| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | mtc-m16b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | x6e6X3pFwXQZ3DUS8rS5/ycbdC |
| Repository | cptec.inpe.br/walmeida/2003/05.19.14.33 |
| Last Update | 2015:11.17.14.28.15 (UTC) marciana |
| Metadata Repository | cptec.inpe.br/walmeida/2003/05.19.14.33.48 |
| Metadata Last Update | 2021:02.10.19.02.04 (UTC) administrator |
| Secondary Key | INPE-10220-PRE/5741 |
| Citation Key | CavalcantiKous:2003:ClSoAm |
| Title | Climatology of South American cold fronts  |
| Format | Papel |
| Year | 2003 |
| Secondary Date | 20030324 |
| Access Date | 2024, Dec. 26 |
| Secondary Type | PRE CI |
| Number of Files | 1 |
| Size | 213 KiB |
| 2. Context | |
| Author | 1 Cavalcanti, Iracema Fonseca Albuquerque 2 Kousky, Vermon Edgar |
| Group | 1 DMD-INPE-MCT-BR |
| Affiliation | 1 CPTEC/INPE, Cachoeira Paulista, SP, Brazil 2 NOAA/NCEP/CPC, Camp Springs, MD |
| e-Mail Address | deicy@cptec.inpe.br |
| Conference Name | International Conference on Southern Hemisphere Meteorology and Oceanography, 7. |
| Conference Location | Wellington, New Zealand |
| Date | 24-28 Mar |
| Publisher | American Meteorological Society |
| Pages | 121-122 |
| Book Title | Proceedings |
| Tertiary Type | Artigos |
| History (UTC) | 2012-10-21 17:52:34 :: administrator -> Deicy :: 2003 2013-02-20 14:52:28 :: Deicy -> administrator :: 2003 2015-04-15 11:56:37 :: administrator -> marciana :: 2003 2015-11-17 14:28:15 :: marciana -> administrator :: 2003 2021-02-10 19:02:04 :: administrator -> marciana :: 2003 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Keywords | Meteorology climatology |
| Abstract | Frontal systems are seen to affect the weather over South America during all seasons of the year. They are easilly visualized in satellite images as they advance from southwest to northeast over the continent. In this study, NCEP/NCAR reanalysis data are used to compute a climatology of cold fronts over South America during the period of 1979 to 2000 and to determine the associated atmospheric circulation features. The analysis is performed seasonally and monthly, using combined criteria for temperature, pressure and wind. Possible frost cases are identified and the main atmospheric characteristics and evolution are discussed. The results show two main tracks for frontal systems over the continent, one in the interior, extending from northern Argentina northward to the western Amazon region and the other one along the east coast of Brazil. There is a gradual increase in the number of systems that reach lower latitudes, from DJF to JJA. Over southern Brazil the number increases in September and October and the minimum number is found in January and February. The main features associated with potential frost cases are an amplified wave pattern with a ridge over the eastern Pacific and a trough over the Atlantic and southern Brazil. At the surface, a strong high pressure system crosses the Andes favoring northward flow of cold air over subtropical South America, which sometimes reaches as far north as the equator. Composites of cases over South America show that the ridge/trough pattern is part of a wavetrain which extends from the western South Pacific eastward to South America that can be identified as much as 4 days prior to the cold air outbreak over South America. Time-longitude sections of 500 hPa geopotencial anomalies indicate Rossby wave propagation and energy dispersion, that at times link cases of cold fronts over South America to later occurrences of cold air incursions over southern Africa. |
| Area | MET |
| Type | PRE |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDMD > Climatology of South... |
| 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/x6e6X3pFwXQZ3DUS8rS5/ycbdC |
| zipped data URL | http://urlib.net/zip/x6e6X3pFwXQZ3DUS8rS5/ycbdC |
| Language | en |
| Target File | 2003_cavalcanti2.pdf |
| User Group | administrator marciana |
| Reader Group | administrator marciana |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Read Permission | allow from all |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/43SKC35 |
| Citing Item List | sid.inpe.br/bibdigital/2021/01.01.17.20 1 |
| URL (untrusted data) | http://ams.confex.com/ams/pdfview.cgi?username=59753 |
| Host Collection | cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notes | |
| Empty Fields | archivingpolicy archivist callnumber contenttype copyright creatorhistory descriptionlevel dissemination doi edition editor electronicmailaddress isbn issn label lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization parameterlist parentrepositories previousedition previouslowerunit progress project publisheraddress resumeid rightsholder schedulinginformation secondarymark serieseditor session shorttitle sponsor subject tertiarymark versiontype volume |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |