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Biomass burning session

Guergana Guerova

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The 3rd GEOS–Chem Users' Meeting

April 11–13, 2007 @ Harvard University

Simulations of the 2002-2003

bush fire season in Australia

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Bush fire season November 2002 - January 2003

Guerova 2  

      • 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

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Dust storm Griffith NSW Australia: 12 November 2002

Guerova 3  

Photo: Denis Couch

Front brings dust from the west

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GEOS-Chem CO column

2001/2002 2002/2003 2003/2004

 Guerova 4  

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November

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December

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January

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GEOS-Chem AOD 550 nm

2001/2002 2002/2003 2003/2004

 Guerova 5  

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November

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December

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January

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FTIR correlation AOD/CO, AOD/NH3

Guerova 7  

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AOD / CO

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AOD / NH3

C. Murphy, University of Wollongong

AOD

NH3

Regression equation:

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CO=[(1.6±0.1)AOD + (2.1±0.1)] x1018

AOD

CO

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GEOS-Chem correlation AOD/CO, AOD/NH3

Guerova 8  

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AOD / CO

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AOD / NH3

AOD

NH3

AOD

CO

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MODIS AOD: 26 January 2003

Guerova   10

C. Murphy, University of Wollongong

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GEOS-Chem 26 January 2003

Guerova 8  

GEOS-Chem AOD GEOS-Chem CO

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Conclusions

 Guerova   11

  • 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

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International ARCNESS Winter School

“Atmospheric composition observation and modeling”

University of Wollongong

Wollongong, Australia

13 - 17 August 2007

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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.

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Scope of the winter school

The topics covered include:

* Overview of atmospheric composition modeling

* Observations from ground and space

* Applications: bush fires, heat waves, dust storm

The 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

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Costs

The 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.

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