*********************************************************** From: Simon Carn <scarn@xxxxxxxx> *********************************************************** The August 7-8 eruption of Kasatochi volcano (Aleutian Islands) produced a very large stratospheric SO2 cloud - possibly the largest since the August 1991 eruption of Hudson (Chile). Preliminary SO2 mass calculations using Ozone Monitoring Instrument (OMI) data suggest a total SO2 burden of ~1.5 Tg. This figure will be revised in the coming weeks but is more likely to go up than down. The SO2 cloud has drifted over a large area of North America and is now (August 14) reaching Europe. This is also a request to anyone with ground-based instrumentation (DOAS, FTIR, lidar etc.) who may be able to make observations of this cloud. The location of the SO2 can be tracked using these near-real time SO2 websites: http://satepsanone.nesdis.noaa.gov/pub/OMI/OMISO2/index.html http://www.oma.be/BIRA-IASB/Molecules/SO2nrt/vs/orbit.php If anyone needs any more localized maps of the SO2 plume, please let me know. Best regards, Simon ============================================================== To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxxx To contribute to the volcano list, send your message to: volcano@xxxxxxxx Please do not send attachments. ==============================================================
