@Article{GarciaKaya:2009:DeOnDa,
author = "Garcia, S{\^a}mia R. and Kayano, Mary Toshie",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
title = "Determination of the onset dates of the rainy season in central
Amazon with equatorialy antisymetric outgoing longwave radiation",
journal = "Theoretical and Applied Climatology",
year = "2009",
volume = "97",
number = "3-4",
pages = "361--372",
month = "Aug",
keywords = "Monsoon, precipitation, circulation, hemiosphere, South America.",
abstract = "The present work provides a new methodology to determine onset
dates of the rainy season (ONR) in central Amazon (CAM) using the
antisymmetric in relation to the equator outgoing longwave
radiation (OLR) (AOLR) data, for the 19792006 period. Spatial
averages of the AOLR () over the CAM for the ONR periods are
obtained. These periods correspond to 25 pentads centered on the
mean pentad for the ONR. The sign changes from positive to
negative of the for the ONR periods indicate the transition from
dry to wet season. Composites of several variables are done for
pentads before and after the ONR dates. These composites show
physically consistent features. The potential of the time series
as an index for monitoring tasks is analyzed. The results here
show that the for the ONR period captures the transition from dry
to wet conditions in the CAM area during 2006. The advantages of
this method are discussed. The new simple method proposed here
seems to be efficient in determining the ONR in the CAM.",
doi = "10.1007/s00704-008-0080-y",
url = "http://dx.doi.org/10.1007/s00704-008-0080-y",
issn = "0177-798X",
language = "en",
targetfile = "determination.pdf",
urlaccessdate = "25 abr. 2024"
}