Climatological Features of the Vento Norte Phenomenon in the Extreme South of Brazil

Downslope windstorm known as Vento Norte (VNOR; Portuguese for “North Wind”) is a common phenomenon that occurs in southern Brazil during the winter season. Hence, this study attempted to investigate the climatological characteristics of VNOR using seventeen years (2004–2020) of hourly observations...

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Main Authors:	da Rosa, Cinara Ewerling, Stefanello, Michel, Facco, Douglas Stefanello, Roberti, Débora Regina, Rossi, Fábio Diniz, Degrazia, Gervásio Annes
Format:	Article in Journal/Newspaper
Language:	English
Published:	Universidade Federal do Rio de Janeiro 2023
Subjects:	Downslope Winds Regional Advection Local Topography Arctic
Online Access:	https://revistas.ufrj.br/index.php/aigeo/article/view/52599 https://doi.org/10.11137/1982-3908_%Y_%v_52599

id	ftufriodejaneiro:oai:www.revistas.ufrj.br:article/52599
record_format	openpolar
institution	Open Polar
collection	Portal de Periódicos da UFRJ (Universidade Federal do Rio de Janeiro)
op_collection_id	ftufriodejaneiro
language	English
topic	Downslope Winds Regional Advection Local Topography
spellingShingle	Downslope Winds Regional Advection Local Topography da Rosa, Cinara Ewerling Stefanello, Michel Facco, Douglas Stefanello Roberti, Débora Regina Rossi, Fábio Diniz Degrazia, Gervásio Annes Climatological Features of the Vento Norte Phenomenon in the Extreme South of Brazil
topic_facet	Downslope Winds Regional Advection Local Topography
description	Downslope windstorm known as Vento Norte (VNOR; Portuguese for “North Wind”) is a common phenomenon that occurs in southern Brazil during the winter season. Hence, this study attempted to investigate the climatological characteristics of VNOR using seventeen years (2004–2020) of hourly observations collected at seven meteorological stations distributed over the central region of Rio Grande do Sul State. The VNOR windstorm episodes are identified by intense wind gusts and warm air advection from the northern direction. They were selected from the data set obtained during the winter in the city of Santa Maria (SM). Statistical analysis showed that the detected VNOR events were characterized by mean wind gusts ≈15 m.s-1, mean wind direction of 350° and mean air temperature of 27 °C. Average duration of the events was about 9 h, with the longest event lasting 21 h. Characteristics and effects of this phenomenon were compared with those in other locations (meridional and zonal sections). Average values of wind gusts from the northern direction presented a significant increase of ≈200% for the winter period in SM. Nonetheless, a less significant increase in wind gusts was recorded in the meridional (28%) and zonal (41%) sections away from SM. The central location of SM has favorable topographic characteristics for this amplification, with a sharp altitude difference caused by the plateau- plain interface of ≈300 m. Our findings showed that the VNOR phenomenon mainly affects the climate of the southern region of Brazil, with a local amplification in the city of SM.
format	Article in Journal/Newspaper
author	da Rosa, Cinara Ewerling Stefanello, Michel Facco, Douglas Stefanello Roberti, Débora Regina Rossi, Fábio Diniz Degrazia, Gervásio Annes
author_facet	da Rosa, Cinara Ewerling Stefanello, Michel Facco, Douglas Stefanello Roberti, Débora Regina Rossi, Fábio Diniz Degrazia, Gervásio Annes
author_sort	da Rosa, Cinara Ewerling
title	Climatological Features of the Vento Norte Phenomenon in the Extreme South of Brazil
title_short	Climatological Features of the Vento Norte Phenomenon in the Extreme South of Brazil
title_full	Climatological Features of the Vento Norte Phenomenon in the Extreme South of Brazil
title_fullStr	Climatological Features of the Vento Norte Phenomenon in the Extreme South of Brazil
title_full_unstemmed	Climatological Features of the Vento Norte Phenomenon in the Extreme South of Brazil
title_sort	climatological features of the vento norte phenomenon in the extreme south of brazil
publisher	Universidade Federal do Rio de Janeiro
publishDate	2023
url	https://revistas.ufrj.br/index.php/aigeo/article/view/52599 https://doi.org/10.11137/1982-3908_%Y_%v_52599
genre	Arctic
genre_facet	Arctic
