Abstract

We present an experimental study of the self- and N2-broadened H2O continuum in microwindows within the ν2 fundamental centered at ~1600 cm−1. The continuum is derived from transmission spectra recorded at room temperature with a BOMEM Fourier transform spectrometer at a resolution of ~0.040 cm−1. Although we find general agreement with previous studies, our results suggest that there is significant near-wing super-Lorentzian behavior that produces a highly wave-number-dependent structure in the continuum as it is currently defined.

© 1996 Optical Society of America

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  1. W. B. Grant, “Water vapor absorption coefficients in the 8–13 μm spectral region: a critical review,” Appl. Opt. 29, 451–462 (1990).
    [Crossref] [PubMed]
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  3. AIRS Project Office, “Atmospheric Infrared Sounder: science and measurement requirements,” Tech. Rep. D6665 Rev. 1 (Jet Propulsion Laboratory, Pasadena, Calif., 1991).
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    [Crossref]
  5. R. H. Tipping, Q. Ma, “Theory of the water vapor continuum and validations,” Atmos. Res. 36, 69–94 (1995), and references therein.
    [Crossref]
  6. S. A. Clough, F. X. Kneizys, R. Davies, R. Gamache, R. Tipping, “Theoretical lineshape for the H2O vapor: application to the continuum,” in Atmospheric Water Vapor, A. Deepak, T. D. Wilkerson, L. H. Ruhnke, eds. (Academic, New York, 1980), pp. 25–46.
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    [Crossref]
  8. S. A. Clough, in “The water vapor continuum and its role in remote sensing,” in Optical Remote Sensing of the Atmosphere, Vol. 2 of 1995 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1995), pp. 76–78.
  9. P. W. Rosenkranz, “Pressure broadening of rotational bands. I. A statistical theory,” J. Chem. Phys. 83, 6139–6144 (1985).
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    [Crossref]
  12. Q. Ma, R. H. Tipping, “An improved quasistatic line-shape theory: the effects of molecular motion on the line wings,” J. Chem. Phys. 100, 5567–5579 (1994).
    [Crossref]
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    [Crossref]
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  15. D. E. Burch, R. L. Alt, “Continuum absorption by H2O in the 700–1200 cm−1 and 2400–2800 cm−1 windows,” Rep. AFGL-TR-84-0128 (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1984).
  16. D. E. Burch, “Absorption by H2O in narrow windows between 3000 and 4200 cm−1,” Rep. AFGL-TR-85-0036 (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1985).
  17. J.-M. Thériault, P. L. Roney, D. St.-Germain, H. E. Revercomb, R. O. Knuteson, W. L. Smith, “Analysis of the FASCODE model and its H2O continuum based on long path atmospheric transmission measurements in the 4.5–11.5 μm region,” Appl. Opt. 33, 323–333 (1994).
    [Crossref] [PubMed]
  18. W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
    [Crossref]
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  20. H. E. Revercomb, R. O. Knuteson, W. L. Smith, H. M. Woolf, H. B. Howell, “Spectroscopic inference from HIS measurements of atmospheric thermal emission,” in Optical Remote Sensing of the Atmosphere, Vol. 4 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), pp. 590–595.
  21. H. E. Revercomb, W. L. Smith, R. O. Knuteson, H. M. Woolf, H. B. Howell, “Comparison of FASCODE spectra with HIS observations,” in Annual Review Conference on Atmospheric Transmission Models (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1989).
  22. L. L. Strow, D. C. Tobin, S. E. Hannon, Department of Physics, University of Maryland Baltimore County, Baltimore, Md. 21228 (personal communication, CAMEX/HIS calculations with CKDv2.1), 1995.
  23. The mention of brand names in this paper is for information purposes only and does not constitute an endorsement of the product by the authors or their institutions.
  24. W. B. Olson, “Method for first-order design of a transfer optics system to throughput match a Fourier transform spectrometer to a sample cell without use of a field lens at the cell input,” Appl. Opt. 26, 2441–2445 (1987).
    [Crossref] [PubMed]
  25. L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
    [Crossref]
  26. R. A. Toth, “ν2 band of H216O: line strengths and transition frequencies,” J. Opt. Soc. Am. B 8, 2236–2255 (1991).
    [Crossref]
  27. R. A. Toth, Jet Propulsion Laboratory, Pasadena, Calif. 91109 (personal communication, 1994).
  28. J. J. Remedios, Ph.D. dissertation (Oxford University, New York, 1990).
  29. R. R. Gamache, R. W. Davies, “Theoretical calculations of N2-broadened halfwidths of H2O using quantum Fourier transform theory,” Appl. Opt. 22, 4013–4019 (1983).
    [Crossref] [PubMed]
  30. Q. Ma, R. H. Tipping, “A far wing line shape theory and its application to the water vibrational bands (II),” J. Chem. Phys. 96, 8655–8663 (1992).
    [Crossref]
  31. Q. Ma, R. H. Tipping, “A far wing line shape theory and its application to the foreign-broadened water continuum absorption (III),” J. Chem. Phys. 97, 818–830 (1992).
    [Crossref]
  32. P. Hannan, “White cell design considerations,” Opt. Eng. 28, 1180–1184 (1989).

