MIPAS level 2 operational analysis
By P. Raspollini, C. Belotti, A. Burgess, B. Carli, M. Carlotti, S. Ceccherini, B. Dinelli, A. Dudhia, J. Flaud, Bernd Funke and 7 more. 2006
168 citations recorded by the source corpus.
The MIPAS (Michelson Interferometer for Pas- sive Atmospheric Sounding) instrument has been operating on-board the ENVISAT satellite since March 2002. In the first two years, it acquired in a nearly continuous manner high resolution (0.025 cm 1 unapodized) emission spectra of the Earth's atmosphere at limb in the middle infrared region. This paper describes the level 2 near real-time (NRT) and off- line (OL) ESA processors that have been used to derive level 2 geophysical products from the calibrated and geolocated level 1b spectra. The design of the code and the analysis methodology have been driven by the requirements for NRT processing. This paper reviews the performance of the opti- mized retrieval strategy that has been implemented to achieve these requirements and provides estimated error budgets for the target products: pressure, temperature, O 3, H2O, CH4, HNO3, N2O and NO2, in the altitude measurement range from 6 to 68 km. From application to real MIPAS data, it was found that no change was needed in the developed code although an ex- ternal algorithm was introduced to identify clouds with high opacity and to exclude affected spectra from the analysis. In addition, a number of updates were made to the set-up pa- rameters and to auxiliary data. In particular, a new version of the MIPAS dedicated spectroscopic database was used and, in the OL analysis, the retrieval range was extended to reduce errors due to uncertainties in extrapolation of the profile out- side the retrieval range and more stringent convergence cri- teria were implemented.
Subfields: Atmospheric Science, Global and Planetary Change, Spectroscopy
View Paper: https://www.semanticscholar.org/paper/c198b1523c8d5c0ad417bbc2cde93556d03ce73f
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Citations in the corpus
- Validation of the Aura Microwave Limb Sounder middle atmosphere water vapor and nitrous oxide measurements (2007, background): “In addition to the ESA operational data products [Raspollini et al., 2006], several institutions funded by the ENVISAT Calibration/ Validation Program have developed off-line data processing capabilities for MIPAS.”
- Validation of Aura Microwave Limb Sounder stratospheric ozone measurements (2008, unknown): “In addition to the ESA operational data products [Raspollini et al., 2006], several institutions funded by the ENVISAT Calibration/Validation Program have developed off-line data processing capabilities for MIPAS.”