Asymmetry in ENSO teleconnection with regional rainfall, its multidecadal variability, and impact

Article

Cai, Wenju, van Rensch, Peter, Cowan, Tim and Sullivan, Arnold. 2010. "Asymmetry in ENSO teleconnection with regional rainfall, its multidecadal variability, and impact." Journal of Climate. 23 (18), pp. 4944-4955. https://doi.org/10.1175/2010JCLI3501.1
Article Title

Asymmetry in ENSO teleconnection with regional rainfall, its multidecadal variability, and impact

ERA Journal ID1978
Article CategoryArticle
AuthorsCai, Wenju, van Rensch, Peter, Cowan, Tim and Sullivan, Arnold
Journal TitleJournal of Climate
Journal Citation23 (18), pp. 4944-4955
Number of Pages12
Year2010
PublisherAmerican Meteorological Society
Place of PublicationUnited States
ISSN0894-8755
1520-0442
Digital Object Identifier (DOI)https://doi.org/10.1175/2010JCLI3501.1
Web Address (URL)https://journals.ametsoc.org/view/journals/clim/23/18/2010jcli3501.1.xml
Abstract

An asymmetry, and its multidecadal variability, in a rainfall teleconnection with the El Niño–Southern Oscillation (ENSO) are described. Further, the breakdown of this relationship since 1980 is offered as a cause for a rainfall reduction in an ENSO-affected region, southeast Queensland (SEQ). There, austral summer rainfall has been declining since around the 1980s, but the associated process is not understood.
It is demonstrated that the rainfall reduction is not simulated by the majority of current climate models forced with anthropogenic forcing factors. Examination shows that ENSO is a rainfall-generating mechanism for the region because of an asymmetry in its impact: the La Niña–rainfall relationship is statistically significant, as SEQ summer rainfall increases with La Niña amplitude; by contrast, the El Niño–induced rainfall reductions do not have a statistically significant relationship with El Niño amplitude. Since 1980, this asymmetry no longer operates, and La Niña events no longer induce a rainfall increase, leading to the observed SEQ rainfall reduction. A similar asymmetric rainfall teleconnection with ENSO Modoki exists and shares the same temporal evolutions.
This breakdown is caused by an eastward shift in the Walker circulation and the convection center near Australia’s east coast, in association with a post-1980 positive phase of the interdecadal Pacific oscillation (IPO). Such a breakdown occurred before 1950, indicating that multidecadal variability alone could potentially be responsible for the recent SEQ rainfall decline. An aggregation of outputs from climate models to distill the impact of climate change suggests that the asymmetry and the breakdown may not be generated by climate change, although most models do not perform well in simulating the ENSO–rainfall teleconnection over the SEQ region.

KeywordsENSO; Teleconnections; Australia; Rainfall; Multidecadal variability
ANZSRC Field of Research 2020370202. Climatology
370105. Atmospheric dynamics
370201. Climate change processes
Public NotesFile reproduced in accordance with the copyright policy of the publisher/author.
