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Campozano, L.; Trachte, K.; Celleri, R.; Samaniego, E.; Bendix, J.; Crist&oacute;bal, A. &amp; Mejia, J.F. (2018): <b>Climatology and Teleconnections of Mesoscale Convective Systems in an Andean Basin in Southern Ecuador: The Case of the Paute Basin</b>. <i>Advances in Meteorology</i> <b>2018</b>, 1-13.

Resource Description

Title: Climatology and Teleconnections of Mesoscale Convective Systems in an Andean Basin in Southern Ecuador: The Case of the Paute Basin
FOR816dw ID: 1725
Publication Date: 2018-07-25
License and Usage Rights:
Resource Owner(s):
Individual: Lenin Campozano
Contact:
Individual: Katja Trachte
Contact:
Individual: Rolando Celleri
Contact:
Individual: Esteban Samaniego
Contact:
Individual: Jörg Bendix
Contact:
Individual: Albuja Cristóbal
Contact:
Individual: John F. Mejia
Contact:
Abstract:
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.
Keywords:
| Andes | Meteorology |
Literature type specific fields:
ARTICLE
Journal: Advances in Meteorology
Volume: 2018
Page Range: 1-13
ISSN: 1687-9317
Metadata Provider:
Individual: Maik Dobbermann
Contact:
Online Distribution:
Download File: http://www.lcrs.de/publications.do?citid=1725


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