| 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/2005/10.31.22.07 | |||
| Last Update | 2006:04.15.18.26.00 (UTC) administrator | |||
| Metadata Repository | cptec.inpe.br/adm_conf/2005/10.31.22.07.44 | |||
| Metadata Last Update | 2018:06.05.03.43.02 (UTC) administrator | |||
| Citation Key | GrimmZill:2006:LaInRo | |||
| Title | Interannual variability of summer rainfall in South America: large-scale influences and the role of antecedent conditions in spring  | |||
| Format | CD-ROM, On-line. | |||
| Year | 2006 | |||
| Access Date | 2024, Dec. 26 | |||
| Secondary Type | PRE CI | |||
| Number of Files | 1 | |||
| Size | 633 KiB | |||
| 2. Context | ||||
| Author | 1 Grimm, Alice Marlene 2 Zilli, Marcia Terezinha | |||
| Affiliation | 1 Universidade Federal do Paraná, Departamento de Física 2 Caixa Postal 19044. 81531-990 Curitiba, PR, Brazil (Grimm 3 Zilli) | |||
| Author e-Mail Address | 1 grimm@fisica.ufpr.br 2 marciatz@fisica.ufpr.br | |||
| Editor | Vera, Carolina Nobre, Carlos | |||
| e-Mail Address | grimm@fisica.ufpr.br | |||
| 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 | 1097-1103 | |||
| Book Title | Proceedings | |||
| Tertiary Type | Oral | |||
| Organization | American Meteorological Society (AMS) | |||
| History (UTC) | 2005-10-31 22:07:45 :: grimm@fisica.ufpr.br -> adm_conf :: 2005-12-15 15:35:20 :: adm_conf -> grimm@fisica.ufpr.br :: 2006-03-30 00:14:21 :: grimm@fisica.ufpr.br -> administrator :: 2006-04-18 21:17:36 :: administrator -> lise@dpi.inpe.br :: 2010-12-28 12:36:47 :: lise@dpi.inpe.br -> administrator :: 2010-12-29 15:58:48 :: administrator -> lise@dpi.inpe.br :: 2006 2010-12-29 16:06:12 :: lise@dpi.inpe.br -> administrator :: 2006 2010-12-29 18:54:32 :: administrator -> banon :: 2006 2011-01-02 17:15:12 :: banon -> administrator :: 2006 2018-06-05 03:43:02 :: administrator -> :: 2006 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Keywords | South American monsoon system precipitation modes of variability sea surface temperature land-suface processes | |||
| Abstract | The importance of the summer monsoon season to the annual total precipitation over most of South America is well known. The variability of monsoon precipitation is of utmost importance for agriculture, reservoir management, and natural disaster preparedness. Two previous studies with reconstructed rainfall from satellite estimates and gauge-based monthly totals, have stressed the influence of ENSO on summer precipitation. It is represented by the first mode of variability in these studies. The second mode represents the interannual and interdecadal variability in Northeast Brazil, whereas the third mode is completely different in both studies. The first two modes of summer precipitation in those studies do not have strongest components in the monsoon core region in South America. Are the regions with monsoon-like regime not prone to undergo strong interannual variations or, in other words, are the processes leading to monsoon rainfall in South America not prone to undergo interannual variations? If yes, would these processes be directly affected by remote or large-scale influences or indirectly, through regional interactions that are stronger in the summer season? In this study we intend to cast some light on these questions. We pursue the following objectives: i) to determine the principal modes of interannual variability of summer monsoon rainfall on the basis of relatively long series of rain gauge data; ii) to establish connections between the conditions in the beginning of the monsoon season and its peak; iii) to verify connections with global SST. Precipitation data from more than 9000 stations over most of South America are averaged in 2.5 X 2.5 degree boxes. These data are mainly concentrated in the Southern Hemisphere (SH) part of South America, where summer rainfall mostly dominates the annual cycle. Mean precipitation series for spring (SON) and summer (DJF) are formed for each of those boxes in the period 1961-2000, and submitted to Principal Component Analysis. Rotated and non-rotated modes of variability are determined and their relationship with global sea surface temperature SST) is assessed. Furthermore, we analyze the relationship between spring and summer precipitation, in order to detect influence of antecedent soil moisture conditions in spring on the peak summer monsoon rainfall. While some modes of summer rainfall variability bear similarity to modes determined in previous studies, there are also significant differences. There is an inverse relationship between a pair of similar modes in spring and summer, which suggests that antecedent conditions in spring may influence precipitation in summer. This relationship is even stronger when shorter periods within these seasons are analyzed, such as November and January. The analysis of the relationship between the precipitation modes and global SST indicates that the remote large-scale influences on interannual precipitation variability are much stronger in spring than in summer, suggesting a possible role of regional forcing in summer associated with surface-atmosphere interaction.. | |||
| Area | MET | |||
| Type | Monsoon systems and continental rainfall | |||
| doc Directory Content | access | |||
| source Directory Content |
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| agreement Directory Content | there are no files | |||
| 4. Conditions of access and use | ||||
| data URL | http://urlib.net/ibi/cptec.inpe.br/adm_conf/2005/10.31.22.07 | |||
| zipped data URL | http://urlib.net/zip/cptec.inpe.br/adm_conf/2005/10.31.22.07 | |||
| Language | en | |||
| Target File | 1097-1104.pdf | |||
| User Group | grimm@fisica.ufpr.br 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 | |||