Byline AffiliationsCommonwealth Scientific and Industrial Research Organisation (CSIRO), Australia
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Schurer, Andrew P., Hegerl, Gabriele C., Luterbacher, Jurg, Bronnimann, Stefan, Cowan, Tim, Tett, Simon F. B., Zanchettin, Davide and Timmreck, Claudia. 2019. "Disentangling the causes of the 1816 European year without a summer." Environmental Research Letters. 14 (094019), pp. 1-10. https://doi.org/10.1088/1748-9326/ab3a10
Circulation analogues and uncertainty in the time‑evolution of extreme event probabilities: evidence from the 1947 Central European heatwave
Harrington, Luke J., Otto, Friederike E. L., Cowan, Tim and Hegerl, Gabriele C.. 2019. "Circulation analogues and uncertainty in the time‑evolution of extreme event probabilities: evidence from the 1947 Central European heatwave." Climate Dynamics. 53 (3-4), pp. 2229-2247. https://doi.org/10.1007/s00382-019-04820-2
Influence of internal climate variability on Indian Ocean Dipole properties
Ng, Benjamin, Cai, Wenju, Cowan, Tim and Bi, Daohua. 2018. "Influence of internal climate variability on Indian Ocean Dipole properties." Scientific Reports. 8 (1), pp. 1-8. https://doi.org/10.1038/s41598-018-31842-3
Evaluation of the HadGEM3-A simulations in view of detection and attribution of human influence on extreme events in Europe
Vautard, Robert, Christidis, Nikolaos, Ciavarella, Andrew, Alvarez-Castro, Carmen, Bellprat, Omar, Christiansen, Bo, Colfescu, Ioana, Cowan, Tim, Doblas-Reyes, Francisco, Eden, Jonathan, Hauser, Mathias, Hegerl, Gabriele, Hempelmann, Nils, Klehmet, Katharina, Lott, Fraser, Nangini, Cathy, Orth, Rene, Radanovics, Sabine, Seneviratne, Sonia I., ..., Yiou, Pascal. 2019. "Evaluation of the HadGEM3-A simulations in view of detection and attribution of human influence on extreme events in Europe." Climate Dynamics. 52 (1-2), pp. 1187-1210. https://doi.org/10.1007/s00382-018-4183-6
Was the cold European winter of 2009/10 modified by anthropogenic climate change? An attribution study
Christiansen, Bo, Alvarez-Castro, Carmen, Christidis, Nikolaos, Ciavarella, Andrew, Colfescu, Ioana, Cowan, Timothy, Eden, Jonathan, Hauser, Mathias, Hempelmann, Nils, Klehmet, Katharina, Lott, Fraser, Nangini, Cathy, van Oldenborgh, Geert Jan, Orth, Rene, Stott, Peter, Tett, Simon, Vautard, Robert, Wilcox, Laura and Yiou, Pascal. 2018. "Was the cold European winter of 2009/10 modified by anthropogenic climate change? An attribution study." Journal of Climate. 31 (9), pp. 3387-3410. https://doi.org/10.1175/JCLI-D-17-0589.1
The early 20th century warming: Anomalies, causes, and consequences
Hegerl, Gabriele C., Bronnimann, Stefan, Schurer, Andrew and Cowan, Tim. 2018. "The early 20th century warming: Anomalies, causes, and consequences." WIREs Climate Change. 9 (4). https://doi.org/10.1002/wcc.522
Factors contributing to record-breaking heat waves over the great plains during the 1930s Dust Bowl
Cowan, Tim, Hegerl, Gabriele C., Colfescu, Ioana, Bollasina, Massimo, Purich, Ariaan and Boschat, Ghyslaine. 2017. "Factors contributing to record-breaking heat waves over the great plains during the 1930s Dust Bowl." Journal of Climate. 30 (7), pp. 2437-2461. https://doi.org/10.1175/JCLI-D-16-0436.1
Evidence for link between modelled trends in Antarctic sea ice and underestimated westerly wind changes
Purich, Ariaan, Cai, Wenju, England, Matthew H. and Cowan, Tim. 2016. "Evidence for link between modelled trends in Antarctic sea ice and underestimated westerly wind changes." Nature Communications. 7. https://doi.org/10.1038/ncomms10409
Natural hazards in Australia: heatwaves
