Evaluation and improvement of an iterative scattering correction scheme for in situ absorption and attenuation measurements

McKee, David and Piskozub, Jacek and Röttgers, Rüdiger and Reynolds, Rick A. (2013) Evaluation and improvement of an iterative scattering correction scheme for in situ absorption and attenuation measurements. Journal of Atmospheric and Oceanic Technology, 30 (7). 1527–1541. ISSN 0739-0572 (https://doi.org/10.1175/JTECH-D-12-00150.1)

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Abstract

The performance of several scattering correction schemes for reflecting-tube absorption and beam attenuation measurements is evaluated with data collected in European shelf seas. Standard scattering correction procedures for absorption measurements perform poorly because of nonzero absorption in the near infrared and wavelength-dependent scattering phase functions. A previously described iterative correction procedure based on Monte Carlo simulations of the Western Environmental Technologies Laboratories (WET Labs) ac-9 and independent estimates of particle backscattering initially performs poorly, but is greatly improved when realistic losses at flow-tube walls are incorporated into the model. The updated Monte Carlo scattering correction provides excellent agreement with independent absorption and attenuation measurements made with a point-source integrating-cavity absorption meter (PSICAM) and a Laser In Situ Scattering and Transmissometer (LISST, Sequoia Scientific), respectively. Implications for historic datasets and requirements for application to future datasets are discussed.

  • Item type:Article
    ID code:45078
    Dates:
    Date
    Event
    July 2013
    Published
    Notes:© Copyright 2013 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act September 2010 Page 2 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a web site or in a searchable database, or other uses of this material, except as exempted by the above statement, requires written permission or a license from the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at (http://www.ametsoc.org/) or from the AMS at 617-227-2425 or copyrights@ametsoc.org.
    Subjects:Science > Physics
    Geography. Anthropology. Recreation > Oceanography
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:08 Oct 2013 09:26
    Last modified:08 Apr 2024 20:48
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/45078
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