Show simple item record

Validation of ash optical depth and layer height retrieved from passive satellite sensors using EARLINET and airborne lidar data: the case of the Eyjafjallajökull eruption

dc.contributor.authorBalis, D.
dc.contributor.authorKoukouli, M.-E.
dc.contributor.authorSiomos, N.
dc.contributor.authorDimopoulos, S.
dc.contributor.authorMona, L.
dc.contributor.authorPappalardo, G.
dc.contributor.authorMarenco, F.
dc.contributor.authorClarisse, L.
dc.contributor.authorVentress, L.J.
dc.contributor.authorCarboni, E.
dc.contributor.authorGrainger, R.G.
dc.contributor.authorWang, P.
dc.contributor.authorTilstra, G.
dc.contributor.authorVan Der A, R.
dc.contributor.authorTheys, N.
dc.contributor.authorZehner, C.
dc.date2016
dc.date.accessioned2016-06-06T09:49:58Z
dc.date.available2016-06-06T09:49:58Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/4037
dc.descriptionThe vulnerability of the European airspace to volcanic eruptions was brought to the attention of the public and the scientific community by the 2010 eruptions of the Icelandic volcano Eyjafjallajökull. As a consequence of this event, ash concentration thresholds replaced the ĝ zero tolerance to ashĝ€ rule, drastically changing the requirements on satellite ash retrievals. In response to that, the ESA funded several projects aiming at creating an optimal end-to-end system for volcanic ash plume monitoring and prediction. Two of them, namely the SACS-2 and SMASH projects, developed and improved dedicated satellite-derived ash plume and sulfur dioxide level assessments. The validation of volcanic ash levels and height extracted from the GOME-2 and IASI instruments on board the MetOp-A satellite is presented in this work. EARLINET lidar measurements are compared to different satellite retrievals for two eruptive episodes in April and May 2010. Comparisons were also made between satellite retrievals and aircraft lidar data obtained with the UK's BAe-146-301 Atmospheric Research Aircraft (managed by the Facility for Airborne Atmospheric Measurements, FAAM) over the United Kingdom and the surrounding regions. The validation results are promising for most satellite products and are within the estimated uncertainties of each of the comparative data sets, but more collocation scenes would be desirable to perform a comprehensive statistical analysis. The satellite estimates and the validation data sets are better correlated for high ash optical depth values, with correlation coefficients greater than 0.8. The IASI retrievals show a better agreement concerning the ash optical depth and ash layer height when compared with the ground-based and airborne lidar data. © Author(s) 2016. CC Attribution 3.0 License.
dc.languageeng
dc.titleValidation of ash optical depth and layer height retrieved from passive satellite sensors using EARLINET and airborne lidar data: the case of the Eyjafjallajökull eruption
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.source.titleAtmospheric Chemistry and Physics
dc.source.volume16
dc.source.issue9
dc.source.page5705-5720
Orfeo.peerreviewedYes
dc.identifier.doi10.5194/acp-16-5705-2016
dc.identifier.scopus2-s2.0-84969752471


Files in this item

Thumbnail
Name:
Balis(2016).pdf
Size:
4.395Mb
Format:
PDF
View/Open

This item appears in the following Collection(s)

Show simple item record