 |
| Titel |
Support for Aviation for Volcanic Ash Avoidance: SAVAA |
| VerfasserIn |
S. Eckhardt, A. J. Prata, A. Stohl, A. Richter, F. Buongiorno, P. Seibert, C. Zehner |
| Konferenz |
EGU General Assembly 2009
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250028734
|
|
|
|
|
|
| Zusammenfassung |
| A new ESA project is described that is aimed at delivering earth observation (EO) data
products as a service to the aviation industry for the avoidance of hazardous volcanic ash and
SO2 clouds. Recognizing some of the more urgent needs of the Volcanic Ash Advisory
Centres (VAACs) the project will provide a series of standard EO products based on existing
algorithms and also extend these using new algorithms that have been peer reviewed
and tested. The proposed algorithms use both ultra-violet and infrared radiation,
thus providing uninterrupted 24 hour volcanic cloud surveillance, and addressing
the need for nighttime hazards monitoring. We propose the use of ash and SO2
products derived from the geosynchronous SEVIRI sensor–with a capability of
delivering data at a peak temporal resolution of 15 min, thus addressing the need for
timeliness. We will use two classes of algorithm: Identify and Discriminate and
Quantify and Retrieve. The first class is aimed at fast delivery of map products from
multiple sources of satellite data, specifically for the use by VAACs for guidance
in defining the airspace affected by the volcanic hazard, while the second class
provides quantitative information (e.g. ash concentrations and SO2 abundances)
that can be used with an inverse model and an atmospheric dispersion model to
objectively predict the subsequent movement of the hazardous volcanic cloud. These
products, algorithms and retrieval schemes will be delivered through a webportal and a
demonstration system (Volcanic Ash and SO2 Support Service—VAS3) using the Eumetcast
system to ingest multiple sources of satellite data with a state-of-the-art volcanic ash
and gas dispersion model coupled to a transport and inverse modelling scheme
(FLEXVOL) to provide objective forecasts of volcanic ash and SO2 movement. The system
includes the capability to link with and utilise products from existing services (e.g.
SACS) and therefore reduces duplication while providing a cost effective use of
resources. VAS3 is unique in its ability to provide a single set of volcanic ash and SO2
products and predictions in a standardised form specifically for aviation hazards. |
|
|
|
|
|
|