North Indian Ocean tropical cyclone activities influenced by the Indian Ocean Dipole mode

Yuan, Junpeng; Cao, Jie

doi:10.1007/s11430-012-4559-0

Cited by 55 publications

(47 citation statements)

References 30 publications

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“…This result seems to be inconsistent with the previous investigation that showed that the TCG frequency over the north Indian Ocean is lower during the positive phases of IOD [20]. The seemingly contradicting results may depend on the specific time period of analysis interest.…”

Section: Categorycontrasting

confidence: 99%

“…The complicated distribution over the NEI region is considered to be due to the geographical character of the Bay of Bengal, which is located to the south of the Asian continent, which would critically affect regional-scale weather and climate. There are studies that investigated the impacts of ENSO and/or IOD on the activities of TCs in the Bay of Bengal [16,20]. Such studies will reveal the regional characteristics of TC activity in the north Indian Ocean, including the Bay of Bengal.…”

Section: Discussionmentioning

confidence: 99%

“…There are four positive-phase IOD years among the 11 MJO active years, and three negative-phase IOD years among the other 22 years. The study, which investigated the influences of IOD on the TC activity over the north Indian Ocean [20], showed that the frequency of TC occurrence over the north Indian Ocean is lower during the positive phases of IOD. This is because during the positive IOD phases, SST anomalies over the north Indian Ocean are warmer in the western part and colder in the eastern part, inducing anticyclonic circulation at lower levels and thus resulting in the reduction of TCG over the region.…”

Section: Categorymentioning

confidence: 99%

“…In other words, the time frame employed in our analysis is considered to diminish the effects of IOD. Considering the complicated nature of the IOD influences on TCG [16,20], the roles of IOD on TCG over the tropical Indian Ocean as a whole requires further analysis.…”

Section: Categorymentioning

confidence: 99%

“…Furthermore, the Indian Ocean Dipole (IOD) mode [19] is one of the pronounced phenomena in the tropical coupled atmosphere-ocean system in the Indian Ocean, and is considered to influence the TC activity in the Indian Ocean and in the southern Pacific [16,20,21]. Depending on the phases of ENSO and IOD, the sea surface temperature (SST) over the Indian Ocean varies, which may affect TCG.…”

Section: Introductionmentioning

confidence: 99%

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Seasonal Environmental Characteristics for the Tropical Cyclone Genesis in the Indian Ocean during the CINDY2011/DYNAMO Field Experiment

2016

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This study investigated the seasonal environmental characteristics for tropical cyclone genesis (TCG) over the Indian Ocean during the Cooperative Indian Ocean Experiment on Intraseasonal Variability in the Year 2011 and the Dynamics of the Madden-Julian Oscillation (MJO) (CINDY2011/DYNAMO) field experiment and compare them with long-term climatological features. It was found that the spatial pattern of an empirical environmental index for TCG over the tropical Indian Ocean in 2011 is very similar to the feature composited over the years with high activity of MJO. The analyses of the contributions from each environmental factor indicated that relative humidity, absolute vorticity, and vertical velocity contribute to generate positive influences on the conditions for TCG in 2011. The influences of La Niña appear only through a shear effect over the Indian Ocean in 2011. Under the influences of active MJO events during the CINDY2011/DYNAMO period, the environmental conditions for TCG over the Indian Ocean are determined more strongly by MJO than by La Niña, through modifications of some environmental properties favorable for TCG. The environmental characteristics during CINDY2011/DYNAMO seem to be quite typical of the MJO active years; in such a case, the influences of El Niño/La Niña would not appear in determining the environmental conditions for TCG over the Indian Ocean.

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Section: Categorycontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Categorymentioning

confidence: 99%

Section: Categorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seasonal Environmental Characteristics for the Tropical Cyclone Genesis in the Indian Ocean during the CINDY2011/DYNAMO Field Experiment

2016

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A review of tropical cyclone‐generated storm surges: Global data sources, observations, and impacts

Needham

Keim

Sathiaraj

2015

Reviews of Geophysics

242

115

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Tropical cyclone-generated storm surges are among the world's most deadly and destructive natural hazards. This paper provides the first comprehensive global review of tropical storm surge data sources, observations, and impacts while archiving data in SURGEDAT, a global database. Available literature has provided data for more than 700 surge events since 1880, the majority of which are found in the western North Atlantic (WNA), followed by Australia/Oceania, the western North Pacific (WNP), and the northern Indian Ocean (NIO). The Bay of Bengal (BOB) in the NIO consistently observes the world's highest surges, as this subbasin averages five surges ≥5 m per decade and has observed credible storm tide levels reaching 13.7 m. The WNP observes the highest rate of low-magnitude surges, as the coast of China averages 54 surges ≥1 m per decade, and rates are likely higher in the Philippines. The U.S. Gulf Coast observes the second highest frequency of both high-magnitude (≥5 m) and low-magnitude (≥1 m) surges. The BOB observes the most catastrophic surge impacts, as 59% of global tropical cyclones that have killed at least 5000 people occurred in this basin. The six deadliest cyclones in this region have each killed at least 140,000 people, and two events have killed 300,000. Storm surge impacts transportation, agriculture, and energy sectors in the WNA. Oceania experiences long-term impacts, including contamination of fresh water and loss of food supplies, although the highest surges in this region are lower than most other basins.

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Regional influence of climate patterns on the wave climate of the southwestern Pacific: The New Zealand region

2016

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This work investigates how the wave climate around New Zealand and the southwest Pacific is modulated by the Pacific Decadal Oscillation (PDO), El Niño-Southern Oscillation (ENSO), Indian Ocean Dipole (IOD), Zonal Wave-number-3 Pattern (ZW3), and Southern Annular Mode (SAM) during the period 1958-2001. Their respective climate indices were correlated with modeled mean wave parameters extracted from a 45 year wave hindcast carried out with the WAVEWATCH III model using the wind and ice fields from the ERA-40 reanalysis project. The correlation was performed using the Pearson's correlation coefficient and the wavelet spectral analysis. Prior to that, mean annual and interannual variabilities and trends in significant wave height (H s ) were computed over 44 years . In general, higher annual and interannual variabilities were found along the coastline, in regions dominated by local winds. An increasing trend in H s was found around the country, with values varying between 1 and 6 cm/decade at the shoreline. The greatest H s trends were identified to the south of 488S, suggesting a relationship with the positive trend in the SAM. Seasonal to decadal time scales of the SAM strongly influenced wave parameters throughout the period analyzed. In addition, larger waves were observed during extreme ENSO and IOD events at interannual time scale, while they were more evident at seasonal and intraseasonal time scales in the correlations with the ZW3. Negative phases of the ZW3 and ENSO and positive phases of the IOD, PDO, and SAM resulted in larger waves around most parts of New Zealand.

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North Indian Ocean tropical cyclone activities influenced by the Indian Ocean Dipole mode

Cited by 55 publications

References 30 publications

Seasonal Environmental Characteristics for the Tropical Cyclone Genesis in the Indian Ocean during the CINDY2011/DYNAMO Field Experiment

Seasonal Environmental Characteristics for the Tropical Cyclone Genesis in the Indian Ocean during the CINDY2011/DYNAMO Field Experiment

A review of tropical cyclone‐generated storm surges: Global data sources, observations, and impacts

Regional influence of climate patterns on the wave climate of the southwestern Pacific: The New Zealand region

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