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Analysis of properties of the 19 February 2018 volcanic eruption of Mount Sinabung in S5P/TROPOMI and Himawari satellite data

de Laat, Adrianus und Vazquez-Navarro, Margarita und Theys, Nicolas und Stammes, Piet (2020) Analysis of properties of the 19 February 2018 volcanic eruption of Mount Sinabung in S5P/TROPOMI and Himawari satellite data. Natural Hazards and Earth System Sciences, 20, Seiten 1203-1217. Copernicus Publications. doi: 10.5194/nhess-20-1203-2020. ISSN 1561-8633.

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Offizielle URL: https://www.nat-hazards-earth-syst-sci.net/20/1203/2020/

Kurzfassung

This study presents an analysis of TROPOMI cloud heights as a proxy for volcanic plume heights in the presence of absorbing aerosols and sulfur dioxide for the 19 February 2018 eruption plume of the Sinabung volcano on Sumatra, Indonesia. Comparison with CALIPSO satellite data shows that all three TROPOMI cloud height data products based on oxygen absorption which are considered here (FRESCO, ROCINN, O22CLD) provide volcanic ash cloud heights comparable to heights measured by CALIPSO for optically thick volcanic ash clouds. FRESCO and ROCINN heights are very similar, with the only differences for FRESCO cloud top heights above 14 km altitude. O22CLD cloud top heights unsurprisingly fall below those of FRESCO and ROCINN, as the O22CLD retrieval is less sensitive to cloud top heights above 10 km altitude. For optically thin volcanic ash clouds, i.e., when Earth's surface or clouds at lower altitudes shine through the volcanic ash cloud, retrieved heights fall below the volcanic ash cloud heights derived from CALIPSO data. Evaluation of corresponding Himawari-8 geostationary infrared (IR) brightness temperature differences ($\Delta$BTs) - a signature for detection of volcanic ash clouds in geostationary satellite data and widely used as input for quantitative volcanic ash cloud retrievals - reveals that for this particular eruption the $\Delta$BT volcanic ash signature changes to a $\Delta$BT ice crystal signature for the part of the ash plume reaching the upper troposphere beyond 10 km altitude several hours after the start of the eruption and which TROPOMI clearly characterizes as volcanic (SO2 > 1 DU - Dobson units - and AAI > 4 - absorbing aerosol index - or, more conservatively, SO2 > 10). The presence of ice in volcanic ash clouds is known to prevent the detection of volcanic ash clouds based on broadband geostationary satellite data. TROPOMI does not suffer from this effect and can provide valuable and accurate information about volcanic ash clouds and ash top heights in cases where commonly used geostationary IR measurements of volcanic ash clouds fail.

elib-URL des Eintrags:https://elib.dlr.de/131159/
Dokumentart:Zeitschriftenbeitrag
Titel:Analysis of properties of the 19 February 2018 volcanic eruption of Mount Sinabung in S5P/TROPOMI and Himawari satellite data
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
de Laat, AdrianusKNMINICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Vazquez-Navarro, MargaritaDLR, IPANICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Theys, NicolasBIRA-IASB, BNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Stammes, PietKNMINICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:4 Mai 2020
Erschienen in:Natural Hazards and Earth System Sciences
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:20
DOI:10.5194/nhess-20-1203-2020
Seitenbereich:Seiten 1203-1217
Verlag:Copernicus Publications
ISSN:1561-8633
Status:veröffentlicht
Stichwörter:Remote sensing, volcanic ash
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Atmosphären- und Klimaforschung
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Wolkenphysik
Hinterlegt von: Bugliaro Goggia, Dr.rer.nat. Luca
Hinterlegt am:22 Nov 2019 18:09
Letzte Änderung:20 Jun 2021 15:53

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