Biomass burning session
Guergana Guerova
The 3rd GEOS–Chem Users' MeetingApril 11–13, 2007 @ Harvard University
Simulations of the 2002-2003bush fire season in Australia
Bush fire season November 2002 - January 2003
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Motivation:
worst drought in a century in Australia
2003 a record year for wildfires
January 260 000 hectares burnt
20 500 people displaced
millions $ in public and private properties
Distinctive properties of Australian aerosols:
spinifex smoke: high in black carbon
dust: high in hematite
australian dust and smoke more absorbing
increased atmospheric heating
Dust storm Griffith NSW Australia: 12 November 2002
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Photo: Denis CouchFront brings dust from the west
GEOS-Chem CO column 2001/2002 2002/2003 2003/2004
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November
December
January
GEOS-Chem AOD 550 nm 2001/2002 2002/2003 2003/2004
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November
December
January
.
FTIR correlation AOD/CO, AOD/NH3
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AOD / CO
AOD / NH3
C. Murphy, University of WollongongAOD
NH3Regression equation:
CO=[(1.6±0.1)AOD + (2.1±0.1)] x1018
AOD
CO
AOD/CO R
11 2001 0.99
11 2002 0.96
01 2003 0.98
AOD/NH3 R
01 2003 0.96
GEOS-Chem correlation AOD/CO, AOD/NH3
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AOD / CO
AOD / NH3
AOD
NH3
AOD
CO
AOD/CO R
11 2001 0.84
11 2002 0.75
01 2003 0.96
AOD/NH3 R
01 2003 0.2
MODIS AOD: 26 January 2003
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C. Murphy, University of Wollongong
GEOS-Chem 26 January 2003
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GEOS-Chem AOD GEOS-Chem CO
Conclusions
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AOD/ CO and AOD/ NH3 correlate in bush fires in January 2003
FTIR correlation ~ 0.95 for both AOD/CO and AOD/NH3
GEOS-Chem AOD/CO correlation ~0.95 in January 2003 only
MODIS AOD can be translated into trace gas column
vertical concentration known infer surface concentration
Working plan 2007-2008
inverse modeling using MODIS AOD
use MODIS AOD to convert to trace gas columns
long range transport over the Tasman Sea
real-time GEOS-Chem during the sugarcane campaign 11/2007
International ARCNESS Winter School
“Atmospheric composition observation and modeling”
University of Wollongong
Wollongong, Australia
13 - 17 August 2007
We have pleasure in inviting you to the International ARCNESS Winter School: Atmospheric composition observation and modeling, to be held at the University of Wollongong, Wollongong Australia, in the week of 13 – 17 August 2007.
Scope of the winter schoolThe topics covered include: * Overview of atmospheric composition modeling * Observations from ground and space * Applications: bush fires, heat waves, dust stormThe Winter School invites young researcher with interests in the field of tropospheric composition. The courses cover a broad spectrum of observation methods and state of art modeling of tropospheric chemistry and transport on global and regional scales. Each topic includes keynote plenary lectures with discussion. All Winter School participants are asked to present a poster of their research. There will be ample opportunity for discussion. An excursion may be organized depending on interest. A detailed program is available from: http://www.uow.edu.au/conferences/ARCNESS 2007/home.html
CostsThe fee is AU$ 300 (full registration) and AU$ 200 (student registration) and includes conference registration, lunch, dinner and poster session nibbles. A small number of scholarships will be available.