| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | x6e6X3pFwXQZ3DUS8rS5/C7mKq |
| Repository | cptec.inpe.br/walmeida/2004/05.10.15.14 (restricted access) |
| Last Update | 2013:04.05.14.52.47 (UTC) administrator |
| Metadata Repository | cptec.inpe.br/walmeida/2004/05.10.15.14.43 |
| Metadata Last Update | 2021:02.10.18.59.42 (UTC) administrator |
| Secondary Key | INPE-11158-PRE/6614 |
| ISSN | 0165-0009 |
| Citation Key | Marengo:1995:VaChSo |
| Title | Variations and change in South-American streamflow  |
| Year | 1995 |
| Month | Sep. |
| Access Date | 2024, May 02 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 1887 KiB |
| 2. Context | |
| Author | Marengo, Jose Antonio |
| Group | DMD-INPE-MCT-BR |
| Affiliation | CPTEC-INPE-Cachoeira Paulista-12630-000-SP-Brasil |
| e-Mail Address | fabia@cptec.inpe.br |
| Journal | Climatic Change |
| Volume | 31 |
| Number | 1 |
| Pages | 99-117 |
| History (UTC) | 2008-06-10 19:46:02 :: administrator -> estagiario :: 2010-05-11 16:53:08 :: estagiario -> administrator :: 2013-04-05 14:52:27 :: administrator -> marciana :: 1995 2013-04-05 14:52:48 :: marciana -> administrator :: 1995 2021-02-10 18:59:42 :: administrator -> marciana :: 1995 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Version Type | publisher |
| Keywords | extreme climatic events Amazonian deforestation tropical deforestation rainfall anomalies regional climate surface climate river discharge united-states oscilation precipitation |
| Abstract | Long-term hydroclimatological records in tropical South America have been analyzed in order to determine whether or not there have been significant changes in the hydrological cycle. Streamflow data from several rivers in Peru, Brazil, Argentina and Venezuela, as well as rainfall in Northeast Brazil have been used here for the study of long-term and interannual variations on hydrological conditions in different regions of South America. The Mann-Kendall statistical test is applied to the historical streamflow annual series in order to detect trends or changes in the mean. The Student t-test is also applied to study the relationship between interannual variability and the magnitude of change and length of data required to identify a statistically significant trend. It follows from the statistical analysis of the currently available historical river data set that there is no clear evidence of trend or change in the mean streamflow of South American rivers resulting from a climate change, even though significant trends towards drier conditions have been found for rivers in the Northwest coast of Peru and in eastern Brazil. Interannual variations characterized the hydrology of tropical South America, in association with the extreme phases of the Southern Oscillation. The change required to identify a statistically significant variation in the mean is directly proportional to the interannual variability. The effects of Amazon deforestation are not noticeable on the 1903-92 interannual variability of the Rio Negro series at Manaus nor in rainfall time series. |
| Area | MET |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDMD > Variations and change... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | BF01092983.pdf |
| User Group | administrator marciana |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Archiving Policy | denypublisher denyfinaldraft12 |
| Read Permission | deny from all and allow from 150.163 |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/43SKC35 |
| Dissemination | WEBSCI; PORTALCAPES; MGA; COMPENDEX. |
| Host Collection | cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel doi electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |