| DOI: | 10.1016/j.gloplacha.2013.11.003
|
| 论文题名: | Inter-decadal modulation of ENSO teleconnections to the Indian Ocean in a coupled model: Special emphasis on decay phase of El Niño |
| 作者: | Chowdary J.S.; Parekh A.; Gnanaseelan C.; Sreenivas P.
|
| ISSN: | 0921-8535
|
| 出版年: | 2014
|
| 卷: | 112 | | 起始页码: | 33
|
| 结束页码: | 40
|
| 语种: | 英语
|
| 英文关键词: | Decadal teleconnections
; ENSO
; Sea surface temperature
; Tropical Indian Ocean
|
| Scopus关键词: | Atmospheric pressure
; Climatology
; Decay (organic)
; Integration
; Modulation
; Water waves
; Coupled general circulation models
; ENSO
; Equatorial Pacific
; Model integration
; Sea surface temperature (SST)
; Surface heat fluxes
; Teleconnections
; Tropical Indian ocean
; Oceanography
; decadal variation
; El Nino-Southern Oscillation
; oceanic general circulation model
; periodicity
; sea surface temperature
; teleconnection
; Indian Ocean
; Indian Ocean (Tropical)
|
| 英文摘要: | Inter-decadal modulation of El Niño-Southern Oscillation (ENSO) teleconnections to tropical Indian Ocean (TIO) is investigated in the coupled general circulation model Climate Forecast System (CFS) using a hundred year integration. The model is able to capture the periodicity of El Niño variability, which is similar to that of the observations. The maximum TIO/north Indian Ocean (NIO) SST warming (during spring following the decay phase of El Niño) associated with El Niño is well captured by the model. Detailed analysis reveals that the surface heat flux variations mainly contribute to the El Niño forced TIO SST variations both in observations and model. However, spring warming is nearly stationary throughout the model integration period, indicating poor inter-decadal El Niño teleconnections. The observations on the other hand displayed maximum SST warming with strong seasonality from epoch to epoch. The model El Niño decay delayed by more than two seasons, results in persistent TIO/NIO SST warming through the following December unlike in the observations. The ocean wave adjustments and persistent westerly wind anomalies over the equatorial Pacific are responsible for late decay of El Niño in the model. Consistent late decay of El Niño, throughout the model integration period (low variance), is mainly responsible for the poor inter-decadal ENSO teleconnections to TIO/NIO. This study deciphers that the model needs to produce El Niño decay phase variability correctly to obtain decadal-modulations in ENSO teleconnection. © 2013 Elsevier B.V. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888418822&doi=10.1016%2fj.gloplacha.2013.11.003&partnerID=40&md5=5e07d4de074b7a92cae81b6c29ba9de3
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/11441
|
| Appears in Collections: | 全球变化的国际研究计划
|
|
There are no files associated with this item.
|
|
作者单位: | Indian Institute of Tropical Meteorology, Pune 411008, India
|
| Recommended Citation: | |
Chowdary J.S.,Parekh A.,Gnanaseelan C.,et al. Inter-decadal modulation of ENSO teleconnections to the Indian Ocean in a coupled model: Special emphasis on decay phase of El Niño[J],2014-01-01,112.
|
|
|