Features of ocean surface winds observed by the QuikSCAT satellite before tropical cyclogenesis over the South China Sea

2008 ◽  
Vol 7 (3) ◽  
pp. 241-245 ◽  
Author(s):  
Lei Wang ◽  
Kai-Hon Lau ◽  
Chi-Hung Fung ◽  
Qinghong Zhang
Keyword(s):  
South China Sea ◽  
South China ◽  
Ocean Surface ◽  
The South China Sea ◽  
Tropical Cyclogenesis ◽  
Surface Winds ◽  
The South ◽  
China Sea ◽  
Ocean Surface Winds

scholarly journals Modulation Effect of Mesoscale Eddies on Sequential Typhoon-Induced Oceanic Responses in the South China Sea

2020 ◽  
Vol 12 (18) ◽  
pp. 3059 ◽  
Author(s):  
Weifang Jin ◽  
Chujin Liang ◽  
Junyang Hu ◽  
Qicheng Meng ◽  
Haibin Lü ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Mesoscale Eddies ◽  
Ocean Surface ◽  
The South China Sea ◽  
Ocean Dynamics ◽  
The South ◽  
Remotely Sensed Data ◽  
Translation Speed ◽  
China Sea

The impacts of mesoscale eddies on the modulation of typhoon-induced oceanic responses are important for understanding ocean dynamics. Satellite observations identified prominent ocean surface temperature and chlorophyll changes over the regions with mesoscale eddies after two sequential typhoons, e.g., Linfa and Nangka, in the South China Sea. The impacts of typhoons on the ocean surface were more prominent within cyclonic eddies than within anticyclonic eddies. The wind speed (translation speed) of Linfa was much larger (slower) than that of Nangka; thus, the changes induced by Linfa were stronger. However, the second typhoon easily generated mixing through the weak stratification induced by the first typhoon and impacted the upper ocean. The strong chlorophyll enhancement induced by Nangka was identified at a cyclonic eddy. Using a combination of reanalysis data, the depth of water origin (DWO) was applied to quantify the depth to which a typhoon’s impact could be exerted. Prominent changes were identified when the DWO reached the depth at which the temperature and nutrients differed from those within the mixed layer. This method can overcome the impacts of cloud coverage when examining a typhoon’s influence with remotely sensed data and offers a quantitative approach to determine the mechanisms responsible for typhoon-induced ocean surface changes.

Sign in / Sign up

Export Citation Format

Share Document