Air flow analysis in the upper Río Negro Valley (Argentina)

The so called Upper Río Negro Valley in Argentina is one of the most important fruit and vegetable production regions of the country. It comprises the lower valleys of the Limay and Neuquén rivers and the upper Negro river valley. Out of the 41,671 cultivated hectares, 84.6% are cultivated with frui...

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Detalles Bibliográficos
Autores principales:	Cogliati, Marisa Gloria, Mazzeo, Nicolás Antonio
Publicado:	2006
Materias:	Air flow Complex terrain Late frosts Valley winds Agricultural products Frost effects Low temperature phenomena Wind effects Air flow analysis Weather pattern Atmospheric movements airflow complex terrain orographic effect valley wind velocity Argentina Negro Valley Rio Negro [Argentina] South America Malus x domestica Pyrus communis
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01698095_v80_n4_p263_Cogliati http://hdl.handle.net/20.500.12110/paper_01698095_v80_n4_p263_Cogliati
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_01698095_v80_n4_p263_Cogliati
record_format	dspace
spelling	paper:paper_01698095_v80_n4_p263_Cogliati2023-06-08T15:18:35Z Air flow analysis in the upper Río Negro Valley (Argentina) Cogliati, Marisa Gloria Mazzeo, Nicolás Antonio Air flow Complex terrain Late frosts Valley winds Agricultural products Frost effects Low temperature phenomena Wind effects Air flow analysis Late frosts Weather pattern Atmospheric movements airflow complex terrain orographic effect valley wind velocity Argentina Negro Valley Rio Negro [Argentina] South America Malus x domestica Pyrus communis The so called Upper Río Negro Valley in Argentina is one of the most important fruit and vegetable production regions of the country. It comprises the lower valleys of the Limay and Neuquén rivers and the upper Negro river valley. Out of the 41,671 cultivated hectares, 84.6% are cultivated with fruit trees, especially apple, pear and stone fruit trees. Late frosts occurring when trees are sensitive to low temperatures have a significant impact on the regional production. This study presents an analysis of air flow characteristics in the Upper Río Negro Valley and its relationship with ambient air flow. To such effect, observations made when synoptic-scale weather patterns were favorable for radiative frosts (light wind and clear sky) or nocturnal temperature inversion in the lower layer were used. In the Negro river valley, both wind channeling and downward horizontal momentum transport from ambient wind were observed; in nighttime, very light wind events occurred, possibly associated with drainage winds from the nearby higher levels of the barda. In the Neuquén river valley, the prevailing effect appeared to be forced channeling, consistent with the results obtained in valleys where the synoptic scale wind crossed the axis of the valley. In the Limay river valley, the flow was observed to blow parallel to the longitudinal valley axis, possibly influenced by pressure gradient and forced channeling. © 2005 Elsevier B.V. All rights reserved. Fil:Cogliati, M.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mazzeo, N.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01698095_v80_n4_p263_Cogliati http://hdl.handle.net/20.500.12110/paper_01698095_v80_n4_p263_Cogliati
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Air flow Complex terrain Late frosts Valley winds Agricultural products Frost effects Low temperature phenomena Wind effects Air flow analysis Late frosts Weather pattern Atmospheric movements airflow complex terrain orographic effect valley wind velocity Argentina Negro Valley Rio Negro [Argentina] South America Malus x domestica Pyrus communis
spellingShingle	Air flow Complex terrain Late frosts Valley winds Agricultural products Frost effects Low temperature phenomena Wind effects Air flow analysis Late frosts Weather pattern Atmospheric movements airflow complex terrain orographic effect valley wind velocity Argentina Negro Valley Rio Negro [Argentina] South America Malus x domestica Pyrus communis Cogliati, Marisa Gloria Mazzeo, Nicolás Antonio Air flow analysis in the upper Río Negro Valley (Argentina)
topic_facet	Air flow Complex terrain Late frosts Valley winds Agricultural products Frost effects Low temperature phenomena Wind effects Air flow analysis Late frosts Weather pattern Atmospheric movements airflow complex terrain orographic effect valley wind velocity Argentina Negro Valley Rio Negro [Argentina] South America Malus x domestica Pyrus communis
description	The so called Upper Río Negro Valley in Argentina is one of the most important fruit and vegetable production regions of the country. It comprises the lower valleys of the Limay and Neuquén rivers and the upper Negro river valley. Out of the 41,671 cultivated hectares, 84.6% are cultivated with fruit trees, especially apple, pear and stone fruit trees. Late frosts occurring when trees are sensitive to low temperatures have a significant impact on the regional production. This study presents an analysis of air flow characteristics in the Upper Río Negro Valley and its relationship with ambient air flow. To such effect, observations made when synoptic-scale weather patterns were favorable for radiative frosts (light wind and clear sky) or nocturnal temperature inversion in the lower layer were used. In the Negro river valley, both wind channeling and downward horizontal momentum transport from ambient wind were observed; in nighttime, very light wind events occurred, possibly associated with drainage winds from the nearby higher levels of the barda. In the Neuquén river valley, the prevailing effect appeared to be forced channeling, consistent with the results obtained in valleys where the synoptic scale wind crossed the axis of the valley. In the Limay river valley, the flow was observed to blow parallel to the longitudinal valley axis, possibly influenced by pressure gradient and forced channeling. © 2005 Elsevier B.V. All rights reserved.
author	Cogliati, Marisa Gloria Mazzeo, Nicolás Antonio
author_facet	Cogliati, Marisa Gloria Mazzeo, Nicolás Antonio
author_sort	Cogliati, Marisa Gloria
title	Air flow analysis in the upper Río Negro Valley (Argentina)
title_short	Air flow analysis in the upper Río Negro Valley (Argentina)
title_full	Air flow analysis in the upper Río Negro Valley (Argentina)
title_fullStr	Air flow analysis in the upper Río Negro Valley (Argentina)
title_full_unstemmed	Air flow analysis in the upper Río Negro Valley (Argentina)
title_sort	air flow analysis in the upper río negro valley (argentina)
publishDate	2006
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01698095_v80_n4_p263_Cogliati http://hdl.handle.net/20.500.12110/paper_01698095_v80_n4_p263_Cogliati
work_keys_str_mv	AT cogliatimarisagloria airflowanalysisintheupperrionegrovalleyargentina AT mazzeonicolasantonio airflowanalysisintheupperrionegrovalleyargentina
_version_	1768545462267150336

Air flow analysis in the upper Río Negro Valley (Argentina)

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