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Global Estimation of Rainfall: Certain Methodological Issues
Conference proceeding

Global Estimation of Rainfall: Certain Methodological Issues

Witold F Krajewski
AIP Conference Proceedings, Vol.277, pp.180-192
1992
DOI: 10.1063/1.43896

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Abstract

Various methodological and implementational factors affecting the accuracy of estimates of global rainfall on the climatological scale are examined. The strategies are evaluated based on monthly precipitation accumulation data obtained from a 2.5 degree by 2.5 degree grid. The data used in the analysis include both in-situ observations and values derived from satellite-measured radiances. The uncertainty analysis measures needed to properly incorporate the satellite-based estimates are detailed. Spatial interpolation of random fields can be used to account for uncertainties in the data obtained from point observations. For the satellite-based technique, both cross-validation and self-consistent uncertainty propagation can be used.

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