Influence of the Arctic oscillation on the internannual variability of precipitation in the Saint-François river watershed (Québec, Canada) as determined by canonical correlation analysis
The Saint-François River watershed, located on the south shore of the St. Lawrence River (Québec, Canada), covers an area of about 10,000 km2. To detect the climatic factors that influence precipitation in this watershed, we analyzed the succession of dry and wet pluviometric periods by a method of...
Published in: | Revue des sciences de l'eau |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
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Consortium Erudit
2008
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Online Access: | http://www.erudit.org/fr/revues/rseau/2008-v21-n1-rseau2278/017928ar.pdf https://www.erudit.org/fr/revues/rseau/2008-v21-n1-rseau2278/017928ar.pdf https://doi.org/10.7202/017928ar https://www.erudit.org/fr/revues/rseau/2008-v21-n1-rseau2278/017928ar/ https://core.ac.uk/display/59270741 http://id.erudit.org/iderudit/017928ar https://www.erudit.org/revue/rseau/2008/v21/n1/017928ar.html?vue=resume https://academic.microsoft.com/#/detail/2139888425 https://id.erudit.org/iderudit/017928ar |
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Open Polar |
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topic |
Sciences Humaines et Sociales Social Sciences and Humanities Précipitations totales annuelles oscillation arctique moyennes mobiles simples analyse des corrélations canoniques Saint-François Québec annual precipitations arctic oscillation moving average canonical correlation analysis St-François envir geo |
spellingShingle |
Sciences Humaines et Sociales Social Sciences and Humanities Précipitations totales annuelles oscillation arctique moyennes mobiles simples analyse des corrélations canoniques Saint-François Québec annual precipitations arctic oscillation moving average canonical correlation analysis St-François envir geo Ali A. Assani Francis Lajoie Guillaume Beauchamp Marie-Ève Vadnais Influence of the Arctic oscillation on the internannual variability of precipitation in the Saint-François river watershed (Québec, Canada) as determined by canonical correlation analysis |
topic_facet |
Sciences Humaines et Sociales Social Sciences and Humanities Précipitations totales annuelles oscillation arctique moyennes mobiles simples analyse des corrélations canoniques Saint-François Québec annual precipitations arctic oscillation moving average canonical correlation analysis St-François envir geo |
description |
The Saint-François River watershed, located on the south shore of the St. Lawrence River (Québec, Canada), covers an area of about 10,000 km2. To detect the climatic factors that influence precipitation in this watershed, we analyzed the succession of dry and wet pluviometric periods by a method of simple moving averages computed over five years. In addition, the relationship between four climatic indices (Arctic Oscillation, Southern Oscillation, North Atlantic Oscillation and Sea Surface Temperature) and these pluviometric periods was analyzed by means of canonical correlation analysis. We analyzed the pluviometric data measured over a 76-year period (1914-1990) at three stations representative of the watershed’s pluviometric regimes: Sherbrooke, Disraeli and Drummondville.Two types of change in the inter-annual variability of precipitation were detected. The first type of change, occuring circa 1950, concernend the distribution of precipitation throughout the watershed, i.e. spatial change. Before 1950, the succession of dry and wet precipitation periods was asynchronous (opposition of periods), but became synchronous after 1950. The second type of change, corresponding to a change in the pluviometric totals at the stations, i.e. quantitative change, was observed circa 1935 and 1970. There was, therefore, a shift from dry to wet periods or vice versa, prior to and following 1935 and 1970, depending on the station. By accounting for these three dates, we observed the succession of the following dry periods and wet periods. First, before 1950 and between 1914 and 1935, we observed a dry period at the Disraeli and Sherbrooke stations and a wet period at the Drummondville station. Between 1936 and 1950, these periods were reversed: wet periods at Disraeli and Sherbrooke but a dry period at Drummondville. Second, after 1950 and between 1951 and 1970, there was a precipitation deficit at all three stations, which, however, moved into a surplus phase after 1970.The canonical correlation analysis of precipitation ... |
format |
Article in Journal/Newspaper |
author |
Ali A. Assani Francis Lajoie Guillaume Beauchamp Marie-Ève Vadnais |
author_facet |
Ali A. Assani Francis Lajoie Guillaume Beauchamp Marie-Ève Vadnais |
author_sort |
Ali A. Assani |
title |
Influence of the Arctic oscillation on the internannual variability of precipitation in the Saint-François river watershed (Québec, Canada) as determined by canonical correlation analysis |
title_short |
Influence of the Arctic oscillation on the internannual variability of precipitation in the Saint-François river watershed (Québec, Canada) as determined by canonical correlation analysis |
title_full |
Influence of the Arctic oscillation on the internannual variability of precipitation in the Saint-François river watershed (Québec, Canada) as determined by canonical correlation analysis |
title_fullStr |
Influence of the Arctic oscillation on the internannual variability of precipitation in the Saint-François river watershed (Québec, Canada) as determined by canonical correlation analysis |
title_full_unstemmed |
Influence of the Arctic oscillation on the internannual variability of precipitation in the Saint-François river watershed (Québec, Canada) as determined by canonical correlation analysis |
