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table5 table5

Table 5: Statistics of the GPCP/PACRAIN comparison as shown in Figure 12 and Figure 13 (rows labelled as 'all'). All values are differences between the respective GPCP product, averaged over all grid cells in which PACRAIN stations are available at a given time, and the respective PACRAIN average over all available stations at a given time. Minimum, maximum, and mean values as well as the RMS deviation from the mean value and the mean GPCP uncertainty are in mm/d. Also included are rows where the statistics are given for the subset of temporal instances where a minimum number of PACRAIN stations is exceeded, and for the separate atoll-only comparison where only the subset of PACRAIN stations situated in atolls and the respective GPCP grid cells have been averaged for each time step. Note that these latter '> n PACRAIN stations' rows (with n=100, n=120) provide the statistics to a sub-set of the timeseries to which the 'all' rows provide respective statistics (i.e., filtering out specific points in time, depending on overall station availability), whereas the 'atoll stations only' provide statistics to the separate timeseries that is compiled by averaging over a smaller amount of stations and GPCP grid cells in the first place (i.e., filtering out specific stations/grid cells). Consequently, it is not contradictory that the numbers of values are equal in the 'all' and 'atoll stations only' rows, and that minimum/maximum values are lower/higher in the 'atoll stations only' rows.

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