%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Russell, B.
%A Williams, E. R.
%A Gosset, Marielle
%A Cazenave, Frédéric
%A Descroix, Luc
%A Guy, N.
%A Lebel, Thierry
%A Ali, A.
%A Metayer, F.
%A Quantin, G.
%T Radar/rain-gauge comparisons on squall lines in Niamey, Niger for the AMMA
%D 2010
%L fdi:010049452
%G ENG
%J Quarterly Journal of the Royal Meteorological Society
%@ 0035-9009
%K C-band radar ; rainfall ; Z(e) - R relation ; attenuation
%M ISI:000276806300020
%N s1
%P 289-303
%R 10.1002/qj.548
%U https://www.documentation.ird.fr/hor/fdi:010049452
%> https://www.documentation.ird.fr/intranet/publi/2010/05/010049452.pdf
%V 136
%W Horizon (IRD)
%X Massachusetts Institute of Technology C-band observations are integrated with rainfall measurements from an extensive network of gauges in Niamey. Niger. West Africa. for the African Monsoon and Multidisciplinary Analysis (AMMA) The large number of gauges available enabled Z(e) - R power-law relationships for the convective and stratiform regions of individual squall lines The Z(e) - R relationships based solely on radar measurements directly vet the gauges were developed for the estimate of rainfall and attendant latent heat release (by other AMMA investigators) where gauges were unavailable The low prefactor values of the Z(e) - R power laws relative to like values for Z - R disdrometer power laws have contributions of order 1-2 dB from the use of the lowest beam tilt (0 57 degrees) and similar to 1-2 dB by the radar reading low (The sphere calibration and die Tropical Rainfall Measuring Mission TRMM - radar calibration me inconsistent at the 1-2 dB level for unknown reasons) Radar/gauge comparisons are also shown lot individual storms Accurate, unbiased results for the convective regime require adjustment of the radar-to-gauge radials for attenuation Beam filling problems and aliasing issues can often be identified in the case of out points Copyright (C) 2010 Royal Meteorological Society
%$ 021 ; 032