Comparison of Outgoing ir Radiation Spectra Measured in Diff erent Yea

Comparisons of outgoing IR radiation spectra measured by Fourier SI-1 spectrometer in 1977 and 1979 from the Meteor-28 and -29 satellites to numerical calculations on the basis of the modern LBLRTM code and data of atmospheric radio sounding are carried out. In most cases, mean diff erences between measurements and calculations do not exceed 2 mW/(m2srcm–1) in the 660–1600 cm–1 spectral range. Standard deviations and mean square diff erences are, on average, 2–4 mW/(m2srсm–1). These values are greater by about 1 mW/(m2srсm–1) than relevant diff erences between calculations and measurements for modern IKFS-2 spectrometer. Comparisons of experimental spectra of 1977, 1979 and 2015–2016 have shown that, on average, the intensity of outgoing IR radiation measured by the IKFS-2 device, is by 0.5–3.0 mW/(m2srсm–1) less than SI-1 radiation measurements onboard Meteor-28 and -29 satellites obtained 40 years ago. This eff ect may be associated with the CO2 increase in the atmosphere and the resulting raising of radiating atmosphere layers to tropospheric layers with a smaller temperature.

Keywords

outgoing thermal radiation, Fourier-spectrometers SI-1 and IKFS-2, climate change

Acknowledgment

This study was supported by the RFBR grant 17–05–00768.

Received

26.12.2018

Publication date

26.12.2018

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GOST	Polyakov A., Golovin Y., Deler V., Ertel D., Shpenkuh D. Comparison of Outgoing ir Radiation Spectra Measured in Diff erent Yea // Issledovanie Zemli iz kosmosa – 2018. – Issue 5 C. 65-72 [Electronic resource]. URL: http://ras.jes.su/izk/s020596140003243-8-1-en (circulation date: 02.05.2024). DOI: 10.31857/S020596140003243-8
MLA	Polyakov, A., Golovin, Yu, Deler, V., Ertel, D., Shpenkuh, D. "Comparison of Outgoing ir Radiation Spectra Measured in Diff erent Yea." Issledovanie Zemli iz kosmosa 5 (2018):65-72. DOI: 10.31857/S020596140003243-8
APA	Polyakov A., Golovin Y., Deler V., Ertel D., Shpenkuh D. (2018). Comparison of Outgoing ir Radiation Spectra Measured in Diff erent Yea. Issledovanie Zemli iz kosmosa (5), pp.65-72 DOI: 10.31857/S020596140003243-8

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