The influence of quasi-biennial oscillation on West African Rainfall
Abstract The quasi-biennial oscillation (QBO) is a global climate phenomenon of repeating cycles of tropical stratosphere winds, reversing direction from eastward to westward roughly every 14 months. However, unlike in Eastern Africa and India where QBO effect has been well studied, knowledge about...
Ausführliche Beschreibung
Autor*in: |
Ballo, Abdoulaye [verfasserIn] |
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E-Artikel |
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Englisch |
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2021 |
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Anmerkung: |
© The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021 |
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Übergeordnetes Werk: |
Enthalten in: Modeling earth systems and environment - Berlin : Springer, 2015, 8(2021), 2 vom: 27. Mai, Seite 1461-1480 |
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Übergeordnetes Werk: |
volume:8 ; year:2021 ; number:2 ; day:27 ; month:05 ; pages:1461-1480 |
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DOI / URN: |
10.1007/s40808-021-01185-6 |
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SPR04707664X |
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520 | |a Abstract The quasi-biennial oscillation (QBO) is a global climate phenomenon of repeating cycles of tropical stratosphere winds, reversing direction from eastward to westward roughly every 14 months. However, unlike in Eastern Africa and India where QBO effect has been well studied, knowledge about its influence on West African rainfall and its variability is very scares. Using the five historical Coupled Models Intercomparison Project Phase 5 (CMIP5) simulations, (CMCC-CMS, HadGEM2-CC, HadGEM3-A, MPI-ESM-MR and MIROC-ESM-MR), this study investigates the influence of (QBO) on West African precipitation. The capability of the CMIP5 models to reproduce the quasi-biennial oscillation structure was evaluated while the influence of the QBO on West African precipitation was studied using wavelet analysis over the three zones of the regions (Sahel, Savannah, Guinea). Further, we studied the composite of rainfall variability during QBO and non-QBO years and also applied the composite of the QBO to investigate the dominant impacts of its phases (west and east) over the region. Results show that all models capture the general structure of the QBO well with varying biases but HadGEM2-CC produced results closest to observation (ERAINT). Therefore using this model with ERAINT and applying wavelet coherence analysis it was found that there is good coupling between QBO and precipitation over all three climatic zones of West Africa with the coherence of 0.6–0.8 in both ERA-Interim and HadGEM2-CC for the intra-annual (0.5–1.0 year) and inter-annual (2.0–4.0 years) timescales in all zones and at the two levels (30 and 50 hPa) considered. In addition, rainfall rates were found to be generally higher everywhere during the west phase of a QBO year than during the east phase but more so over the Savannah and Guinea region. | ||
650 | 4 | |a Quasi-biennial oscillation |7 (dpeaa)DE-He213 | |
650 | 4 | |a West Africa precipitation |7 (dpeaa)DE-He213 | |
650 | 4 | |a West and east phase |7 (dpeaa)DE-He213 | |
650 | 4 | |a QBO and non-QBO year |7 (dpeaa)DE-He213 | |
700 | 1 | |a Omotosho, J. Bayo |4 aut | |
700 | 1 | |a Klutse, Nana Ama Browne |4 aut | |
700 | 1 | |a Abiodun, Babatunde J. |4 aut | |
700 | 1 | |a Coulibaly, Amadou |4 aut | |
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10.1007/s40808-021-01185-6 doi (DE-627)SPR04707664X (SPR)s40808-021-01185-6-e DE-627 ger DE-627 rakwb eng Ballo, Abdoulaye verfasserin (orcid)0000-0001-8523-5914 aut The influence of quasi-biennial oscillation on West African Rainfall 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021 Abstract The quasi-biennial oscillation (QBO) is a global climate phenomenon of repeating cycles of tropical stratosphere winds, reversing direction from eastward to westward roughly every 14 months. However, unlike in Eastern Africa and India where QBO effect has been well studied, knowledge about its influence on West African rainfall and its variability is very scares. Using the five historical Coupled Models Intercomparison Project Phase 5 (CMIP5) simulations, (CMCC-CMS, HadGEM2-CC, HadGEM3-A, MPI-ESM-MR and MIROC-ESM-MR), this study investigates the influence of (QBO) on West African precipitation. The capability of the CMIP5 models to reproduce the quasi-biennial oscillation structure was evaluated while the influence of the QBO on West African precipitation was studied using wavelet analysis over the three zones of the regions (Sahel, Savannah, Guinea). Further, we studied the composite of rainfall variability during QBO and non-QBO years and also applied the composite of the QBO to investigate the dominant impacts of its phases (west and east) over the region. Results show that all models capture the general structure of the QBO well with varying biases but HadGEM2-CC produced results closest to observation (ERAINT). Therefore using this model with ERAINT and applying wavelet coherence analysis it was found that there is good coupling between QBO and precipitation over all three climatic zones of West Africa with the coherence of 0.6–0.8 in both ERA-Interim and HadGEM2-CC for the intra-annual (0.5–1.0 year) and inter-annual (2.0–4.0 years) timescales in all zones and at the two levels (30 and 50 hPa) considered. In addition, rainfall rates were found to be generally higher everywhere during the west phase of a QBO year than during the east phase but more so over the Savannah and Guinea region. Quasi-biennial oscillation (dpeaa)DE-He213 West Africa precipitation (dpeaa)DE-He213 West and east phase (dpeaa)DE-He213 QBO and non-QBO year (dpeaa)DE-He213 Omotosho, J. Bayo aut Klutse, Nana Ama Browne aut Abiodun, Babatunde J. aut Coulibaly, Amadou aut Enthalten in Modeling earth systems and environment Berlin : Springer, 2015 8(2021), 2 vom: 27. Mai, Seite 1461-1480 (DE-627)825736587 (DE-600)2821317-8 2363-6211 nnns volume:8 year:2021 number:2 day:27 month:05 pages:1461-1480 https://dx.doi.org/10.1007/s40808-021-01185-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 8 2021 2 27 05 1461-1480 |
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10.1007/s40808-021-01185-6 doi (DE-627)SPR04707664X (SPR)s40808-021-01185-6-e DE-627 ger DE-627 rakwb eng Ballo, Abdoulaye verfasserin (orcid)0000-0001-8523-5914 aut The influence of quasi-biennial oscillation on West African Rainfall 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021 Abstract The quasi-biennial oscillation (QBO) is a global climate phenomenon of repeating cycles of tropical stratosphere winds, reversing direction from eastward to westward roughly every 14 months. However, unlike in Eastern Africa and India where QBO effect has been well studied, knowledge about its influence on West African rainfall and its variability is very scares. Using the five historical Coupled Models Intercomparison Project Phase 5 (CMIP5) simulations, (CMCC-CMS, HadGEM2-CC, HadGEM3-A, MPI-ESM-MR and MIROC-ESM-MR), this study investigates the influence of (QBO) on West African precipitation. The capability of the CMIP5 models to reproduce the quasi-biennial oscillation structure was evaluated while the influence of the QBO on West African precipitation was studied using wavelet analysis over the three zones of the regions (Sahel, Savannah, Guinea). Further, we studied the composite of rainfall variability during QBO and non-QBO years and also applied the composite of the QBO to investigate the dominant impacts of its phases (west and east) over the region. Results show that all models capture the general structure of the QBO well with varying biases but HadGEM2-CC produced results closest to observation (ERAINT). Therefore using this model with ERAINT and applying wavelet coherence analysis it was found that there is good coupling between QBO and precipitation over all three climatic zones of West Africa with the coherence of 0.6–0.8 in both ERA-Interim and HadGEM2-CC for the intra-annual (0.5–1.0 year) and inter-annual (2.0–4.0 years) timescales in all zones and at the two levels (30 and 50 hPa) considered. In addition, rainfall rates were found to be generally higher everywhere during the west phase of a QBO year than during the east phase but more so over the Savannah and Guinea region. Quasi-biennial oscillation (dpeaa)DE-He213 West Africa precipitation (dpeaa)DE-He213 West and east phase (dpeaa)DE-He213 QBO and non-QBO year (dpeaa)DE-He213 Omotosho, J. Bayo aut Klutse, Nana Ama Browne aut Abiodun, Babatunde J. aut Coulibaly, Amadou aut Enthalten in Modeling earth systems and environment Berlin : Springer, 2015 8(2021), 2 vom: 27. Mai, Seite 1461-1480 (DE-627)825736587 (DE-600)2821317-8 2363-6211 nnns volume:8 year:2021 number:2 day:27 month:05 pages:1461-1480 https://dx.doi.org/10.1007/s40808-021-01185-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 8 2021 2 27 05 1461-1480 |