1995 (1)

R. H. Tipping, Q. Ma, “Theory of the water vapor continuum and validations,” Atmos. Res. 36, 69–94 (1995), and references therein.
[Crossref]

1994 (4)

H. H. Aumann, R. J. Pagano, “Atmospheric Infrared Sounder on the Earth Observing System,” Opt. Eng. 33, 776–784 (1994).
[Crossref]

Q. Ma, R. H. Tipping, “A near-wing correction to the quasistatic far-wing line shape theory,” J. Chem. Phys. 100, 2537–2546 (1994).
[Crossref]

Q. Ma, R. H. Tipping, “An improved quasistatic line-shape theory: the effects of molecular motion on the line wings,” J. Chem. Phys. 100, 5567–5579 (1994).
[Crossref]

J.-M. Thériault, P. L. Roney, D. St.-Germain, H. E. Revercomb, R. O. Knuteson, W. L. Smith, “Analysis of the FASCODE model and its H2O continuum based on long path atmospheric transmission measurements in the 4.5–11.5 μm region,” Appl. Opt. 33, 323–333 (1994).
[Crossref] [PubMed]

1992 (3)

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Q. Ma, R. H. Tipping, “A far wing line shape theory and its application to the water vibrational bands (II),” J. Chem. Phys. 96, 8655–8663 (1992).
[Crossref]

Q. Ma, R. H. Tipping, “A far wing line shape theory and its application to the foreign-broadened water continuum absorption (III),” J. Chem. Phys. 97, 818–830 (1992).
[Crossref]

1991 (1)

1990 (3)

W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
[Crossref]

W. B. Grant, “Water vapor absorption coefficients in the 8–13 μm spectral region: a critical review,” Appl. Opt. 29, 451–462 (1990).
[Crossref] [PubMed]

M. E. Thomas, “Infrared and millimeter wavelength continuum absorption in the atmospheric windows: measurements and models,” Infrared Phys. 30, 161–174 (1990).
[Crossref]

1989 (2)

S. A. Clough, F. X. Kneizys, R. W. Davies, “Line shape and the water vapor continuum,” Atmos. Res. 23, 229–241 (1989).
[Crossref]

P. Hannan, “White cell design considerations,” Opt. Eng. 28, 1180–1184 (1989).

1987 (2)

1985 (1)

P. W. Rosenkranz, “Pressure broadening of rotational bands. I. A statistical theory,” J. Chem. Phys. 83, 6139–6144 (1985).
[Crossref]

1983 (1)

R. R. Gamache, R. W. Davies, “Theoretical calculations of N2-broadened halfwidths of H2O using quantum Fourier transform theory,” Appl. Opt. 22, 4013–4019 (1983).
[Crossref] [PubMed]

1967 (1)

D. E. Burch, D. A. Gryvnak, R. R. Patty, “Absorption of infrared radiation by CO2 and H2O. Experimental techniques,” J. Opt. Soc. Am. B 57, 885–895 (1967).
[Crossref]

Alt, R. L.

D. E. Burch, R. L. Alt, “Continuum absorption by H2O in the 700–1200 cm−1 and 2400–2800 cm−1 windows,” Rep. AFGL-TR-84-0128 (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1984).

Anderson, G. P.

