| 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/adm_conf/2005/10.28.15.26 | |||
| Last Update | 2006:04.16.18.05.02 (UTC) administrator | |||
| Metadata Repository | cptec.inpe.br/adm_conf/2005/10.28.15.26.57 | |||
| Metadata Last Update | 2018:06.05.03.42.49 (UTC) administrator | |||
| Citation Key | CarrascoBrom:2006:InBeKa | |||
| Title | Interannual behaviour of the katabatic wind events across the Ross Ice Shelf  | |||
| Format | CD-ROM, On-line. | |||
| Year | 2006 | |||
| Access Date | 2024, Dec. 27 | |||
| Secondary Type | PRE CI | |||
| Number of Files | 1 | |||
| Size | 626 KiB | |||
| 2. Context | ||||
| Author | 1 Carrasco, Jorge 2 Bromwich, David H. | |||
| Affiliation | 1 Dirección Meteorológica de Chile, Casilla 717 Santiago - Chile (Carrasco) 2 Centro de Estudios Científicos, Av. Prat 514, Valdivia - Chile (Carrasco) 3 Polar Meteorology Group, Byrd Polar Research Center, and Atmospheric Science Program, Department of Geography, The Ohio State University, Columbus, Ohio | |||
| Author e-Mail Address | 1 jorge.carrasco@meteochile.cl 2 bromwich@polarmet1.mps.ohio-state.edu | |||
| Editor | Vera, Carolina Nobre, Carlos | |||
| e-Mail Address | jorge.carrasco@meteochile.cl | |||
| Conference Name | International Conference on Southern Hemisphere Meteorology and Oceanography, 8 (ICSHMO). | |||
| Conference Location | Foz do Iguaçu | |||
| Date | 24-28 Apr. 2006 | |||
| Publisher | American Meteorological Society (AMS) | |||
| Publisher City | 45 Beacon Hill Road, Boston, MA, USA | |||
| Pages | 183-188 | |||
| Book Title | Proceedings | |||
| Tertiary Type | Oral | |||
| Organization | American Meteorological Society (AMS) | |||
| History (UTC) | 2005-10-28 15:26:57 :: jorge.carrasco@meteochile.cl -> adm_conf :: 2005-12-15 16:31:21 :: adm_conf -> jorge.carrasco@meteochile.cl :: 2006-03-08 17:57:01 :: jorge.carrasco@meteochile.cl -> administrator :: 2006-04-18 21:01:02 :: administrator -> lise@dpi.inpe.br :: 2010-12-28 12:36:28 :: lise@dpi.inpe.br -> administrator :: 2010-12-29 15:56:25 :: administrator -> lise@dpi.inpe.br :: 2006 2010-12-29 16:05:49 :: lise@dpi.inpe.br -> administrator :: 2006 2010-12-29 18:52:14 :: administrator -> banon :: 2006 2011-01-02 17:14:49 :: banon -> administrator :: 2006 2018-06-05 03:42:49 :: administrator -> :: 2006 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Keywords | Katabatic winds Ross Ice Shelf Antarctic Oscillation | |||
| Abstract | Cold katabatic winds intermittently propagate northwestward from the southernmost region of the Ross Ice Shelf (RIS) toward the Ross Sea, crossing a distance of about 1000 km. Previous pilot studies for April-August 1988, indicate that when these katabatic surge events (KSE) take place the automatic weather stations (AWS) deployed in the southern part of the RIS, in particular the AWS Latteau, reveal an increase in the near surface air temperature, an increase in the pressure gradient normal to the Transantarctic Mountains, an increase wind speed and a more southeasterly wind direction. These findings were applied (meanly the air temperature) to the 1986 - 2004 period for studying the interannual behavior of the katabatic wind events that take place during the winter months April to August. A KSE was defined to occur when the daily average surface-air temperatures recorded by the AWS located in the southern RIS sector were continuously warmer than the respective seasonal mean for at least two days. The winter-annually average of total KSE days is 52 days with a minimum of 41 (in 1992) and a maximum of 62 (in 1994) warmer days associated with KSE. Twelve episodes is the winter annual average of KSE, with a minimum of 9 (in 1999) and maximum 16 events (in 1996). An overall decrease in the number of KSE (and warmer days) is reveal by the linear trend applied to the 1986-2004 period. While an increase of non-KSE (colder days) is revealed by the linear trend. The large-scale compose analysis for the peak of KSE shows an intensified low-pressure center located just to the northwest of Marie Byrd Land along with a mid tropospheric (500 hPa) cyclone center in Ross Sea. A mid-tropospheric cold trough off the RIS reveals that the warm KSE near the surface is associated with cold air mass moving northward from the interior of the Antarctic continent. A preliminary analysis reveals a correlation of 0.63 between the KSE and the ice concentration just offshore of the RIS. Anomalies field for peak-KSE shows a wave number 3 while the anomalies for the peak of non-KSE showed similar pattern of the Antarctic Oscillation (AO), i.e., a negative anomaly region over the continent and positive region centered around 40 -50 ºS latitude belt. Furthermore, a correlation of 0.58 is found between the KSE and the AO index, averaged over the April-August period of the previous year.. | |||
| Area | MET | |||
| Type | Climate and Cryosphere of the Antarctic region | |||
| doc Directory Content | access | |||
| source Directory Content |
| |||
| agreement Directory Content | there are no files | |||
| 4. Conditions of access and use | ||||
| data URL | http://urlib.net/ibi/cptec.inpe.br/adm_conf/2005/10.28.15.26 | |||
| zipped data URL | http://urlib.net/zip/cptec.inpe.br/adm_conf/2005/10.28.15.26 | |||
| Language | en | |||
| Target File | 183-188.pdf | |||
| User Group | jorge.carrasco@meteochile.cl administrator | |||
| Visibility | shown | |||
| 5. Allied materials | ||||
| Host Collection | cptec.inpe.br/nobre/2005/06.02.21.14 cptec.inpe.br/walmeida/2003/04.25.17.12 | |||
| 6. Notes | ||||
| Mark | 1 | |||
| Empty Fields | archivingpolicy archivist callnumber contenttype copyholder copyright creatorhistory descriptionlevel dissemination documentstage doi edition group identifier isbn issn label lineage mirrorrepository nextedition nexthigherunit notes numberofvolumes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark serieseditor session shorttitle sponsor subject tertiarymark url versiontype volume | |||