Streamflow Intensification Driven by the Atlantic Multidecadal Oscillation (AMO) in the Atrato River Basin, Northwestern Colombia

Cerón, Wilmar Loaiza; Kayano, Mary Toshie; Andreoli, Rita V.; Ávila, Álvaro; Canchala, Teresita; Francés, Félix; Rivera, Irma Ayes; Alfonso-Morales, Wilfredo; Souza, Rodrigo Augusto Ferreira de; Carvajal-Escobar, Yesid

doi:10.3390/w12010216

Cited by 18 publications

(4 citation statements)

References 88 publications

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“…Cerón et al [8] investigated the impact of the Atlantic Multidecadal Oscillation (AMO) on the variations in the streamflow in the Atrato River Basin in Northwestern Colombia in the multi-annual period from 1965 to 2016. The cold and warm phases of this oscillation were analyzed.…”

Section: Summary Of the Special Issuementioning

confidence: 99%

Effects of Oceanic–Atmospheric Oscillations on Rivers

Wrzesiński

Sobkowiak

2022

Water

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In this Special Issue, we invited scientists devoted to research on the impacts of the ocean and atmosphere oscillations on the climate and weather patterns, resulting in disturbances in the hydrological phenomena. In our view, the main goal has been successfully reached. This Special Issue received investigations based on measurements, modelling and experiments, related to a wide array of changes in river and lake hydrology on different scales, from local and regional to global approaches. We strongly believe that the readers of journal Water can benefit from these new findings and learn more about effects of the ocean and atmosphere on hydrology using the published papers and share the presented results with the scientific community, policymakers and stakeholders [...]

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Section: Summary Of the Special Issuementioning

confidence: 99%

Effects of Oceanic–Atmospheric Oscillations on Rivers

Wrzesiński

Sobkowiak

2022

Water

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“…One of the factors that influences the climate of the region are the wind currents of the CHOCO, which transports a large content of moisture from the Pacific Ocean into the interior of the country, equivalent to 3,774 m 3 /s of water [37][38][39]. The winds of the Chocó jet stream, as well as the precipitation in the Pacific region, show a monomodal regime, that is, they express the highest figures between September and October and present the lowest values between February and March [40].…”

Section: Scenario Definitionmentioning

confidence: 99%

Characterization of comprehensive drought events associated with the ENSO warm phase through satellite images in the Valle del Cauca Colombia

Flechas

Rodriguez

Escobar

et al. 2020

DYNA

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The Synthesized Drought Index in the Valle del Cauca was evaluated, applying Principal Component Analysis to satellite images that described: Land Surface Temperature, Normalized Difference Vegetation Index and Precipitation. The magnitude of drought represented by this index was identified in the first component and validated with the Quarterly Standardized Precipitation Index (SPI – 3), obtained from 78 weather stations, which achieved correlations of between 0.55 and 0.71 during warm ENSO events. Comprehensive drought in the department was characterized by exhibiting areas of non-drought in the southwest, in the center-south a transition phase from wet to extremely dry, the Inter-Andean Valley showed sectors of severe drought, and to the east, extremely dry areas. Additionally, in a pilot municipality in the driest area of the department, a susceptibility model was implemented to detect areas affected by drought, applying the Analytical Hierarchical Process.

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“…Monsoon rains drive uvial discharge, accelerating erosion and suspended sediment transport [25,26,27] . Climate oscillations such as the El Niño Southern Oscillation (ENSO), North Atlantic Oscillation (NAO), and Paci c Decadal Oscillation (PDO) are macroscale atmospheric patterns, with the capability to in uence regional weather patterns, impacting precipitation, uvial discharge, and ood intensity [28,29] ; thus, they may indirectly force or limit the migration of uvial river channels.…”

Section: Introductionmentioning

confidence: 99%

Climate control on the channel morphodynamics of the Sittaung River, Myanmar

Bisson,

Choi

2024

Preprint

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The spatio-temporal development of a meandering river is controlled by its channel morphodynamics. In regions of rapid channel evolution, understanding the driving factors of meander migration is crucial in forecasting the rate and extent of morphological change. Sediment supply and fluvial discharge are the primary influences on migration rate, however climate oscillations are also integral in regulating migration rate through their control of regional precipitation, as well as the monsoon season of sub-tropical Asia. Despite this, an in-depth investigation into the impact of climate oscillations on meander bend migration remains undocumented. This study presents a satellite-based analysis of multi-decadal climatic forcing on the migration rate of the Sittaung River in Myanmar, through interpretation of the El Niño Southern Oscillation (ENSO). The mode of ENSO exerts significant climatic control on the migration rate of the meandering channels of the Sittaung River, with low-to-average migration rates recorded during dry El Niño events and peak migration rates observed during wet La Niña events. However, this climatic signal may have been obscured by certain local environmental conditions. In cases where meanders faced geological basement, the basement rock inhibited their migration through extension, forcing more rapid migration by way of seaward translation. Consequently, these translating meanders developed to be more elongate, with lower curvatures. Meanders downstream of the approximate tidal limit were less downstream skewed, indicative of tidal modulation, potentially obscuring the impact of fluvially driven climate forcing. Additionally, downstream of a major confluence, the input of sediment and fluvial discharge may have been regulated by upstream anthropogenic activities such as mining and dam construction, leading to greater variability in migration rate downstream of this confluence and further obfuscation of the climate signal.

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Streamflow Intensification Driven by the Atlantic Multidecadal Oscillation (AMO) in the Atrato River Basin, Northwestern Colombia

Cited by 18 publications

References 88 publications

Effects of Oceanic–Atmospheric Oscillations on Rivers

Effects of Oceanic–Atmospheric Oscillations on Rivers

Characterization of comprehensive drought events associated with the ENSO warm phase through satellite images in the Valle del Cauca Colombia

Climate control on the channel morphodynamics of the Sittaung River, Myanmar

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