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Applied Optics

Applied Optics

  • Vol. 40, Iss. 9 — Mar. 20, 2001
  • pp: 1343–1353

Optics InfoBase > Applied Optics > Volume 40 > Issue 9 > Quasi-Specular Model for Calculating the Reflection of Atmospheric-Emitted Infrared Radiation from a Rough Water Surface

Quasi-Specular Model for Calculating the Reflection of Atmospheric-Emitted Infrared Radiation from a Rough Water Surface

Nicholas R. Nalli, William L. Smith, and Bormin Huang

Applied Optics, Vol. 40, Issue 9, pp. 1343-1353        doi:10.1364/AO.40.001343

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  • OCIS Codes:
  • (010.4450) Atmospheric and oceanic optics : Oceanic optics
  • (120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
  • (120.5700) Instrumentation, measurement, and metrology : Reflection
  • (240.6690) Optics at surfaces : Surface waves
  • (290.5880) Scattering : Scattering, rough surfaces

Citation
Nicholas R. Nalli, William L. Smith, and Bormin Huang, "Quasi-Specular Model for Calculating the Reflection of Atmospheric-Emitted Infrared Radiation from a Rough Water Surface," Appl. Opt. 40, 1343-1353 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-9-1343

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Abstract

A numerical model is developed for computation of the reflection of atmospheric-emitted IR radiance from a wind-roughened water body. The model assumes the Kirchhoff approximation for rough surface scattering. This allows application of the postulates of geometrical optics to determine the reflection of rays from an ensemble of wave facets. We performed the hemispherical integration with Gaussian quadrature by using an uplooking fast transmittance model. This calculation is simplified further through the concept of a reflection–diffusivity angle. The model compares favorably with observed radiance spectra obtained from the Marine-Atmospheric Emitted Radiance Interferometer during the Combined Sensor Program research cruise.

© 2001 Optical Society of America

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Author Affiliations

Nicholas R. Nalli, William L. Smith, Bormin Huang

When this research was performed, N. R. Nalli (nick.nalli@noaa.gov) was with the Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison, Madison, Wisconsin 53706. He is now with the Cooperative Institute for Research in the Atmosphere, Colorado State University, while stationed with the NOAA National Environmental Satellite, Data, and Information Service, Washington, D.C. 20233. W. L. Smith is with Atmospheric Sciences, NASA Langley Research Center, Mail Code 401, Hampton, Virginia 23681–0001. B. Huang is with the Space Science and Engineering Center, University of Wisconsin-Madison, Madison, Wisconsin 53706, while stationed at NASA Langley Research Center, Mail Code 401, Hampton, Virginia 23681–0001.

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