Wavelet Analysis: A Links Between the North Atlantic Oscillation andWinter Drought in the MediterraneanWatersheds of theWestern Rif (North Morocco)
Morocco in general and the Mediterranean watersheds of the Western Rif in particular, occasionally have been affected by the negative impacts of drought, as demonstrated by the drought of 1944-1945, 1980-1984, 1994-95, 1998-2000, 2004-2005, 2011-12 and 2015-2016. This study aims (1) to identify and...
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ftjeuj:oai:ojs.pkp.sfu.ca:article/12960 2023-06-06T11:57:01+02:00 Wavelet Analysis: A Links Between the North Atlantic Oscillation andWinter Drought in the MediterraneanWatersheds of theWestern Rif (North Morocco) El-Khantoury, Ismail Obda, Khalid Achiban, Hassan 2020-05-31 application/pdf https://eujournal.org/index.php/esj/article/view/12960 https://doi.org/10.19044/esj.2020.v16n15p99 eng eng European Scientific Institute, ESI https://eujournal.org/index.php/esj/article/view/12960/13073 https://eujournal.org/index.php/esj/article/view/12960/13226 https://eujournal.org/index.php/esj/article/view/12960 doi:10.19044/esj.2020.v16n15p99 Copyright (c) 2020 Ismail El-Khantoury, Khalid Obda, Hassan Achiban https://creativecommons.org/licenses/by-nc-nd/4.0 European Scientific Journal, ESJ; Vol 16 No 15 (2020): ESJ Natural/Life/Medical Sciences; 99 Revista Científica Europea; Vol. 16 Núm. 15 (2020): ESJ Natural/Life/Medical Sciences; 99 1857-7431 1857-7881 10.19044/esj.2020.v16n15 Drought Wavelet SPI Western Rif NAO info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion peer-reviewed article 2020 ftjeuj https://doi.org/10.19044/esj.2020.v16n15p9910.19044/esj.2020.v16n15 2023-04-16T08:42:11Z Morocco in general and the Mediterranean watersheds of the Western Rif in particular, occasionally have been affected by the negative impacts of drought, as demonstrated by the drought of 1944-1945, 1980-1984, 1994-95, 1998-2000, 2004-2005, 2011-12 and 2015-2016. This study aims (1) to identify and characterize the dry winters (DJFM) recorded in the Mediterranean watersheds of theWestern Rif, and (2) to analyse the variability of precipitation in this region over the last few decades in relation to the North Atlantic Oscillation (NAO). The results of this study show that the years 1980- 81, 1994-95, 1999-2000 and 2011-12 recorded the most severe winter drought. In addition, the wavelet coherence values between the NAO index and the SPI winter index (DJFM) for the period (1978-79/2014-15) show a very close relationship between the two variables for all time scales (ranging from 2 to 13 years), especially since the early 1990s. The phase angle shows a negative correlation between the drought index (SPI) and the NAO index. Article in Journal/Newspaper North Atlantic North Atlantic oscillation European Scientific Journal (European Scientific Institute) Rif ENVELOPE(-16.172,-16.172,66.526,66.526) European Scientific Journal ESJ 16 15 |
institution |
Open Polar |
collection |
European Scientific Journal (European Scientific Institute) |
op_collection_id |
ftjeuj |
language |
English |
topic |
Drought Wavelet SPI Western Rif NAO |
spellingShingle |
Drought Wavelet SPI Western Rif NAO El-Khantoury, Ismail Obda, Khalid Achiban, Hassan Wavelet Analysis: A Links Between the North Atlantic Oscillation andWinter Drought in the MediterraneanWatersheds of theWestern Rif (North Morocco) |
topic_facet |
Drought Wavelet SPI Western Rif NAO |
description |
Morocco in general and the Mediterranean watersheds of the Western Rif in particular, occasionally have been affected by the negative impacts of drought, as demonstrated by the drought of 1944-1945, 1980-1984, 1994-95, 1998-2000, 2004-2005, 2011-12 and 2015-2016. This study aims (1) to identify and characterize the dry winters (DJFM) recorded in the Mediterranean watersheds of theWestern Rif, and (2) to analyse the variability of precipitation in this region over the last few decades in relation to the North Atlantic Oscillation (NAO). The results of this study show that the years 1980- 81, 1994-95, 1999-2000 and 2011-12 recorded the most severe winter drought. In addition, the wavelet coherence values between the NAO index and the SPI winter index (DJFM) for the period (1978-79/2014-15) show a very close relationship between the two variables for all time scales (ranging from 2 to 13 years), especially since the early 1990s. The phase angle shows a negative correlation between the drought index (SPI) and the NAO index. |
format |
Article in Journal/Newspaper |
author |
El-Khantoury, Ismail Obda, Khalid Achiban, Hassan |
author_facet |
El-Khantoury, Ismail Obda, Khalid Achiban, Hassan |
author_sort |
El-Khantoury, Ismail |
title |
Wavelet Analysis: A Links Between the North Atlantic Oscillation andWinter Drought in the MediterraneanWatersheds of theWestern Rif (North Morocco) |
title_short |
Wavelet Analysis: A Links Between the North Atlantic Oscillation andWinter Drought in the MediterraneanWatersheds of theWestern Rif (North Morocco) |
title_full |
Wavelet Analysis: A Links Between the North Atlantic Oscillation andWinter Drought in the MediterraneanWatersheds of theWestern Rif (North Morocco) |
title_fullStr |
Wavelet Analysis: A Links Between the North Atlantic Oscillation andWinter Drought in the MediterraneanWatersheds of theWestern Rif (North Morocco) |
title_full_unstemmed |
Wavelet Analysis: A Links Between the North Atlantic Oscillation andWinter Drought in the MediterraneanWatersheds of theWestern Rif (North Morocco) |
title_sort |
wavelet analysis: a links between the north atlantic oscillation andwinter drought in the mediterraneanwatersheds of thewestern rif (north morocco) |
publisher |
European Scientific Institute, ESI |
publishDate |
2020 |
url |
https://eujournal.org/index.php/esj/article/view/12960 https://doi.org/10.19044/esj.2020.v16n15p99 |
long_lat |
ENVELOPE(-16.172,-16.172,66.526,66.526) |
geographic |
Rif |
geographic_facet |
Rif |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
European Scientific Journal, ESJ; Vol 16 No 15 (2020): ESJ Natural/Life/Medical Sciences; 99 Revista Científica Europea; Vol. 16 Núm. 15 (2020): ESJ Natural/Life/Medical Sciences; 99 1857-7431 1857-7881 10.19044/esj.2020.v16n15 |
op_relation |
https://eujournal.org/index.php/esj/article/view/12960/13073 https://eujournal.org/index.php/esj/article/view/12960/13226 https://eujournal.org/index.php/esj/article/view/12960 doi:10.19044/esj.2020.v16n15p99 |
op_rights |
Copyright (c) 2020 Ismail El-Khantoury, Khalid Obda, Hassan Achiban https://creativecommons.org/licenses/by-nc-nd/4.0 |
op_doi |
https://doi.org/10.19044/esj.2020.v16n15p9910.19044/esj.2020.v16n15 |
container_title |
European Scientific Journal ESJ |
container_volume |
16 |
container_issue |
15 |
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1767964935664435200 |