 |
| Titel |
A method to foresee the 22nd century-state of the Low-Level Caribbean Jet and the SST difference between the Eastern Pacific and Western Atlantic Tropical Oceans from 21st century RegCM4 simulations |
| VerfasserIn |
Edgar Pavia, Federico Graef, Ramon Fuentes-Franco, Ismael Villanueva |
| Konferenz |
EGU General Assembly 2015
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250107769
|
| Publikation (Nr.) |
 EGU/EGU2015-7483.pdf |
|
|
|
|
|
| Zusammenfassung |
| A regional climate model (RegCM4) has recently verified the strengthening of the Low-Level
Caribbean Jet (LLCJ) as a response to the increasing sea surface temperature (SST)
difference (θ) between the Eastern Tropical Pacific (ETP) and the Western Tropical Atlantic
(WTA) towards the end of the 21st century. This LLCJ strengthening, in turn, has been
identified as the main cause for a future significant decrease in summer precipitation over the
South of Mexico and Central America (SMCA) region, as the strong LLCJ transports
humidity to the Pacific Ocean away from the continent. Since this dramatic scenario
is a robust signal in different studies, here we propose a method to examine the
relationship between θ and the zonal wind (U) associated to the LLCJ. The scheme
consists of a pair of coupled equations which yield periodic solutions (found by
means of a numerical-analytical hybrid method) which suggest that the system has a
tendency to return to its present state during the 22nd century. Finally our results are
compared to the available 22nd century outputs from different numerical models. |
|
|
|
|
|
|