@Article{ChanchalaCFCAKACS:2020:StVaCo,
author = "Chanchala, Teresita and Cer{\'o}n, Wilmar Loaiza and
Franc{\'e}s, F{\'e}lix and Carvajal-Escobar, Yesid and Andreoli,
Rita Val{\'e}ria and Kayano, Mary Toshie and Alfonso-Morales,
Wilfredo and Caicedo-Bravo, Eduardo and Souza, Rodrigo Augusto
Ferreira de",
affiliation = "{Universidad del Valle} and {Universidad del Valle} and
{Universitat Polit{\`e}cnica de Val{\`e}ncia} and {Universidad
del Valle} and {Universidade do Estado do Amazonas (UEA)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidad del Valle} and {Universidad del Valle} and
{Universidade do Estado do Amazonas (UEA)}",
title = "Streamflow variability in colombian pacific basins and their
teleconnections with climate indices",
journal = "Water (Switzerland)",
year = "2020",
volume = "12",
number = "2",
pages = "e526",
month = "Feb.",
keywords = "Colombian Pacific, principal component analysis, streamflow
variability, climate indices, wavelet analysis.",
abstract = "Oceanic-atmospheric phenomena of different time scales
concurrently might affect the streamflow in several basins around
the world. The Atrato River Basin (ARB) and Pat{\'{\i}}a River
Basin (PRB) of the Colombian Pacific region are examples of such
basins. Nevertheless, the relations between the streamflows in the
ARB and PRB and the oceanic-atmospheric factors have not been
examined considering different temporal scales. Hence, this
article studies the relations of the climate indices and the
variability of the streamflows in the ARB and PRB at interannual
and decadal timescales. To this, the streamflow variability modes
were obtained from the principal component analysis (PCA);
furthermore, their linear dependence with indices of the El
Niņo/Southern Oscillation (ENSO), precipitation (PRP), the Choco
low-level jet (CJ), and other indices were quantified through (a)
Pearson and Kendalls tau correlations, and (b) wavelet transform.
The PCA presented a single significant mode for each basin, with
an explained variance of around 80%. The correlation analyses
between the PC1s of the ARB and PRB, and the climate indices
showed significant positive (negative) high correlations with PRP,
CJ, and Southern Oscillation Index (SOI) (ENSO indices). The
wavelet coherence analysis showed significant coherencies between
ENSO and ARB: at interannual (27 years) and decadal scale (814),
preferably with the sea surface temperature (SST) in the east and
west Tropical Pacific Ocean (TPO). For PRB with the SST in the
central and western regions of the TPO in the interannual (48
years) and decadal (814 years) scales, the decreases (increases)
in streamflow precede the El Niņo (La Niņa) events. These results
indicate multiscale relations between the basins streamflow and
climate phenomena not documented in previous works, relevant to
forecast the extreme flow events in the Colombian Pacific rivers
and for planning and implementing strategies for the sustainable
use of water resources in the basins studied.",
doi = "10.3390/w12020526",
url = "http://dx.doi.org/10.3390/w12020526",
issn = "2073-4441",
language = "en",
targetfile = "chanchala_streamflow.pdf",
urlaccessdate = "27 abr. 2024"
}