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10.1007/s40808-021-01185-6 doi (DE-627)SPR04707664X (SPR)s40808-021-01185-6-e DE-627 ger DE-627 rakwb eng Ballo, Abdoulaye verfasserin (orcid)0000-0001-8523-5914 aut The influence of quasi-biennial oscillation on West African Rainfall 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021 Abstract The quasi-biennial oscillation (QBO) is a global climate phenomenon of repeating cycles of tropical stratosphere winds, reversing direction from eastward to westward roughly every 14 months. However, unlike in Eastern Africa and India where QBO effect has been well studied, knowledge about its influence on West African rainfall and its variability is very scares. Using the five historical Coupled Models Intercomparison Project Phase 5 (CMIP5) simulations, (CMCC-CMS, HadGEM2-CC, HadGEM3-A, MPI-ESM-MR and MIROC-ESM-MR), this study investigates the influence of (QBO) on West African precipitation. The capability of the CMIP5 models to reproduce the quasi-biennial oscillation structure was evaluated while the influence of the QBO on West African precipitation was studied using wavelet analysis over the three zones of the regions (Sahel, Savannah, Guinea). Further, we studied the composite of rainfall variability during QBO and non-QBO years and also applied the composite of the QBO to investigate the dominant impacts of its phases (west and east) over the region. Results show that all models capture the general structure of the QBO well with varying biases but HadGEM2-CC produced results closest to observation (ERAINT). Therefore using this model with ERAINT and applying wavelet coherence analysis it was found that there is good coupling between QBO and precipitation over all three climatic zones of West Africa with the coherence of 0.6–0.8 in both ERA-Interim and HadGEM2-CC for the intra-annual (0.5–1.0 year) and inter-annual (2.0–4.0 years) timescales in all zones and at the two levels (30 and 50 hPa) considered. In addition, rainfall rates were found to be generally higher everywhere during the west phase of a QBO year than during the east phase but more so over the Savannah and Guinea region. Quasi-biennial oscillation (dpeaa)DE-He213 West Africa precipitation (dpeaa)DE-He213 West and east phase (dpeaa)DE-He213 QBO and non-QBO year (dpeaa)DE-He213 Omotosho, J. Bayo aut Klutse, Nana Ama Browne aut Abiodun, Babatunde J. aut Coulibaly, Amadou aut Enthalten in Modeling earth systems and environment Berlin : Springer, 2015 8(2021), 2 vom: 27. Mai, Seite 1461-1480 (DE-627)825736587 (DE-600)2821317-8 2363-6211 nnns volume:8 year:2021 number:2 day:27 month:05 pages:1461-1480 https://dx.doi.org/10.1007/s40808-021-01185-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 8 2021 2 27 05 1461-1480 |
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10.1007/s40808-021-01185-6 doi (DE-627)SPR04707664X (SPR)s40808-021-01185-6-e DE-627 ger DE-627 rakwb eng Ballo, Abdoulaye verfasserin (orcid)0000-0001-8523-5914 aut The influence of quasi-biennial oscillation on West African Rainfall 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021 Abstract The quasi-biennial oscillation (QBO) is a global climate phenomenon of repeating cycles of tropical stratosphere winds, reversing direction from eastward to westward roughly every 14 months. However, unlike in Eastern Africa and India where QBO effect has been well studied, knowledge about its influence on West African rainfall and its variability is very scares. Using the five historical Coupled Models Intercomparison Project Phase 5 (CMIP5) simulations, (CMCC-CMS, HadGEM2-CC, HadGEM3-A, MPI-ESM-MR and MIROC-ESM-MR), this study investigates the influence of (QBO) on West African precipitation. The capability of the CMIP5 models to reproduce the quasi-biennial oscillation structure was evaluated while the influence of the QBO on West African precipitation was studied using wavelet analysis over the three zones of the regions (Sahel, Savannah, Guinea). Further, we studied the composite of rainfall variability during QBO and non-QBO years and also applied the composite of the QBO to investigate the dominant impacts of its phases (west and east) over the region. Results show that all models capture the general structure of the QBO well with varying biases but HadGEM2-CC produced results closest to observation (ERAINT). Therefore using this model with ERAINT and applying wavelet coherence analysis it was found that there is good coupling between QBO and precipitation over all three climatic zones of West Africa with the coherence of 0.6–0.8 in both ERA-Interim and HadGEM2-CC for the intra-annual (0.5–1.0 year) and inter-annual (2.0–4.0 years) timescales in all zones and at the two levels (30 and 50 hPa) considered. In addition, rainfall rates were found to be generally higher everywhere during the west phase of a QBO year than during the east phase but more so over the Savannah and Guinea region. Quasi-biennial oscillation (dpeaa)DE-He213 West Africa precipitation (dpeaa)DE-He213 West and east phase (dpeaa)DE-He213 QBO and non-QBO year (dpeaa)DE-He213 Omotosho, J. Bayo aut Klutse, Nana Ama Browne aut Abiodun, Babatunde J. aut Coulibaly, Amadou aut Enthalten in Modeling earth systems and environment Berlin : Springer, 2015 8(2021), 2 vom: 27. Mai, Seite 1461-1480 (DE-627)825736587 (DE-600)2821317-8 2363-6211 nnns volume:8 year:2021 number:2 day:27 month:05 pages:1461-1480 https://dx.doi.org/10.1007/s40808-021-01185-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 8 2021 2 27 05 1461-1480 |