Perkins-Kirkpatrick, S. E., White, C. J., Alexander, L. V., Argueso, D., Boschat, G., Cowan, T., Evans, J. P., Ekstrom, M., Oliver, E. C. J., Phatak, A. and Purich, A.. 2016. "Natural hazards in Australia: heatwaves." Climatic Change: an interdisciplinary, international journal devoted to the description, causes and implications of climatic change. 139 (1), pp. 101-114. https://doi.org/10.1007/s10584-016-1650-0
Long-term streamflow trends in the middle reaches of the Yellow River Basin: Detecting drivers of change
Gao, Zhaoliang, Zhang, Lu, Zhang, Xiaoping, Cheng, Lei, Potter, Nick, Cowan, Tim and Cai, Wenju. 2016. "Long-term streamflow trends in the middle reaches of the Yellow River Basin: Detecting drivers of change." Hydrological Processes. 30 (9), pp. 1315-1329. https://doi.org/10.1002/hyp.10704
On the use of composite analyses to form physical hypotheses: An example from heat wave - SST associations
Boschat, Ghyslaine, Simmonds, Ian, Purich, Purich, Cowan, Tim and Pezza, Alexandre Bernardes. 2016. "On the use of composite analyses to form physical hypotheses: An example from heat wave - SST associations." Scientific Reports. 6. https://doi.org/10.1038/srep29599
Groundwater storage trends in the Loess Plateau of China estimated from streamflow records
Gao, Zhaoliang, Zhang, Lu, Cheng, Lei, Zhang, Xiaoping, Cowan, Tim, Cai, Wenju and Brutsaert, Wilfried. 2015. "Groundwater storage trends in the Loess Plateau of China estimated from streamflow records." Journal of Hydrology. 530, pp. 281-290. https://doi.org/10.1016/j.jhydrol.2015.09.063
The Response of the Indian Ocean Dipole Asymmetry to Anthropogenic Aerosols and Greenhouse Gases
Cowan, Tim, Cai, Wenju, Ng, Benjamin and England, Matthew. 2015. "The Response of the Indian Ocean Dipole Asymmetry to Anthropogenic Aerosols and Greenhouse Gases ." Journal of Climate. 28 (7), pp. 2564-2583. https://doi.org/10.1175/JCLI-D-14-00661.1
Large scale and sub-regional connections in the lead up to summer heat wave and extreme rainfall events in eastern Australia
Boschat, Ghyslaine, Pezza, Alexandre, Simmonds, Ian, Perkins, Sarah, Cowan, Tim and Purich, Ariaan. 2015. "Large scale and sub-regional connections in the lead up to summer heat wave and extreme rainfall events in eastern Australia." Climate Dynamics. 44 (7-8), pp. 1823-1840. https://doi.org/10.1007/s00382-014-2214-5
Future projections of Australian heat wave number and intensity based on CMIP5 models
Cowan, Tim, Purich, Ariaan, Boschat, Ghyslaine and Perkins, Sarah. 2014. "Future projections of Australian heat wave number and intensity based on CMIP5 models." Bulletin of the Australian Meteorological and Oceanographic Society. 27 (6), pp. 134-139.
Atmospheric and oceanic conditions associated with Southern Australian heat waves: A CMIP5 analysis
Purich, Ariaan, Cowan, Tim, Cai, Wenju, van Rensch, Peter, Uotila, Petteri, Pezza, Alexandre, Boschat, Ghyslaine and Perkins, Sarah. 2014. "Atmospheric and oceanic conditions associated with Southern Australian heat waves: A CMIP5 analysis." Journal of Climate. 27 (20), pp. 7807-7829. https://doi.org/10.1175/JCLI-D-14-00098.1
More frequent, longer, and hotter heat waves for Australia in the Twenty-First Century
Cowan, Tim, Purich, Ariaan, Perkins, Sarah, Pezza, Alexandre, Boschat, Ghyslaine and Sadler, Katherine. 2014. "More frequent, longer, and hotter heat waves for Australia in the Twenty-First Century." Journal of Climate. 27 (15), pp. 5851-5871. https://doi.org/10.1175/JCLI-D-14-00092.1
What is driving the fast warming rate of the Southern Hemisphere midlatitude ocean?
Cowan, Tim and Cai, Wenju. 2014. "What is driving the fast warming rate of the Southern Hemisphere midlatitude ocean?" OCEANS'10 IEEE Sydney. Sydney, Australia 24 - 27 May 2010 Australia. https://doi.org/10.1109/OCEANSSYD.2010.5603876
Did climate change-induced rainfall trends contribute to the Australian Millennium drought?
