NDLI: Sulphur mass balance and radiative forcing estimation for a moderate volcanic eruption using new sulphate aerosols retrievals based on IASI observations

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Sulphur mass balance and radiative forcing estimation for a moderate volcanic eruption using new sulphate aerosols retrievals based on IASI observations

Content Provider	Semantic Scholar
Author	Guermazi, Henda Sellitto, Pasquale Cuesta, Juan Eremenko, Maxim Lachâtre, Mathieu Mailler, Sylvain Carboni, Elisa Salerno, Giuseppe Caltabiano, Tommaso Menut, Laurent Serbaji, Mohamed Moncef Rekhiss, Farhat Legras, B.
Copyright Year	2019
Abstract	Abstract. We developed a new retrieval algorithm based on the Infrared Atmospheric Sounding Interferometer (IASI) observations, called AEROIASI-Sulphates, to measure vertically-resolved sulphate aerosols (SA) extinction and mass concentration profiles, with limited theoretical uncertainties (typically ~25 % total uncertainty for SA mass column estimations). The algorithm, based on a self-adapting Tikhonov-Phillips regularization method, is applied to a medium-sized-intensity eruption of Mount Etna volcano (18 March 2012). Comparisons with simultaneous and independent SO2 plume observations and simulations show that AEROIASI-Sulphates correctly identifies the volcanic plume morphology both horizontally and vertically. This method provided, for the first time, crucial information pieces to describe the gaseous-to-particulate volcanic sulphur mass balance (60 % of the injected sulphur mass is converted to particulate matter, after ~24 hours) and to estimate the regional shortwave direct radiative forcing (a regional forcing of −0.8 W/m2 is exerted in the eastern Mediterranean) for moderate volcanic eruptions.
Starting Page	1
Ending Page	13
Page Count	13
File Format	PDF HTM / HTML
DOI	10.5194/amt-2019-341
Alternate Webpage(s)	https://www.atmos-meas-tech-discuss.net/amt-2019-341/amt-2019-341.pdf
Alternate Webpage(s)	https://doi.org/10.5194/amt-2019-341
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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