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| Titel |
Satellite- and ground-based CO total column observations over 2010 Russian fires: accuracy of top-down estimates based on thermal IR satellite data |
| VerfasserIn |
L. N. Yurganov, V. Rakitin, A. Dzhola, T. August, E. Fokeeva, M. George, G. Gorchakov, E. Grechko, S. Hannon, A. Karpov, L. Ott, E. Semutnikova, R. Shumsky, L. Strow |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 11, no. 15 ; Nr. 11, no. 15 (2011-08-04), S.7925-7942 |
| Datensatznummer |
250009983
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| Publikation (Nr.) |
 copernicus.org/acp-11-7925-2011.pdf |
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| Zusammenfassung |
| CO total column data are presented from three space sounders and two
ground-based spectrometers in Moscow and its suburbs during the forest and
peat fires that occurred in Central Russia in July–August 2010. Also
presented are ground-based in situ CO measurements. The Moscow area was
strongly impacted by the CO plume from these fires. Concurrent satellite-
and ground-based observations were used to quantify the errors of CO
top-down emission estimates. On certain days, CO total columns retrieved
from the data of the space-based sounders were 2–3 times less than those
obtained from the ground-based sun-tracking spectrometers. The depth of the
polluted layer over Moscow was estimated using total column measurements
compared with CO volume mixing ratios in the surface layer and on the TV
tower and found to be around 360 m. The missing CO that is the average
difference between the CO total column accurately determined by the ground
spectrometers and that retrieved by AIRS, MOPITT, and IASI was determined
for the Moscow area between 1.6 and 3.3 × 1018 molec cm−2. These values
were extrapolated onto the entire plume; subsequently, the CO burden (total
mass) over Russia during the fire event was corrected. A top-down estimate
of the total emitted CO, obtained by a simple mass balance model increased
by 40–100 % for different sensors due to this correction. Final
assessments of total CO emitted by Russian wildfires obtained from different
sounders are between 34 and 40 Tg CO during July–August 2010. |
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