Quantitative Sulphur Dioxide Retrievals from AIRS, MODIS and HIRS (Abstract Only)

A group of algorithms is presented for retrieving lower stratosphere/upper stratosphere sulfur dioxide from the infrared channels of the Moderate Resolution Imaging Spectroradiometer (MODIS), Atmospheric Infrared Sounder (AIRS), and High resolution Infrared Radiation Sounder (HIRS) satellite instruments. The retrieval mechanisms all utilize the same principle of detecting the strength of absorption by the anti-symmetric stretch of the sulfur dioxide molecule centered around 1360 cm(-1), even though the retrieval mechanisms are tailored to the strength of each instrument. AIRS represents this region of the infrared spectrum with over 130 channels. MODIS provides a broadband measure of the 7.34 micrometer absorption feature and also up to 4 measurements a day from two satellites. The retrievals are not as accurate as those from AIRS. HIRS also offers broadband measurements and a lower spatial resolution than MODIS. However, these data are complemented by simultaneous measurements of atmospheric moisture, temperature, clouds ozone, and radioactive parameters and the data span almost 25 years.

  • Corporate Authors:

    Federal Coordinator, Meteorological Services & Support Research

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  • Authors:
    • Prata, Fred
    • Bernardo, Cirilo
  • Conference:
  • Publication Date: 2004-11

Language

  • English

Media Info

  • Media Type: Print
  • Pagination: 1p
  • Monograph Title: Proceedings of the 2nd International Conference on Volcanic Ash and Aviation Safety, June 21-24, 2004, Alexandria, Virginia

Subject/Index Terms

Filing Info

  • Accession Number: 01000857
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 10 2005 3:29PM