Climatology and Teleconnections of Mesoscale Convective Systems in an Andean Basin in Southern Ecuador: The Case of the Paute Basin
Mesoscale convective systems (MCSs) climatology, the thermodynamic and dynamical variables, and teleconnections influencing MCSs development are assessed for the Paute basin (PB) in the Ecuadorian Andes from 2000 to 2009. The seasonality of MCSs occurrence shows a bimodal pattern, with higher occurr...
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Wiley
2018-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2018/4259191 |
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| author | Lenin Campozano Katja Trachte Rolando Célleri Esteban Samaniego Joerg Bendix Cristóbal Albuja John F. Mejia |
| author_facet | Lenin Campozano Katja Trachte Rolando Célleri Esteban Samaniego Joerg Bendix Cristóbal Albuja John F. Mejia |
| author_sort | Lenin Campozano |
| collection | DOAJ |
| description | Mesoscale convective systems (MCSs) climatology, the thermodynamic and dynamical variables, and teleconnections influencing MCSs development are assessed for the Paute basin (PB) in the Ecuadorian Andes from 2000 to 2009. The seasonality of MCSs occurrence shows a bimodal pattern, with higher occurrence during March-April (MA) and October-November (ON), analogous to the regional rainfall seasonality. The diurnal cycle of MCSs shows a clear nocturnal occurrence, especially during the MA and ON periods. Interestingly, despite the higher occurrence of MCSs during the rainy seasons, the monthly size relative frequency remains fairly constant throughout the year. On the east of the PB, the persistent high convective available potential and low convective inhibition values from midday to nighttime are likely related to the nocturnal development of the MCSs. A significant positive correlation between the MCSs occurrence to the west of the PB and the Trans-Niño index was found, suggesting that ENSO is an important source of interannual variability of MCSs frequency with increasing development of MCSs during warm ENSO phases. On the east of the PB, the variability of MCSs is positively correlated to the tropical Atlantic sea surface temperature anomalies south of the equator, due to the variability of the Atlantic subtropical anticyclone, showing main departures from this relation when anomalous conditions occur in the tropical Pacific due to ENSO. |
| format | Article |
| id | doaj-art-a3b0c233a9354e8a82d4fdd6efa1e12e |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
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| series | Advances in Meteorology |
| spelling | doaj-art-a3b0c233a9354e8a82d4fdd6efa1e12e2025-02-03T01:02:02ZengWileyAdvances in Meteorology1687-93091687-93172018-01-01201810.1155/2018/42591914259191Climatology and Teleconnections of Mesoscale Convective Systems in an Andean Basin in Southern Ecuador: The Case of the Paute BasinLenin Campozano0Katja Trachte1Rolando Célleri2Esteban Samaniego3Joerg Bendix4Cristóbal Albuja5John F. Mejia6Departamento de Recursos Hídricos y Ciencias Ambientales, Universidad de Cuenca, Cuenca, EcuadorLaboratory for Climatology and Remote Sensing (LCRS), Faculty of Geography, Philipps-University Marburg, Deutschhausstraße 10, 35032 Marburg, GermanyDepartamento de Recursos Hídricos y Ciencias Ambientales, Universidad de Cuenca, Cuenca, EcuadorDepartamento de Recursos Hídricos y Ciencias Ambientales, Universidad de Cuenca, Cuenca, EcuadorLaboratory for Climatology and Remote Sensing (LCRS), Faculty of Geography, Philipps-University Marburg, Deutschhausstraße 10, 35032 Marburg, GermanyDepartamento de Recursos Hídricos y Ciencias Ambientales, Universidad de Cuenca, Cuenca, EcuadorDepartment of Atmospheric Sciences, Desert Research Institute, Reno, NV, USAMesoscale convective systems (MCSs) climatology, the thermodynamic and dynamical variables, and teleconnections influencing MCSs development are assessed for the Paute basin (PB) in the Ecuadorian Andes from 2000 to 2009. The seasonality of MCSs occurrence shows a bimodal pattern, with higher occurrence during March-April (MA) and October-November (ON), analogous to the regional rainfall seasonality. The diurnal cycle of MCSs shows a clear nocturnal occurrence, especially during the MA and ON periods. Interestingly, despite the higher occurrence of MCSs during the rainy seasons, the monthly size relative frequency remains fairly constant throughout the year. On the east of the PB, the persistent high convective available potential and low convective inhibition values from midday to nighttime are likely related to the nocturnal development of the MCSs. A significant positive correlation between the MCSs occurrence to the west of the PB and the Trans-Niño index was found, suggesting that ENSO is an important source of interannual variability of MCSs frequency with increasing development of MCSs during warm ENSO phases. On the east of the PB, the variability of MCSs is positively correlated to the tropical Atlantic sea surface temperature anomalies south of the equator, due to the variability of the Atlantic subtropical anticyclone, showing main departures from this relation when anomalous conditions occur in the tropical Pacific due to ENSO.http://dx.doi.org/10.1155/2018/4259191 |
| spellingShingle | Lenin Campozano Katja Trachte Rolando Célleri Esteban Samaniego Joerg Bendix Cristóbal Albuja John F. Mejia Climatology and Teleconnections of Mesoscale Convective Systems in an Andean Basin in Southern Ecuador: The Case of the Paute Basin Advances in Meteorology |
| title | Climatology and Teleconnections of Mesoscale Convective Systems in an Andean Basin in Southern Ecuador: The Case of the Paute Basin |
| title_full | Climatology and Teleconnections of Mesoscale Convective Systems in an Andean Basin in Southern Ecuador: The Case of the Paute Basin |
| title_fullStr | Climatology and Teleconnections of Mesoscale Convective Systems in an Andean Basin in Southern Ecuador: The Case of the Paute Basin |
| title_full_unstemmed | Climatology and Teleconnections of Mesoscale Convective Systems in an Andean Basin in Southern Ecuador: The Case of the Paute Basin |
| title_short | Climatology and Teleconnections of Mesoscale Convective Systems in an Andean Basin in Southern Ecuador: The Case of the Paute Basin |
| title_sort | climatology and teleconnections of mesoscale convective systems in an andean basin in southern ecuador the case of the paute basin |
| url | http://dx.doi.org/10.1155/2018/4259191 |
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