eCite Digital Repository

Evaluation of rainfall drivers and teleconnections in an ACCESS AMIP run

Citation

Risbey, JS and McIntosh, PC and Pook, MJ and Rashid, HA and Hirst, AC, Evaluation of rainfall drivers and teleconnections in an ACCESS AMIP run, Australian Meteorological and Oceanographic Journal, 61, (2) pp. 91-105. ISSN 1836-716X (2011) [Refereed Article]

Copyright Statement

© 2011 Commonwealth of Australia

Official URL: http://www.bom.gov.au/amm/docs/2011/risbey.pdf

DOI: doi:10.22499/2.6102.001

Abstract

This study examines teleconnections from the El Niño Southern Oscillation (ENSO), the Indian Ocean Dipole (IOD), the Southern Annular Mode (SAM), and atmospheric blocking to rainfall over the Australian continent. The analysis is carried out for observations and an atmospheric GCM driven by prescribed time-varying sea surface temperatures. The model rainfall teleconnection to the blocking index is well captured in each season, whereas the IOD rainfall teleconnection is only weakly evident in the model. The ENSO rainfall response in eastern Australia is evident in spring in the model, but not winter. The small scale topographically-induced rainfall teleconnections from SAM are generally not captured in the model. In observations, ENSO and IOD are well correlated in spring, as are SAM and blocking. Only the first of these relationships between drivers is evident in the model. These mixed results indicate the need to improve representation of teleconnection processes.

Item Details

Item Type:Refereed Article
Keywords:atmospheric general circulation model, El Nino-Southern Oscillation, observational method, oceanic general circulation model, precipitation assessment, rainfall, sea surface temperature, teleconnection, topographic effect
Research Division:Earth Sciences
Research Group:Atmospheric Sciences
Research Field:Meteorology
Objective Division:Environment
Objective Group:Atmosphere and Weather
Objective Field:Weather
Author:Risbey, JS (Dr James Risbey)
Author:McIntosh, PC (Dr Peter McIntosh)
Author:Pook, MJ (Dr Michael Pook)
ID Code:119006
Year Published:2011
Web of Science® Times Cited:7
Deposited By:Ecology and Biodiversity
Deposited On:2017-07-25
Last Modified:2017-10-16
Downloads:0

Repository Staff Only: item control page