Attribution of the river flow growth in the Plata Basin

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A regression approach was used to quantitatively estimate the attribution of the notable growth in the river flows of the Plata Basin during 1960-1999. The study was conducted in seven large basins that account for most of the Plata River discharge. Annual rainfall integrated over each basin and ann...

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Autores principales:	Doyle, M.E., Barros, V.R.
Formato:	Artículo publishedVersion
Lenguaje:	Inglés
Publicado:	2011
Materias:	Land use change Plata Basin Precipitation River flow Trends Annual rainfall Land-use change Natural forests Northern basins Paraguay Precipitation trends River discharge Three phasis Total rainfall Uruguay Atmospheric pressure Deforestation Evaporation Nickel compounds Phase transitions Precipitation (chemical) Rain Rivers Stream flow Land use El Nino-Southern Oscillation evaporation land use change precipitation (climatology) river discharge river flow streamflow Land Use Nickel Compounds Stream Flow Brazil Paraguay Basin Parana Rio de la Plata Glycine max
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_08998418_v31_n15_p2234_Doyle
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	paperaa:paper_08998418_v31_n15_p2234_Doyle2023-06-12T16:48:32Z Attribution of the river flow growth in the Plata Basin Int. J. Climatol. 2011;31(15):2234-2248 Doyle, M.E. Barros, V.R. Land use change Plata Basin Precipitation River flow Trends Annual rainfall Land-use change Natural forests Northern basins Paraguay Plata Basin Precipitation trends River discharge River flow Three phasis Total rainfall Trends Uruguay Atmospheric pressure Deforestation Evaporation Nickel compounds Phase transitions Precipitation (chemical) Rain Rivers Stream flow Land use El Nino-Southern Oscillation evaporation land use change precipitation (climatology) river discharge river flow streamflow Deforestation Evaporation Land Use Nickel Compounds Precipitation Rain Rivers Stream Flow Brazil Paraguay Basin Parana Rio de la Plata Glycine max A regression approach was used to quantitatively estimate the attribution of the notable growth in the river flows of the Plata Basin during 1960-1999. The study was conducted in seven large basins that account for most of the Plata River discharge. Annual rainfall integrated over each basin and annual river flows at their closing points were used for the analysis. The contribution of rainfall changes during each of the three phases of El Niño-Southern Oscillation to total rainfall change in these basins was also calculated. The two main drivers for the generalized growth of the river flows were the increased precipitation and the decreased evaporation attributable to land use change, including deforestation of natural forest and crop switch from sugarcane and coffee trees to soybean. Other evaporation changes played a minor role. There was a north-south gradient in the respective importance of each driver, with land use change having greater weight in the northern basins and the precipitation increase in the southern ones. Thus, in the northern part of the Upper Paraná Basdespite the negative trend in precipitation there was a strong augment of the river flow caused by land use change. The contribution to the positive trend of the stream flows in the middle of the Plata Basin came from both land use change and increased precipitation. Finally, in the south, the Uruguay River flow change was basically due to the precipitation trend that was not only observed during the El Niño phase, but also during the Neutral phase. Only in the Middle Paraguay Basin was the shift to more frequent and intense El Niño events that took place in the 1970s an important factor in the contribution of precipitation to streamflow trends. © 2010 Royal Meteorological Society. Fil:Doyle, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Barros, V.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08998418_v31_n15_p2234_Doyle
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language	Inglés
orig_language_str_mv	eng
topic	Land use change Plata Basin Precipitation River flow Trends Annual rainfall Land-use change Natural forests Northern basins Paraguay Plata Basin Precipitation trends River discharge River flow Three phasis Total rainfall Trends Uruguay Atmospheric pressure Deforestation Evaporation Nickel compounds Phase transitions Precipitation (chemical) Rain Rivers Stream flow Land use El Nino-Southern Oscillation evaporation land use change precipitation (climatology) river discharge river flow streamflow Deforestation Evaporation Land Use Nickel Compounds Precipitation Rain Rivers Stream Flow Brazil Paraguay Basin Parana Rio de la Plata Glycine max
spellingShingle	Land use change Plata Basin Precipitation River flow Trends Annual rainfall Land-use change Natural forests Northern basins Paraguay Plata Basin Precipitation trends River discharge River flow Three phasis Total rainfall Trends Uruguay Atmospheric pressure Deforestation Evaporation Nickel compounds Phase transitions Precipitation (chemical) Rain Rivers Stream flow Land use El Nino-Southern Oscillation evaporation land use change precipitation (climatology) river discharge river flow streamflow Deforestation Evaporation Land Use Nickel Compounds Precipitation Rain Rivers Stream Flow Brazil Paraguay Basin Parana Rio de la Plata Glycine max Doyle, M.E. Barros, V.R. Attribution of the river flow growth in the Plata Basin
topic_facet	Land use change Plata Basin Precipitation River flow Trends Annual rainfall Land-use change Natural forests Northern basins Paraguay Plata Basin Precipitation trends River discharge River flow Three phasis Total rainfall Trends Uruguay Atmospheric pressure Deforestation Evaporation Nickel compounds Phase transitions Precipitation (chemical) Rain Rivers Stream flow Land use El Nino-Southern Oscillation evaporation land use change precipitation (climatology) river discharge river flow streamflow Deforestation Evaporation Land Use Nickel Compounds Precipitation Rain Rivers Stream Flow Brazil Paraguay Basin Parana Rio de la Plata Glycine max
description	A regression approach was used to quantitatively estimate the attribution of the notable growth in the river flows of the Plata Basin during 1960-1999. The study was conducted in seven large basins that account for most of the Plata River discharge. Annual rainfall integrated over each basin and annual river flows at their closing points were used for the analysis. The contribution of rainfall changes during each of the three phases of El Niño-Southern Oscillation to total rainfall change in these basins was also calculated. The two main drivers for the generalized growth of the river flows were the increased precipitation and the decreased evaporation attributable to land use change, including deforestation of natural forest and crop switch from sugarcane and coffee trees to soybean. Other evaporation changes played a minor role. There was a north-south gradient in the respective importance of each driver, with land use change having greater weight in the northern basins and the precipitation increase in the southern ones. Thus, in the northern part of the Upper Paraná Basdespite the negative trend in precipitation there was a strong augment of the river flow caused by land use change. The contribution to the positive trend of the stream flows in the middle of the Plata Basin came from both land use change and increased precipitation. Finally, in the south, the Uruguay River flow change was basically due to the precipitation trend that was not only observed during the El Niño phase, but also during the Neutral phase. Only in the Middle Paraguay Basin was the shift to more frequent and intense El Niño events that took place in the 1970s an important factor in the contribution of precipitation to streamflow trends. © 2010 Royal Meteorological Society.
format	Artículo Artículo publishedVersion
author	Doyle, M.E. Barros, V.R.
author_facet	Doyle, M.E. Barros, V.R.
author_sort	Doyle, M.E.
title	Attribution of the river flow growth in the Plata Basin
title_short	Attribution of the river flow growth in the Plata Basin
title_full	Attribution of the river flow growth in the Plata Basin
title_fullStr	Attribution of the river flow growth in the Plata Basin
title_full_unstemmed	Attribution of the river flow growth in the Plata Basin
title_sort	attribution of the river flow growth in the plata basin
publishDate	2011
url	http://hdl.handle.net/20.500.12110/paper_08998418_v31_n15_p2234_Doyle
work_keys_str_mv	AT doyleme attributionoftheriverflowgrowthintheplatabasin AT barrosvr attributionoftheriverflowgrowthintheplatabasin
_version_	1769810291324878848

Attribution of the river flow growth in the Plata Basin

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