scholarly journals The Bay of Bengal upper-ocean response to tropical cyclone forcing during 1999

2014 ◽  
Vol 119 (1) ◽  
pp. 98-120 ◽  
Author(s):  
Jih-Wang Wang ◽  
Weiqing Han
Keyword(s):  
Tropical Cyclone ◽  
Bay Of Bengal ◽  
Upper Ocean ◽  
Ocean Response ◽  
Upper Ocean Response

scholarly journals Upper-Ocean Response to the Super Tropical Cyclone Phailin (2013) over the Freshwater Region of the Bay of Bengal

2019 ◽  
Vol 49 (5) ◽  
pp. 1201-1228 ◽  
Author(s):  
Yun Qiu ◽  
Weiqing Han ◽  
Xinyu Lin ◽  
B. Jason West ◽  
Yuanlong Li ◽  
...  
Keyword(s):  
Tropical Cyclone ◽  
Bay Of Bengal ◽  
Heat Fluxes ◽  
Sea Surface ◽  
Sea Surface Salinity ◽  
Upper Ocean ◽  
Surface Salinity ◽  
Ocean Response ◽  
Upper Ocean Response ◽  
The Impact

AbstractThis study investigates the impact of salinity stratification on the upper-ocean response to a category 5 tropical cyclone, Phailin, that crossed the northern Bay of Bengal (BOB) from 8 to 13 October 2013. A drastic increase of up to 5.0 psu in sea surface salinity (SSS) was observed after Phailin’s passage, whereas a weak drop of below 0.5°C was observed in sea surface temperature (SST). Rightward biases were apparent in surface current and SSS but not evident in SST. Phailin-induced SST variations can be divided into the warming and cooling stages, corresponding to the existence of the thick barrier layer (BL) and temperature inversion before and erosion after Phailin’s passage, respectively. During the warming stage, SST increased due to strong entrainment of warmer water from the BL, which overcame the cooling induced by surface heat fluxes and horizontal advection. During the cooling stage, the entrainment and upwelling dominated the SST decrease. The preexistence of the BL, which reduced entrainment cooling by ~1.09°C day−1, significantly weakened the overall Phailin-induced SST cooling. The Hybrid Coordinate Ocean Model (HYCOM) experiments confirm the crucial roles of entrainment and upwelling in the Phailin-induced dramatic SSS increase and weak SST decrease. Analyses of upper-ocean stratification associated with 16 super TCs that occurred in the BOB during 1980–2015 show that intensifications of 13 TCs were associated with a thick isothermal layer, and 5 out of the 13 were associated with a thick BL. The calculation of TC intensity with and without considering subsurface temperature demonstrates the importance of large upper-ocean heat storage in TC growth.

Modeling studies of the upper ocean response to a tropical cyclone

2006 ◽  
Vol 56 (5-6) ◽  
pp. 594-606 ◽  
Author(s):  
Steven L. Morey ◽  
Mark A. Bourassa ◽  
Dmitry S. Dukhovskoy ◽  
James J. O’Brien
Keyword(s):  
Tropical Cyclone ◽  
Upper Ocean ◽  
Ocean Response ◽  
Modeling Studies ◽  
Upper Ocean Response

Contrasting the upper ocean response to two intense cyclones in the Bay of Bengal

2019 ◽  
Vol 147 ◽  
pp. 65-78 ◽  
Author(s):  
K.N. Navaneeth ◽  
M.V. Martin ◽  
K. Jossia Joseph ◽  
R. Venkatesan
Keyword(s):  
Bay Of Bengal ◽  
Upper Ocean ◽  
Ocean Response ◽  
Upper Ocean Response

scholarly journals Upper Oceanic Energy Response to Tropical Cyclone Passage

2013 ◽  
Vol 26 (8) ◽  
pp. 2631-2650 ◽  
Author(s):  
John A. Knaff ◽  
Mark DeMaria ◽  
Charles R. Sampson ◽  
James E. Peak ◽  
James Cummings ◽  
...  
Keyword(s):  
Tropical Cyclone ◽  
Energy Content ◽  
Energy Conditions ◽  
Upper Ocean ◽  
Ocean Energy ◽  
Translation Speed ◽  
Structure Information ◽  
Sst Cooling ◽  
Ocean Response ◽  
Upper Ocean Response

Abstract The upper oceanic temporal response to tropical cyclone (TC) passage is investigated using a 6-yr daily record of data-driven analyses of two measures of upper ocean energy content based on the U.S. Navy’s Coupled Ocean Data Assimilation System and TC best-track records. Composite analyses of these data at points along the TC track are used to investigate the type, magnitude, and persistence of upper ocean response to TC passage, and to infer relationships between routinely available TC information and the upper ocean response. Upper oceanic energy decreases in these metrics are shown to persist for at least 30 days—long enough to possibly affect future TCs. Results also indicate that TC kinetic energy (KE) should be considered when assessing TC impacts on the upper ocean, and that existing TC best-track structure information, which is used here to estimate KE, is sufficient for such endeavors. Analyses also lead to recommendations concerning metrics of upper ocean energy. Finally, parameterizations for the lagged, along-track, upper ocean response to TC passage are developed. These show that the sea surface temperature (SST) is best related to the KE and the latitude whereas the upper ocean energy is a function of KE, initial upper ocean energy conditions, and translation speed. These parameterizations imply that the 10-day lagged SST cooling is approximately 0.7°C for a “typical” TC at 30° latitude, whereas the same storm results in 10-day (30-day) lagged decreases of upper oceanic energy by about 12 (7) kJ cm−2 and a 0.5°C (0.3°C) cooling of the top 100 m of ocean.

scholarly journals Upper Ocean Response to Rain Observed From a Vertical Profiler

2019 ◽  
Vol 124 (6) ◽  
pp. 3664-3681 ◽  
Author(s):  
A. Doeschate ◽  
G. Sutherland ◽  
H. Bellenger ◽  
S. Landwehr ◽  
L. Esters ◽  
...  
Keyword(s):  
Upper Ocean ◽  
Ocean Response ◽  
Upper Ocean Response
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