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999			_c61770 _d61762
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003			MX-TxCIM
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008			200423s2010||||xxu|||p|op||||00||0|eng|d
022			_a1558-8424
022			_a1558-8432 (Online)
024	8		_ahttps://doi.org/10.1175/2009JAMC2318.1
040			_aMX-TxCIM
041			_aeng
100	1		_aRoca, R. _912654
245	1	0	_aComparing satellite and surface rainfall products over West Africa at meteorologically relevant scales during the AMMA campaign using error estimates
260			_aUSA : _bAmerican Meteorological Society, _c2010.
500			_aPeer review
520			_aMonsoon rainfall is central to the climate of West Africa, and understanding its variability is a challenge for which satellite rainfall products could be well suited to contribute to. Their quality in this region has received less attention than elsewhere. The focus is set on the scales associated with atmospheric variability, and a meteorological benchmark is set up with ground-based observations from the African Monsoon Multidisciplinary Analysis (AMMA) program. The investigation is performed at various scales of accumulation using four gauge networks. The seasonal cycle is analyzed using 10-day-averaged products, the synoptic-scale variability is analyzed using daily means, and the diurnal cycle of rainfall is analyzed at the seasonal scale using a composite and at the diurnal scale using 3-hourly accumulations. A novel methodology is introduced that accounts for the errors associated with the areal–time rainfall averages. The errors from both satellite and ground rainfall data are computed using dedicated techniques that come down to an estimation of the sampling errors associated to these measurements. The results show that the new generation of combined infrared–microwave (IR–MW) satellite products is describing the rain variability similarly to ground measurements. At the 10-day scale, all products reveal high regional and seasonal skills. The day-to-day comparison indicates that some products perform better than others, whereas all of them exhibit high skills when the spectral band of African easterly waves is considered. The seasonal variability of the diurnal scale as well as its relative daily importance is only captured by some products. Plans for future extensive intercomparison exercises are briefly discussed.
546			_aText in English
650		7	_2AGROVOC _912655 _aSatellite observation
650		7	_2AGROVOC _91234 _aRain
650		7	_2AGROVOC _912656 _aMicrowave radiation
650		7	_2AGROVOC _912657 _aInfrared radiation
651		7	_2AGROVOC _91316 _aAfrica
700	1		_912658 _aChambon, P.
700	1		_912659 _aJobard, I.
700	1		_912660 _aKirstetter, P.E.
700	1		_912661 _aGosset, M.
700	1		_912662 _aBergès, J.C.
773	0		_tJournal of Applied Meteorology and Climatology _gv. 49, no. 4, p. 715-731 _dUSA : American Meteorological Society, 2010. _x1558-8424
942			_cJA _n0 _2ddc