Show simple item record

dc.contributor.authorBeniche, M.
dc.contributor.authorVialard, J.
dc.contributor.authorLengaigne, M.
dc.contributor.authorVoldoire, A.
dc.contributor.authorGangiredla, S.
dc.contributor.authorHall, N.M.J.
dc.date.accessioned2024-03-31
dc.date.accessioned2024-09-13T05:46:49Z
dc.date.available2024-01-30
dc.date.available2024-09-13T05:46:49Z
dc.date.issued2024
dc.identifier.citationScientific Reports, vol.14(1); 2024; Article no: 2457
dc.identifier.issn2045-2322
dc.identifier.otherhttps://www.nature.com/articles/s41598-024-52580-9
dc.identifier.urihttps://doi.org/10.1038/s41598-024-52580-9
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9231
dc.descriptionIF(JCR2023) = 4.6
dc.description.abstractEl Nino-Southern Oscillation (ENSO) teleconnections are an important predictability source for extratropical seasonal climate forecasts. Previous studies suggest that the ENSO teleconnection pattern depends on the ENSO phase (El Ni�o vs. La Ni�a) and/or Sea Surface Temperature (SST) pattern (central Pacific vs. eastern Pacific El Ni�o events). Observations and ensemble simulations with the CNRM-CM6.1 atmospheric general circulation model indicate that only extreme El Ni�o events (e.g. 1982-1983, 1997-1998, 2015-2016) display a statistically significant eastward shift relative to the well-known Pacific-North American teleconnection pattern that occurs during both central and eastern Pacific moderate El Ni�o or during La Ni�a. This specific teleconnection pattern emerges when equatorial SST anomalies are both eastward-shifted and sufficiently large to exceed the deep atmospheric convection threshold over most of the eastern Pacific, resulting in a basin-wide reorganization of tropospheric heat sources. It yields> 0.5 std wet conditions over Western United States (74% likelihood) as well as> 0.5 std warm anomalies over Canada and the Northern United States (71% likelihood), with more consistency across events and ensemble members than for any other El Ni�o or La Ni�a type. These findings hold important implications for the seasonal forecasting of El Ni�o�s impacts on the North American climate.
dc.languageen
dc.publisherNature Publishing Group
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titleA distinct and reproducible teleconnection pattern over North America during extreme El Nino events
dc.typeJournal Article
dc.affiliation.authorLEGOS, CNRS/CNES/IRD/Universit� de Toulouse, Toulouse, France


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record