@Article{AmaralBVPVPBSPMGD:2018:AsGrDa,
author = "Amaral, Lia Martins Costa do and Barbieri, Stefano and Vila,
Daniel Alejandro and Puca, Silvia and Vulpiani, Gianfranco and
Panegrossi, Giulia and Biscaro, Thiago Souza and San{\`o}, Paolo
and Petracca, Marco and Marra, Anna Cinzia and Gosset, Marielle
and Dietrich, Stefano",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {University
of L’Aquila} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {Italian Civil Protection Department} and {Italian
Civil Protection Department} and {Institute of Atmospheric
Sciences and Climate (ISAC) National Research Council of Italy
(CNR)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Institute of Atmospheric Sciences and Climate (ISAC) National
Research Council of Italy (CNR)} and {Italian Civil Protection
Department} and {Institute of Atmospheric Sciences and Climate
(ISAC) National Research Council of Italy (CNR)} and {Institute of
Research for Development (IRD)} and {Institute of Atmospheric
Sciences and Climate (ISAC) National Research Council of Italy
(CNR)}",
title = "Assessment of ground-reference data and validation of the H-SAF
precipitation products in Brazil",
journal = "Remote Sensing",
year = "2018",
volume = "10",
number = "11",
pages = "e1743",
month = "Nov.",
keywords = "rain gauges, radar, quality indexes, satellite rainfall
retrievals, validation.",
abstract = "The uncertainties associated with rainfall estimates comprise
various measurement scales: from rain gauges and ground-based
radars to the satellite rainfall retrievals. The quality of
satellite rainfall products has improved significantly in recent
decades; however, such algorithms require validation studies using
observational rainfall data. For this reason, this study aims to
apply the H-SAF consolidated radar data processing to the X-band
radar used in the CHUVA campaigns and apply the well established
H-SAF validation procedure to these data and verify the quality of
EUMETSAT H-SAF operational passive microwave precipitation
products in two regions of Brazil (Vale do Para{\'{\i}}ba and
Manaus). These products are based on two rainfall retrieval
algorithms: the physically based Bayesian Cloud Dynamics and
Radiation Database (CDRD algorithm) for SSMI/S sensors and the
Passive microwave Neural network Precipitation Retrieval algorithm
(PNPR) for cross-track scanning radiometers (AMSU-A/AMSU-B/MHS
sensors) and for the ATMS sensor. These algorithms, optimized for
Europe, Africa and the Southern Atlantic region, provide estimates
for the MSG full disk area. Firstly, the radar data was treated
with an overall quality index which includes corrections for
different error sources like ground clutter, range distance,
rain-induced attenuation, among others. Different polarimetric and
non-polarimetric QPE algorithms have been tested and the Vulpiani
algorithm (hereafter, Rq2Vu15) presents the best precipitation
retrievals when compared with independent rain gauges. Regarding
the results from satellite-based algorithms, generally, all
rainfall retrievals tend to detect a larger precipitation area
than the ground-based radar and overestimate intense rain rates
for the Manaus region. Such behavior is related to the fact that
the environmental and meteorological conditions of the Amazon
region are not well represented in the algorithms. Differently,
for the Vale do Para{\'{\i}}ba region, the precipitation
patterns were well detected and the estimates are in accordance
with the reference as indicated by the low mean bias values.",
doi = "10.3390/rs10111743",
url = "http://dx.doi.org/10.3390/rs10111743",
issn = "2072-4292",
language = "en",
targetfile = "amaral-assessment.pdf",
urlaccessdate = "27 abr. 2024"
}