Matches in SemOpenAlex for { <https://semopenalex.org/work/W2177718243> ?p ?o ?g. }
Showing items 1 to 96 of
96
with 100 items per page.
- W2177718243 endingPage "1608" @default.
- W2177718243 startingPage "1591" @default.
- W2177718243 abstract "The relationship between South American precipitation and cross-equatorial flow over the western Amazon is examined using the 15-yr (1979–93) European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis dataset. A meridional wind index, the V index, is constructed to represent the variability of the cross-equatorial flow, based on area-averaged (5°S–5°N, 65°–75°W) daily 925-hPa meridional winds. The V index displays large submonthly, seasonal, and interannual variabilities, and correlates well with precipitation over South America. Two circulation regimes are identified, that is, a southerly regime and a northerly regime. Linear regression shows that when the V index is southerly, precipitation is mainly located to the north of the equator. When the V index is northerly, precipitation shifts toward the Amazon basin and subtropical South America. The V index is predominately southerly in austral winter and northerly in summer. The onset (demise) of the Amazon rainy season is led by an increase in the frequency of the northerly (southerly) V index. The relation between the V index and upper-level circulation is consistent with the seasonal cycle of the South American monsoon circulation. Hence, the V index is a good indicator for precipitation change over tropical and subtropical South America. The singular value decomposition (SVD) analysis suggests that the V-index-related variation represents 92% of the total covariance between the low-level meridional wind and precipitation over South America. It also represents 37% of the seasonal variance of precipitation. On the seasonal timescale, the V index appears to correlate well with the meridional migration of the Hadley cell globally. On submonthly timescales, the change of V index is not correlated with the meridional wind over the adjacent oceans except in the South Atlantic convergence zone, suggesting a control by more localized and higher-frequency dynamic processes. The SVD analysis also suggests that during spring and fall precipitation changes over the equatorial eastern Amazon are associated with the seasonal variations of sea surface temperature in the Pacific and the Atlantic Oceans." @default.
- W2177718243 created "2016-06-24" @default.
- W2177718243 creator A5051199675 @default.
- W2177718243 creator A5090366405 @default.
- W2177718243 date "2002-07-01" @default.
- W2177718243 modified "2023-10-09" @default.
- W2177718243 title "Cross-Equatorial Flow and Seasonal Cycle of Precipitation over South America" @default.
- W2177718243 cites W1966810863 @default.
- W2177718243 cites W1967722715 @default.
- W2177718243 cites W1980160079 @default.
- W2177718243 cites W2004163137 @default.
- W2177718243 cites W2012798035 @default.
- W2177718243 cites W2019279153 @default.
- W2177718243 cites W2039781911 @default.
- W2177718243 cites W2056212394 @default.
- W2177718243 cites W2058203713 @default.
- W2177718243 cites W2091535840 @default.
- W2177718243 cites W2121529208 @default.
- W2177718243 cites W2131891445 @default.
- W2177718243 cites W2135534816 @default.
- W2177718243 cites W2156298772 @default.
- W2177718243 cites W2172777970 @default.
- W2177718243 cites W2173447637 @default.
- W2177718243 cites W2174111397 @default.
- W2177718243 cites W2174181425 @default.
- W2177718243 cites W2176233088 @default.
- W2177718243 cites W2176829913 @default.
- W2177718243 cites W2181138098 @default.
- W2177718243 doi "https://doi.org/10.1175/1520-0442(2002)015<1591:cefasc>2.0.co;2" @default.
- W2177718243 hasPublicationYear "2002" @default.
- W2177718243 type Work @default.
- W2177718243 sameAs 2177718243 @default.
- W2177718243 citedByCount "107" @default.
- W2177718243 countsByYear W21777182432012 @default.
- W2177718243 countsByYear W21777182432013 @default.
- W2177718243 countsByYear W21777182432014 @default.
- W2177718243 countsByYear W21777182432015 @default.
- W2177718243 countsByYear W21777182432016 @default.
- W2177718243 countsByYear W21777182432017 @default.
- W2177718243 countsByYear W21777182432018 @default.
- W2177718243 countsByYear W21777182432019 @default.
- W2177718243 countsByYear W21777182432020 @default.
- W2177718243 countsByYear W21777182432021 @default.
- W2177718243 countsByYear W21777182432022 @default.
- W2177718243 countsByYear W21777182432023 @default.
- W2177718243 crossrefType "journal-article" @default.
- W2177718243 hasAuthorship W2177718243A5051199675 @default.
- W2177718243 hasAuthorship W2177718243A5090366405 @default.
- W2177718243 hasBestOaLocation W21777182431 @default.
- W2177718243 hasConcept C107054158 @default.
- W2177718243 hasConcept C122523270 @default.
- W2177718243 hasConcept C123010829 @default.
- W2177718243 hasConcept C127313418 @default.
- W2177718243 hasConcept C12980444 @default.
- W2177718243 hasConcept C13280743 @default.
- W2177718243 hasConcept C136996986 @default.
- W2177718243 hasConcept C150284090 @default.
- W2177718243 hasConcept C153294291 @default.
- W2177718243 hasConcept C205649164 @default.
- W2177718243 hasConcept C39432304 @default.
- W2177718243 hasConcept C49204034 @default.
- W2177718243 hasConcept C91586092 @default.
- W2177718243 hasConceptScore W2177718243C107054158 @default.
- W2177718243 hasConceptScore W2177718243C122523270 @default.
- W2177718243 hasConceptScore W2177718243C123010829 @default.
- W2177718243 hasConceptScore W2177718243C127313418 @default.
- W2177718243 hasConceptScore W2177718243C12980444 @default.
- W2177718243 hasConceptScore W2177718243C13280743 @default.
- W2177718243 hasConceptScore W2177718243C136996986 @default.
- W2177718243 hasConceptScore W2177718243C150284090 @default.
- W2177718243 hasConceptScore W2177718243C153294291 @default.
- W2177718243 hasConceptScore W2177718243C205649164 @default.
- W2177718243 hasConceptScore W2177718243C39432304 @default.
- W2177718243 hasConceptScore W2177718243C49204034 @default.
- W2177718243 hasConceptScore W2177718243C91586092 @default.
- W2177718243 hasIssue "13" @default.
- W2177718243 hasLocation W21777182431 @default.
- W2177718243 hasOpenAccess W2177718243 @default.
- W2177718243 hasPrimaryLocation W21777182431 @default.
- W2177718243 hasRelatedWork W2039160577 @default.
- W2177718243 hasRelatedWork W2353086803 @default.
- W2177718243 hasRelatedWork W2754048276 @default.
- W2177718243 hasRelatedWork W3142947635 @default.
- W2177718243 hasRelatedWork W4241441579 @default.
- W2177718243 hasRelatedWork W4295926386 @default.
- W2177718243 hasRelatedWork W4296149789 @default.
- W2177718243 hasRelatedWork W4307300625 @default.
- W2177718243 hasRelatedWork W4308435836 @default.
- W2177718243 hasRelatedWork W4308471337 @default.
- W2177718243 hasVolume "15" @default.
- W2177718243 isParatext "false" @default.
- W2177718243 isRetracted "false" @default.
- W2177718243 magId "2177718243" @default.
- W2177718243 workType "article" @default.