S. A. Clough, R. D. Worsham, W. L. Smith, H. E. Revercomb, R. O. Knuteson, G. P. Anderson, M. L. Hoke, F. X. Kneizys, “Validation of FASCODE calculations with HIS spectral radiance measurements,” in Proceedings of the International Radiation Symposium ’88, J. Lenoble, J.-F. Geleyn, eds. (Deepak, Hampton, Va., 1989), pp. 376–379.

Aumann, H. H.

H. H. Aumann, R. J. Pagano, “Atmospheric Infrared Sounder on the Earth Observing System,” Opt. Eng. 33, 776–784 (1994).
[Crossref]

Benner, D. C.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Brown, L. R.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Burch, D. E.

D. E. Burch, D. A. Gryvnak, R. R. Patty, “Absorption of infrared radiation by CO2 and H2O. Experimental techniques,” J. Opt. Soc. Am. B 57, 885–895 (1967).
[Crossref]

D. E. Burch, “Absorption by H2O in narrow windows between 3000 and 4200 cm−1,” Rep. AFGL-TR-85-0036 (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1985).

D. E. Burch, “Continuum absorption by H2O,” Ford Aerontronic Rep. AFGL-TR-81-0300 (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1981).

D. E. Burch, R. L. Alt, “Continuum absorption by H2O in the 700–1200 cm−1 and 2400–2800 cm−1 windows,” Rep. AFGL-TR-84-0128 (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1984).

Camy-Peyret, C.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Clough, S. A.

S. A. Clough, F. X. Kneizys, R. W. Davies, “Line shape and the water vapor continuum,” Atmos. Res. 23, 229–241 (1989).
[Crossref]

S. A. Clough, in “The water vapor continuum and its role in remote sensing,” in Optical Remote Sensing of the Atmosphere, Vol. 2 of 1995 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1995), pp. 76–78.

S. A. Clough, F. X. Kneizys, R. Davies, R. Gamache, R. Tipping, “Theoretical lineshape for the H2O vapor: application to the continuum,” in Atmospheric Water Vapor, A. Deepak, T. D. Wilkerson, L. H. Ruhnke, eds. (Academic, New York, 1980), pp. 25–46.

S. A. Clough, R. D. Worsham, W. L. Smith, H. E. Revercomb, R. O. Knuteson, G. P. Anderson, M. L. Hoke, F. X. Kneizys, “Validation of FASCODE calculations with HIS spectral radiance measurements,” in Proceedings of the International Radiation Symposium ’88, J. Lenoble, J.-F. Geleyn, eds. (Deepak, Hampton, Va., 1989), pp. 376–379.

Davies, R.

S. A. Clough, F. X. Kneizys, R. Davies, R. Gamache, R. Tipping, “Theoretical lineshape for the H2O vapor: application to the continuum,” in Atmospheric Water Vapor, A. Deepak, T. D. Wilkerson, L. H. Ruhnke, eds. (Academic, New York, 1980), pp. 25–46.

Davies, R. W.

S. A. Clough, F. X. Kneizys, R. W. Davies, “Line shape and the water vapor continuum,” Atmos. Res. 23, 229–241 (1989).
[Crossref]

R. R. Gamache, R. W. Davies, “Theoretical calculations of N2-broadened halfwidths of H2O using quantum Fourier transform theory,” Appl. Opt. 22, 4013–4019 (1983).
[Crossref] [PubMed]

Flaud, J.-M.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Gamache, R.

S. A. Clough, F. X. Kneizys, R. Davies, R. Gamache, R. Tipping, “Theoretical lineshape for the H2O vapor: application to the continuum,” in Atmospheric Water Vapor, A. Deepak, T. D. Wilkerson, L. H. Ruhnke, eds. (Academic, New York, 1980), pp. 25–46.

Gamache, R. R.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

R. R. Gamache, R. W. Davies, “Theoretical calculations of N2-broadened halfwidths of H2O using quantum Fourier transform theory,” Appl. Opt. 22, 4013–4019 (1983).
[Crossref] [PubMed]

Goldman, A.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Grant, W. B.

Gryvnak, D. A.

D. E. Burch, D. A. Gryvnak, R. R. Patty, “Absorption of infrared radiation by CO2 and H2O. Experimental techniques,” J. Opt. Soc. Am. B 57, 885–895 (1967).
[Crossref]

Hannan, P.

P. Hannan, “White cell design considerations,” Opt. Eng. 28, 1180–1184 (1989).

Hannon, S. E.

L. L. Strow, D. C. Tobin, S. E. Hannon, Department of Physics, University of Maryland Baltimore County, Baltimore, Md. 21228 (personal communication, CAMEX/HIS calculations with CKDv2.1), 1995.

Hoke, M. L.

S. A. Clough, R. D. Worsham, W. L. Smith, H. E. Revercomb, R. O. Knuteson, G. P. Anderson, M. L. Hoke, F. X. Kneizys, “Validation of FASCODE calculations with HIS spectral radiance measurements,” in Proceedings of the International Radiation Symposium ’88, J. Lenoble, J.-F. Geleyn, eds. (Deepak, Hampton, Va., 1989), pp. 376–379.

Howell, H. B.

W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
[Crossref]

H. E. Revercomb, R. O. Knuteson, W. L. Smith, H. M. Woolf, H. B. Howell, “Spectroscopic inference from HIS measurements of atmospheric thermal emission,” in Optical Remote Sensing of the Atmosphere, Vol. 4 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), pp. 590–595.

H. E. Revercomb, W. L. Smith, R. O. Knuteson, H. M. Woolf, H. B. Howell, “Comparison of FASCODE spectra with HIS observations,” in Annual Review Conference on Atmospheric Transmission Models (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1989).

Huang, H.-L.

W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
[Crossref]

Kneizys, F. X.

S. A. Clough, F. X. Kneizys, R. W. Davies, “Line shape and the water vapor continuum,” Atmos. Res. 23, 229–241 (1989).
[Crossref]

S. A. Clough, F. X. Kneizys, R. Davies, R. Gamache, R. Tipping, “Theoretical lineshape for the H2O vapor: application to the continuum,” in Atmospheric Water Vapor, A. Deepak, T. D. Wilkerson, L. H. Ruhnke, eds. (Academic, New York, 1980), pp. 25–46.

S. A. Clough, R. D. Worsham, W. L. Smith, H. E. Revercomb, R. O. Knuteson, G. P. Anderson, M. L. Hoke, F. X. Kneizys, “Validation of FASCODE calculations with HIS spectral radiance measurements,” in Proceedings of the International Radiation Symposium ’88, J. Lenoble, J.-F. Geleyn, eds. (Deepak, Hampton, Va., 1989), pp. 376–379.

Knuteson, R. O.

J.-M. Thériault, P. L. Roney, D. St.-Germain, H. E. Revercomb, R. O. Knuteson, W. L. Smith, “Analysis of the FASCODE model and its H2O continuum based on long path atmospheric transmission measurements in the 4.5–11.5 μm region,” Appl. Opt. 33, 323–333 (1994).
[Crossref] [PubMed]

W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
[Crossref]

S. A. Clough, R. D. Worsham, W. L. Smith, H. E. Revercomb, R. O. Knuteson, G. P. Anderson, M. L. Hoke, F. X. Kneizys, “Validation of FASCODE calculations with HIS spectral radiance measurements,” in Proceedings of the International Radiation Symposium ’88, J. Lenoble, J.-F. Geleyn, eds. (Deepak, Hampton, Va., 1989), pp. 376–379.

H. E. Revercomb, W. L. Smith, R. O. Knuteson, H. M. Woolf, H. B. Howell, “Comparison of FASCODE spectra with HIS observations,” in Annual Review Conference on Atmospheric Transmission Models (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1989).

H. E. Revercomb, R. O. Knuteson, W. L. Smith, H. M. Woolf, H. B. Howell, “Spectroscopic inference from HIS measurements of atmospheric thermal emission,” in Optical Remote Sensing of the Atmosphere, Vol. 4 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), pp. 590–595.

Koenig, E. W.

W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
[Crossref]

LaPorte, D. D.

W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
[Crossref]

Ma, Q.

R. H. Tipping, Q. Ma, “Theory of the water vapor continuum and validations,” Atmos. Res. 36, 69–94 (1995), and references therein.
[Crossref]

Q. Ma, R. H. Tipping, “A near-wing correction to the quasistatic far-wing line shape theory,” J. Chem. Phys. 100, 2537–2546 (1994).
[Crossref]

Q. Ma, R. H. Tipping, “An improved quasistatic line-shape theory: the effects of molecular motion on the line wings,” J. Chem. Phys. 100, 5567–5579 (1994).
[Crossref]

Q. Ma, R. H. Tipping, “A far wing line shape theory and its application to the foreign-broadened water continuum absorption (III),” J. Chem. Phys. 97, 818–830 (1992).
[Crossref]

Q. Ma, R. H. Tipping, “A far wing line shape theory and its application to the water vibrational bands (II),” J. Chem. Phys. 96, 8655–8663 (1992).
[Crossref]

Malathy Devi, V.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Massie, S. T.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Olson, W. B.

Pagano, R. J.

H. H. Aumann, R. J. Pagano, “Atmospheric Infrared Sounder on the Earth Observing System,” Opt. Eng. 33, 776–784 (1994).
[Crossref]

Patty, R. R.

D. E. Burch, D. A. Gryvnak, R. R. Patty, “Absorption of infrared radiation by CO2 and H2O. Experimental techniques,” J. Opt. Soc. Am. B 57, 885–895 (1967).
[Crossref]

Perrin, A.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Remedios, J. J.

J. J. Remedios, Ph.D. dissertation (Oxford University, New York, 1990).

Revercomb, H. E.

J.-M. Thériault, P. L. Roney, D. St.-Germain, H. E. Revercomb, R. O. Knuteson, W. L. Smith, “Analysis of the FASCODE model and its H2O continuum based on long path atmospheric transmission measurements in the 4.5–11.5 μm region,” Appl. Opt. 33, 323–333 (1994).
[Crossref] [PubMed]

W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
[Crossref]

S. A. Clough, R. D. Worsham, W. L. Smith, H. E. Revercomb, R. O. Knuteson, G. P. Anderson, M. L. Hoke, F. X. Kneizys, “Validation of FASCODE calculations with HIS spectral radiance measurements,” in Proceedings of the International Radiation Symposium ’88, J. Lenoble, J.-F. Geleyn, eds. (Deepak, Hampton, Va., 1989), pp. 376–379.

H. E. Revercomb, R. O. Knuteson, W. L. Smith, H. M. Woolf, H. B. Howell, “Spectroscopic inference from HIS measurements of atmospheric thermal emission,” in Optical Remote Sensing of the Atmosphere, Vol. 4 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), pp. 590–595.

H. E. Revercomb, W. L. Smith, R. O. Knuteson, H. M. Woolf, H. B. Howell, “Comparison of FASCODE spectra with HIS observations,” in Annual Review Conference on Atmospheric Transmission Models (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1989).

Rinsland, C. P.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Roney, P. L.

Rosenkranz, P. W.

P. W. Rosenkranz, “Pressure broadening of rotational bands. II. Water vapor from 300 to 1100 cm−1,” J. Chem. Phys. 87, 163–170 (1987).
[Crossref]

P. W. Rosenkranz, “Pressure broadening of rotational bands. I. A statistical theory,” J. Chem. Phys. 83, 6139–6144 (1985).
[Crossref]

Rothman, L. S.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Silverman, S.

W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
[Crossref]

Smith, M. A. H.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Smith, W. L.

J.-M. Thériault, P. L. Roney, D. St.-Germain, H. E. Revercomb, R. O. Knuteson, W. L. Smith, “Analysis of the FASCODE model and its H2O continuum based on long path atmospheric transmission measurements in the 4.5–11.5 μm region,” Appl. Opt. 33, 323–333 (1994).
[Crossref] [PubMed]

W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
[Crossref]

S. A. Clough, R. D. Worsham, W. L. Smith, H. E. Revercomb, R. O. Knuteson, G. P. Anderson, M. L. Hoke, F. X. Kneizys, “Validation of FASCODE calculations with HIS spectral radiance measurements,” in Proceedings of the International Radiation Symposium ’88, J. Lenoble, J.-F. Geleyn, eds. (Deepak, Hampton, Va., 1989), pp. 376–379.

H. E. Revercomb, W. L. Smith, R. O. Knuteson, H. M. Woolf, H. B. Howell, “Comparison of FASCODE spectra with HIS observations,” in Annual Review Conference on Atmospheric Transmission Models (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1989).

H. E. Revercomb, R. O. Knuteson, W. L. Smith, H. M. Woolf, H. B. Howell, “Spectroscopic inference from HIS measurements of atmospheric thermal emission,” in Optical Remote Sensing of the Atmosphere, Vol. 4 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), pp. 590–595.

Sromovsky, L. A.

W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
[Crossref]

St.-Germain, D.

Strow, L. L.

L. L. Strow, D. C. Tobin, S. E. Hannon, Department of Physics, University of Maryland Baltimore County, Baltimore, Md. 21228 (personal communication, CAMEX/HIS calculations with CKDv2.1), 1995.

Thériault, J.-M.

Thomas, M. E.

M. E. Thomas, “Infrared and millimeter wavelength continuum absorption in the atmospheric windows: measurements and models,” Infrared Phys. 30, 161–174 (1990).
[Crossref]

Tipping, R.

S. A. Clough, F. X. Kneizys, R. Davies, R. Gamache, R. Tipping, “Theoretical lineshape for the H2O vapor: application to the continuum,” in Atmospheric Water Vapor, A. Deepak, T. D. Wilkerson, L. H. Ruhnke, eds. (Academic, New York, 1980), pp. 25–46.

Tipping, R. H.

R. H. Tipping, Q. Ma, “Theory of the water vapor continuum and validations,” Atmos. Res. 36, 69–94 (1995), and references therein.
[Crossref]

Q. Ma, R. H. Tipping, “A near-wing correction to the quasistatic far-wing line shape theory,” J. Chem. Phys. 100, 2537–2546 (1994).
[Crossref]

Q. Ma, R. H. Tipping, “An improved quasistatic line-shape theory: the effects of molecular motion on the line wings,” J. Chem. Phys. 100, 5567–5579 (1994).
[Crossref]

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Q. Ma, R. H. Tipping, “A far wing line shape theory and its application to the water vibrational bands (II),” J. Chem. Phys. 96, 8655–8663 (1992).
[Crossref]

Q. Ma, R. H. Tipping, “A far wing line shape theory and its application to the foreign-broadened water continuum absorption (III),” J. Chem. Phys. 97, 818–830 (1992).
[Crossref]

Tobin, D. C.

L. L. Strow, D. C. Tobin, S. E. Hannon, Department of Physics, University of Maryland Baltimore County, Baltimore, Md. 21228 (personal communication, CAMEX/HIS calculations with CKDv2.1), 1995.

Toth, R. A.

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

R. A. Toth, “ν2 band of H216O: line strengths and transition frequencies,” J. Opt. Soc. Am. B 8, 2236–2255 (1991).
[Crossref]

R. A. Toth, Jet Propulsion Laboratory, Pasadena, Calif. 91109 (personal communication, 1994).

Woolf, H. M.

W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
[Crossref]

H. E. Revercomb, W. L. Smith, R. O. Knuteson, H. M. Woolf, H. B. Howell, “Comparison of FASCODE spectra with HIS observations,” in Annual Review Conference on Atmospheric Transmission Models (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1989).

H. E. Revercomb, R. O. Knuteson, W. L. Smith, H. M. Woolf, H. B. Howell, “Spectroscopic inference from HIS measurements of atmospheric thermal emission,” in Optical Remote Sensing of the Atmosphere, Vol. 4 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), pp. 590–595.

Worsham, R. D.

S. A. Clough, R. D. Worsham, W. L. Smith, H. E. Revercomb, R. O. Knuteson, G. P. Anderson, M. L. Hoke, F. X. Kneizys, “Validation of FASCODE calculations with HIS spectral radiance measurements,” in Proceedings of the International Radiation Symposium ’88, J. Lenoble, J.-F. Geleyn, eds. (Deepak, Hampton, Va., 1989), pp. 376–379.

Appl. Opt. (1)

R. R. Gamache, R. W. Davies, “Theoretical calculations of N2-broadened halfwidths of H2O using quantum Fourier transform theory,” Appl. Opt. 22, 4013–4019 (1983).
[Crossref] [PubMed]

Appl. Opt. (3)

Atmos. Res. (2)

R. H. Tipping, Q. Ma, “Theory of the water vapor continuum and validations,” Atmos. Res. 36, 69–94 (1995), and references therein.
[Crossref]

S. A. Clough, F. X. Kneizys, R. W. Davies, “Line shape and the water vapor continuum,” Atmos. Res. 23, 229–241 (1989).
[Crossref]

Infrared Phys. (1)

M. E. Thomas, “Infrared and millimeter wavelength continuum absorption in the atmospheric windows: measurements and models,” Infrared Phys. 30, 161–174 (1990).
[Crossref]

J. Chem. Phys. (1)

Q. Ma, R. H. Tipping, “A near-wing correction to the quasistatic far-wing line shape theory,” J. Chem. Phys. 100, 2537–2546 (1994).
[Crossref]

J. Appl. Meteorol. (1)

W. L. Smith, H. E. Revercomb, H. B. Howell, H.-L. Huang, R. O. Knuteson, D. D. LaPorte, E. W. Koenig, S. Silverman, L. A. Sromovsky, H. M. Woolf, “GHIS—the GOES high-resolution interferometer sounder,” J. Appl. Meteorol. 29, 1189–1204 (1990).
[Crossref]

J. Chem. Phys. (2)

P. W. Rosenkranz, “Pressure broadening of rotational bands. I. A statistical theory,” J. Chem. Phys. 83, 6139–6144 (1985).
[Crossref]

P. W. Rosenkranz, “Pressure broadening of rotational bands. II. Water vapor from 300 to 1100 cm−1,” J. Chem. Phys. 87, 163–170 (1987).
[Crossref]

J. Chem. Phys. (3)

Q. Ma, R. H. Tipping, “An improved quasistatic line-shape theory: the effects of molecular motion on the line wings,” J. Chem. Phys. 100, 5567–5579 (1994).
[Crossref]

Q. Ma, R. H. Tipping, “A far wing line shape theory and its application to the water vibrational bands (II),” J. Chem. Phys. 96, 8655–8663 (1992).
[Crossref]

Q. Ma, R. H. Tipping, “A far wing line shape theory and its application to the foreign-broadened water continuum absorption (III),” J. Chem. Phys. 97, 818–830 (1992).
[Crossref]

J. Opt. Soc. Am. B (2)

R. A. Toth, “ν2 band of H216O: line strengths and transition frequencies,” J. Opt. Soc. Am. B 8, 2236–2255 (1991).
[Crossref]

D. E. Burch, D. A. Gryvnak, R. R. Patty, “Absorption of infrared radiation by CO2 and H2O. Experimental techniques,” J. Opt. Soc. Am. B 57, 885–895 (1967).
[Crossref]

J. Quant. Spectrosc. Radiat. Transfer (1)

L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. Malathy Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The HITRAN molecular database: editions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992).
[Crossref]

Opt. Eng. (2)

P. Hannan, “White cell design considerations,” Opt. Eng. 28, 1180–1184 (1989).

H. H. Aumann, R. J. Pagano, “Atmospheric Infrared Sounder on the Earth Observing System,” Opt. Eng. 33, 776–784 (1994).
[Crossref]

Other (13)

R. A. Toth, Jet Propulsion Laboratory, Pasadena, Calif. 91109 (personal communication, 1994).

J. J. Remedios, Ph.D. dissertation (Oxford University, New York, 1990).

D. E. Burch, “Continuum absorption by H2O,” Ford Aerontronic Rep. AFGL-TR-81-0300 (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1981).

D. E. Burch, R. L. Alt, “Continuum absorption by H2O in the 700–1200 cm−1 and 2400–2800 cm−1 windows,” Rep. AFGL-TR-84-0128 (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1984).

D. E. Burch, “Absorption by H2O in narrow windows between 3000 and 4200 cm−1,” Rep. AFGL-TR-85-0036 (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1985).

S. A. Clough, R. D. Worsham, W. L. Smith, H. E. Revercomb, R. O. Knuteson, G. P. Anderson, M. L. Hoke, F. X. Kneizys, “Validation of FASCODE calculations with HIS spectral radiance measurements,” in Proceedings of the International Radiation Symposium ’88, J. Lenoble, J.-F. Geleyn, eds. (Deepak, Hampton, Va., 1989), pp. 376–379.

H. E. Revercomb, R. O. Knuteson, W. L. Smith, H. M. Woolf, H. B. Howell, “Spectroscopic inference from HIS measurements of atmospheric thermal emission,” in Optical Remote Sensing of the Atmosphere, Vol. 4 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), pp. 590–595.

H. E. Revercomb, W. L. Smith, R. O. Knuteson, H. M. Woolf, H. B. Howell, “Comparison of FASCODE spectra with HIS observations,” in Annual Review Conference on Atmospheric Transmission Models (U.S. Air Force Geophysics Laboratory, Hanscom Air Force Base, Mass., 1989).

L. L. Strow, D. C. Tobin, S. E. Hannon, Department of Physics, University of Maryland Baltimore County, Baltimore, Md. 21228 (personal communication, CAMEX/HIS calculations with CKDv2.1), 1995.

The mention of brand names in this paper is for information purposes only and does not constitute an endorsement of the product by the authors or their institutions.

S. A. Clough, in “The water vapor continuum and its role in remote sensing,” in Optical Remote Sensing of the Atmosphere, Vol. 2 of 1995 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1995), pp. 76–78.

AIRS Project Office, “Atmospheric Infrared Sounder: science and measurement requirements,” Tech. Rep. D6665 Rev. 1 (Jet Propulsion Laboratory, Pasadena, Calif., 1991).

S. A. Clough, F. X. Kneizys, R. Davies, R. Gamache, R. Tipping, “Theoretical lineshape for the H2O vapor: application to the continuum,” in Atmospheric Water Vapor, A. Deepak, T. D. Wilkerson, L. H. Ruhnke, eds. (Academic, New York, 1980), pp. 25–46.

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Figures (10)

Fig. 1
Fig. 1

Measured spectrum and calculations for 14.5-Torr H2O, 804-Torr N2, 296.1 K, 12.05-m path length.

Fig. 2
Fig. 2

Individual contributions of the far-wing (beyond 25 cm−1), near-wing (within 25 cm−1), and basement components to the total continuum absorption based on the use of CKDv0 (see Section 3 and Subsection 4.A).

Fig. 3
Fig. 3

Water vapor partial pressures determined for four sets of N2-broadened spectra in the high-wave-number band wing. Error bars are determined by averaging over results obtained from spectra at various N2 pressures.

Fig. 4
Fig. 4

Water vapor partial pressures determined for spectra at various N2 pressures from a line at ~2081.0 cm−1.

Fig. 5
Fig. 5

Self-broadened continuum coefficients from this research, Burch, CKD models, Ma and Tipping, and impact theory.

Fig. 6
Fig. 6

Expanded portion of Fig. 5.

Fig. 7
Fig. 7

N2-broadened continuum coefficients from this research, Burch, CKD models, Ma and Tipping, and impact theory.

Fig. 8
Fig. 8

Self-broadened continuum coefficients from this research reported for a larger number of microwindows (see Subsection 4.C).

Fig. 9
Fig. 9

N2-broadened continuum coefficients from this research reported for a larger number of microwindows (see Subsection 4.C).

Fig. 10
Fig. 10

Modified White cell design: C1, C2, and C3 are centers of curvature of mirrors M1, M2, and M3, respectively.

Tables (1)

Tables Icon

Table 1 Summary of the Experimental Parameters for Measured Spectraa

Equations (5)

Equations on this page are rendered with MathJax. Learn more.

k con ( ν ) = P H 2 O L ρ 0 ( 273 . 15 T ) ν tanh ( β ν 2 ) ( 296 T ) × [ P H 2 O C s 0 ( ν , T ) + P N 2 C f 0 ( ν , T ) ] ,
k ( ν ) = P H 2 O L S π γ obs [ γ obs 2 + ( ν ν 0 δ ν ) 2 ] ,
W / H = [ ( N + 2 ) / 3 ( N 2 ) ] 1 / 2 ,
W = r a [ ( N 2 52 ) / 48 ] 1 / 2 ,
W / H = [ ( N 2 52 ) / 3 ( N 2 ) 2 ] 1 / 2 .

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