op_source	Anuário do Instituto de Geociências; v. 46 (2023) 1982-3908 0101-9759
op_relation	https://revistas.ufrj.br/index.php/aigeo/article/view/52599/pdf https://revistas.ufrj.br/index.php/aigeo/article/downloadSuppFile/52599/19131 https://revistas.ufrj.br/index.php/aigeo/article/downloadSuppFile/52599/19132 https://revistas.ufrj.br/index.php/aigeo/article/downloadSuppFile/52599/19133 https://revistas.ufrj.br/index.php/aigeo/article/downloadSuppFile/52599/19462 https://revistas.ufrj.br/index.php/aigeo/article/downloadSuppFile/52599/19463 Abatzoglou, J.T., Barbero, R. & Nauslar, N.J. 2013, 'Diagnosing santa ana winds in southern California with synoptic-scale analysis', Weather and Forecasting, vol. 28, no. 3, pp. 704–10, DOI:10.1175/WAF-D-13-00002.1. Abatzoglou, J.T., Hatchett, B.J., Fox-Hughes, P., Gershunov, A. & Nauslar, N.J. 2021, 'Global climatology of synoptically-forced downslope winds', International Journal of Climatology, vol. 41, no. 1, pp. 31–50, DOI:10.1002/joc.6607. Arbage, M.C.A., Degrazia, G.A., Welter, G.S., Roberti, D.R., Acevedo, O.C., de Moraes, O.L.L., Ferraz, S.T., Timm, A.U. & Moreira, V.S. 2008, 'Turbulent statistical characteristics associated to the north wind phenomenon in southern Brazil with application to turbulent diﬀusion', Physica A: Statistical Mechanics and its Applications, vol. 387, no. 16–17, pp. 4376–86, DOI:10.1016/j.physa.2008.02.068. Arrillaga, M.J., Yagüe, A.C., Román, C., Sastre, M., Jiménez, M.A., Maqueda, B.G. & Vilà-Guerau, J. 2019, 'From weak to intense downslope winds: origin, interaction with boundary-layer turbulence and impact on CO2 variability', Atmospheric chemistry and physics, vol. 19, no. 7, pp. 4615–35, DOI:10.5194/acp-19-4615-2019. Ashbaugh, L.L., Malm, W.C. & Sadeh, W.Z. 1985, 'A residence time probability analysis of sulfur concentrations at Grand Canyon National Park', Atmospheric Environment, vol. 19, no. 8, pp. 1263–70, DOI:10.1016/0004-6981(85)90256-2. 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op_rights	Direitos autorais 2023 Anuário do Instituto de Geociências http://creativecommons.org/licenses/by/4.0
op_doi	https://doi.org/10.11137/1982-3908_%Y_%v_5259910.1175/1520-0493(1934)62<54:BOTCWA>2.0.CO;210.1002/grl.5064110.4236/acs.2015.5301210.1175/1087-3562(2003)007%3C0001:TSAWOC%3E2.0.CO;210.1175/1520-0450(1982)021%3C0270:BOTIID%3E2.0.CO;2
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spelling	ftufriodejaneiro:oai:www.revistas.ufrj.br:article/52599 2023-06-11T04:07:52+02:00 Climatological Features of the Vento Norte Phenomenon in the Extreme South of Brazil da Rosa, Cinara Ewerling Stefanello, Michel Facco, Douglas Stefanello Roberti, Débora Regina Rossi, Fábio Diniz Degrazia, Gervásio Annes 2023-04-12 application/pdf https://revistas.ufrj.br/index.php/aigeo/article/view/52599 https://doi.org/10.11137/1982-3908_%Y_%v_52599 eng eng Universidade Federal do Rio de Janeiro https://revistas.ufrj.br/index.php/aigeo/article/view/52599/pdf https://revistas.ufrj.br/index.php/aigeo/article/downloadSuppFile/52599/19131 https://revistas.ufrj.br/index.php/aigeo/article/downloadSuppFile/52599/19132 https://revistas.ufrj.br/index.php/aigeo/article/downloadSuppFile/52599/19133 https://revistas.ufrj.br/index.php/aigeo/article/downloadSuppFile/52599/19462 https://revistas.ufrj.br/index.php/aigeo/article/downloadSuppFile/52599/19463 Abatzoglou, J.T., Barbero, R. & Nauslar, N.J. 2013, 'Diagnosing santa ana winds in southern California with synoptic-scale analysis', Weather and Forecasting, vol. 28, no. 3, pp. 704–10, DOI:10.1175/WAF-D-13-00002.1. Abatzoglou, J.T., Hatchett, B.J., Fox-Hughes, P., Gershunov, A. & Nauslar, N.J. 2021, 'Global climatology of synoptically-forced downslope winds', International Journal of Climatology, vol. 41, no. 1, pp. 31–50, DOI:10.1002/joc.6607. Arbage, M.C.A., Degrazia, G.A., Welter, G.S., Roberti, D.R., Acevedo, O.C., de Moraes, O.L.L., Ferraz, S.T., Timm, A.U. & Moreira, V.S. 2008, 'Turbulent statistical characteristics associated to the north wind phenomenon in southern Brazil with application to turbulent diﬀusion', Physica A: Statistical Mechanics and its Applications, vol. 387, no. 16–17, pp. 4376–86, DOI:10.1016/j.physa.2008.02.068. Arrillaga, M.J., Yagüe, A.C., Román, C., Sastre, M., Jiménez, M.A., Maqueda, B.G. & Vilà-Guerau, J. 