Tropical cyclone genesis in the Southern Hemisphere and its relationship with the ENSO

Kuleshov, Yuriy; Ming, Fabrice Chane; Qi, Lixin; Chouaibou, I.; Hoareau, Christophe; Roux, Frank

doi:10.5194/angeo-27-2523-2009

Cited by 53 publications

(71 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The number of landfalling TCs has declined since the late 1800s (Callaghan and Power, 2011); the cause of this remains unclear. El Niño (La Niña) is associated with an eastward (westward) shift in tropical cyclogenesis regions in the Southwest Pacific, reducing (increasing) the number of landfalling TCs in eastern Australia (Hastings, 1990;Kuleshov et al, 2009). Callaghan and Power (2011) demonstrated that all years with multiple TC landfalls were La Niña years, while Walsh and Syktus (2003) concluded that near the Queensland coast strong La Niña conditions were associated with five times as many TC days as strong El Niño conditions.…”

Section: Drivers Of Inter-annual and Decadal Rainfall Variabilitymentioning

confidence: 99%

On the drivers of inter‐annual and decadal rainfall variability in Queensland, Australia

Klingaman

Woolnough

Syktus³

2012

Intl Journal of Climatology

View full text Add to dashboard Cite

Queensland experiences considerable inter-annual and decadal rainfall variability, which impacts waterresource management, agriculture and infrastructure. To understand the mechanisms by which large-scale atmospheric and coupled air-sea processes drive these variations, empirical orthogonal teleconnection (EOT) analysis is applied to 1900-2010 seasonal Queensland rainfall. Fields from observations and the 20th Century Reanalysis are regressed onto the EOT timeseries to associate the EOTs with large-scale drivers. In winter, spring and summer the leading, state-wide EOTs are highly correlated with the El Niño-Southern Oscillation (ENSO); the Inter-decadal Pacific Oscillation modulates the summer ENSO teleconnection. In autumn, the leading EOT is associated with locally driven, late-season monsoon variations, while ENSO affects only tropical northern Queensland. Examining EOTs beyond the first, southeastern Queensland and the Cape York peninsula emerge as regions of coherent rainfall variability. In the southeast, rainfall anomalies respond to the strength and moisture content of onshore easterlies, controlled by Tasman Sea blocking. The summer EOT associated with onshore flow and blocking has been negative since 1970, consistent with the observed decline in rainfall along the heavily populated coast. The southeastern Queensland EOTs show considerable multi-decadal variability, which is independent of large-scale drivers. Summer rainfall in Cape York is associated with tropical-cyclone activity.

show abstract

Section: Drivers Of Inter-annual and Decadal Rainfall Variabilitymentioning

confidence: 99%

On the drivers of inter‐annual and decadal rainfall variability in Queensland, Australia

Klingaman

Woolnough

Syktus³

2012

Intl Journal of Climatology

View full text Add to dashboard Cite

show abstract

“…Here the SOI index is also anti-correlated with temperature, which is in agreement with most results published in the literature. As discussed by Kuleshov et al (2009), ENSO induces anomalous circulation in the Indian region. ENSO affects the intensity of the easterly winds as well as the SST and the relative humidity in the middle troposphere and thus changes Walker circulation.…”

Section: Correlation Analysis: Enso Iod Qbo Ssnmentioning

confidence: 99%

Investigation of weather anomalies in the low-latitude islands of the Indian Ocean in 1991

Réchou¹,

Kirkwood

2015

Ann. Geophys.

View full text Add to dashboard Cite

International audienceTemperature, precipitation and sunshine duration measurements at meteorological stations across the southern Indian Ocean have been analysed to try to differentiate the possible influence of the Mount Pinatubo volcanic eruption in the Philippines in June 1991 and the normal weather forc- ings. During December 1991, precipitation on the tropical is- lands Glorieuses (11.6◦ S) and Mayotte (12.8◦ S) was 4 and 3 times greater, respectively, than the climatological mean (precipitation is greater by more than than twice the standard deviation (SD)). Mean sunshine duration (expressed in sun hours per day) was only 6 h on Mayotte, although the sun- shine duration is usually more than 7.5 ± 0.75 h, and on the Glorieuses it was only 5 h, although it is usually 8.5 ± 1 h. Mean and SD of sunshine duration are based on December (1964–2001 for Mayotte, 1966–1999 for the Glorieuses).The Madden–Julian Oscillation (MJO) is shown to corre- late best with precipitation in this area. Variability controlling the warm zone on these two islands can be increased by the Indian Ocean Dipole (IOD), El Niño, the quasi-biennial os- cillation (QBO) and/or solar activity (sunspot number, SSN). However, temperature records of these two islands show weak dependence on such forcings (temperatures are close to the climatological mean for December). This suggests that such weather forcings have an indirect effect on the precipi- tation.December 1991 was associated with unusually low val- ues of the MJO index, which favours high rainfall, as well as with El Niño, eastern QBO and high SSN, which favour high variability. It is therefore not clear whether the Mount Pinatubo volcanic eruption had an effect. Since the precipitation anomalies at the Glorieuses and Mayotte are more or less local (Global Precipitation Climatology Project (GPCP) data) and the effect of the Pinatubo volcanic cloud should be more widespread, it seems unlikely that Pinatubo was the cause.Islands at higher southern latitudes (south of Tromelin at 15.5◦ S) were not affected by the Pinatubo eruption in terms of sunshine duration, precipitation or temperature

show abstract

“…A number of environmental factors critical for SIO cyclone development has been identified. For example, Kuleshov et al (2009a) attribute shifts in cyclone tracks during ENSO phases to changes in vorticity and relative humidity and Camargo et al (2007) showed that the track shifts are primarily due to changes in vertical wind shear.…”

Section: Large-scale Environmental Variables Which Influence Tropicalmentioning

confidence: 99%

“…Analysing geographical variation in TC activity in the SPO, Basher and Zheng (1995) and Kuleshov et al (2009a) have demonstrated that cyclones tend to form in the southwest of the basin in La Niña years compared with El Niño years. A plausible explanation for this eastwest shift is change in distribution of the sea surface temperatures over the Pacific during El Niño and La Niña.…”

Section: Large-scale Environmental Variables Which Influence Tropicalmentioning

confidence: 99%

Southern Hemisphere Tropical Cyclone Climatology

Kuleshov¹

2012

Modern Climatology

View full text Add to dashboard Cite

Tropical cyclone genesis in the Southern Hemisphere and its relationship with the ENSO

Cited by 53 publications

References 23 publications

On the drivers of inter‐annual and decadal rainfall variability in Queensland, Australia

On the drivers of inter‐annual and decadal rainfall variability in Queensland, Australia

Investigation of weather anomalies in the low-latitude islands of the Indian Ocean in 1991

Southern Hemisphere Tropical Cyclone Climatology

Contact Info

Product

Resources

About