La Niña Event 2010–2011: Hydroclimatic Effects and Socioeconomic Impacts in Colombia

Vargas, Germán; Hernández, Yolanda; Pabón, José Daniel

doi:10.1007/978-3-319-56469-2_15

Cited by 11 publications

(8 citation statements)

References 13 publications

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“…However, in recent years, La Mojana floodplain has suffered multiple cases of severe flooding. The latest flood, a La Niña event during the second semester of 2010, followed large floods in 2005, 2007, and 2008 (Rodríguez‐Gaviria & Botero‐Fernández, ; Vargas et al, ). Owing to the flooding of a vast area, more than 200,000 people were affected, including traditional fishing, agriculture, and livestock communities.…”

Section: Methodsmentioning

confidence: 99%

“…Moreover, floods caused by the overflowing of the rivers, which collect wastes containing toxic metals from surrounding mining areas, have led to crop losses and severe pollution (Marrugo, Benítez, Olivero, Lans, & Vazquez, ; Marrugo‐Negrete, Olivero Verbel, Lans Ceballos, & Norberto Benitez, ; Marrugo‐Negrete, Pinedo‐Hernández, & Díez, ; OCHA, ; Pinedo‐Hernández, Marrugo‐Negrete, & Díez, ). At present, the dry season lasts longer, and the rains are torrential, causing floods that can occasionally be severe, as in the 2010–2011 La Niña phenomenon, when several areas such as La Mojana were completely flooded for almost 2 years (Vargas, Hernández, & Pabón, ).…”

Section: Introductionmentioning

confidence: 99%

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Flood‐induced metal contamination in the topsoil of floodplain agricultural soils: A case‐study in Colombia

et al. 2019

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Anomalously cold conditions in the tropical Pacific, related to a strong La Niña event, affected numerous countries in 2010. Several areas in Colombia were severely impacted, including agricultural fields in La Mojana floodplain that were completely flooded for almost 2 years. This study assesses the effects of flooding on the levels, spatial distribution, and sources of trace metals in 222 agricultural topsoils of this floodplain. Our results show that mean concentrations of Cu 48.4 mg kg −1 (11-103 mg kg −1 ), Zn 79.2 mg kg −1 (6-207 mg kg −1 ), Ni 58.1 mg kg −1 (17-101 mg kg −1 ), Pb 3.2 mg kg −1 (0.13-14 mg kg −1 ), Cd 0.56 mg kg −1 (0.05-1.4 mg kg −1 ), Mn 411 mg kg −1 (55-1,277 mg kg −1 ), and Hg 0.10 mg kg −1 (0.05-0.22 mg kg −1 ) were higher than the world's averages. Topsoils revealed different degrees of pollution depending on the metal, of which Pb was the most problematic element, with 82% of the soil samples classified as heavily contaminated. Principal component analysis suggests that soil contamination was primarily derived from poor agricultural practices and contaminated river overflows from upstream mining areas. Our results show that an extreme flood event might increase the bioavailability of metals (especially Pb) for crops in most (66%) of the agricultural soils, posing a potential threat to human health.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flood‐induced metal contamination in the topsoil of floodplain agricultural soils: A case‐study in Colombia

et al. 2019

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“…The hydroclimatology of the basin is profoundly influenced by the El Niño -Southern Oscillation (ENSO) phenomenon (Poveda and Mesa, 1996). Widespread flood events caused by the La Niña event of 2010-2011 affected some four million Colombians and caused economic losses estimated at US 7.8 billion (Hoyos et al, 2013;Vargas et al, 2018), while the severe droughts caused by the El Niño event of 2015-2016 had quite severe consequences, including water shortages 5 https://doi.org/10.5194/hess-2021-323 Preprint. Discussion started: 30 July 2021 c Author(s) 2021.…”

Section: Study Areamentioning

confidence: 99%

Benchmarking global hydrological and land surface models against GRACE in a medium-size tropical basin

