Trajectory matching and dispersion modeling of volcanic plumes utilising space-based observations

Within the projects SACS (Support to Aviation Control Service) and Exupéry (the mobile volcano fast response system, VFRS) SO2 total columns are retrieved from different space-borne instruments such as GOME-2, SCIAMACHY and OMI. The backward trajectory matching technique is applied to relate exceptional SO2 values to particular sources and volcanic regions. Additionally, the moment of the eruption as well as the emission and the plume height can be estimated. Dispersion modeling is applied to forecast the motion of the plume and to estimate the SO2 emissions

Monitoring volcanic SO2 emissions using the GOME-2 satellite instrument

Volcanic SO2 plumes are monitored with the GOME-2 satellite instrument. The SO2 columns are determined using Differential Optical Absorption Spectroscopy (DOAS)

Monitoring volcanic SO2 plumes using the GOME-2 satellite instrument

Volcanic sulfur dioxide is an important indicator for volcanic activity. With GOME-2 it is possible to monitor volcanic emissions on a global scale and daily basis. The SO2 is retrieved using Differential Optical Absorption Spectroscopy (DOAS). To attribute the detected SO2 to a particular volcano and to estimate the height of the eruption plume trajectory matching is applied. The development of the eruption plume is predicted using a dispersion model

Monitoring of volcanic SO2 emissions using the GOME-2 satellite instrument

Atmospheric sulfur dioxide is an important indicator of volcanic activity. Space based atmospheric sensors like GOME-2 on MetOp and OMI on EOS-Aura make it possible to detect the emissions of volcanic SO2 and monitor volcanic activity and eruptions on a global scale. With GOME-2, it is possible to detect and track volcanic eruption plumes and SO2 from passive degassing in near-real time (NRT). This is particularly important for early warning services, as increases in SO2 fluxes are an indicator for new episodes of volcanic unrest. The SO2 daily measurements from space are used for several early warning services related volcanic risk (Exupéry, GlobVolcano) and for aviation warning purposes (GSE-PROMOTE)