elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Global monitoring of volcanic SO2 degassing with unprecedented resolution from TROPOMI onboard Sentinel-5 Precursor

Theys, Nicolas and Hedelt, Pascal and De Smedt, Isabelle and Lerot, Christophe and Yu, Huan and Vlietinck, Jonas and Pedergnana, Mattia and Arellano, Santiago and Galle, B. and Fernandez, D. and Carlito, C.J.M. and Barrington, C. and Taisne, B. and Delgado-Granados, H. and Loyola, Diego and Van Roozendael, Michel (2019) Global monitoring of volcanic SO2 degassing with unprecedented resolution from TROPOMI onboard Sentinel-5 Precursor. Scientific Reports, 9 (2643), pp. 1-10. Nature Publishing Group. DOI: 10.1038/s41598-019-39279-y ISSN 2045-2322

[img] PDF - Published version
2MB

Official URL: https://www.nature.com/articles/s41598-019-39279-y

Abstract

Over the last four decades, space-based nadir observations of sulfur dioxide (SO2) proved to be a key data source for assessing the environmental impacts of volcanic emissions, for monitoring volcanic activity and early signs of eruptions, and ultimately mitigating related hazards on local populations and aviation. Despite its importance, a detailed picture of global SO2 daily degassing is difficult to produce, notably for lower-tropospheric plumes, due largely to the limited spatial resolution and coverage or lack of sensitivity and selectivity to SO2 of current (and previous) nadir sensors. We report here the first volcanic SO2 measurements from the hyperspectral TROPOspheric Monitoring Instrument (TROPOMI) launched in October 2017 onboard the ESA's Sentinel-5 Precursor platform. Using the operational processing algorithm, we explore the benefit of improved spatial resolution to the monitoring of global volcanic degassing. We find that TROPOMI surpasses any space nadir sensor in its ability to detect weak degassing signals and captures day-to-day changes in SO2 emissions. The detection limit of TROPOMI to SO2 emissions is a factor of 4 better than the heritage Aura/Ozone Monitoring Instrument (OMI). Here we show that TROPOMI SO2 daily observations carry a wealth of information on volcanic activity. Provided with adequate wind speed data, temporally resolved SO2 fluxes can be obtained at hourly time steps or shorter. We anticipate that TROPOMI SO2 data will help to monitor global volcanic daily degassing and better understand volcanic processes and impacts.

Item URL in elib:https://elib.dlr.de/126652/
Document Type:Article
Title:Global monitoring of volcanic SO2 degassing with unprecedented resolution from TROPOMI onboard Sentinel-5 Precursor
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Theys, NicolasBelgian Institute for Space AeronomyUNSPECIFIED
Hedelt, PascalPascal.Hedelt (at) dlr.dehttps://orcid.org/0000-0002-1752-0040
De Smedt, IsabelleBIRA/IASBUNSPECIFIED
Lerot, ChristopheBIRA-IASBUNSPECIFIED
Yu, HuanBIRA-IASBUNSPECIFIED
Vlietinck, JonasBelgian Institute for Space AeronomyUNSPECIFIED
Pedergnana, MattiaMattia.Pedergnana (at) dlr.deUNSPECIFIED
Arellano, SantiagoDepartment of Space, Earth and Environment, Chalmers University of Technology, Gothenburg, SwedenUNSPECIFIED
Galle, B.Department of Space, Earth and Environment, Chalmers University of Technology, Gothenburg, SwedenUNSPECIFIED
Fernandez, D.Philippine Institute of Volcanology and Seismology (PHIVOLCS), Quezon City, PhilippinesUNSPECIFIED
Carlito, C.J.M.Philippine Institute of Volcanology and Seismology (PHIVOLCS), Quezon City, PhilippinesUNSPECIFIED
Barrington, C.Asian School of the Environment, Nanyang Technological University, Singapore, SingaporeUNSPECIFIED
Taisne, B.Asian School of the Environment, Nanyang Technological University, Singapore, SingaporeUNSPECIFIED
Delgado-Granados, H.Instituto de Geofísica, Universidad Nacional Autónoma de México (UNAM), Mexico City, MexicoUNSPECIFIED
Loyola, DiegoDiego.Loyola (at) dlr.dehttps://orcid.org/0000-0002-8547-9350
Van Roozendael, MichelBIRA-IASBUNSPECIFIED
Date:25 February 2019
Journal or Publication Title:Scientific Reports
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:9
DOI :10.1038/s41598-019-39279-y
Page Range:pp. 1-10
Publisher:Nature Publishing Group
ISSN:2045-2322
Status:Published
Keywords:TROPOMI, SO2, Volcanoes, Sentinel-5 Precursor
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):Vorhaben Spectroscopic Methods in Remote Sensing, R - Vorhaben Atmosphären- und Klimaforschung, R - Remote sensing and geoscience
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Hedelt, Pascal
Deposited On:26 Feb 2019 10:10
Last Modified:26 Feb 2019 10:10

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.