@Article{DelahayeKiDuMaViCl:2015:CoGaDa,
author = "Delahaye, Florian and Kirstetter, Pierre-Emmanuel and Dubreuil,
Vincent and Machado, Luiz Augusto Toledo and Vila, Daniel
Alejandro and Clark III, Robert",
affiliation = "{} and {} and {} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "A consistent gauge database for daily rainfall analysis over the
Legal Brazilian Amazon",
journal = "Journal of Hydrology",
year = "2015",
volume = "527",
pages = "292–304",
keywords = "Rainfall variability, geostatistics, rain gauge, spatial
structure, Legal Brazilian Amazon.",
abstract = "Reliable precipitation information provided by rain gauge networks
is invaluable for applications ranging from climatological studies
to validation of remote sensing rainfall estimates. Daily
precipitation data from 235 tipping bucket gauges in the Legal
Brazilian Amazon are quality controlled for the period 19982009 by
comparing precipitation time series from individual rain gauges
with neighboring stations. Within a geostatistical framework,
optimal distances for the comparison between stations are
identified while considering the density of the network and the
spatial structure of the precipitation. The number of rain gauges
used as neighboring rain gauges varies between 2 and 57. Each
gauge station is compared to nearby gauge stations using fourteen
climate and statistical indicators. A proposed variability index
allows for the detection of suspicious precipitation data before
more detailed analysis of the nature of the issue and the time
period of concern in the time series. The internal consistency of
the database is examined through the use of variograms and cross
validation. The sensitivity of the effectiveness of the quality
control procedure to the comparison distance is examined. These
results are positive and this demonstrates that the spatial
structure of daily rainfall is better sampled. The cross
validation confirms that the quality control procedures improved
the consistency of the database. Finally, the spatial consistency
of the rainfall database is assessed through a classification of
the seasonal regimes in the Legal Brazilian Amazon.",
issn = "0022-1694",
targetfile = "Delahaye_A Consistent.pdf",
urlaccessdate = "27 abr. 2024"
}