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1. Identity statement
Reference TypeJournal Article
Sitemtc-m21d.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier8JMKD3MGP3W34T/492TSMB
Repositorysid.inpe.br/mtc-m21d/2023/05.02.11.57   (restricted access)
Last Update2023:05.02.11.57.23 (UTC) simone
Metadata Repositorysid.inpe.br/mtc-m21d/2023/05.02.11.57.23
Metadata Last Update2024:01.02.17.16.42 (UTC) administrator
DOI10.1007/s00704-023-04375-7
ISSN0177-798X
Citation KeyFialhoCarvGanVeig:2023:MeCoPe
TitleMechanisms controlling persistent South Atlantic Convergence Zone events on intraseasonal timescales
Year2023
MonthJan.
Access Date2024, May 20
Type of Workjournal article
Secondary TypePRE PI
Number of Files1
Size8719 KiB
2. Context
Author1 Fialho, Wendell Max Barbosa
2 Carvalho, Leila M. V.
3 Gan, Manoel Alonso
4 Veiga, Sandro F.
Resume Identifier1
2
3 8JMKD3MGP5W/3C9JHNM
ORCID1 0000-0001-7997-9618
2 0000-0002-8662-1953
3 0000-0003-1322-1374
4 0000-0002-4546-1893
Group1 MET-MET-DIPGR-INPE-MCTI-GOV-BR
2
3 DIPTC-CGCT-INPE-MCTI-GOV-BR
Affiliation1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 University of California
3 Instituto Nacional de Pesquisas Espaciais (INPE)
4 Nanjing University
Author e-Mail Address1 wendell.falho@inpe.br
2 leila@eri.ucsb.edu
3 manoel.gan@inpe.br
4 sandroveiga@nju.edu.cn
JournalTheoretical and Applied Climatology
Volume152
Pages75-96
Secondary MarkA1_GEOGRAFIA A1_ENGENHARIAS_I A2_INTERDISCIPLINAR A2_GEOCIÊNCIAS A2_CIÊNCIAS_AMBIENTAIS A2_CIÊNCIAS_AGRÁRIAS_I B1_BIODIVERSIDADE B1_ARQUITETURA_E_URBANISMO B2_CIÊNCIAS_BIOLÓGICAS_I B3_ASTRONOMIA_/_FÍSICA
History (UTC)2023-05-02 11:57:23 :: simone -> administrator ::
2023-05-02 11:57:23 :: administrator -> simone :: 2023
2023-05-02 11:57:56 :: simone -> administrator :: 2023
2024-01-02 17:16:42 :: administrator -> simone :: 2023
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Content TypeExternal Contribution
Version Typepublisher
AbstractThe South Atlantic Convergence Zone (SACZ) is an important component of the South American Monsoon System. It is characterized by a persistent convective band with northwest-southeast orientation extending from tropical South America to Southwestern South Atlantic. The SACZ exhibits remarkable spatial and temporal variability and plays a critical role in regulating precipitation intensity and totals for millions of people living in South America. This study investigates mechanisms explaining persistent SACZ events (longer than 7 days) that often cause floods and landslides. This analysis extends from October 1996 to April 2014. To investigate the potential for subseasonal forecast of these events, this study focuses on mechanisms on intraseasonal timescales (20-90 days). We show that persistent SACZ events are preceded by a semi-stationary midlatitude Rossby wave train over the South Pacific with an equivalent barotropic structure that turns equatorward after crossing subtropical latitudes of South America. One distinctive feature of these events is the intensification of a trough in midlatitudes South Pacific westward of the Chilean coast preceding the events. Moreover, cyclonic persistent anomalies associated with the wave train over the western South Atlantic organize the oceanic SACZ six to 7 days before the events. Concomitantly, a persistent region with negative sea surface temperature (SST) anomalies emerges southward of the SACZ (between 30 degrees S and 50 degrees S) adjacent to the South American coast, likely resulting from the coupling between cyclonic circulation and the oceanic SACZ. Together, these processes strengthen the low-level westerlies on the SACZ equatorward side, causing the continental SACZ to intensify sustained by anomalous cyclonic circulation and enhanced southeastward moisture transport over land. Consequently, convection increases over the continent and the SACZ maintains active for long periods. Although shorter SACZ events (4 days) appear associated with the presence of a midlatitude wave train, their transient nature leads to distinct coupling effects. These observations are relevant for predicting long-lasting SACZ events.
AreaMET
Arrangement 1urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > MET > Mechanisms controlling persistent...
Arrangement 2urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCT > Mechanisms controlling persistent...
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4. Conditions of access and use
Languageen
Target Files00704-023-04375-7.pdf
User Groupsimone
Reader Groupadministrator
simone
Visibilityshown
Archiving Policydenypublisher denyfinaldraft12
Read Permissiondeny from all and allow from 150.163
Update Permissionnot transferred
5. Allied materials
Next Higher Units8JMKD3MGPCW/3F35TRS
8JMKD3MGPCW/46KUATE
Citing Item Listsid.inpe.br/bibdigital/2022/04.03.22.23 3
sid.inpe.br/mtc-m21/2012/07.13.14.54.28 2
sid.inpe.br/bibdigital/2013/10.15.01.34 2
DisseminationWEBSCI; PORTALCAPES; MGA.
Host Collectionurlib.net/www/2021/06.04.03.40
6. Notes
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