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AbstractAt present, in optical remote sensing of atmosphere from space, a new problem class appears: to determine little gas components (carbon dioxide, methane, etc.), which cause greenhouse effect. Concentration of these gases in atmosphere is less than one percent, which rigidly limits accuracy of satellite measurements and of simulating spatial concentration of the radiation (signal) flow reflected by Earth. In the article, a description of simulating signals received by satellite spectrometer in nearinfrared spectrum region is given. The signals are solar radiation passed through an atmosphere layer and reflected from Earth surface. It is calculated based on parametrical radiation atmosphere scattering and absorption model, which takes into consideration both multidimensional atmosphere parameter structure and Earth surface relief. Accounting such information allows you to go from measurement of spatial radiation flux to calculations of gas concentration for an arbitrary geographical Earth surface point and for any time point. As an example, calculations for Fourier spectrometer for spectrum measurement near IR region with an average spectral resolution are presented. The spectrometer was installed on the GOSAT satellite of the Space Agency of Japan. A comparison of computed and of really measured values of the signal received by the satellite shows that deviation for the Sun zenith angle equal to 30o does not exceed 3 %.
References1. Gushchin G.P. Studies of atmospheric ozone. Leningrad: Gidrometeoizdat, 1963, 289 p. 2. Khrgian A.H. Physics of atmospheric ozone. Leningrad: Gidrometeoizdat, 1973, 285 p. 3. Malkevich M.S. Optical studies of atmosphere from satellites. Moscow: Nauka, 1973, 303 p. 4. Kondratyev K. Ya., Timofeev Yu.M. Meteorological sounding of atmosphere from space. Leningrad: Gidrometeoizdat, 1978, 280 p. 5. Timofeev YU. M., Vasilyev A.V. Fundamentals of theoretical atmospheric optics. SPb., 2007, 152 p. 6. Hoffman N., Preetham A.J. Realtime lightatmosphere interactions for outdoor scenes. // Graphics programming methods, 2003, pp. 337–352. 7. Otterman, J. Singlescattering solution for radiative transfer through a turbid atmosphere. // Appl. Opt, 1978, Vol.1, No.17(21), pp. 3431–3438. 8. http://smsc.cnes.fr/IASI. 9. http://www.sciamachy.org. 10. http://www.gosat.nies.go.jp. 11. IPCC, Synthesis Report, Section 2.4: Attribution of climate change, in IPCC AR4 SYR2007.v 12. Solomon S., Qin D., Manning M., Chen Z., Marquis M., Averyt K.B., Tignor M., Miller H.L. (eds). IPCC2007: Climate Change 2007: The Physical Science Basis. // Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 996p. 13. Pachauri R.K., Meyer L.A. (eds.) IPCC2014: Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, IPCC, Geneva, Switzerland, 151p. 14. Katayev M. Yu. A program simulation system of solar radiation reflected from Earth surface /M. Yu. Katayev, I.V. Boychenko // TUSUR Reports, 2009, #1(19), Part1, pp. 88–95. 15. Krylov A.S., Vtyurin A.N., Gerasimova Yu.V. Data processing of infrared Fourier of spectroscopy. A textbook of methodics. Preprint #832 Ф. Krasnoyarsk: Institute of physics of the Siberian Branch of the Russian Academy of Science, 2005, 48 p. 16. Hopfner M., Emde C. Comparison of single and multiple scattering approaches for the simulation of limbemission observations in the midIR // Journal of Quantitative Spectroscopy & Radiative Transfer, 2005, Vol. 91, No. 3, pp.275–285. 17. Breon F., Frouin R., Gautier C. Downwelling longwave irradiance at the ocean surface: An assessment of in situ measurements and parameterizations // J. Appl. Meteorology, 1991, Vol. 30, No.1, pp.17–31. 18. Kane Van, R., Gillespie, A.R. Interpretation and topographic compensation of conifer canopy selfshadowing // Remote Sensing of Environment, 2008, Vol. 112, No. 10, pp.3820–3822. 19. Farr, T.G., Hensley, S., Rodriguez, E., Martin, J., Kobrick, M. The shuttle radar topography mission // CEOS SAR Workshop, Toulouse 26–29 Oct. 1999, Noordwijk, 2000, pp. 361–363. 20. Rothman, L.S., Gordon, I.E., Babikov, Y. et al. The HITRAN2012 Molecular Spectroscopic Database // Journal of Quantitative Spectroscopy and Radiation Transfer, 2013, Vol.130, No. 11, pp. 4–50. 21. http://www.ncep.noaa.gov/. 22. Hess, M., Koepke, P., Schult, I. Optical Properties of Aerosols and clouds: The software package OPAC // Bull. Am. Met. Soc., 1998, Vol. 79, No. 5, pp. 831–844. 23. Thuillier, G., Herse, M., Simon, P.C., Labs, D., Mandel, H., Gillotay, D., Foujols, T. The solar spectral irradiance from 200 to 2400 nm as measured by the SOLSPEC spectrometer from the ATLAS1–2–3 and EURECA missions // Sol. Phys., 2003, Vol. 214, No. 1, pp. 1–22. 24. Katayev M. Yu., Lukyanov A.K. Parallel technologies in the simulation problem of a satellite Fourier spectrometer signal // The Seventh Siberian conference on parallel and highperformance calculations. Report program and theses, November, 12–14, 2013, Tomsk: Publishing House of the Tomsk University, 2013, pp. 23–24.