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10.1007/s40808-021-01185-6 doi (DE-627)SPR04707664X (SPR)s40808-021-01185-6-e DE-627 ger DE-627 rakwb eng Ballo, Abdoulaye verfasserin (orcid)0000-0001-8523-5914 aut The influence of quasi-biennial oscillation on West African Rainfall 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021 Abstract The quasi-biennial oscillation (QBO) is a global climate phenomenon of repeating cycles of tropical stratosphere winds, reversing direction from eastward to westward roughly every 14 months. However, unlike in Eastern Africa and India where QBO effect has been well studied, knowledge about its influence on West African rainfall and its variability is very scares. Using the five historical Coupled Models Intercomparison Project Phase 5 (CMIP5) simulations, (CMCC-CMS, HadGEM2-CC, HadGEM3-A, MPI-ESM-MR and MIROC-ESM-MR), this study investigates the influence of (QBO) on West African precipitation. The capability of the CMIP5 models to reproduce the quasi-biennial oscillation structure was evaluated while the influence of the QBO on West African precipitation was studied using wavelet analysis over the three zones of the regions (Sahel, Savannah, Guinea). Further, we studied the composite of rainfall variability during QBO and non-QBO years and also applied the composite of the QBO to investigate the dominant impacts of its phases (west and east) over the region. Results show that all models capture the general structure of the QBO well with varying biases but HadGEM2-CC produced results closest to observation (ERAINT). Therefore using this model with ERAINT and applying wavelet coherence analysis it was found that there is good coupling between QBO and precipitation over all three climatic zones of West Africa with the coherence of 0.6–0.8 in both ERA-Interim and HadGEM2-CC for the intra-annual (0.5–1.0 year) and inter-annual (2.0–4.0 years) timescales in all zones and at the two levels (30 and 50 hPa) considered. In addition, rainfall rates were found to be generally higher everywhere during the west phase of a QBO year than during the east phase but more so over the Savannah and Guinea region. Quasi-biennial oscillation (dpeaa)DE-He213 West Africa precipitation (dpeaa)DE-He213 West and east phase (dpeaa)DE-He213 QBO and non-QBO year (dpeaa)DE-He213 Omotosho, J. Bayo aut Klutse, Nana Ama Browne aut Abiodun, Babatunde J. aut Coulibaly, Amadou aut Enthalten in Modeling earth systems and environment Berlin : Springer, 2015 8(2021), 2 vom: 27. Mai, Seite 1461-1480 (DE-627)825736587 (DE-600)2821317-8 2363-6211 nnns volume:8 year:2021 number:2 day:27 month:05 pages:1461-1480 https://dx.doi.org/10.1007/s40808-021-01185-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 8 2021 2 27 05 1461-1480 |
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Enthalten in Modeling earth systems and environment 8(2021), 2 vom: 27. Mai, Seite 1461-1480 volume:8 year:2021 number:2 day:27 month:05 pages:1461-1480 |
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Enthalten in Modeling earth systems and environment 8(2021), 2 vom: 27. Mai, Seite 1461-1480 volume:8 year:2021 number:2 day:27 month:05 pages:1461-1480 |
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Quasi-biennial oscillation West Africa precipitation West and east phase QBO and non-QBO year |
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Ballo, Abdoulaye @@aut@@ Omotosho, J. Bayo @@aut@@ Klutse, Nana Ama Browne @@aut@@ Abiodun, Babatunde J. @@aut@@ Coulibaly, Amadou @@aut@@ |
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However, unlike in Eastern Africa and India where QBO effect has been well studied, knowledge about its influence on West African rainfall and its variability is very scares. Using the five historical Coupled Models Intercomparison Project Phase 5 (CMIP5) simulations, (CMCC-CMS, HadGEM2-CC, HadGEM3-A, MPI-ESM-MR and MIROC-ESM-MR), this study investigates the influence of (QBO) on West African precipitation. The capability of the CMIP5 models to reproduce the quasi-biennial oscillation structure was evaluated while the influence of the QBO on West African precipitation was studied using wavelet analysis over the three zones of the regions (Sahel, Savannah, Guinea). Further, we studied the composite of rainfall variability during QBO and non-QBO years and also applied the composite of the QBO to investigate the