title_sort |
influence of the arctic oscillation on the internannual variability of precipitation in the saint-françois river watershed (québec, canada) as determined by canonical correlation analysis |
publisher |
Consortium Erudit |
publishDate |
2008 |
url |
http://www.erudit.org/fr/revues/rseau/2008-v21-n1-rseau2278/017928ar.pdf https://www.erudit.org/fr/revues/rseau/2008-v21-n1-rseau2278/017928ar.pdf https://doi.org/10.7202/017928ar https://www.erudit.org/fr/revues/rseau/2008-v21-n1-rseau2278/017928ar/ https://core.ac.uk/display/59270741 http://id.erudit.org/iderudit/017928ar https://www.erudit.org/revue/rseau/2008/v21/n1/017928ar.html?vue=resume https://academic.microsoft.com/#/detail/2139888425 https://id.erudit.org/iderudit/017928ar |
long_lat |
ENVELOPE(-115.002,-115.002,58.384,58.384) ENVELOPE(-112.923,-112.923,62.073,62.073) |
geographic |
Arctic Canada Lawrence River François River |
geographic_facet |
Arctic Canada Lawrence River François River |
genre |
Arctic Arctique* North Atlantic North Atlantic oscillation |
genre_facet |
Arctic Arctique* North Atlantic North Atlantic oscillation |
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Revue des sciences de l'eau |
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33 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::ab76c51b51d813a3e6149bf0eb8ac1cc 2023-05-15T14:58:02+02:00 Influence of the Arctic oscillation on the internannual variability of precipitation in the Saint-François river watershed (Québec, Canada) as determined by canonical correlation analysis Ali A. Assani Francis Lajoie Guillaume Beauchamp Marie-Ève Vadnais 2008-04-29 http://www.erudit.org/fr/revues/rseau/2008-v21-n1-rseau2278/017928ar.pdf https://www.erudit.org/fr/revues/rseau/2008-v21-n1-rseau2278/017928ar.pdf https://doi.org/10.7202/017928ar https://www.erudit.org/fr/revues/rseau/2008-v21-n1-rseau2278/017928ar/ https://core.ac.uk/display/59270741 http://id.erudit.org/iderudit/017928ar https://www.erudit.org/revue/rseau/2008/v21/n1/017928ar.html?vue=resume https://academic.microsoft.com/#/detail/2139888425 https://id.erudit.org/iderudit/017928ar undefined unknown Consortium Erudit http://www.erudit.org/fr/revues/rseau/2008-v21-n1-rseau2278/017928ar.pdf https://www.erudit.org/fr/revues/rseau/2008-v21-n1-rseau2278/017928ar.pdf http://dx.doi.org/10.7202/017928ar https://www.erudit.org/fr/revues/rseau/2008-v21-n1-rseau2278/017928ar/ https://core.ac.uk/display/59270741 http://id.erudit.org/iderudit/017928ar https://www.erudit.org/revue/rseau/2008/v21/n1/017928ar.html?vue=resume https://academic.microsoft.com/#/detail/2139888425 https://id.erudit.org/iderudit/017928ar undefined 017928ar 10.7202/017928ar 2139888425 oai:erudit.org:017928ar 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|issn___print::130cf49e979129942002da43f89d0654 10|openaire____::8ac8380272269217cb09a928c8caa993 10|openaire____::5f532a3fc4f1ea403f37070f59a7a53a 10|opendoar____::16e6a3326dd7d868cbc926602a61e4d0 Sciences Humaines et Sociales Social Sciences and Humanities Précipitations totales annuelles oscillation arctique moyennes mobiles simples analyse des corrélations canoniques Saint-François Québec annual precipitations arctic oscillation moving average canonical correlation analysis St-François envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2008 fttriple https://doi.org/10.7202/017928ar 2023-01-22T17:16:31Z The Saint-François River watershed, located on the south shore of the St. Lawrence River (Québec, Canada), covers an area of about 10,000 km2. To detect the climatic factors that influence precipitation in this watershed, we analyzed the succession of dry and wet pluviometric periods by a method of simple moving averages computed over five years. In addition, the relationship between four climatic indices (Arctic Oscillation, Southern Oscillation, North Atlantic Oscillation and Sea Surface Temperature) and these pluviometric periods was analyzed by means of canonical correlation analysis. We analyzed the pluviometric data measured over a 76-year period (1914-1990) at three stations representative of the watershed’s pluviometric regimes: Sherbrooke, Disraeli and Drummondville.Two types of change in the inter-annual variability of precipitation were detected. The first type of change, occuring circa 1950, concernend the distribution of precipitation throughout the watershed, i.e. spatial change. Before 1950, the succession of dry and wet precipitation periods was asynchronous (opposition of periods), but became synchronous after 1950. The second type of change, corresponding to a change in the pluviometric totals at the stations, i.e. quantitative change, was observed circa 1935 and 1970. There was, therefore, a shift from dry to wet periods or vice versa, prior to and following 1935 and 1970, depending on the station. By accounting for these three dates, we observed the succession of the following dry periods and wet periods. First, before 1950 and between 1914 and 1935, we observed a dry period at the Disraeli and Sherbrooke stations and a wet period at the Drummondville station. Between 1936 and 1950, these periods were reversed: wet periods at Disraeli and Sherbrooke but a dry period at Drummondville. Second, after 1950 and between 1951 and 1970, there was a precipitation deficit at all three stations, which, however, moved into a surplus phase after 1970.The canonical correlation analysis of precipitation ... Article in Journal/Newspaper Arctic Arctique* North Atlantic North Atlantic oscillation Unknown Arctic Canada Lawrence River ENVELOPE(-115.002,-115.002,58.384,58.384) François River ENVELOPE(-112.923,-112.923,62.073,62.073) Revue des sciences de l'eau 21 1 19 33 |