Vol. 29, issue 10, article # 7

Firsov K.M., Chesnokova T.Yu., Klitochenko I.I. Contribution of water vapor continuum absorption to longwave radiative fluxes in the cloudy and cloudless atmosphere. // Optika Atmosfery i Okeana. 2016. V. 29. No. 10. P. 843–849 [in Russian].
Copy the reference to clipboard

The atmospheric transparency window of 8–12 μm is one of the main spectral intervals forming thermal balance of the atmosphere; at that, the contribution of continual absorption to the radiative balance is the most significant. The results of simulation of upward and downward fluxes for different meteorological situations (cloudy and cloudless) are presented; and role of H2O continuum is estimated with use of different models of continual absorption.


water vapor continual absorption, cirrus cloud, transfer of radiation, radiative forcing


  1. Forster P., Ramaswamy V., Artaxo P., Berntsen T., Betts R., Fahey D.W., Haywood J., Lean J., Lowe D.C., Myhre G., Nganga J., Prinn R., Raga G., Schulz M., Van Dorland R. IPCC, 2007: «Changes in Atmospheric Constituents and in Radiative Forcing» in Climate Change; 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change / Ed. by S. Solomon, D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M. Tignor, H.L. Miller. Cambridge Univ., Cambridge, UK, USA, 2007.
  2. Fomin B.A., Falaleeva V.A. Progress v atmosfernoj spektroskopii i «jetalonnye» raschety dlja testirovanija radiacionnyh blokov klimaticheskih modelej // Optika atmosf. i okeana. 2009. V. 22, N 8. P. 803–806; Fоmin B.А., Fаlаlееvа V.А. Recent progress in spectroscopy and its effect on line-by-line calculations for the validation of radiation codes for climate models // Atmos. Ocean. Opt. 2009. V. 22, N 6. P. 626–629.
  3. Firsov K.M., Chesnokova T.Yu., Bobrov E.V., Klitochenko I.I. Estimation of uncertainties in the longwave radiative fluxes simulation due to spectroscopic errors // Proc. SPIE. 2014. V. 9292. P. 929205. DOI: 10.1117/12.2075550.
  4. Mlawer E.J., Payne V.H., Moncet J.-L., Delamere J.S., Alvarado M.J., Tobin D.C. Development and recent evaluation of the MT_CKD model of continuum absorption // Phil. Trans. Roy. Soc. A. 2012. V. 370. P. 2520–2556. DOI: 10.1098/rsta.2011.0295.
  5. Huang Y., Ramaswamy V., Soden B. An investigation of the sensitivity of the clear-sky outgoing longwave radiation to atmospheric temperature and water vapor // J. Geophys. Res. 2007. V. 112. Р. 13. D05104. DOI: 10.1029/2005JD006906.
  6. Paynter D.J., Ramaswamy V. An assessment of recent water vapor continuum measurements upon longwave and shortwave radiative transfer // J. Geophys. Res. 2011. V. 116. 13 p. D20302. DOI: 10.1029/2010JD015505.
  7. Radel G., Shine K.P., Ptashnik I.V. Global radiative and climate effect of the water vapour continuum at visible and near-infrared wavelengths // Quart. J. Roy. Meteorol. Soc. 2015. V. 141. P. 727–738. DOI: 10.1002/qj.2385.
  8. Stephens G.L., Wild M., Stackhouse P.W., Ecuyer T.L., Kato S., Henderson D.S. The global character of the flux of downward longwave radiation // J. Climate. 2012. V. 25. P. 2329–2340. DOI: 10.1175/JCLI-D-11-00262.1
  9. Turner D.D., Merrelli A., Vimont D., Mlawer E.J. Impact of modifying the longwave water vapor continuum absorption model on community Earth system model simulations // J. Geophys. Res. 2012. V. 117. P. 11. D04106. DOI: 10.1029/2011JD016440.
  10. Baranov Yu.I., Lafferty W.J., Ma Q., Tipping R.H. Water-vapor continuum absorption in the 800–1250 cm–1 spectral region at temperatures from 311 to 363 K // J. Quant. Spectrosc. Radiat. Transfer. 2008. V. 109, N 12–13. P. 2291–2302.
  11. Baranov Yu.I., Lafferty W.J. The water vapour self- and water-nitrogen continuum absorption in the 1000 and 2500 cm–1 atmospheric windows // Phil. Trans. Roy. Soc. A. 2012. V. 370. P. 2578–2589.
  12. Firsov K.M., Chesnokova T.Ju., Bobrov E.V. Rol' kontinual'nogo pogloshhenija parov vody v dlinnovolnovyh radiacionnyh processah prizemnogo sloja atmosfery v regione Nizhnego Povolzh'ja // Optika atmosf. i okeana. 2014. V. 27, N 8. P. 665–672; Firsov K.M., Chesnokova T.Yu., Bobrov E.V. The role of the water vapor continuum absorption in near ground long-wave radiation processes of the lower Volga Region // Atmos. Ocean. Opt. 2014. V. 28, N 1. P. 1–8.
  13. Burch D.E., Alt R.L. Continuum absorption by H2O in the 700–1200 cm–1 and 2400–2800 cm–1 windows // AFGL-TR-84-0128, Air Force Geophys. Lab., Hanscom AFB, Mass. 1984.
  14. De Leon R.R., Haigh J.D. Infrared properties of cirrus clouds in climate models // Quart. J. Roy. Meteorol. Soc. 2007. V. 133. P. 273–282.
  15. Fu Q., Yang P., Sun W.B. An accurate parameterization of the infrared radiative properties of cirrus clouds for climate models // J. Climate. 1998. V. 11. P. 2223–2237.
  16. Yong-Sang Choi, Chang-Hoi Ho. Radiative effect of cirrus with different optical properties over the tropics in MODIS and CERES observations // Geophys. Res. Lett. 2006. V. 33. L21811. DOI: 10.1029/2006GL027403.
  17. CCMVal Radiation Intercomparison. URL: http:// homepages.see.leeds.ac.uk/~earpmf/ccmvalrad.shtml