 |
| Titel |
Observations of the 2008 Kasatochi volcanic SO2 plume by CARIBIC aircraft DOAS and the GOME-2 satellite |
| VerfasserIn |
K.-P. Heue, C. A. M. Brenninkmeijer, T. Wagner, K. Mies, B. Dix, U. Frieß, B. G. Martinsson, F. Slemr, P. F. J. Velthoven |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 10, no. 10 ; Nr. 10, no. 10 (2010-05-21), S.4699-4713 |
| Datensatznummer |
250008471
|
| Publikation (Nr.) |
 copernicus.org/acp-10-4699-2010.pdf |
|
|
|
|
|
| Zusammenfassung |
| The 2008 Kasatochi volcanic eruption emitted
≈1.5–2.5 Tg SO2 into the upper troposphere and lower
stratosphere. Parts of the main volcanic plume (gases and particles) reached
central Europe a week after the eruption and were detected there by the
CARIBIC (Civil Aircraft for Regular investigation of the Atmosphere based on
an Instrument Container) flying observatory. The plume was also observed by
the GOME-2 satellite instrument, only a few hours after the CARIBIC
aircraft had crossed the plume, thus giving a unique opportunity to compare
results. Trajectories and local wind speeds are investigated in detail using
the GOME-2 and CARIBIC observations for better comparison of the
results from these two observational systems. A comparison of the satellite spatial
pattern with the local observations of the wind speed and the trajectory
model TRAJKS showed a slight discrepancy, which has to be considered for
satellite validation. Hence, it appears that detailed analyses of wind speeds
are required. Emitted and secondary particles, partly measured and sampled by
the CARIBIC in situ instruments, affected the DOAS SO2 measurements, of
both CARIBIC and GOME-2. Overall GOME-2 and the CARIBIC SO2
measurements agree very well. The major uncertainties remain the actual wind
speed needed to properly correct for the advection of the plume between the
different overpass times and effects of aerosols on DOAS retrievals. The
good agreement can be seen as validation for both GOME-2 and CARIBIC DOAS
observations. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|