This is achieved by delivering NEAR REAL-TIME data derived from satellite measurements regarding volcanic emissions by UV-visible (SCIAMACHY, OMI, GOME-2) and InfraRed (AIRS, IASI) instruments.
DISCLAIMER: SACS is a free service that provides SO2 notifications
in case of exceptional concentrations detected by satellite instruments.
The usage of the SACS notifications, whether or not these happen to be
"true" or "false" notifications, is entirely in the hands of the Users.
The SACS developers disclaim liability for any kind of use or misuse
of the SACS information, regardless of the application.