Detection of thin cirrus from 1.38 μm/0.65 μm reflectance ratio combined with 8.6-11 μm brightness temperature difference

Details Detection of thin cirrus from 1.38 μm/0.65 μm reflectance ratio combined with 8.6-11 μm brightness temperature difference Detection of thin cirrus from 1.38 μm/0.65 μm reflectance ratio combined with 8.6-11 μm brightness temperature difference

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30sasc4r&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 19, pp. ASC 4-1, CiteID 1985, DOI 10.1029/2003GL018135

Physics

9

Meteorology And Atmospheric Dynamics: Radiative Processes, Meteorology And Atmospheric Dynamics: Remote Sensing, Meteorology And Atmospheric Dynamics: Instruments And Techniques

Scientific paper

We developed a new detection scheme for the identification of thin cirrus based on a combination of the 1.38 μm and 0.65 μm reflectance ratio and 8.6-11 μm brightness temperature difference. Results computed from a radiative transfer model as well as data obtained from the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard the Terra satellite were used to demonstrate the applicability of this method for regional mapping of thin cirrus. The mm-wave radar backscatter data, coincident and collocated with MODIS data, available from the DOE's Atmospheric Radiation Measurement (ARM) sites, was employed for validation of the present satellite detection results. In all cases selected, our new method was able to detect the majority of thin cirrus estimated to have optical thickness between 0.1 and 0.9. It also compared favorably to existing detection tests.

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