MIPAS (Michelson Interferometer for Passive Atmospheric Sounding), a limb-viewing infrared interferometer, operated on-board the ENVISAT satellite from 2002 to 2012. In the past years a huge effort was performed in correcting the time dependent non-linear response of its detectors, in order to produce calibrated measurements stable in time. The new calibration strategy has been implemented into the latest version (V8) of the Level 1 processor. Also the Level 2 (L2) processor has been upgraded, the main improvements being the handling of horizontal gradients and the use of an upgraded spectroscopic database. Both new processors have been used to generate three Diagnostic Datasets. The new L2 datasets contain the vertical distributions of Temperature and the VMR of H2O, O3, HNO3, CH4, N2O, NO2, CFC-11, CFC-12, N2O5, ClONO2, HCFC-22, COF2, CF4, HCN, CCl4, OCS, CH3Cl, HDO, C2H2, C2H6, and COCl2. For each month of MIPAS lifetime, the data have been averaged in latitudinal bins at fixed pressure levels, and for each level, trends have been estimated using the same method described in Valeri et al. (2017). In this paper we will show some examples of the estimated trends, concentrating on reactive molecules like phosgene.
Trends of Minor Atmospheric Gases Evaluated Using MIPAS V8 Products
Pettinari Paolo;Dinelli Bianca Maria;Raspollini Piera;Ridolfi Marco;Zoppetti Nicola
2018
Abstract
MIPAS (Michelson Interferometer for Passive Atmospheric Sounding), a limb-viewing infrared interferometer, operated on-board the ENVISAT satellite from 2002 to 2012. In the past years a huge effort was performed in correcting the time dependent non-linear response of its detectors, in order to produce calibrated measurements stable in time. The new calibration strategy has been implemented into the latest version (V8) of the Level 1 processor. Also the Level 2 (L2) processor has been upgraded, the main improvements being the handling of horizontal gradients and the use of an upgraded spectroscopic database. Both new processors have been used to generate three Diagnostic Datasets. The new L2 datasets contain the vertical distributions of Temperature and the VMR of H2O, O3, HNO3, CH4, N2O, NO2, CFC-11, CFC-12, N2O5, ClONO2, HCFC-22, COF2, CF4, HCN, CCl4, OCS, CH3Cl, HDO, C2H2, C2H6, and COCl2. For each month of MIPAS lifetime, the data have been averaged in latitudinal bins at fixed pressure levels, and for each level, trends have been estimated using the same method described in Valeri et al. (2017). In this paper we will show some examples of the estimated trends, concentrating on reactive molecules like phosgene.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
