HR: 15:30h
AN: A54A-01    [Abstracts]
TI: Development of Long-term Datasets from Satellite BUV Instruments - The
AU: * Bhartia, P K
EM: pawan.bhartia@nasa.gov
AF: NASA Goddard Space Flight Cntr, Mail Code 613.3, Greenbelt, MD 20771 United States
AU: Taylor, S
EM: steven_taylor@ssaihq.com
AF: Science Systems and Applications Inc, x, Lanham, MD 20706 United States
AU: Jaross, G
EM: jaross@qhearts.gsfc.nasa.gov
AF: Science Systems and Applications Inc, x, Lanham, MD 20706 United States
AB: The first BUV instrument was launched in April 1970 on NASA's Nimbus-4 satellite. More than a dozen instruments, broadly based on the same principle, but using very different technologies, have been launched in the last 35 years on NASA, NOAA, Japanese and European satellites. In this paper we describe the basic principles of the "soft" calibration approach that we have successfully applied to the data from many of these instruments to produce a consistent long-term record of total ozone, ozone profile and aerosols. This approach is based on using accurate radiative transfer models and assumed/known properties of the atmosphere in ultraviolet to derive calibration parameters. Although the accuracy of the results inevitably depends upon how well the assumed atmospheric properties are known, the technique has several built-in cross-checks that improve the robustness of the method. To develop further confidence in the data the soft calibration technique can be combined with data collected from few well-calibrated ground-based instruments. We will use examples from past and present BUV instruments to show how the method works.
DE: 0325 Evolution of the atmosphere
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2005 Joint Assembly