| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | mtc-m16b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repository | cptec.inpe.br/walmeida/2004/12.22.15.42 |
| Last Update | 2004:12.22.02.00.00 (UTC) administrator |
| Metadata Repository | cptec.inpe.br/walmeida/2004/12.22.15.42.34 |
| Metadata Last Update | 2022:03.26.18.03.25 (UTC) administrator |
| Secondary Key | INPE-11864-PRE/7211 |
| Citation Key | GanMosc:2004:AvApWe |
| Title | An avaliation of the applicability of west-central Brazil summer monsoon indexes  |
| Format | On-line |
| Project | Climatologia dinâmica |
| Year | 2004 |
| Access Date | 2024, May 20 |
| Secondary Type | PRE CI |
| Number of Files | 1 |
| Size | 421 KiB |
| 2. Context | |
| Author | 1 Gan, Manoel Alonso 2 Moscati, Marley Cavalcanti de Lima |
| Resume Identifier | 1 8JMKD3MGP5W/3C9JHNM |
| Group | 1 DMA-INPE-MCT-BR 2 DMA-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais, Centro de Previsão do Tempo e Estudos Climáticos (INPE.CPTEC) 2 Instituto Nacional de Pesquisas Espaciais, Centro de Previsão do Tempo e Estudos Climáticos (INPE.CPTEC) |
| Author e-Mail Address | 1 alonso@cptec.inpe.br 2 marley@cptec.inpe.br |
| e-Mail Address | atus@cptec.inpe.br |
| Conference Name | International Clivar Science Conference, 1. |
| Conference Location | Baltimore |
| Date | 21-25 jun. |
| Tertiary Type | Posters |
| History (UTC) | 2005-01-12 17:56:08 :: fabia -> administrator :: 2006-11-17 21:49:08 :: administrator -> estagiario :: 2008-04-18 16:41:48 :: estagiario -> administrator :: 2008-06-10 21:24:10 :: administrator -> estagiario :: 2010-05-11 16:55:37 :: estagiario -> administrator :: 2022-03-26 18:03:25 :: administrator -> marciana :: 2004 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | METEOROLOGY Monsoons Brazil METEOROLOGIA Monções Brasil |
| Abstract | The West-Central Brazil (WCB) region contains the western portion of the Brazilian Planalto and the headwaters of major rivers, such as Araguaia and Paraguay, which flow into the Amazon and La Plata basins, respectively. It includes a portion of the summertime rainfall maximum where the mean annual cycle of circulation is highly related to the South America monsoon system. The WCB has some monsoon characteristics such as upper level anticiclonic circulation, low-level depression and a temperature maximum. However, the wind reverse does not happen as in Asian monsoon, just the zonal wind changes its direction. Several criteria for determining rainy season onset and demise dates have been applied to the monsoon regions of the world, based on rainfall, winds and cloudiness, among others. The aim here is evaluate the applicability of some monsoon indexes to identify the onset and demise dates and the quality of the rainy season in the WCB. The indexes used are OLR (OI), precipitation and 850-hPa zonal wind (PZWI), vertical shear of meridional wind (SMWI) and vertical shear of zonal wind (SZWI). The data used in this study are pentad of OLR, daily averaged fields of wind from the NCEP/NCAR reanalysis and gridded daily precipitation analyses for Brazil, from the Climate Prediction Center. The period used in all dataset is July/1979-June/1997.The SMWI and SZWI are defined by the difference of 850- and 200-hPa meridional wind in the point 10oS-40oW and the zonal wind in 25oS-55oW point, respectively. These points are selected because the correlation between the precipitation and the shear component wind was higher. Using the PZWI we define the onset (demise) of the rainy season as the first occurrence of 850-hPa westerly (easterly) winds along 60ºW in the band 10ºS-20ºS together with rainfall rates greater (less) than 4 mmd-1 for at least 75% of the subsequent 8 pentads. By OI we define onset (demise) when the OLR mean in the WCB area (10oS-20oS; 50oW-60oW) is less (more) than 235Wm-2 at least 6 of the subsequent 8 pentad. Preliminary results show that the OI and PZWI can be used to identify the onset and demise dates. The SMWI in shows a good relationship with the onset and demise of the some rainy seasons studied and the SZWI did not show good results. Others discussions are also made about the applicability of these indexes in the predictability of the rainy season quality. |
| Area | MET |
| Arrangement | urlib.net > BDMCI > Fonds > Produção até 2016 > DMA > An avaliation of... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| data URL | http://urlib.net/ibi/cptec.inpe.br/walmeida/2004/12.22.15.42 |
| zipped data URL | http://urlib.net/zip/cptec.inpe.br/walmeida/2004/12.22.15.42 |
| Language | en |
| Target File | Gan_An avaliation.pdf |
| User Group | administrator fabia estagiario administrator |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Read Permission | allow from all |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/46JKC45 |
| Citing Item List | sid.inpe.br/bibdigital/2022/03.26.17.47 1 sid.inpe.br/mtc-m21/2012/07.13.14.54.28 1 |
| Host Collection | cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notes | |
| Empty Fields | archivingpolicy archivist booktitle callnumber copyright creatorhistory descriptionlevel dissemination documentstage doi edition editor identifier isbn issn label lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress publisher publisheraddress readergroup rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject tertiarymark type url versiontype volume |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |