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The effects of the Syrian civil war on atmospheric ammonia as seen from IASI

Abstract : The Syrian civil war started a decade ago, in March 2011, causing dramatic social, political, economic and environmental consequences over the whole area of Syria and nearby countries. Agriculture in particular suffered massively, which affected the economy directly since the agricultural sector makes up to 26% of the gross domestic product (GDP) of the country. Several studies used satellite-retrieved data and imagery to examine the spatio-temporal changes in the region, for the period of the conflict. In this study we investigate the impacts of the Syrian civil war on atmospheric ammonia (NH?) emitted from industrial and agricultural activities during the 2008-2019 period. Our analyses are based on the NH? measurements from the IASI instruments on board the Metop satellites. Firstly, land-use changes and decrease of agriculture-emitted ammonia are explored over the country, and especially in the north- eastern part of Syria that has suffered from the conflict that included ISIS and Kurdish fighters. We also investigate the changes in atmospheric NH? at an ammonia production plant, which activities have been suspended due to several conflict-related events. We show that the NH? columns retrieved from IASI are directly affected by the war, and that periods of intense conflict and siege are reflected in lower NH? concentrations, which are not driven by meteorology. The interpretation of the identified changes in atmospheric NH? are supported by different datasets: NO? columns from GOME-2, satellite imagery, and MODIS land cover type, reanalysis data from ECMWF (ERA5) to look at meteorological factors that may affect atmospheric ammonia concentrations, as well as the burned area from the Aqua/Terra combined MODIS product to check for fires.
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https://hal-insu.archives-ouvertes.fr/insu-03647770
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Submitted on : Wednesday, April 20, 2022 - 8:33:34 PM
Last modification on : Thursday, April 21, 2022 - 3:39:04 AM

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  • HAL Id : insu-03647770, version 1

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Rimal Abeed, Sarah Safieddine, Lieven Clarisse, Martin van Damme, Pierre-François Coheur, et al.. The effects of the Syrian civil war on atmospheric ammonia as seen from IASI. EUMETSAT, Meteorological Satellite Conference 2021, Sep 2021, Online, Unknown Region. ⟨insu-03647770⟩

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