Sensitive study of the long and short surface wave-induced vertical mixing in a wave-circulation coupled model

2012 ◽  
Vol 31 (4) ◽  
pp. 1-10
Author(s):  
Chang Zhao ◽  
Fangli Qiao ◽  
Changshui Xia ◽  
Guansuo Wang
Keyword(s):  
Surface Wave ◽  
Vertical Mixing ◽  
Coupled Model ◽  
Wave Induced

scholarly journals Effects of the Non-breaking Surface Wave-induced Vertical Mixing on Winter Mixed Layer Depth in Subtropical Regions

2018 ◽  
Vol 123 (4) ◽  
pp. 2934-2944 ◽  
Author(s):  
Siyu Chen ◽  
Fangli Qiao ◽  
Chuanjiang Huang ◽  
Zhenya Song
Keyword(s):  
Surface Wave ◽  
Mixed Layer ◽  
Mixed Layer Depth ◽  
Vertical Mixing ◽  
Layer Depth ◽  
Winter Mixed Layer ◽  
Wave Induced

Improvement of MOM4 by including surface wave-induced vertical mixing

2011 ◽  
Vol 40 (1) ◽  
pp. 42-51 ◽  
Author(s):  
Qi Shu ◽  
Fangli Qiao ◽  
Zhenya Song ◽  
Changshui Xia ◽  
Yongzeng Yang
Keyword(s):  
Surface Wave ◽  
Vertical Mixing ◽  
Wave Induced

scholarly journals Coastal flooding: impact of waves on storm surge during extremes. A case study for the German Bight

2016 ◽  
Author(s):  
Joanna Staneva ◽  
Kathrin Wahle ◽  
Wolfgang Koch ◽  
Arno Behrens ◽  
Luciana Fenoglio-Marc ◽  
...  
Keyword(s):  
Sea Level ◽  
German Bight ◽  
Wind Waves ◽  
Vertical Mixing ◽  
Three Dimensional ◽  
Coupled Model ◽  
Circulation Model ◽  
Coastal Flooding ◽  
Resolution Model ◽  
Wave Induced

Abstract. This study addresses impact of wind, waves, tidal forcing and baroclinicity on the sea level of the German Bight during extremes. The role of waves-induced processes, tides and baroclinicity is quantified and the results are compared with observational data that include various in-situ measurements as well as satellite data. A coupled, high-resolution, model system is used to simulate the wind waves, water level and three-dimensional hydrodynamics. The effects of the wind waves on sea level variability are studied accounting for wave-dependent stress, wave-breaking parameterization and wave-induced effects on vertical mixing. The analyses of the coupled model results reveal a closer match with observations than for the stand-alone circulation model, especially during the extreme storm Xaver in December 2013. The predicted surge of the coupled model enhances significantly during extremes when considering wave-current interaction processes. The wave-dependent approach yields to a contribution of more than 30 % in some coastal area during extremes. The improved skill resulting from the new developments justifies further use of coupled wave and three dimensional circulation models for improvement of coastal flooding predictions.

Contribution of surface wave-induced vertical mixing to heat content in global upper ocean

2019 ◽  
Vol 38 (2) ◽  
pp. 307-313 ◽  
Author(s):  
Siyu Chen ◽  
Fangli Qiao ◽  
Chuanjiang Huang ◽  
Zhenya Song
Keyword(s):  
Surface Wave ◽  
Vertical Mixing ◽  
Heat Content ◽  
Upper Ocean ◽  
Wave Induced

scholarly journals Dynamical Response of Changjiang River Plume to a Severe Typhoon With the Surface Wave‐Induced Mixing

2018 ◽  
Vol 123 (12) ◽  
pp. 9369-9388 ◽  
Author(s):  
Zhiwei Zhang ◽  
Hui Wu ◽  
Xunqiang Yin ◽  
Fangli Qiao
Keyword(s):  
Surface Wave ◽  
River Plume ◽  
Dynamical Response ◽  
Changjiang River ◽  
Wave Induced

scholarly journals Impact of oceanic processes on the carbon cycle during the last termination

2011 ◽  
Vol 7 (3) ◽  
pp. 1887-1934 ◽  
Author(s):  
N. Bouttes ◽  
D. Paillard ◽  
D. M. Roche ◽  
C. Waelbroeck ◽  
M. Kageyama ◽  
...  
Keyword(s):  
Carbon Cycle ◽  
Southern Ocean ◽  
Sea Ice ◽  
Vertical Mixing ◽  
Coupled Model ◽  
Salty Water ◽  
Iron Fertilization ◽  
Transient Simulations ◽  
Carbon Pump ◽  
Complex Models

