14) { $gdate = $gdate2; } if($ghr < 3) { $gdate = "$yester"."12"; } echo "\"Latest"; echo "\"Latest"; echo "\"Latest"; echo "\"Latest"; echo "\"Latest"; echo "\"Latest"; } ?> Global Sulfur Dioxide Monitoring Home Page "; echo ""; } ?>
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Global Sulfur Dioxide Monitoring Home Page


Each week, Smithsonian's Global Volcanism Program publishes a report of new volcanic activity.

The SO2 data collected by AURA/OMI and Suomi NPP/OMPS for the new activity this week are shown below.


Week of 30 Jul - 05 Aug 2025


Andaman Islands - Barren Island: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Afar - Erta Ale: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Central_America - Poas: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Colombia - Ruiz: OMI   NPP-OMPS   TROPOMI   N20-OMPS
DRCongo - Nyamulagira & Nyiragongo: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Halmahera - Dukono & Ibu: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Iceland - Reykjanes: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Indonesia - Lewotobi & Lewotolok: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Italy - Etna: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Japan - Suwanosejima & Kishima: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Java - Raung & Semeru: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Kamchatka - Klyuchevsky, Krasheninnikov, Mutnovsky & Sheveluch: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Mexico - El Chichon & Popocatepetl: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Northern Chile - Lascar: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Papau New Guinea - Bagana & Manam: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Philippine Islands - Kanlaon & Mayon: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Sumatra - Marapi: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Vanuatu - Aoba & Yasur: OMI   NPP-OMPS   TROPOMI   N20-OMPS

Summary of Preliminary Tonnage estimates