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Multidecadal Drought Cycles in the Great Basin Recorded by the Great Salt Lake: Modulation from a Transition-Phase Teleconnection
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wang, Shih-Yu Simon Gillies, Robert R. Reichler, Thomas Josef |
| Copyright Year | 2012 |
| Abstract | This study investigates the meteorological conditions associated with multidecadal drought cycles as revealed by lake level fluctuation of the Great Salt Lake (GSL). The analysis combined instrumental, proxy, and simulation datasets, including the Twentieth Century Reanalysis version 2, the North American Drought Atlas, and a 2000-yr control simulation of the GFDL Coupled Model, version 2.1 (CM2.1). Statistical evidence from the spectral coherence analysis points to a phase shift amounting to 6‐9 yr between the wet‐dry cyclesin theGreatBasinandthewarm–coolphasesoftheinterdecadalPacificoscillation(IPO).Diagnosesof the sea surface temperature and atmospheric circulation anomaliesattribute such a phase shift to a distinctive teleconnectionwavetrainthatdevelopsduringthetransitionpoints betweentheIPO’swarmandcoolphases. This teleconnection wave train forms recurrent circulation anomalies centered over the southeastern Gulf of Alaska; this directs moisture flux across the Great Basin and subsequently drives wet‐dry conditions over the Great Basin and the GSL watershed. The IPO life cycle therefore modulates local droughts‐pluvials in a quarter-phase manner. |
| Starting Page | 1711 |
| Ending Page | 1721 |
| Page Count | 11 |
| File Format | PDF HTM / HTML |
| DOI | 10.1175/2011JCLI4225.1 |
| Volume Number | 25 |
| Alternate Webpage(s) | https://digitalcommons.usu.edu/cgi/viewcontent.cgi?amp%3Bcontext=psc_facpub&article=1003 |
| Alternate Webpage(s) | https://doi.org/10.1175/2011JCLI4225.1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