Abstract. During the last termination (from ~18 000 yr ago to ~9000 yr ago) the climate significantly warmed and the ice sheets melted. Simultaneously, atmospheric CO2 increased from ~190 ppm to ~260 ppm. Although this CO2 rise plays an important role in the deglacial warming, the reasons for its evolution are difficult to explain. Only box models have been used to run transient simulations of this carbon cycle transition, but by forcing the model with data constrained scenarios of the evolution of temperature, sea level, sea ice, NADW formation, Southern Ocean vertical mixing and biological carbon pump. More complex models (including GCMs) have investigated some of these mechanisms but they have only been used to try and explain LGM versus present day steady-state climates. In this study we use a climate-carbon coupled model of intermediate complexity to explore the role of three oceanic processes in transient simulations: the sinking of brines, stratification-dependant diffusion and iron fertilization. Carbonate compensation is accounted for in these simulations. We show that neither iron fertilization nor the sinking of brines alone can account for the evolution of CO2, and that only the combination of the sinking of brines and interactive diffusion can simultaneously simulate the increase in deep Southern Ocean δ13C. The scenario that agrees best with the data takes into account all mechanisms and favours a rapid cessation of the sinking of brines around 18 000 yr ago, when the Antarctic ice sheet extent was at its maximum. Sea ice formation was then shifted to the open ocean where the salty water is quickly mixed with fresher water, which prevents deep sinking of salty water and therefore breaks down the deep stratification and releases carbon from the abyss. Based on this scenario it is possible to simulate both the amplitude and timing of the CO2 increase during the last termination in agreement with data. The atmospheric δ13C appears to be highly sensitive to changes in the terrestrial biosphere, underlining the need to better constrain the vegetation evolution during the termination.

Study on surface wave-induced mixing of transport flux residue under typhoon conditions

2019 ◽  
Vol 37 (6) ◽  
pp. 1837-1845 ◽  
Author(s):  
Yongzeng Yang ◽  
Yongfang Shi ◽  
Chencheng Yu ◽  
Yong Teng ◽  
Meng Sun
Keyword(s):  
Surface Wave ◽  
Wave Induced ◽  
Transport Flux

Numerical Experiments Analysis of Wave-Induced Vertical Mixing’s Effects on Sea Surface Wind-Induced Momentum Transfer

2010 ◽  
Author(s):  
Bingchen Liang ◽  
Ying Liu ◽  
Lili Yang
Keyword(s):  
Fresh Water ◽  
Yellow River ◽  
Vertical Section ◽  
Vertical Mixing ◽  
Three Dimensional ◽  
Velocity Profiles ◽  
Dimensional Model ◽  
One Dimensional ◽  
Wave Induced ◽  
Sediment Model

A hydrodynamic sediment coupled model COHERENS-SED, which has been developed by the present authors through introducing wave-enhanced bottom stress, wave dependent surface drag coefficient, wave-induced surface mixing, SWAN, damping function of sediment on turbulence and sediment model to COHERENS, is modified to account for wave-induced vertical mixing. One equation k–ε turbulence model is taken into account in calculating vertical viscosity coefficient. COHERENS-SED consists of sediment model SED, current model COHERENS and wave generation model SWAN. The model can also calculate one-dimensional, two-dimensional and three-dimensional current separately. One-dimensional model and three-dimensional model are adoptted to study the wave-induced vertical mixing’s effects. The horizontal current velocity profiles given by the model, with same input conditions as what to get analytical results, are in nice agreement with analytical velocity profiles. Therefore the model can be reliable to identify wave-induced vertical mixing’s effects on horizontal velocity profiles and momentum transferring. Two group numerical experiments are built based on 130m water depth and 20m water depth for the one-dimensional model. Results show that higher wave height can generate larger vertical eddy viscosity and lower horizontal velocity generally. In order to find out such effects on fresh water flume momentum transfer towards down in vertical section of estuary, Yellow River delta is chosen to study the effects of wave-induced vertical diffusion on sediment vertical mixing and the Yellow River estuary vertical cross-section is chosen to study fresh water disperse range in vertical section. The results of fresh water shows that wave-induced vertical mixing increases the momentum of fresh water transferring ability towards down to seabed. So fresh water flume length is compressed obviously.

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