@Article{OliveiraBragVilaMora:2015:EvGPRa,
author = "Oliveira, R{\^o}mulo Augusto Juc{\'a} and Braga, Ramon Campos
and Vila, Daniel Alejandro and Morales, Carlos A.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Evaluation of GPROF-SSMI/S rainfall estimates over land during the
Brazilian CHUVA-VALE campaign",
journal = "Atmospheric Research",
year = "2015",
volume = "163",
pages = "102--116",
abstract = "One of the major goals of the CHUVA project (Cloud processes of
tHemain precipitation systems in Brazil: A contribUtion to cloud
resolVingmodeling and to the GPM[GlobAl PrecipitationMeasurement])
is to collect information about the cloud processes of themain
precipitating systems over Brazil in order to evaluate and improve
the quality of satellite-based precipitation estimates. Thus, this
paper evaluates the performance of the Goddard Profiling
Algorithm(GPROF) version 2004 for the Special SensorMicrowave
Imager/Sounder (SSMIS) sensor, carried onboard the
DefenseMeteorological Satellite Program(DMSP) F16, F17 and F18
satellites, for instantaneous rain rates over land by comparing
with other remote sensing based estimates such as X-band dual
polarization rainfall retrievals from the CHUVA Project (named
here X-band CHUVA radar) and TRMM (Tropical Rainfall Measurement
Mission) Precipitation Radar version 7 (PR-V7) precipitation
estimates (named here the 2A25_V7 product) for the CHUVA-VALE
campaign. The analyses were performed on an area within a radius
of 60 km from the X-band CHUVA radar, located at S{\~a}o
Jos{\'e} dos Campos, SP Brazil (centered at 23.2°S and 45.95°W)
and another delimited by 41°W51°Wand 18°S28°S (10° x 10° box).
GPROF showed an overestimate of light/moderate rain rate
intensities,while underestimating the rainfall rates above
10mmh\−1, considering the X-band CHUVA radar as reference.
The same behaviorwas observed when comparedwith the 2A25_V7
database. Through a PDF analysis, GPROFwas found to overestimate
the frequencies of moderate rain rates (between 2 and
10mmh\−1, above 15%), and underestimate the frequencies of
light and high rain rates (b2mmh\−1 and N10mmh\−1,
respectively) when compared to both the X-band CHUVA radar and
2A25_V7 reference databases. The results for the studied region
suggest that GPROF has a relatively good agreement (spatial
distribution and accumulated rainfall), especially for convective
rain cases, due the significant presence of ice scattering.
However, the intensity of light/moderate rains is overestimated.",
issn = "0169-8095",
language = "en",
targetfile = "Oliveira_Evaluation.pdf",
urlaccessdate = "27 abr. 2024"
}