Potential impact of the Pacific Decadal Oscillation and sea surface temperature in the tropical Indian Ocean–Western Pacific on the variability of typhoon landfall on the China coast

Knowledge of the processes that control East African rainfall is essential for the development of seasonal forecasting systems, which may mitigate the effects of flood and drought. This study uses observational data to unravel the relationship between the Indian Ocean Dipole (IOD), the El Niño Southern Oscillation (ENSO) and rainy autumns in East Africa. Analysis of sea–surface temperature data shows that strong East African rainfall is associated with warming in the Pacific and Western Indian Oceans and cooling in the Eastern Indian Ocean. The resemblance of this pattern to that which develops during IOD events implies a link between the IOD and strong East African rainfall. Further investigation suggests that the observed teleconnection between East African rainfall and ENSO is a manifestation of a link between ENSO and the IOD.

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Relationship Between Cyclone Intensities and Sea Surface Temperature in the Tropical Indian Ocean

IEEE Geoscience and Remote Sensing Letters ◽

10.1109/lgrs.2012.2226138 ◽

2013 ◽

Vol 10 (4) ◽

pp. 841-844 ◽

Cited By ~ 16

Author(s):

M. M. Ali ◽

D. Swain ◽

T. Kashyap ◽

J. P. McCreary ◽

P. V. Nagamani

Keyword(s):

Indian Ocean ◽

Surface Temperature ◽

Sea Surface Temperature ◽

Tropical Indian Ocean ◽

Sea Surface

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On the Role of Sea Surface Temperature Variability over the Tropical Indian Ocean in Relation to Summer Monsoon Using Satellite Data

Remote Sensing of Environment ◽

10.1016/s0034-4257(99)00028-0 ◽

1999 ◽

Vol 70 (2) ◽

pp. 238-244 ◽

Cited By ~ 6

Author(s):

M.R.Ramesh Kumar ◽

P.M. Muraleedharan ◽

P.V. Sathe

Keyword(s):

Indian Ocean ◽

Surface Temperature ◽

Sea Surface Temperature ◽

Summer Monsoon ◽

Satellite Data ◽

Tropical Indian Ocean ◽

Temperature Variability ◽

Sea Surface

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Nutrient enrichment induced by tropical cyclone Seroja in the southeastern tropical Indian Ocean

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/925/1/012021 ◽

2021 ◽

Vol 925 (1) ◽

pp. 012021

Author(s):

D W Purnaningtyas ◽

F Khadami ◽

Avrionesti

Keyword(s):

Tropical Cyclone ◽

Indian Ocean ◽

Surface Temperature ◽

Sea Surface Temperature ◽

Nutrient Enrichment ◽

Tropical Indian Ocean ◽

Sea Surface ◽

Nutrient Concentrations ◽

Biochemical Alterations ◽

Southeastern Tropical Indian Ocean

Abstract Tropical cyclone (TC) passage triggers a complex response from the adjacent ocean, including vertical mixing, leading to biochemical alterations and affecting the surrounding ecosystem’s dynamics. In previous studies, increased nutrient concentrations and primary production were observed along the cyclone track after the storm. TC Seroja was awakened near the equator in the southeastern tropical Indian Ocean, making it interesting to investigate how the ambient ecosystem responds. Hence, we analyzed the sea surface temperature and nutrient changes during the Seroja event using multi-satellite remote sensing and numerical model data in the south of Indonesia and East Timor along the Seroja track between April 2 and 10, 2021. Immediately after the TC Seroja passed, the sea surface temperature cooled to 3 °C around the TC lane. At the same time, the spatial distribution patterns showed the upsurge of some nutrients in response to the passage of TC Seroja; the surface nitrate swells up to 1.5 mmol/m3, while phosphate increased up to 0.2 mmol/m3, and the dissolved silicate concentration enhanced up to 1.0 mmol/m3. The responses recover within 2-7 days. These results indicate that tropical cyclones contribute to nutrient enrichment in oligotrophic areas outside of their usual annual upwelling time, thereby further supporting ecosystem sustainability.

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