Hydroclimatic change disparity of Peruvian Pacific drainage catchments
Peruvian Pacific drainage catchments only benefit from 2% of the total national available freshwater while they concentrate almost 50% of the population of the country. This situation is likely to lead a severe water scarcity and also constitutes an obstacle to economic development. Catchment runoff fluctuations in response to climate variability and/or human activities can be reflected in extreme events, representing a serious concern (like floods, erosion, droughts) in the study area. To document this crucial issue for Peru, we present here an insightful analysis of the water quantity resource variability of this region, exploring the links between this variability and climate and/or anthropogenic pressure. We first present a detailed analysis of the hydroclimatologic variability at annual timescale and at basin scale over the 1970–2008 period. In addition to corroborating the influence of extreme El Niño events over precipitation and runoff in northern catchments, a mean warming of 0.2 °C per decade over all catchments was found. Also, higher values of temperature and potential and actual evapotranspiration were found over northern latitudes. We chose to apply the Budyko-Zhang framework that characterizes the water cycle as a function of climate only, allowing the identification of catchments with significant climatic and anthropogenic influence on water balance. The Budyko-Zhang methodology revealed that 11 out of 26 initial catchments are characterized by low water balance disparity related to minor climatic and anthropogenic influence. These 11 catchments were suitable for identifying catchments with contrasting change in their hydroclimatic behavior using the Budyko trajectories. Our analysis further reveals that six hydrological catchment responses can be characterized by high sensitivity to climate variability and land use changes.
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Format: | info:eu-repo/semantics/article biblioteca |
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Springer-Verlag Wien
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Subjects: | Annual variation, Catchment, Climate Variation, Drainage Basin, Hydrological response, Land use change, Resource scarcity, Timescale, Cambio Climático, Hidrometeorología, |
Online Access: | https://hdl.handle.net/20.500.12542/43 |
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dig-senamhi-pe-20.500.12542-432024-08-19T19:30:32Z Hydroclimatic change disparity of Peruvian Pacific drainage catchments Rau, P. Bourrel, L. Labat, D. Frappart, F. Ruelland, D. Lavado-Casimiro, W. Dewitte, Boris Felipe-Obando, Oscar Annual variation Catchment Climate Variation Drainage Basin Hydrological response Land use change Resource scarcity Timescale Cambio Climático Hidrometeorología Peruvian Pacific drainage catchments only benefit from 2% of the total national available freshwater while they concentrate almost 50% of the population of the country. This situation is likely to lead a severe water scarcity and also constitutes an obstacle to economic development. Catchment runoff fluctuations in response to climate variability and/or human activities can be reflected in extreme events, representing a serious concern (like floods, erosion, droughts) in the study area. To document this crucial issue for Peru, we present here an insightful analysis of the water quantity resource variability of this region, exploring the links between this variability and climate and/or anthropogenic pressure. We first present a detailed analysis of the hydroclimatologic variability at annual timescale and at basin scale over the 1970–2008 period. In addition to corroborating the influence of extreme El Niño events over precipitation and runoff in northern catchments, a mean warming of 0.2 °C per decade over all catchments was found. Also, higher values of temperature and potential and actual evapotranspiration were found over northern latitudes. We chose to apply the Budyko-Zhang framework that characterizes the water cycle as a function of climate only, allowing the identification of catchments with significant climatic and anthropogenic influence on water balance. The Budyko-Zhang methodology revealed that 11 out of 26 initial catchments are characterized by low water balance disparity related to minor climatic and anthropogenic influence. These 11 catchments were suitable for identifying catchments with contrasting change in their hydroclimatic behavior using the Budyko trajectories. Our analysis further reveals that six hydrological catchment responses can be characterized by high sensitivity to climate variability and land use changes. 2017-08-23 info:eu-repo/semantics/article https://hdl.handle.net/20.500.12542/43 eng info:eu-repo/semantics/openAccess Atribución-NoComercial-SinDerivadas 3.0 Estados Unidos de América application/pdf application/pdf Springer-Verlag Wien Servicio Nacional de Meteorología e Hidrología del Perú Repositorio Institucional - SENAMHI |
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Annual variation Catchment Climate Variation Drainage Basin Hydrological response Land use change Resource scarcity Timescale Cambio Climático Hidrometeorología Annual variation Catchment Climate Variation Drainage Basin Hydrological response Land use change Resource scarcity Timescale Cambio Climático Hidrometeorología |
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Annual variation Catchment Climate Variation Drainage Basin Hydrological response Land use change Resource scarcity Timescale Cambio Climático Hidrometeorología Annual variation Catchment Climate Variation Drainage Basin Hydrological response Land use change Resource scarcity Timescale Cambio Climático Hidrometeorología Rau, P. Bourrel, L. Labat, D. Frappart, F. Ruelland, D. Lavado-Casimiro, W. Dewitte, Boris Felipe-Obando, Oscar Hydroclimatic change disparity of Peruvian Pacific drainage catchments |
description |
Peruvian Pacific drainage catchments only benefit from 2% of the total national available freshwater while they concentrate almost 50% of the population of the country. This situation is likely to lead a severe water scarcity and also constitutes an obstacle to economic development. Catchment runoff fluctuations in response to climate variability and/or human activities can be reflected in extreme events, representing a serious concern (like floods, erosion, droughts) in the study area. To document this crucial issue for Peru, we present here an insightful analysis of the water quantity resource variability of this region, exploring the links between this variability and climate and/or anthropogenic pressure. We first present a detailed analysis of the hydroclimatologic variability at annual timescale and at basin scale over the 1970–2008 period. In addition to corroborating the influence of extreme El Niño events over precipitation and runoff in northern catchments, a mean warming of 0.2 °C per decade over all catchments was found. Also, higher values of temperature and potential and actual evapotranspiration were found over northern latitudes. We chose to apply the Budyko-Zhang framework that characterizes the water cycle as a function of climate only, allowing the identification of catchments with significant climatic and anthropogenic influence on water balance. The Budyko-Zhang methodology revealed that 11 out of 26 initial catchments are characterized by low water balance disparity related to minor climatic and anthropogenic influence. These 11 catchments were suitable for identifying catchments with contrasting change in their hydroclimatic behavior using the Budyko trajectories. Our analysis further reveals that six hydrological catchment responses can be characterized by high sensitivity to climate variability and land use changes. |
format |
info:eu-repo/semantics/article |
topic_facet |
Annual variation Catchment Climate Variation Drainage Basin Hydrological response Land use change Resource scarcity Timescale Cambio Climático Hidrometeorología |
author |
Rau, P. Bourrel, L. Labat, D. Frappart, F. Ruelland, D. Lavado-Casimiro, W. Dewitte, Boris Felipe-Obando, Oscar |
author_facet |
Rau, P. Bourrel, L. Labat, D. Frappart, F. Ruelland, D. Lavado-Casimiro, W. Dewitte, Boris Felipe-Obando, Oscar |
author_sort |
Rau, P. |
title |
Hydroclimatic change disparity of Peruvian Pacific drainage catchments |
title_short |
Hydroclimatic change disparity of Peruvian Pacific drainage catchments |
title_full |
Hydroclimatic change disparity of Peruvian Pacific drainage catchments |
title_fullStr |
Hydroclimatic change disparity of Peruvian Pacific drainage catchments |
title_full_unstemmed |
Hydroclimatic change disparity of Peruvian Pacific drainage catchments |
title_sort |
hydroclimatic change disparity of peruvian pacific drainage catchments |
publisher |
Springer-Verlag Wien |
url |
https://hdl.handle.net/20.500.12542/43 |
work_keys_str_mv |
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