 |
| Titel |
Long-Term Radiometric Performance of the SCIAMACHY Quartz Tungsten Halogen Lamp |
| VerfasserIn |
S. Noël, K. Bramstedt, H. Bovensmann, J. P. Burrows, M. Gottwald, E. Krieg |
| Konferenz |
EGU General Assembly 2009
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250023469
|
|
|
|
|
|
| Zusammenfassung |
| The SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY
(SCIAMACHY) is part of the atmospheric chemistry payload of ESAś Environmental
Satellite ENVISAT. Since 2002, SCIAMACHY provides the amount and global distribution
of various atmospheric constituents relevant in the contexts of ozone chemistry, air pollution
and climate change. Originally designed for a 5-year mission, the SCIAMACHY instrument
is still working well and ready for the planned mission extension until 2010 or even
further.
Calibration and monitoring of the instrument performance are a pre-requisite for a
continuously high data product quality. Here, results from the monitoring of the
optical performance of the SCIAMACHY instrument are presented. Emphasis is
placed on the investigation of the performance of the SCIAMACHY internal Quartz
Tungsten Halogen (QTH) lamp. This type of lamp has been used for monitoring
the radiometric performance of an UV-VIS-SWIR Earth observation sensor over
mission lifetime for the first time. The analysis of regular in-flight measurements has
shown the radiometric stability of the SCIAMACHY QTH lamp over time especially
in the visible/NIR spectral range. Lamps of this type are therefore considered as
useful components for further space-borne spectroscopic missions, as they provide a
relatively cheap and reliable mean for (at least relative) radiometric calibration and
monitoring. |
|
|
|
|
|
|