globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2015JD024343
Simulating the Black Saturday 2009 smoke plume with an interactive composition-climate model: Sensitivity to emissions amount, timing, and injection height
Author: Field R.D.; Luo M.; Fromm M.; Voulgarakis A.; Mangeon S.; Worden J.
Source Publication: Journal of Geophysical Research: Atmospheres
Publishing Year: 2016
Volume: 121, Issue:8
pages begin: 4296
pages end: 4316
Language: 英语
Keyword: biomass burning ; carbon monoxide ; climate model ; long-range transport ; remote sensing ; upper troposphere lower stratosphere
Scopus Keyword: anticyclone ; atmospheric plume ; atmospheric pollution ; Aura (satellite) ; biomass burning ; carbon emission ; carbon monoxide ; climate modeling ; data set ; long range transport ; microwave limb sounder ; radar ; remote sensing ; sensitivity analysis ; smoke ; stratosphere ; troposphere ; Africa ; New Zealand
English Abstract: We simulated the high-altitude smoke plume from the early February 2009 Black Saturday bushfires in southeastern Australia using the NASA Goddard Institute for Space Studies ModelE2. To the best of our knowledge, this is the first single-plume analysis of biomass burning emissions injected directly into the upper troposphere/lower stratosphere (UTLS) using a full-complexity composition-climate model. We compared simulated carbon monoxide (CO) to a new Aura Tropospheric Emission Spectrometer/Microwave Limb Sounder joint CO retrieval, focusing on the plume's initial transport eastward, anticyclonic circulation to the north of New Zealand, westward transport in the lower stratospheric easterlies, and arrival over Africa at the end of February. Our goal was to determine the sensitivity of the simulated plume to prescribed injection height, emissions amount, and emissions timing from different sources for a full-complexity model when compared to Aura. The most realistic plumes were obtained using injection heights in the UTLS, including one drawn from ground-based radar data. A 6 h emissions pulse or emissions tied to independent estimates of hourly fire behavior produced a more realistic plume in the lower stratosphere compared to the same emissions amount being released evenly over 12 or 24 h. Simulated CO in the plume was highly sensitive to the differences between emissions amounts estimated from the Global Fire Emissions Database and from detailed, ground-based estimates of fire growth. The emissions amount determined not only the CO concentration of the plume but also the proportion of the plume that entered the stratosphere. We speculate that this is due to either or both nonlinear CO loss with a weakened OH sink or plume self-lofting driven by shortwave absorption of the coemitted aerosols. ©2016. American Geophysical Union. All Rights Reserved.
Funding Project: "Research was partially supported by the Jet Propulsion Laboratory, California Institute of Technology under contract to the National Aeronautics and Space Administration (NASA). Resources supporting this work were provided by the NASA HighEnd Computing (HEC) Program through the NASA Center for Climate Simulation (NCCS) at Goddard Space Flight Center. All data in the study can be obtained by contacting the lead author
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Document Type: 期刊论文
Appears in Collections:影响、适应和脆弱性

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Affiliation: NASA Goddard Institute for Space Studies, New York, NY, United States; Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Naval Research Laboratory, Washington, DC, United States; Department of Physics, Imperial College London, London, United Kingdom

Recommended Citation:
Field R.D.,Luo M.,Fromm M.,et al. Simulating the Black Saturday 2009 smoke plume with an interactive composition-climate model: Sensitivity to emissions amount, timing, and injection height[J]. Journal of Geophysical Research: Atmospheres,2016-01-01,121(8)
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