Determination of the Total Ozone Content in Cloudy Conditions based on Data from the IKFS-2 Spectrometer onboard the Meteor-M no. 2 Satellite

Izvestiya, Atmospheric and Oceanic Physics - A new technique has been developed to obtain the total ozone content (TOC) under cloudy conditions from the spectra of outgoing thermal IR radiation...     

Analysis of Capabilities for Satellite Monitoring of Atmospheric Gaseous Composition Using IRFS-2 Instrument

Capabilities of the total column monitoring of different minor gaseous compounds of the atmosphere with the satellite IRFS-2 Fourier interferometer have been studied. The possibilities of determining the СО₂, О₃, СH₄, HNO₃, N₂O, CH₃OH, HCFC-22, CFC-11, CFC-12, PAN, and ССl₄ total columns have been investigated on the basis of line-by-line calculations of the forward problem operator and calculation of error matrices by the optimal estimation method. It has been shown that the IRFS-2 device could be used to measure the total columns of СО₂, О₃, N₂O, СH₄, and HNO₃. In the information-gathering mode, it is also possible to retrieve the CH₃OH, HCFC-22, CFC-11, CFC-12, PAN, and ССl₄ total columns due to the suppression of random measurement errors.     

Determination of the total ozone content from data of satellite IR Fourier-spectrometer

Examples of retrieval of the total ozone content (TOC) from the spectra of outgoing thermal radiation measured by the IRFS-2 device on the Meteor-M no. 2 meteorological satellite are presented. The technique, developed by the authors and based on an artificial neural network (ANN) approach with the use of TOC measurements by the satellite OMI device, is applied. A comparison of the results with the data of independent TOC measurements has shown their agreement within 2–5% for global ensemble and within 3–6% for separate latitudes and seasons. The errors estimated for IRFS-2 TOC measurements are close to the errors in measurements by a similar IASI device from the MetOp (EUMETSAT) satellite.