Comparison of two satellite-based rainfall algorithms using pacific atoll raingage data

Journal Article · Mon Feb 01 04:00:00 EST 1993 · Journal of Applied Meteorology; (United States)

DOI:https://doi.org/10.1175/1520-0450(1993)032<0411:COTSBR>2.0.CO;2· OSTI ID:6729929

Morrissey, M L ^[1]; Greene, J S ^[2]

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1. Univ. of Hawaii, Honolulu (United States)
2. Univ. of Delaware, Newark (United States)

Rainfall estimates for two simple satellite-based rainfall algorithms are verified over the tropical Pacific using a new method that incorporates sparsely distributed raingages. The resulting linear regression relationship between monthly areal rainfall and the highly reflective cloud index agrees with earlier results. However, the GOES precipitation index (GPI), which was calibrated using radar rainfall data obtained from the eastern tropical Atlantic, produces biased areal rainfall estimates over most of the tropical Pacific. However, its precision is greater than the highly reflective cloud index, perhaps due to the GPI's larger spatial dimensions. With the incorporation of calibration coefficients determined in this study. the GPI will produce unbiased estimates of areal rainfall for the tropical Pacific region.

• OSTI ID: 6729929
• Journal Information: Journal of Applied Meteorology; (United States), Journal Name: Journal of Applied Meteorology; (United States) Vol. 32:2; ISSN JOAMEZ; ISSN 0894-8763
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540110*
ALGORITHMS
ATMOSPHERIC PRECIPITATIONS
CLIMATE MODELS
CLOUD COVER
COMPARATIVE EVALUATIONS
DATA
EVALUATION
INFORMATION
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
NUMERICAL DATA
PACIFIC OCEAN
RADAR
RAIN
RANGE FINDERS
SATELLITES
SEAS
STATISTICAL DATA
STATISTICAL MODELS
SURFACE WATERS
TROPICAL REGIONS