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snippet: Sulfur Dioxide Index (VIIRS) for the Hunga Tonga Eruption January 2022
summary: Sulfur Dioxide Index (VIIRS) for the Hunga Tonga Eruption January 2022
accessInformation: NASA DRL
thumbnail:
maxScale: 2311162.217155
typeKeywords: ["Data","Service","Image Service","ArcGIS Server"]
description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN STYLE="font-weight:bold;">Date of Images: </SPAN></P><P><SPAN>1/14/2022 - 1/24/2022</SPAN></P><P><SPAN STYLE="font-weight:bold;">Date of Next Image:</SPAN></P><P><SPAN>Unknown</SPAN></P><P><SPAN STYLE="font-weight:bold;">Summary:</SPAN></P><P><SPAN>The eruption of Hunga Tonga on January 15th was one of the largest eruptions in the last 30 years pushing ash and aerosols high into the atmosphere. Utilizing the VIIRS sensor on Suomi-NPP and JPSS, NASA scientists can measure the sulfur dioxide (SO2) concentration from the eruption. SO2 is often used as a proxy for the location of volcanic ash. High concentrations of SO2 can also be hazardous to human health and air travel.</SPAN></P><P><SPAN STYLE="font-weight:bold;">Suggested Use:</SPAN></P><P><SPAN>Blue/green to red/yellow colors indicate higher sulfur dioxide (SO2) concentrations</SPAN></P><P><SPAN STYLE="font-weight:bold;">Satellite/Sensor:</SPAN></P><P><SPAN>Suomi-NPP and JPSS1 Visible Infrared Imaging Radiometer Suite (VIIRS)</SPAN></P><P><SPAN STYLE="font-weight:bold;">Resolution:</SPAN></P><P><SPAN>750 meters</SPAN></P><P><SPAN STYLE="font-weight:bold;">Credits:</SPAN></P><P><SPAN>NASA's Direct Readout Laboratory (DRL)</SPAN></P><P><SPAN STYLE="font-weight:bold;">Esri REST Endpoint:</SPAN></P><P><SPAN>See URL Section on right side of page</SPAN></P><P><SPAN STYLE="font-weight:bold;">WMS Endpoint</SPAN></P><P><A href="https://maps.disasters.nasa.gov:443/ags04/services/tonga_volcano_tsunami_202201/viirs_so2/ImageServer/WMSServer" STYLE="text-decoration:underline;"><SPAN>https://maps.disasters.nasa.gov/ags04/services/tonga_volcano_tsunami_202201/viirs_so2/ImageServer/WMSServer</SPAN></A></P><P><SPAN STYLE="font-weight:bold;">Data Download:</SPAN></P><P><A href="https://maps.disasters.nasa.gov:443/download/gis_products/event_specific/2022/tonga_volcano_tsunami_202201/viirs/" STYLE="text-decoration:underline;"><SPAN>https://maps.disasters.nasa.gov/download/gis_products/event_specific/2022/tonga_volcano_tsunami_202201/viirs/</SPAN></A></P></DIV></DIV></DIV>
licenseInfo: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>NASA data and products are freely available to federal, state, public, non-profit and commercial users. This information can be experimental- or research-grade data products and may not be appropriate for operational use. These NASA data products, services, and the Disasters Mapping Portal are intended to aid decision makers and enhance situational awareness, but these data are not guaranteed to be consistently available or routinely updated. Please cite the information according to the direction provided in the metadata.</SPAN></P><P><SPAN /></P><P><SPAN /></P><P><SPAN /></P><P><SPAN /></P></DIV></DIV></DIV>
catalogPath:
title: Sulfur Dioxide Index (VIIRS) for the Hunga Tonga Eruption January 2022
type: Image Service
url: https://maps.disasters.nasa.gov/ags04
tags: ["NASA","NASA Disasters Program","Tonga","Volcano","VIIRS","Sulfur Dioxide","Hunga Tonga","SO2"]
culture: en-US
name: viirs_so2
guid:
minScale: 1.47914381897889E8
spatialReference: WGS_1984_Web_Mercator_Auxiliary_Sphere