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Abstract:

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.

Registro:

Documento: Artículo
Título:Air flow analysis in the upper Río Negro Valley (Argentina)
Autor:Cogliati, M.G.; Mazzeo, N.A.
Filiación:Departamento de Geografía, Facultad de Humanidades, Universidad Nacional del Comahue, Av. Argentina 1400, Q8300AZN Neuquén, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias de la Atmósfera y los Océanos, Facultad de Ciencias Exactas y Naturales, Pabellon 2. 2do, Piso, Ciudad Univ., 1428 Buenos Aires, Argentina
Palabras clave: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
Año:2006
Volumen:80
Número:4
Página de inicio:263
Página de fin:279
DOI: http://dx.doi.org/10.1016/j.atmosres.2005.09.005
Título revista:Atmospheric Research
Título revista abreviado:Atmos. Res.
ISSN:01698095
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01698095_v80_n4_p263_Cogliati

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Citas:

---------- APA ----------
Cogliati, M.G. & Mazzeo, N.A. (2006) . Air flow analysis in the upper Río Negro Valley (Argentina). Atmospheric Research, 80(4), 263-279.
http://dx.doi.org/10.1016/j.atmosres.2005.09.005
---------- CHICAGO ----------
Cogliati, M.G., Mazzeo, N.A. "Air flow analysis in the upper Río Negro Valley (Argentina)" . Atmospheric Research 80, no. 4 (2006) : 263-279.
http://dx.doi.org/10.1016/j.atmosres.2005.09.005
---------- MLA ----------
Cogliati, M.G., Mazzeo, N.A. "Air flow analysis in the upper Río Negro Valley (Argentina)" . Atmospheric Research, vol. 80, no. 4, 2006, pp. 263-279.
http://dx.doi.org/10.1016/j.atmosres.2005.09.005
---------- VANCOUVER ----------
Cogliati, M.G., Mazzeo, N.A. Air flow analysis in the upper Río Negro Valley (Argentina). Atmos. Res. 2006;80(4):263-279.
http://dx.doi.org/10.1016/j.atmosres.2005.09.005