Cai, Wenju, Purich, Ariaan, Cowan, Tim, van Rensch, Peter and Weller, Weller. 2014. "Did climate change-induced rainfall trends contribute to the Australian Millennium drought?" Journal of Climate. 27 (9), pp. 3145-3168. https://doi.org/10.1175/JCLI-D-13-00322.1
Autumn precipitation trends over Southern Hemisphere midlatitudes as simulated by CMIP5 models
Purich, Ariaan, Cowan, Tim, Min, Seung-Ki and Cai, Wenju. 2013. "Autumn precipitation trends over Southern Hemisphere midlatitudes as simulated by CMIP5 models." Journal of Climate. 26 (21), pp. 8341-8356. https://doi.org/10.1175/JCLI-D-13-00007.1
Annual sea surface temperature lag as an indicator of regional climate variability
Li, Chung-Leong, Bye, John A.T., Gallagher, Stephen J. and Cowan, Tim. 2013. "Annual sea surface temperature lag as an indicator of regional climate variability." International Journal of Climatology. 33 (10), pp. 2309-2317. https://doi.org/10.1002/joc.3587
The association of tropical and extratropical climate modes to atmospheric blocking across southeastern Australia
Cowan, Tim, van Rensch, Peter, Purich, Ariaan and Cai, Wenju. 2013. "The association of tropical and extratropical climate modes to atmospheric blocking across southeastern Australia." Journal of Climate. 26 (19), pp. 7555-7569. https://doi.org/10.1175/JCLI-D-12-00781.1
Forcing of anthropogenic aerosols on temperature trends of the sub-thermocline southern Indian Ocean
Cowan, Tim, Cai, Wenju, Purich, Ariaan, Rotstayn, Leon and England, Matthew H.. 2013. "Forcing of anthropogenic aerosols on temperature trends of the sub-thermocline southern Indian Ocean." Scientific Reports. 3. https://doi.org/10.1038/srep02245
The response of the large-scale ocean circulation to 20th century Asian and non-Asian aerosols
Cowan, T. and Cai, W.. 2013. "The response of the large-scale ocean circulation to 20th century Asian and non-Asian aerosols." Geophysical Research Letters. 40 (11), pp. 2761-2767. https://doi.org/10.1002/grl.50587
Projected response of the Indian Ocean Dipole to greenhouse warming
Cai, Wenju, Zheng, Xiao-Tong, Weller, Evan, Collins, Mat, Cowan, Tim, Lengaigne, Matthieu, Yu, Weidong and Yamagata, Toshio. 2013. "Projected response of the Indian Ocean Dipole to greenhouse warming." Nature Geoscience. 6 (12), pp. 999-1007. https://doi.org/10.1038/ngeo2009
Southeast Australia autumn rainfall reduction: A climate-change-induced poleward shift of ocean-atmosphere circulation
Cai, Wenju and Cowan, Tim. 2013. "Southeast Australia autumn rainfall reduction: A climate-change-induced poleward shift of ocean-atmosphere circulation." Journal of Climate. 26 (1), pp. 189-205. https://doi.org/10.1175/JCLI-D-12-00035.1
Why is the amplitude of the Indian ocean dipole overly large in CMIP3 and CMIP5 climate models?
