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Biomass Burning Plumes in the Vicinity of the California Coast: Airborne Characterization of Physicochemical Properties, Heating Rates, and Spatiotemporal Features

Hossein Mardi, Ali and Dadashazar, Hossein and MacDonald, Alexander B. and Braun, Rachel A. and Crosbie, Ewan and Xian, Peng and Thorsen, Tyler J. and Coggon, Matthew M. and Fenn, Marta A. and Ferrare, Richard A. and Hair, Johnathan W. and Woods, Roy K. and Jonsson, Haflidi H. and Flagan, Richard C. and Seinfeld, John H. and Sorooshian, Armin (2018) Biomass Burning Plumes in the Vicinity of the California Coast: Airborne Characterization of Physicochemical Properties, Heating Rates, and Spatiotemporal Features. Journal of Geophysical Research. Atmospheres, 123 (23). pp. 13560-13582. ISSN 2169-897X. doi:10.1029/2018jd029134.

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This study characterizes in situ airborne properties associated with biomass burning (BB) plumes in the vicinity of the California coast. Out of 231 total aircraft soundings in July–August 2013 and 2016, 81 were impacted by BB layers. A number of vertical characteristics of BB layers are summarized in this work (altitude, location relative to cloud top height, thickness, number of vertically adjacent layers, interlayer distances) in addition to differences in vertical aerosol concentration profiles due to either surface type (e.g., land or ocean) or time of day. Significant BB layer stratification occurred, especially over ocean versus land, with the majority of layers in the free troposphere and within 100 m of the boundary layer top. Heating rate profiles demonstrated the combined effect of cloud and BB layers and their mutual interactions, with enhanced heating in BB layers with clouds present underneath. Aerosol size distribution data are summarized below and above the boundary layer, with a notable finding being enhanced concentrations of supermicrometer particles in BB conditions. A plume aging case study revealed the dominance of organics in the free troposphere, with secondary production of inorganic and organic species and coagulation as a function of distance from fire source up to 450 km. Rather than higher horizontal and vertical resolution, a new smoke injection height method was the source of improved agreement for the vertical distribution of BB aerosol in the Navy Aerosol Analysis and Prediction System model when compared to airborne data.

Item Type:Article
Related URLs:
URLURL TypeDescription ItemData
Hossein Mardi, Ali0000-0002-8303-274X
Dadashazar, Hossein0000-0001-7054-4933
MacDonald, Alexander B.0000-0002-7238-3341
Braun, Rachel A.0000-0002-9353-9923
Crosbie, Ewan0000-0002-8895-8066
Xian, Peng0000-0001-7602-0524
Thorsen, Tyler J.0000-0002-4405-3572
Coggon, Matthew M.0000-0002-5763-1925
Fenn, Marta A.0000-0001-6088-6200
Ferrare, Richard A.0000-0002-1005-9730
Hair, Johnathan W.0000-0002-9672-1237
Woods, Roy K.0000-0002-3632-6374
Jonsson, Haflidi H.0000-0003-3043-1074
Flagan, Richard C.0000-0001-5690-770X
Seinfeld, John H.0000-0003-1344-4068
Sorooshian, Armin0000-0002-2243-2264
Additional Information:© 2018. American Geophysical Union. Received 7 JUN 2018. Accepted 26 OCT 2018. Accepted article online 31 OCT 2018. Published online 5 DEC 2018. All data used in this work can be found on the Figshare database (Sorooshian et al., 2017;‐Year_Data_Set_on_Aerosol‐Cloud‐Precipitation‐Meteorology_Interactions_for_Marine_Stratocumulus_Clouds/5099983). This work was funded by Office of Naval Research grants N00014‐10‐1‐0811, N00014‐11‐1‐0783, N00014‐10‐1‐0200, N00014‐04‐1‐0118, and N00014‐16‐1‐2567, and NASA grant NNX14AP75G.
Funding AgencyGrant Number
Office of Naval Research (ONR)N00014‐10‐1‐0811
Office of Naval Research (ONR)N00014‐11‐1‐0783
Office of Naval Research (ONR)N00014‐10‐1‐0200
Office of Naval Research (ONR)N00014‐04‐1‐0118
Office of Naval Research (ONR)N00014‐16‐1‐2567
Subject Keywords:biomass burning; aerosol; injection height; stratocumulus clouds; Soberanes Fire; California
Issue or Number:23
Record Number:CaltechAUTHORS:20190201-111654431
Persistent URL:
Official Citation:Mardi, A. H., Dadashazar, H., MacDonald, A. B., Braun, R. A., Crosbie, E., Xian, P., et al. (2018). Biomass burning plumes in the vicinity of the California coast: Airborne characterization of physicochemical properties, heating rates, and spatiotemporal features. Journal of Geophysical Research: Atmospheres, 123, 13,560–13,582.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92566
Deposited By: George Porter
Deposited On:01 Feb 2019 20:59
Last Modified:16 Nov 2021 03:51

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