Title
On-ground Re-Calibration of the GOME-2 satellite spectrometer series
Author
Otter, G.
Dijkhuizen, N.
Vosteen, A.
Brinkers, S.
Gür, B.
Kenter, P.
Sallusti, M.
Tomuta, D.
Veratti, R.
Cappani, A.
Contributor
Armandillo, E. (editor)
Cugny, B. (editor)
Karafolas, N. (editor)
Publication year
2017
Abstract
The Global Ozone Monitoring Experiment-2[1] (GOME-2) represents one of the European instruments carried on board the MetOp satellite within the ESA’s “Living Planet Program”. Consisting of three flight models (FM’s) it is intended to provide long-term monitoring of atmospheric ozone and other trace gases over a time frame of 15-20 years, thus contributing valuable input towards climate and atmospheric research and providing near real-time data for use in air quality forecasting. The ambition to achieve highly accurate scientific results requires a thorough calibration and characterization of the instrument prior to launch. These calibration campaigns were performed by TNO in Delft in the Netherlands, in the “Thermal Vacuum Calibration Facility” of the institute. Due to refurbishment and / or storage of the instruments over a period of a few years, several re-calibration campaigns were necessary. These re-calibrations provided the unique opportunity to study the effects of long term storage and build up statistics on the instrument as well as the calibration methods used. During the re-calibration of the second flight model a difference was found in the radiometric calibration output, which was not understood initially. In order to understand the anomalies on the radiometry, a deep investigation was performed using numerous variations of the setup and different sources. The major contributor was identified to be a systematic error in the alignment, for which a correction was applied. Apart from this, it was found that the geometry of the sources influenced the results. Based on the calibration results combined with a theoretical geometrical hypothesis inferred that the on-ground calibration should mimic as close as possible the in-orbit geometry
Subject
2015 Nano Technology
SSE - Space Systems Engineering OPT - Optics
TS - Technical Sciences
Calibration
Earth observation
Radiometry
Slit-function
Air quality
Atmospheric chemistry
Climate models
Digital storage
Geometry
Orbits
Ozone
Radiometry
Satellites
Air quality forecasting
Atmospheric research
Earth observations
Global ozone monitoring experiments
Near real-time datum
On-ground calibration
Radiometric calibrations
Satellite spectrometers
Calibration
To reference this document use:
http://resolver.tudelft.nl/uuid:93a78b0e-888c-400c-b618-44d0004be714
TNO identifier
784930
Publisher
SPIE
ISBN
9781510616172
ISSN
0277-786X
Source
International Conference on Space Optics 2012, ICSO 2012. 9 October 2012 through 12 October 2012, 10564
Series
Proceedings of SPIE - The International Society for Optical Engineering
Article number
105643G
Document type
conference paper