Dynamic Characteristics of the Circulation and Diurnal Spatial Cycle of Outgoing Longwave Radiation in the Different Phases of the Madden–Julian Oscillation during the Formation of the South Atlantic Convergence Zone

In this work, we verified the formation of the South Atlantic Convergence Zone (SACZ) during the active, unfavorable, and transition phases of the Madden–Julian Oscillation (MJO), as well as the diurnal spatial variability in the estimated Outgoing Longwave Radiation (OLR) data. The real-time multiv...

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Autores principales:	Liviany P. Viana, Jhonatan A. A. Manco, Dirceu Luis Herdies
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	SACZ MJO CSLs Meteorology. Climatology QC851-999
Acceso en línea:	https://doaj.org/article/f9a49feb62ce4ba9b591be9d1868b1bf
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spelling	oai:doaj.org-article:f9a49feb62ce4ba9b591be9d1868b1bf2021-11-25T16:44:07ZDynamic Characteristics of the Circulation and Diurnal Spatial Cycle of Outgoing Longwave Radiation in the Different Phases of the Madden–Julian Oscillation during the Formation of the South Atlantic Convergence Zone10.3390/atmos121113992073-4433https://doaj.org/article/f9a49feb62ce4ba9b591be9d1868b1bf2021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4433/12/11/1399https://doaj.org/toc/2073-4433In this work, we verified the formation of the South Atlantic Convergence Zone (SACZ) during the active, unfavorable, and transition phases of the Madden–Julian Oscillation (MJO), as well as the diurnal spatial variability in the estimated Outgoing Longwave Radiation (OLR) data. The real-time multivariate index (RMM) and the composites of meteorological variables were used, along with the temporal average of the estimated OLR data. All the different patterns for the average period of SACZ showed classic behavior: well-organized and with meteorological variables in phases throughout the troposphere. However, some differences were evident in the organization of each phase of the MJO: at 200 hPa, the Bolivian High (BH) was more flattened during the active phase pattern than in the unfavorable and transition phases, being wider and with a wavier trough embedded in the western flow; at medium levels, the subtropical highs appeared more defined and with a very wide trough; the trough supported the frontal systems on the surface and, together with the subtropical highs, concentrated all the moisture in this layer. In the OLR dataset, the formation of the Coast Squall Line (CSL) occurred during SACZ events in the active phase and MJO transition, whereas in the unfavorable phase, this system was not observed.Liviany P. VianaJhonatan A. A. MancoDirceu Luis HerdiesMDPI AGarticleSACZMJOCSLsMeteorology. ClimatologyQC851-999ENAtmosphere, Vol 12, Iss 1399, p 1399 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	SACZ MJO CSLs Meteorology. Climatology QC851-999
spellingShingle	SACZ MJO CSLs Meteorology. Climatology QC851-999 Liviany P. Viana Jhonatan A. A. Manco Dirceu Luis Herdies Dynamic Characteristics of the Circulation and Diurnal Spatial Cycle of Outgoing Longwave Radiation in the Different Phases of the Madden–Julian Oscillation during the Formation of the South Atlantic Convergence Zone
description	In this work, we verified the formation of the South Atlantic Convergence Zone (SACZ) during the active, unfavorable, and transition phases of the Madden–Julian Oscillation (MJO), as well as the diurnal spatial variability in the estimated Outgoing Longwave Radiation (OLR) data. The real-time multivariate index (RMM) and the composites of meteorological variables were used, along with the temporal average of the estimated OLR data. All the different patterns for the average period of SACZ showed classic behavior: well-organized and with meteorological variables in phases throughout the troposphere. However, some differences were evident in the organization of each phase of the MJO: at 200 hPa, the Bolivian High (BH) was more flattened during the active phase pattern than in the unfavorable and transition phases, being wider and with a wavier trough embedded in the western flow; at medium levels, the subtropical highs appeared more defined and with a very wide trough; the trough supported the frontal systems on the surface and, together with the subtropical highs, concentrated all the moisture in this layer. In the OLR dataset, the formation of the Coast Squall Line (CSL) occurred during SACZ events in the active phase and MJO transition, whereas in the unfavorable phase, this system was not observed.
format	article
author	Liviany P. Viana Jhonatan A. A. Manco Dirceu Luis Herdies
author_facet	Liviany P. Viana Jhonatan A. A. Manco Dirceu Luis Herdies
author_sort	Liviany P. Viana
title	Dynamic Characteristics of the Circulation and Diurnal Spatial Cycle of Outgoing Longwave Radiation in the Different Phases of the Madden–Julian Oscillation during the Formation of the South Atlantic Convergence Zone
title_short	Dynamic Characteristics of the Circulation and Diurnal Spatial Cycle of Outgoing Longwave Radiation in the Different Phases of the Madden–Julian Oscillation during the Formation of the South Atlantic Convergence Zone
title_full	Dynamic Characteristics of the Circulation and Diurnal Spatial Cycle of Outgoing Longwave Radiation in the Different Phases of the Madden–Julian Oscillation during the Formation of the South Atlantic Convergence Zone
title_fullStr	Dynamic Characteristics of the Circulation and Diurnal Spatial Cycle of Outgoing Longwave Radiation in the Different Phases of the Madden–Julian Oscillation during the Formation of the South Atlantic Convergence Zone
title_full_unstemmed	Dynamic Characteristics of the Circulation and Diurnal Spatial Cycle of Outgoing Longwave Radiation in the Different Phases of the Madden–Julian Oscillation during the Formation of the South Atlantic Convergence Zone
title_sort	dynamic characteristics of the circulation and diurnal spatial cycle of outgoing longwave radiation in the different phases of the madden–julian oscillation during the formation of the south atlantic convergence zone
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f9a49feb62ce4ba9b591be9d1868b1bf
work_keys_str_mv	AT livianypviana dynamiccharacteristicsofthecirculationanddiurnalspatialcycleofoutgoinglongwaveradiationinthedifferentphasesofthemaddenjulianoscillationduringtheformationofthesouthatlanticconvergencezone AT jhonatanaamanco dynamiccharacteristicsofthecirculationanddiurnalspatialcycleofoutgoinglongwaveradiationinthedifferentphasesofthemaddenjulianoscillationduringtheformationofthesouthatlanticconvergencezone AT dirceuluisherdies dynamiccharacteristicsofthecirculationanddiurnalspatialcycleofoutgoinglongwaveradiationinthedifferentphasesofthemaddenjulianoscillationduringtheformationofthesouthatlanticconvergencezone
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Dynamic Characteristics of the Circulation and Diurnal Spatial Cycle of Outgoing Longwave Radiation in the Different Phases of the Madden–Julian Oscillation during the Formation of the South Atlantic Convergence Zone

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