2019, 'From weak to intense downslope winds: origin, interaction with boundary-layer turbulence and impact on CO2 variability', Atmospheric chemistry and physics, vol. 19, no. 7, pp. 4615–35, DOI:10.5194/acp-19-4615-2019. Ashbaugh, L.L., Malm, W.C. & Sadeh, W.Z. 1985, 'A residence time probability analysis of sulfur concentrations at Grand Canyon National Park', Atmospheric Environment, vol. 19, no. 8, pp. 1263–70, DOI:10.1016/0004-6981(85)90256-2. Carslaw, D.C. & Ropkins, K. 2012, 'Openair-an R package for air quality data analysis', Environmental Modelling & Software, vol. 27–28, no. 1, pp. 52–61, DOI:10.1016/j.envsoft.2011.09.008. Cooke, L.J., Rose, M.S. & Becker, W.J. 2000, 'Chinook winds and migraine headache', Neurology, vol. 54, no. 2, pp. 302–7, DOI:10.1212/WNL.54.2.302. Cruz, M.G., Alexander, M.E., Fernandes, P. M., Kilinc, M. & Sil, A. 2020, 'Evaluating the 10% wind speed rule of thumb for estimating a wildﬁre’s forward rate of spread against an extensive independent set of observations', Environmental Modelling & Software, vol. 133, no. 1, pp. 104818–33, DOI:10.1016/j.envsoft.2020.104818. da Rosa, C.E., Stefanello, M., Facco, D.S., Roberti, D.R., Rossi, F.D., Nascimento, E.L. & Degrazia, G.A. 2022, 'Regional- scale meteorological characteristics of the Vento Norte phenomenon observed in southern Brazil', Environmental Fluid Mechanics, vol. 22, no. 4, pp. 819–37, DOI:10.1007/s10652-022-09855-4. da Rosa, C.E., Stefanello, M., Maldaner, S., Facco, D.S., Roberti, D.R., Tirabassi, T. & Degrazia, G.A. 2021a, 'Employing spectral analysis to obtain dispersion parameters in an atmospheric environment driven by a mesoscale downslope windstorm', International Journal of Environmental Research and Public Health, vol. 18, no. 24, pp. 13027–38, DOI:10.3390/ijerph182413027. da Rosa, C.E., Stefanello, M., Nascimento, E.L., Rossi, F.D., Roberti, D. 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Direitos autorais 2023 Anuário do Instituto de Geociências http://creativecommons.org/licenses/by/4.0 Anuário do Instituto de Geociências; v. 46 (2023) 1982-3908 0101-9759 Downslope Winds Regional Advection Local Topography info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2023 ftufriodejaneiro https://doi.org/10.11137/1982-3908_%Y_%v_5259910.1175/1520-0493(1934)62<54:BOTCWA>2.0.CO;210.1002/grl.5064110.4236/acs.2015.5301210.1175/1087-3562(2003)007%3C0001:TSAWOC%3E2.0.CO;210.1175/1520-0450(1982)021%3C0270:BOTIID%3E2.0.CO;2 2023-04-23T06:33:18Z Downslope windstorm known as Vento Norte (VNOR; Portuguese for “North Wind”) is a common phenomenon that occurs in southern Brazil during the winter season. Hence, this study attempted to investigate the climatological characteristics of VNOR using seventeen years (2004–2020) of hourly observations collected at seven meteorological stations distributed over the central region of Rio Grande do Sul State. The VNOR windstorm episodes are identified by intense wind gusts and warm air advection from the northern direction. They were selected from the data set obtained during the winter in the city of Santa Maria (SM). Statistical analysis showed that the detected VNOR events were characterized by mean wind gusts ≈15 m.s-1, mean wind direction of 350° and mean air temperature of 27 °C. Average duration of the events was about 9 h, with the longest event lasting 21 h. Characteristics and effects of this phenomenon were compared with those in other locations (meridional and zonal sections). Average values of wind gusts from the northern direction presented a significant increase of ≈200% for the winter period in SM. Nonetheless, a less significant increase in wind gusts was recorded in the meridional (28%) and zonal (41%) sections away from SM. The central location of SM has favorable topographic characteristics for this amplification, with a sharp altitude difference caused by the plateau- plain interface of ≈300 m. Our findings showed that the VNOR phenomenon mainly affects the climate of the southern region of Brazil, with a local amplification in the city of SM. Article in Journal/Newspaper Arctic Portal de Periódicos da UFRJ (Universidade Federal do Rio de Janeiro)

Climatological Features of the Vento Norte Phenomenon in the Extreme South of Brazil

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