Retrieval of Atmospheric Trace Constituents from Envisat Mipas Observations by Means of Rapid Radiative Transfer Calculations: First Results for Cfc-11
نویسندگان
چکیده
An optimal estimation retrieval approach has been applied to derive CFC-11 vertical profiles from Envisat MIPAS measurements. Rapid forward modeling during the retrieval process is based on well-tested approximative methods for the evaluation of the radiative transfer equation. We give a short description of the retrieval system, show an error analysis and discuss the global distribution of CFC-11 as observed on March 4th, 2004.
منابع مشابه
Envisat MIPAS measurements of CFC-11: retrieval, validation, and climatology
From July 2002 to March 2004 the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) aboard the European Space Agency’s Environmental Satellite (Envisat) measured nearly continuously mid infrared limb radiance spectra. These measurements are utilised to retrieve the global distribution of the chlorofluorocarbon CFC11 by applying a new fast forward model for Envisat MIPAS and an ac...
متن کاملInteractive comment on “Envisat MIPAS
The paper reports the assessment of CFC-11 abundances in the stratosphere obtained using MIPAS observations in the first two years of operation. The retrieval of CFC-11 abundances from the measured radiances is obtained using an approximated and fast forward model. Even if yet limited to the two year for which consolidated MIPAS data are available, the analysis provides detailed information on ...
متن کاملValidation of Mipas-envisat Ch4, N2o, Cfc-11 and Cfc-12 by Airborne in Situ Observations
Airborne in situ measurements of the trace gases CH4, N2O, CFC-11 and CFC-12 with the High Altitude Gas AnalyzeR (HAGAR) on board the M55 Geophysica aircraft and the balloon-borne cryosampler BONBON of the University of Frankfurt are compared to vertical profiles from MIPAS-ENVISAT. We validate ESA level-2 standard products (v. 4.61) and non-operational trace gas profiles of CH4, N2O, CFC-11 an...
متن کاملStratospheric Loss and Atmospheric Lifetimes of CFC-11 and CFC-12 Derived From Satellite Observations
The lifetimes of CFC-11 and CFC-12 have been evaluated using global observations of their stratospheric distributions from satellite-based instruments over the time period from 1992 to 2010. The chlorofluorocarbon (CFC) datasets are from the Cryogen Limb Array Etalon Spectrometer (CLAES), the Cryogenic Infrared Spectrometers and Telescopes for the Atmosphere (CRISTA-1 and CRISTA2), the Michelso...
متن کاملFuture Data Analysis Techniques for Atmospheric Remote Sensing Measurements: First Steps towards Grid Computing
Within two projects it is studied how the rapid radiative transfer model JURASSIC (Juelich Rapid Spectral Simulation Code) performs in cluster computing environments. We do so, having data analysis of future atmospheric satellite experiments in mind, which are likely to provide 10 – 100 times more measurement data than todays instruments. First studies presented here are based on radiance measu...
متن کامل