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Title: Biomass burning aerosol transport and vertical distribution over the South African-Atlantic region: Aerosol Transport Over SE Atlantic

Abstract

Aerosols from wild-land fires could significantly perturb the global radiation balance and induce the climate change. In this study, the Community Atmospheric Model version 5 (CAM5) with prescribed daily fire aerosol emissions is used to investigate the spatial and seasonal characteristics of radiative forcings of wildfire aerosols including black carbon (BC) and particulate organic matter (POM). The global annual mean direct radiative forcing (DRF) of all fire aerosols is 0.15 W m-2, mainly due to the absorption of fire BC (0.25 W m-2), while fire POM induces a weak negative forcing (-0.05 W m-2). Strong positive DRF is found in the Arctic and in the oceanic regions west of South Africa and South America as a result of amplified absorption of fire BC above low-level clouds, in general agreement with satellite observations. The global annual mean cloud radiative forcing due to all fire aerosols is -0.70 W m-2, resulting mainly from the fire POM indirect forcing (-0.59 W m-2). The large cloud liquid water path over land areas of the Arctic favors the strong fire aerosol indirect forcing (up to -15 W m-2) during the Arctic summer. Significant surface cooling, precipitation reduction and low-level cloud amount increase are also foundmore » in the Arctic summer as a result of the fire aerosol indirect effect. The global annual mean surface albedo forcing over land areas (0.03 W m-2) is mainly due to the fire BC-on-snow forcing (0.02 W m-2) with the maximum albedo forcing occurring in spring (0.12 W m-2) when snow starts to melt.« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [7]; ORCiD logo [7]; ORCiD logo [8]
  1. Department of Earth, Atmospheric and Planetary Sciences, Purdue University, West Lafayette Indiana USA
  2. Joint Center for Earth Systems Technology, UMBC, Baltimore Maryland USA; NASA Goddard Space Flight Center, Greenbelt Maryland USA
  3. NASA Goddard Space Flight Center, Greenbelt Maryland USA
  4. Department of Physical and Chemical Sciences, University of L'Aquila, L'Aquila Italy; Center of Excellence in Telesensing of Environment and Model Prediction of Severe events, University of L'Aquila, L'Aquila Italy
  5. Department of Physics, University of Athens, Athens Greece
  6. Finnish Meteorological Institute, Kuopio Finland
  7. Pacific Northwest National Laboratory, Richland Washington USA
  8. Department of Atmospheric Science, University of Wyoming, Laramie Wyoming USA
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1406681
Report Number(s):
PNNL-SA-123121
Journal ID: ISSN 2169-897X; KP1703020
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Geophysical Research: Atmospheres; Journal Volume: 122; Journal Issue: 12
Country of Publication:
United States
Language:
English

Citation Formats

Das, Sampa, Harshvardhan, H., Bian, Huisheng, Chin, Mian, Curci, Gabriele, Protonotariou, Anna P., Mielonen, Tero, Zhang, Kai, Wang, Hailong, and Liu, Xiaohong. Biomass burning aerosol transport and vertical distribution over the South African-Atlantic region: Aerosol Transport Over SE Atlantic. United States: N. p., 2017. Web. doi:10.1002/2016JD026421.
Das, Sampa, Harshvardhan, H., Bian, Huisheng, Chin, Mian, Curci, Gabriele, Protonotariou, Anna P., Mielonen, Tero, Zhang, Kai, Wang, Hailong, & Liu, Xiaohong. Biomass burning aerosol transport and vertical distribution over the South African-Atlantic region: Aerosol Transport Over SE Atlantic. United States. doi:10.1002/2016JD026421.
Das, Sampa, Harshvardhan, H., Bian, Huisheng, Chin, Mian, Curci, Gabriele, Protonotariou, Anna P., Mielonen, Tero, Zhang, Kai, Wang, Hailong, and Liu, Xiaohong. Wed . "Biomass burning aerosol transport and vertical distribution over the South African-Atlantic region: Aerosol Transport Over SE Atlantic". United States. doi:10.1002/2016JD026421.
@article{osti_1406681,
title = {Biomass burning aerosol transport and vertical distribution over the South African-Atlantic region: Aerosol Transport Over SE Atlantic},
author = {Das, Sampa and Harshvardhan, H. and Bian, Huisheng and Chin, Mian and Curci, Gabriele and Protonotariou, Anna P. and Mielonen, Tero and Zhang, Kai and Wang, Hailong and Liu, Xiaohong},
abstractNote = {Aerosols from wild-land fires could significantly perturb the global radiation balance and induce the climate change. In this study, the Community Atmospheric Model version 5 (CAM5) with prescribed daily fire aerosol emissions is used to investigate the spatial and seasonal characteristics of radiative forcings of wildfire aerosols including black carbon (BC) and particulate organic matter (POM). The global annual mean direct radiative forcing (DRF) of all fire aerosols is 0.15 W m-2, mainly due to the absorption of fire BC (0.25 W m-2), while fire POM induces a weak negative forcing (-0.05 W m-2). Strong positive DRF is found in the Arctic and in the oceanic regions west of South Africa and South America as a result of amplified absorption of fire BC above low-level clouds, in general agreement with satellite observations. The global annual mean cloud radiative forcing due to all fire aerosols is -0.70 W m-2, resulting mainly from the fire POM indirect forcing (-0.59 W m-2). The large cloud liquid water path over land areas of the Arctic favors the strong fire aerosol indirect forcing (up to -15 W m-2) during the Arctic summer. Significant surface cooling, precipitation reduction and low-level cloud amount increase are also found in the Arctic summer as a result of the fire aerosol indirect effect. The global annual mean surface albedo forcing over land areas (0.03 W m-2) is mainly due to the fire BC-on-snow forcing (0.02 W m-2) with the maximum albedo forcing occurring in spring (0.12 W m-2) when snow starts to melt.},
doi = {10.1002/2016JD026421},
journal = {Journal of Geophysical Research: Atmospheres},
number = 12,
volume = 122,
place = {United States},
year = {Wed Jun 21 00:00:00 EDT 2017},
month = {Wed Jun 21 00:00:00 EDT 2017}
}