How much CO was emitted by the 2010 fires around Moscow?
Article, Other literature type
Hajj, El, M.
- Publisher: European Geosciences Union
(issn: 1680-7324, eissn: 1680-7324)
Science & Technology, Physical Sciences, Meteorology & Atmospheric Sciences, RUSSIAN WILDFIRES, EMISSIONS, POLLUTION, SUMMER, IASI, ASSIMILATION, RETRIEVAL, SATELLITE, ALGORITHM, TRANSPORT | [ PHYS.PHYS.PHYS-AO-PH ] Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] | [ SDE.MCG ] Environmental Sciences/Global Changes
The fires around Moscow in July and August 2010 emitted a large amount of pollutants
to the atmosphere. Here we estimate the carbon monoxide (CO) source
strength of the Moscow fires in July and August by using the
TM5-4DVAR system in combination with CO column observations of the
Infrared Atmospheric Sounding Interferometer (IASI). It is shown
that the IASI observations provide a strong constraint on the total
emissions needed in the model. Irrespective of the prior emissions
used, the optimised CO fire emission estimates from mid-July to
mid-August 2010 amount to approximately 24 Tg CO. This
estimate depends only weakly (< 15%) on the assumed diurnal variations and
injection height of the emissions. However, the estimated emissions might depend on
unaccounted model uncertainties such as vertical transport.
Our emission estimate of
22–27 Tg CO during roughly one month of intense burning is
less than suggested by another recent study, but substantially
larger than predicted by the bottom-up inventories. This latter
discrepancy suggests that bottom-up emission estimates for extreme
peat burning events require improvements.