at 550 nm) is from natural (58%), followed by fossil fuel (26%), and biomass burning (16%) sources. The global annual mean all-sky DARP in the shortwave (SW) spectrum by sulfate, black carbon (BC), organic matter (OM), dust, and sea salt are -0.62, +0.55, -0.33, -0.28, and -0.30 Wm-2, respectively. The all-sky DARP in the longwave spectrum (LW) is not negligible and is a bit less than half of the SW DARP. The net (i.e., SW+LW) DARP distribution is predominantly negative with patches of positive values over the dust source regions, and off the west coasts of Southern Africa and South and North America. For dust aerosols the SW effect is partially offset by LW greenhouse effect.

Affiliated with

Also associated with

No associations

Rating

Aerosol optical depths and direct radiative perturbations by species and source type does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Aerosol optical depths and direct radiative perturbations by species and source type, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aerosol optical depths and direct radiative perturbations by species and source type will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-874604