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January 1, 2000Monthly Weather Review17 citationsOpen Access

Surface Rainfall–Cold Cloud Fractional Coverage Relationship in TOGA COARE: A Function of Vertical Wind Shear

TSThomas R. SaxenSRSteven A. Rutledge

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Abstract

Shipboard radar-derived rain rates and satellite-observed IR brightness temperatures have been used to examine the relationship between cold cloud fractional coverage for brightness temperatures 235 K and areally averaged surface rainfall during the Tropical Ocean-Global Atmosphere Coupled Ocean-Atmosphere Response Experiment (TOGA COARE). A nearly linear relationship was observed with a ratio of mean rain rate to fraction cold cloud coverage of approximately 1 mm h 1 . This is in contrast to the GOES precipitation index (GPI) methodology, which assumes a proportionality (GPI slope coefficient) of 3 mm h 1 .

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Saxen et al. (2000) studied this question.

synapsesocial.com/papers/6a1f219dec7bca7c07553228https://doi.org/10.1175/1520-0493(2000)128<0407:srccfc>2.0.co;2
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