dominant impacts of its phases (west and east) over the region. Results show that all models capture the general structure of the QBO well with varying biases but HadGEM2-CC produced results closest to observation (ERAINT). Therefore using this model with ERAINT and applying wavelet coherence analysis it was found that there is good coupling between QBO and precipitation over all three climatic zones of West Africa with the coherence of 0.6–0.8 in both ERA-Interim and HadGEM2-CC for the intra-annual (0.5–1.0 year) and inter-annual (2.0–4.0 years) timescales in all zones and at the two levels (30 and 50 hPa) considered. In addition, rainfall rates were found to be generally higher everywhere during the west phase of a QBO year than during the east phase but more so over the Savannah and Guinea region.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Quasi-biennial oscillation</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">West Africa precipitation</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">West and east phase</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">QBO and non-QBO year</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Omotosho, J. Bayo</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Klutse, Nana Ama Browne</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Abiodun, Babatunde J.</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Coulibaly, Amadou</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Modeling earth systems and environment</subfield><subfield code="d">Berlin : Springer, 2015</subfield><subfield code="g">8(2021), 2 vom: 27. 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Ballo, Abdoulaye |
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Ballo, Abdoulaye misc Quasi-biennial oscillation misc West Africa precipitation misc West and east phase misc QBO and non-QBO year The influence of quasi-biennial oscillation on West African Rainfall |
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The influence of quasi-biennial oscillation on West African Rainfall Quasi-biennial oscillation (dpeaa)DE-He213 West Africa precipitation (dpeaa)DE-He213 West and east phase (dpeaa)DE-He213 QBO and non-QBO year (dpeaa)DE-He213 |
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misc Quasi-biennial oscillation misc West Africa precipitation misc West and east phase misc QBO and non-QBO year |
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misc Quasi-biennial oscillation misc West Africa precipitation misc West and east phase misc QBO and non-QBO year |
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The influence of quasi-biennial oscillation on West African Rainfall |
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The influence of quasi-biennial oscillation on West African Rainfall |
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Modeling earth systems and environment |
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influence of quasi-biennial oscillation on west african rainfall |
title_auth |
The influence of quasi-biennial oscillation on West African Rainfall |
abstract |
Abstract The quasi-biennial oscillation (QBO) is a global climate phenomenon of repeating cycles of tropical stratosphere winds, reversing direction from eastward to westward roughly every 14 months. However, unlike in Eastern Africa and India where QBO effect has been well studied, knowledge about its influence on West African rainfall and its variability is very scares. Using the five historical Coupled Models Intercomparison Project Phase 5 (CMIP5) simulations, (CMCC-CMS, HadGEM2-CC, HadGEM3-A, MPI-ESM-MR and MIROC-ESM-MR), this study investigates the influence of (QBO) on West African precipitation. The capability of the CMIP5 models to reproduce the quasi-biennial oscillation structure was evaluated while the influence of the QBO on West African precipitation was studied using wavelet analysis over the three zones of the regions (Sahel, Savannah, Guinea). Further, we studied the composite of rainfall variability during QBO and non-QBO years and also applied the composite of the QBO to investigate the dominant impacts of its phases (west and east) over the region. Results show that all models capture the general structure of the QBO well with varying biases but HadGEM2-CC produced results closest to observation (ERAINT). Therefore using this model with ERAINT and applying wavelet coherence analysis it was found that there is good coupling between QBO and precipitation over all three climatic zones of West Africa with the coherence of 0.6–0.8 in both ERA-Interim and HadGEM2-CC for the intra-annual (0.5–1.0 year) and inter-annual (2.0–4.0 years) timescales in all zones and at the two levels (30 and 50 hPa) considered. In addition, rainfall rates were found to be generally higher everywhere during the west phase of a QBO year than during the east phase but more so over the Savannah and Guinea region. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021 |