Cai, Wenju and Cowan, Tim. 2013. "Why is the amplitude of the Indian ocean dipole overly large in CMIP3 and CMIP5 climate models?" Geophysical Research Letters. 40 (6), pp. 1200-1205. https://doi.org/10.1002/grl.50208
Simulation of the Indian Ocean Dipole: a relevant criterion for selecting models for climate projections
Cai, W., Sullivan, A., Cowan, T., Ribbe, J. and Shi, G.. 2011. "Simulation of the Indian Ocean Dipole: a relevant criterion for selecting models for climate projections." Geophysical Research Letters. 38 (3), pp. 1-5. https://doi.org/10.1029/2010GL046242
Are anthropogenic aerosols responsible for the northwest Australia summer rainfall increase? A CMIP3 perspective and implications
Cai, Wenju, Cowan, Tim, Sullivan, Arnold, Ribbe, Joachim and Shi, Ge. 2011. "Are anthropogenic aerosols responsible for the northwest Australia summer rainfall increase? A CMIP3 perspective and implications." Journal of Climate. 24 (10), pp. 2556-2564. https://doi.org/10.1175/2010JCLI3832.1
An Asymmetry in the IOD and ENSO teleconnection pathway and its impact on australian climate
Cai, Wenju, van Rensch, Peter, Cowan, Tim and Hendon, Harry H.. 2012. "An Asymmetry in the IOD and ENSO teleconnection pathway and its impact on australian climate." Journal of Climate. 25 (18), pp. 6318-6329. https://doi.org/10.1175/JCLI-D-11-00501.1
Rainfall reductions over Southern Hemisphere semi-arid regions: The role of subtropical dry zone expansion
Cai, Wenju, Cowan, Tim and Thatcher, Marcus. 2012. "Rainfall reductions over Southern Hemisphere semi-arid regions: The role of subtropical dry zone expansion." Scientific Reports. 2. https://doi.org/10.1038/srep00702
Variability and trend of the north west Australia rainfall: observations and coupled climate modeling
Shi, Ge, Cai, Wenju, Cowan, Tim, Ribbe, Joachim, Rotstayn, Leon and Dix, Martin. 2008. "Variability and trend of the north west Australia rainfall: observations and coupled climate modeling." Journal of Climate. 21 (12), pp. 2938-2959. https://doi.org/10.1175/2007JCLI1908.1
An interpretation of Australian rainfall projections
Shi, G., Ribbe, J., Cai, W. and Cowan, T.. 2008. "An interpretation of Australian rainfall projections." Geophysical Research Letters. 35 (2), p. L2072. https://doi.org/10.1029/2007GL032436
Anthropogenic aerosol forcing and the structure of temperature trends in the southern Indian Ocean
Cai, Wenju, Cowan, Tim, Dix, Martin, Rotstayn, Leon, Ribbe, Joachim, Shi, Ge and Wijffels, Susan. 2007. "Anthropogenic aerosol forcing and the structure of temperature trends in the southern Indian Ocean." Geophysical Research Letters. 34 (14), p. L14611. https://doi.org/10.1029/2007GL030380
Multidecadal variability in the transmission of ENSO signals to the Indian Ocean
Shi, G., Ribbe, J., Cai, W. and Cowan, T.. 2007. "Multidecadal variability in the transmission of ENSO signals to the Indian Ocean." Geophysical Research Letters. 34 (9), p. L09706. https://doi.org/10.1029/2007GL029528
The response of the southern annular mode, the east Australian current, and the southern mid-latitude ocean circulation to global warming
Cai, W., Shi, G., Cowan, T., Bi, D. and Ribbe, J.. 2005. "The response of the southern annular mode, the east Australian current, and the southern mid-latitude ocean circulation to global warming." Geophysical Research Letters. 32 (23), pp. 1-4. https://doi.org/10.1029/2005GL024701
The impact of Asian and non-Asian anthropogenic aerosols on 20th century Asian summer monsoon
Cowan, T. and Cai, W.. 2011. "The impact of Asian and non-Asian anthropogenic aerosols on 20th century Asian summer monsoon." Geophysical Research Letters. 38 (11). https://doi.org/10.1029/2011GL047268
Teleconnection pathways of ENSO and the IOD and the mechanisms for impacts on Australian rainfall
Cai, Wenju, van Rensch, Peter, Cowan, Tim and Hendon, Harry H.. 2011. "Teleconnection pathways of ENSO and the IOD and the mechanisms for impacts on Australian rainfall." Journal of Climate. 24 (15), pp. 3910-3923. https://doi.org/10.1175/2011JCLI4129.1
Influence of global-scale variability on the subtropical ridge over Southeast Australia
Cai, Wenju, van Rensch, Peter and Cowan, Tim. 2011. "Influence of global-scale variability on the subtropical ridge over Southeast Australia." Journal of Climate. 24 (23), pp. 6035-6053. https://doi.org/10.1175/2011JCLI4149.1
Does the Southern Annular Mode contribute to the persistence of the multidecade-long drought over southwest Western Australia?
