@Article{RozanteMorGonVilMor:2010:TeVaOv,
author = "Rozante, Jos{\'e}Roberto and Moreira, Demerval Soares and de
Goncalves, Luis Gustavo G. and Vila, Daniel A. and Moreira,
Demerval Soares",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Combining TRMM and Surface Observations of Precipitation:
Technique and Validation Over South America",
journal = "Weather and Forecasting",
year = "2010",
volume = "25",
number = "3",
pages = "885--894",
keywords = "Precipitation, TRMM, Validation.",
abstract = "The measure of atmospheric model performance is highly dependent
on the quality of the observations used in the evaluation process.
In the particular case of operational forecast centers,
large-scale datasets must be made available in a timely manner for
continuous assessment of model results. Numerical models and
surface observations usually work at distinct spatial scales
(i.e., areal average in a regular grid versus point measurements),
making direct comparison difficult. Alternatively, interpolation
methods are employed for mapping observational data to regular
grids and vice versa. A new technique (hereafter called MERGE) to
combine Tropical Rainfall Measuring Mission (TRMM) satellite
precipitation estimates with surface observations over the South
American continent is proposed and its performance is evaluated
for the 2007 summer and winter seasons. Two different approaches
for the evaluation of the performance of this product against
observations were tested: a cross-validation subsampling of the
entire continent and another subsampling of only areas with sparse
observations. Results show that over areas with a high density of
observations, theMERGEtechniques performance is equivalent to that
of simply averaging the stations within the grid boxes. However,
over areas with sparse observations, MERGE shows superior
results.",
doi = "10.1175/2010WAF2222325.1",
url = "http://dx.doi.org/10.1175/2010WAF2222325.1",
issn = "0882-8156",
label = "lattes: 0648767431075703 5 RozanteMorGonVilMor:2010:TeVaOv",
language = "en",
targetfile = "Rozante_combining.pdf",
urlaccessdate = "03 maio 2024"
}