Chavarría

Werner

Salazar

2021

Preprint

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Abstract. The increasing reliance on global models to address climate and human stresses on hydrology and water resources underlines the necessity for assessing the reliability of these models. In river basins where availability of gauging information from terrestrial networks is poor, models are increasingly proving to be a powerful tool to support hydrological studies and water resources assessments. However, the lack of in-situ data hampers rigorous performance assessment, particularly in tropical basins where discordance between global models is considerable. Remotely sensed data of the terrestrial water storage obtained from the GRACE satellite mission can, however, provide independent data against which the performance of such global models can be evaluated. Here we assess the reliability of six global hydrological models (GHM) and four land surface models (LSM) available at two resolutions. We compare Total Water Storage (TWS)'s modelled dynamics with TWS derived from GRACE data over the Magdalena-Cauca basin in Colombia, a medium-sized tropical basin with a comparatively well-developed gauging network. We benchmark monthly TWS changes from each model against GRACE data for 2002–2014, evaluating monthly variability, seasonality, and long-term trends. TWS changes are evaluated at basin level, as well as for selected sub-basins with decreasing basin size. We find that the models poorly represent TWS for the monthly series, but they improve in representing seasonality and long-term trends. The high-resolution GHM W3RA model forced by the Multi-Source Weighted Ensemble Precipitation (MSWEP) is most consistent at providing the best performance at almost all basin scales, with higher-resolution models generally outperforming lower-resolution counterparts. This is, however, not the case for all models. Results highlight the importance of basin scale in the representation of TWS by the models, as with decreasing basin area, we note a commensurate decrease in the model performance. A marked reduction in performance is found for basins smaller than 60,000 km2. Although uncertainties in the GRACE measurement increase for smaller catchments, the models are clearly challenged in representing the complex hydrological processes of this tropical basin, as well as human influences. We conclude that GRACE provides a valuable dataset to benchmark global simulations of TWS change, in particular for those models with explicit representation of the internal dynamics of hydrological stocks, offering useful information for the continued improvement of large-scale hydrological and land-surface models of the global terrestrial water cycle, including in tropical basins.

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“…Climate change and variability alter the normal rainfall cycle causing floods of agricultural land and affecting crop production [5]. In Colombia, climate variability phenomena, such as the "La Niña" phenomenon, are characterized by an increase in rainfall that enhances the probability of floods [6,7]. In 2010, La Niña phenomenon produced an increase in rainfall, exceeding historical averages and causing a decrease in agricultural production from 7888 to 1515 t in Cundinamarca, one of the main producer departments of the country [4,7,8].…”

Section: Introductionmentioning

confidence: 99%

Foliar Glycine Betaine or Hydrogen Peroxide Sprays Ameliorate Waterlogging Stress in Cape Gooseberry

Castro-Duque

Chávez-Arias

Restrepo-Díaz

2020

Plants

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Exogenous glycine betaine (GB) or hydrogen peroxide (H2O2) application has not been explored to mitigate waterlogging stress in Andean fruit trees. The objective of this study was to evaluate foliar GB or H2O2 application on the physiological behavior of Cape gooseberry plants under waterlogging. Two separate experiments were carried out. In the first trial, the treatment groups were: (1) plants without waterlogging and with no foliar applications, (2) plants with waterlogging and without foliar applications, and (3) waterlogged plants with 25, 50, or 100 mM of H2O2 or GB, respectively. The treatments in the second trial were: (1) plants without waterlogging and with no foliar applications, (2) plants with waterlogging and without foliar applications, and (3) waterlogged plants with 100 mM of H2O2 or GB, respectively. In the first experiment, plants with waterlogging and with exogenous GB or H2O2 applications at a dose of 100 mM showed higher leaf water potential (−0.5 Mpa), dry weight (1.0 g), and stomatal conductance (95 mmol·m−2·s−1) values. In the second experiment, exogenously supplied GB or H2O2 also increased the relative growth rate, and leaf photosynthesis mitigating waterlogging stress. These results show that short-term GB or H2O2 supply can be a tool in managing waterlogging in Cape gooseberry.

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La Niña Event 2010–2011: Hydroclimatic Effects and Socioeconomic Impacts in Colombia

Cited by 11 publications

References 13 publications

Flood‐induced metal contamination in the topsoil of floodplain agricultural soils: A case‐study in Colombia

Flood‐induced metal contamination in the topsoil of floodplain agricultural soils: A case‐study in Colombia

Benchmarking global hydrological and land surface models against GRACE in a medium-size tropical basin

Foliar Glycine Betaine or Hydrogen Peroxide Sprays Ameliorate Waterlogging Stress in Cape Gooseberry

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