abstractGer |
Abstract The quasi-biennial oscillation (QBO) is a global climate phenomenon of repeating cycles of tropical stratosphere winds, reversing direction from eastward to westward roughly every 14 months. However, unlike in Eastern Africa and India where QBO effect has been well studied, knowledge about its influence on West African rainfall and its variability is very scares. Using the five historical Coupled Models Intercomparison Project Phase 5 (CMIP5) simulations, (CMCC-CMS, HadGEM2-CC, HadGEM3-A, MPI-ESM-MR and MIROC-ESM-MR), this study investigates the influence of (QBO) on West African precipitation. The capability of the CMIP5 models to reproduce the quasi-biennial oscillation structure was evaluated while the influence of the QBO on West African precipitation was studied using wavelet analysis over the three zones of the regions (Sahel, Savannah, Guinea). Further, we studied the composite of rainfall variability during QBO and non-QBO years and also applied the composite of the QBO to investigate the dominant impacts of its phases (west and east) over the region. Results show that all models capture the general structure of the QBO well with varying biases but HadGEM2-CC produced results closest to observation (ERAINT). Therefore using this model with ERAINT and applying wavelet coherence analysis it was found that there is good coupling between QBO and precipitation over all three climatic zones of West Africa with the coherence of 0.6–0.8 in both ERA-Interim and HadGEM2-CC for the intra-annual (0.5–1.0 year) and inter-annual (2.0–4.0 years) timescales in all zones and at the two levels (30 and 50 hPa) considered. In addition, rainfall rates were found to be generally higher everywhere during the west phase of a QBO year than during the east phase but more so over the Savannah and Guinea region. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021 |
abstract_unstemmed |
Abstract The quasi-biennial oscillation (QBO) is a global climate phenomenon of repeating cycles of tropical stratosphere winds, reversing direction from eastward to westward roughly every 14 months. However, unlike in Eastern Africa and India where QBO effect has been well studied, knowledge about its influence on West African rainfall and its variability is very scares. Using the five historical Coupled Models Intercomparison Project Phase 5 (CMIP5) simulations, (CMCC-CMS, HadGEM2-CC, HadGEM3-A, MPI-ESM-MR and MIROC-ESM-MR), this study investigates the influence of (QBO) on West African precipitation. The capability of the CMIP5 models to reproduce the quasi-biennial oscillation structure was evaluated while the influence of the QBO on West African precipitation was studied using wavelet analysis over the three zones of the regions (Sahel, Savannah, Guinea). Further, we studied the composite of rainfall variability during QBO and non-QBO years and also applied the composite of the QBO to investigate the dominant impacts of its phases (west and east) over the region. Results show that all models capture the general structure of the QBO well with varying biases but HadGEM2-CC produced results closest to observation (ERAINT). Therefore using this model with ERAINT and applying wavelet coherence analysis it was found that there is good coupling between QBO and precipitation over all three climatic zones of West Africa with the coherence of 0.6–0.8 in both ERA-Interim and HadGEM2-CC for the intra-annual (0.5–1.0 year) and inter-annual (2.0–4.0 years) timescales in all zones and at the two levels (30 and 50 hPa) considered. In addition, rainfall rates were found to be generally higher everywhere during the west phase of a QBO year than during the east phase but more so over the Savannah and Guinea region. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2021 |
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container_issue |
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title_short |
The influence of quasi-biennial oscillation on West African Rainfall |
url |
https://dx.doi.org/10.1007/s40808-021-01185-6 |
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author2 |
Omotosho, J. Bayo Klutse, Nana Ama Browne Abiodun, Babatunde J. Coulibaly, Amadou |
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Omotosho, J. Bayo Klutse, Nana Ama Browne Abiodun, Babatunde J. Coulibaly, Amadou |
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doi_str |
10.1007/s40808-021-01185-6 |
up_date |
2024-07-04T01:45:26.158Z |
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score |
7.3996468 |