Cai, W., van Rensch, P., Borlace, S. and Cowan, T.. 2011. "Does the Southern Annular Mode contribute to the persistence of the multidecade-long drought over southwest Western Australia?" Geophysical Research Letters. 38 (14). https://doi.org/10.1029/2011GL047943
Interactions of ENSO, the IOD, and the SAM in CMIP3 models
Cai, Wenju, Sullivan, Arnold and Cowan, T.. 2011. "Interactions of ENSO, the IOD, and the SAM in CMIP3 models." Journal of Climate. 24 (6), pp. 1688-1704. https://doi.org/10.1175/2010JCLI3744.1
Do IPCC AR4 models produce the rainfall increase over Northwest Australia?
Shi, Ge, Ribbe, Joachim, Cowan, Tim, Sullivan, Arnold and Cai, Wenju. 2010. "Do IPCC AR4 models produce the rainfall increase over Northwest Australia?" Burns, Barbara A., Davis, Clem, Kiss, Andrew E. and Taylor, John R. (ed.) 17th National Conference of the Australian Meteorological and Oceanographic Society: Atmosphere, Oceans, Environment and Society. Canberra, Australia 27 - 29 Jan 2010 Geelong, Victoria, Australia.
How human-induced aerosols influence the ocean–atmosphere circulation: a review
Cowan, Tim and Cai, Wenju. 2010. "How human-induced aerosols influence the ocean–atmosphere circulation: a review." Jubb, Imogen, Holper, Paul and Cai, Wenju (ed.) Managing Climate Change. Australia. CSIRO Publishing. pp. 65-72
Impacts of precipitation and temperature changes on annual streamflow in the Murray-Darling Basin
Yu, Jingjie, Fu, Guobin, Cai, Wenju and Cowan, Tim. 2010. "Impacts of precipitation and temperature changes on annual streamflow in the Murray-Darling Basin." Water International. 35 (3), pp. 313-323. https://doi.org/10.1080/02508060.2010.484907
Simulations of processes associated with the fast warming rate of the southern midlatitude ocean
Cai, Wenju, Cowan, Tim, Godfrey, Stuart and Wijffels, Susan. 2010. "Simulations of processes associated with the fast warming rate of the southern midlatitude ocean." Journal of Climate. 23 (1), pp. 197-206. https://doi.org/10.1175/2009JCLI3081.1
Comment on "On the recent warming in the Murray-Darling Basin: Land surface interactions misunderstood" by Lockart et al
Cai, Wenju, Cowan, Tim, Braganza, Karl, Jones, David and Risbey, James. 2010. "Comment on "On the recent warming in the Murray-Darling Basin: Land surface interactions misunderstood" by Lockart et al." Geophysical Research Letters. 37 (10). https://doi.org/10.1029/2009GL042254
On potential causes for an under-estimated global ocean heat content trend in CMIP3 models
Cai, W., Cowan, T., Arblaster, J. M. and Wijffels, S.. 2010. "On potential causes for an under-estimated global ocean heat content trend in CMIP3 models." Geophysical Research Letters. 37 (17). https://doi.org/10.1029/2010GL044399
A New Index for Tropical Cyclone Development from Sea Surface Temperature and Evaporation Fields
Bye, John A.T., Cai, Wenju and Cowan, Tim. 2010. "A New Index for Tropical Cyclone Development from Sea Surface Temperature and Evaporation Fields ." Hurricanes and Climate Change. United States. Springer. pp. 101-120
How well do IPCC-AR4 models simulate Australian rainfall teleconnections during two-consecutive positive Indian Ocean dipole events?
Sullivan, Arnold, Cai, W. and Cowan, T. D.. 2009. "How well do IPCC-AR4 models simulate Australian rainfall teleconnections during two-consecutive positive Indian Ocean dipole events?" 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Cairns, Australia 13 - 17 Jul 2009 Australia. Modelling and Simulation Society of Australia and New Zealand .
Are declining river inflows linked to rising temperatures? A perspective from the Murray-Darling Basin
Cowan, T. D. and Cai, Wenju. 2009. "Are declining river inflows linked to rising temperatures? A perspective from the Murray-Darling Basin." 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Cairns, Australia 13 - 17 Jul 2009 Australia. Modelling and Simulation Society of Australia and New Zealand .
Methods of assessing the performance of IPCC-AR4 models in simulating Australian rainfall teleconnections with Indo-Pacific climate drivers
Cai, W., Sullivan, A. and Cowan, T.. 2009. "Methods of assessing the performance of IPCC-AR4 models in simulating Australian rainfall teleconnections with Indo-Pacific climate drivers." 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Cairns, Australia 13 - 17 Jul 2009 Australia. Modelling and Simulation Society of Australia and New Zealand .
How rare are the 2006-2008 positive Indian Ocean Dipole events? An IPCC AR4 climate model perspective
Cai, W., Sullivan, A. and Cowan, T.. 2009. "How rare are the 2006-2008 positive Indian Ocean Dipole events? An IPCC AR4 climate model perspective." Geophysical Research Letters. 36 (8). https://doi.org/10.1029/2009GL037982
Rainfall teleconnections with indo-pacific variability in the WCRP CMIP3 models
Cai, Wenju, Sullivan, Arnold and Cowan, Tim. 2009. "Rainfall teleconnections with indo-pacific variability in the WCRP CMIP3 models." Journal of Climate. 22 (19), pp. 5046-5071. https://doi.org/10.1175/2009JCLI2694.1
Climate change contributes to more frequent consecutive positive Indian Ocean Dipole events
Cai, W., Sullivan, A. and Cowan, T.. 2009. "Climate change contributes to more frequent consecutive positive Indian Ocean Dipole events." Geophysical Research Letters. 36 (23). https://doi.org/10.1029/2009GL040163
Argo profiles a rare occurrence of three consecutive positive Indian Ocean Dipole events, 2006-2008
Cai, W., Pan, A., Roemmich, D., Cowan, T. and Guo, X.. 2009. "Argo profiles a rare occurrence of three consecutive positive Indian Ocean Dipole events, 2006-2008." Geophysical Research Letters. 36 (8). https://doi.org/10.1029/2008GL037038
Recent unprecedented skewness towards positive Indian Ocean Dipole occurrences and its impact on Australian rainfall
Cai, W., Cowan, T. and Sullivan, A.. 2009. "Recent unprecedented skewness towards positive Indian Ocean Dipole occurrences and its impact on Australian rainfall." Geophysical Research Letters. 36 (11). https://doi.org/10.1029/2009GL037604
Positive Indian Ocean Dipole events precondition southeast Australia bushfires
Cai, W., Cowan, T. and Raupach, M.. 2009. "Positive Indian Ocean Dipole events precondition southeast Australia bushfires." Geophysical Research Letters. 36 (19). https://doi.org/10.1029/2009GL039902
Rising temperature depletes soil moisture and exacerbates severe drought conditions across southeast Australia
Cai, Wenju, Cowan, Tim, Briggs, Peter and Raupach, Michael. 2009. "Rising temperature depletes soil moisture and exacerbates severe drought conditions across southeast Australia." Geophysical Research Letters. 36 (21). https://doi.org/10.1029/2009GL040334
La Niña Modoki impacts Australia autumn rainfall variability
Cai, W. and Cowan, T.. 2009. "La Niña Modoki impacts Australia autumn rainfall variability." Geophysical Research Letters. 36 (12). https://doi.org/10.1029/2009GL037885
Shoaling of the off-equatorial south Indian Ocean thermocline: Is it driven by anthropogenic forcing?
Cai, Wenju, Sullivan, Arnold and Cowan, Tim. 2008. "Shoaling of the off-equatorial south Indian Ocean thermocline: Is it driven by anthropogenic forcing?" Geophysical Research Letters. 35 (12). https://doi.org/10.1029/2008GL034174
Evidence of impacts from rising temperature on inflows to the Murray-Darling Basin
Cai, Wenju and Cowan, Tim. 2008. "Evidence of impacts from rising temperature on inflows to the Murray-Darling Basin." Geophysical Research Letters. 35 (7). https://doi.org/10.1029/2008GL033390
Dynamics of late autumn rainfall reduction over southeastern Australia
Cai, Wenju and Cowan, Tim. 2008. "Dynamics of late autumn rainfall reduction over southeastern Australia." Geophysical Research Letters. 35 (9). https://doi.org/10.1029/2008GL033727
The south-east Australia drought: Possible causes
Cai, W. and Cowan, T.. 2008. "The south-east Australia drought: Possible causes." Water: Official journal of the Australian Water and Wastewater Association. 35 (5), pp. 95-97.
A dataset of the wind-driven global ocean circulation for climate research
Shi, Sue, Ribbe, Joachim, Cowan, Tim and Cai, Wenju. 2007. "A dataset of the wind-driven global ocean circulation for climate research." 14th National Conference of the Australian Meteorological and Oceanographic Society. Adelaide, Australia 05 - 08 Feb 2007 Adelaide, Australia.
A dataset of the wind-driven global ocean circulation for climate research
Shi, Sue, Ribbe, Joachim, Cowan, Tim and Cai, Wenju. 2007. A dataset of the wind-driven global ocean circulation for climate research. Toowoomba, Australia. Joachim Ribbe.
Trends in Southern Hemisphere circulation in IPCC AR4 models over 1950-99: Ozone depletion versus greenhouse forcing
Cai, Wenju and Cowan, Tim. 2007. "Trends in Southern Hemisphere circulation in IPCC AR4 models over 1950-99: Ozone depletion versus greenhouse forcing." Journal of Climate. 20 (4), pp. 681-693. https://doi.org/10.1175/JCLI4028.1
Impacts of increasing anthropogenic aerosols on the atmospheric circulation trends of the Southern Hemisphere: An air-sea positive feedback
Cai, Wenju and Cowan, Tim. 2007. "Impacts of increasing anthropogenic aerosols on the atmospheric circulation trends of the Southern Hemisphere: An air-sea positive feedback." Geophysical Research Letters. 34 (23). https://doi.org/10.1029/2007GL031706
SAM and regional rainfall in IPCC AR4 models: Can anthropogenic forcing account for southwest Western Australian winter rainfall reduction?
Cai, Wenju and Cowan, Tim. 2006. "SAM and regional rainfall in IPCC AR4 models: Can anthropogenic forcing account for southwest Western Australian winter rainfall reduction?" Geophysical Research Letters. 33 (24). https://doi.org/10.1029/2006GL028037
Pan-oceanic response to increasing anthropogenic aerosols: Impacts on the Southern Hemisphere oceanic circulation
Cai, W., Bi, D., Church, J., Cowan, T., Dix, M. and Rotstayn, L.. 2006. "Pan-oceanic response to increasing anthropogenic aerosols: Impacts on the Southern Hemisphere oceanic circulation." Geophysical Research Letters. 33 (21). https://doi.org/10.1029/2006GL027513
Large-scale vertical momentum, kinetic energy and moisture fluxes in the antarctic sea-ice region
Simmonds, Ian, Rafter, Anthony, Cowan, Timothy, Watkins, Andrew B. and Keay, Kevin. 2005. "Large-scale vertical momentum, kinetic energy and moisture fluxes in the antarctic sea-ice region." Boundary-Layer Meteorology: an international journal of physical and biological processes in the atmospheric boundary layer. 117 (1), pp. 149-177. https://doi.org/10.1007/s10546-004-5939-6
Sonoluminescence quenching by organic acids in aqueous solution: pH and frequency effects
Price, Gareth J. P, Ashokkumar, Muthupandian, Cowan, Timothy D. and Grieser, Franz. 2002. "Sonoluminescence quenching by organic acids in aqueous solution: pH and frequency effects." Chemical Communications. 16 (16), p. 1740–1741. https://doi.org/10.1039/B201795D