HR: 1340h
AN: A13D-1513    [Abstracts]
TI: Interannual variations of carbon monoxide global burden measured by MOPITT and AIRS; assessments of total carbon emitted by wild fires.
AU: * Yurganov, L
EM: Yurganov@umbc.edu
AF: JCET/UMBC, 1000 Hilltop Cr, Baltimore, MD 21250, United States
AU: McMillan, W
EM: McMillan@umbc.edu
AF: JCET/UMBC, 1000 Hilltop Cr, Baltimore, MD 21250, United States
AU: Dzhola, A
EM: dzhola@yandex.ru
AF: Institute of Atmospheric Physics, Pyzhevsky 3, Moscow, 109017, Russian Federation
AU: Grechko, E
EM: eigrechko@gmail.ru
AF: Institute of Atmospheric Physics, Pyzhevsky 3, Moscow, 109017, Russian Federation
AU: Jones, N
EM: njones@uow.edu.au
AF: University of Wollongong, NSW, Wollongong, 2522, Australia
AU: van der Werf, G
EM: guido.van.der.Werf@falw.vu.nl
AF: Vrije Universiteit, De Boelelaan 1085, Amsterdam, 1081, Netherlands
AU: Wennberg, P
EM: wennberg@gps.caltech.edu
AF: California Institute of Technology, MC 150-21, Pasadena, CA 91125, United States
AU: Evans, K
EM: evans@umbc.edu
AF: JCET/UMBC, 1000 Hilltop Cr, Baltimore, MD 21250, United States
AB: Biomass burning is one of the most unstable sources of carbon for the atmosphere. Variations of carbon monoxide global burden (total tropospheric mass) can be used as a proxy for total carbon emitted by wild fires. This report presents new results of CO global total column measurements using the Atmospheric InfraRed Sounder (AIRS), a space-borne spectrometer aboard the Aqua satellite in combination with data from the Measurements of Pollution in the Troposphere (MOPITT) sensor aboard the Terra satellite. Both data sets were validated using ground-based spectrometric total column measurements in Russia and Australia and compared to the Tropospheric Emission Spectrometer (TES) retrievals. Anomalies of global CO emissions were estimated using a simple one-box model and compared to the Global Fire Emission Database (GFED), version 2. A positive trend of CO global emissions for the second half of the year between 2000 and 2006 was found while no visible trend for the first half of the year was noticed. CO annual emission in 2006 was 184 Tg higher that that in 2000- 2001. Total carbon contribution from biomass burning during the most intense fires, occurred in 1997-1998 (GFED) and 2006 was estimated as high as (0.6 - 1 ) Pg C per year larger than in 2000. This is comparable with the modern estimate of the global continental carbon net sink -0.9 Pg C per year. So, wild fires are able to convert global continental areas from a sink to a weak source of CO2.
DE: 0365 Troposphere: composition and chemistry
DE: 0426 Biosphere/atmosphere interactions (0315)
DE: 0428 Carbon cycling (4806)
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting