Response of the upper ocean to tropical cyclone in the Northwest Pacific observed by gliders during fall 2018

The evolution of thermohaline structure at the upper ocean during three tropical cyclones (TCs) in the Northwest Pacific was studied in this study based on successive observation by two new-style underwater gliders during fall 2018. These remote-controllable gliders with CTD sensor enabled us to exp...

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Bibliographic Details
Published in:Acta oceanologica Sinica 2021, Vol.40 (1), p.103-112
Main Authors: Ni, Zekai, Yu, Jiancheng, Shang, Xuekun, Jin, Wenming, Luo, Yeteng, Vetter, Philip A., Jiang, Huichang, Yu, Liu, Liu, Sumin, Xu, Hongzhou
Format: Article
Language:English
Subjects:
Barrier layers
Climatology
Controllability
Cooling
Cyclones
Datasets
Earth and Environmental Science
Earth Sciences
Ecology
Engineering Fluid Dynamics
Environmental Chemistry
Gliders
Heat
High frequency
Hurricanes
Inertia
Marine & Freshwater Sciences
Mixed layer
Mixed layer depth
Ocean circulation
Oceanography
Oceans
Precipitation
Remote observing
Remote sensors
Sea surface
Sea surface temperature
Solar radiation
Stratification
Temperature inversion
Temperature inversions
Thermohaline structure
Tropical climate
Tropical cyclones
Underwater gliders
Underwater vehicles
Upper ocean
Weather
Wind
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Summary:The evolution of thermohaline structure at the upper ocean during three tropical cyclones (TCs) in the Northwest Pacific was studied in this study based on successive observation by two new-style underwater gliders during fall 2018. These remote-controllable gliders with CTD sensor enabled us to explore high frequency responses of temperature, salinity, mixed and barrier layers in the upper ocean to severe TCs in this area. Results showed that three significant cooling-to-warming and stratification destructing-to-reconstructing processes at the mixed layer occurred during the lives of three TCs. The maximal cooling of SST all reached ⩾=0.5°C although TCs with different intensities had different minimal distances to the observed area. Under potential impacts of solar radiation, tide and inertial motions, the mixed layer depth possessed significant high-frequency fluctuations during TC periods. In addition, barrier layers appeared and vanished quickly during TCs, accompanied with varied temperature inversion processes.
ISSN:0253-505X
1869-1099
DOI:10.1007/s13131-020-1672-3