Liu, G., He, Y., Shen, H. et al. Submesoscale activity over the shelf of the northern South China Sea in summer: simulation with an embedded model., Chin. J. Ocean. Limnol. 28, 1073–1079 (2010). https://doi.org/10.1007/s00343-010-0030-2
DOI:
Liu, G., He, Y., Shen, H. et al. Submesoscale activity over the shelf of the northern South China Sea in summer: simulation with an embedded model., Chin. J. Ocean. Limnol. 28, 1073–1079 (2010). https://doi.org/10.1007/s00343-010-0030-2DOI:
Submesoscale activity over the shelf of the northern South China Sea in summer: simulation with an embedded model
摘要
Abstract
We applied a primitive equation ocean model to simulate submesoscale activities and processes over the shelf of the northern South China Sea (NSCS) with a one-way nesting technology for downscaling. The temperature and density fields showed that submesoscale activities were ubiquitous in the NSCS shelf. The vertical velocity was considerably enhanced in submesoscale processes and could reach an average of 58 m per day in the subsurface. At this point
the mixed layer depth also was deepened along the front
and the surface kinetic energy also increased with the intense vertical movement induced by submesoscale activity. Thus
submesoscale stirring/mixing is important for tracers
such as temperature
salinity
nutrients
dissolved organic
and inorganic carbon. This result may have implication for climate and biogeochemical investigations.
关键词
Keywords
references
Allen J T, Smeeds D, Nurser J et al. 2001. Diagnosing vertical velocities using the QG omega equation: an examination of the errors due to sampling strategy. Deep-Sea Res., 48(2): 315–346.
Allen J T, Brown L, Sanders R et al. 2005. Diatom carbon export enhanced by silicate upwelling in the northeast Atlantic. Nature, 437: 728–32.
Barnier B L, Siefried L A, Marchesiello P. 1995. Thermal forcing for a glocal ocean circulation model using a three-year climatology of ECMWF analyses. J. Mar. Syst., 6(4): 363–380.
Blayo E, Debreu L. 1999. Adaptive mesh refinement for finite-difference ocean models: first experiments. J. Phys. Oceanogr., 29(6): 1 239–1 250.
Capet X, Mcwilliams J C, Mokemaker M J et al. 2008a. Mesoscale to submesoscale transition in the California current system. Part I: Flow structure, eddy flux, and observational tests. J. Phys. Oceanogr., 38(1): 29–43.
Capet X, Mcwilliams J C, Molemaker M J et al. 2008b. Mesoscale to submesoscale transition in the California current system. Part III: Energy balance and flux. J. Phys. Oceanogr., 38(10): 2 256–2 269.
Capet X, Mcwilliams J C, Molemaker M J et al. 2008c. Mesoscale to submesoscale transition in the California current system. Part II: Frontal processes. J. Phys. Oceanogr., 38(1): 44–64.
Chelton D B, Schlax M G, Samelson R M, et al. 2007. Global observations of large oceanic eddies. Geophys. Res. Lett., 34: L15606.
DaSilva A, Young C, Levitus S. 1994. Algorithms and Procedures. Vol. 1. Atlas of Surface Marine Data 1994, NOAA Atlas NESDIS. 6: 74.
Glover D M, Doney S C, Nelson N B, et al. 2008. Submesoscale anisotropy (fronts, eddies and filiments) as observed near Bermuda with ocean color data. Ocean Sci. Meet., Orlando.
Hoskins B J, Draghici I, Davies H C. 1978. A new look at the ω-equation. Q. F. R. Meteorol. Soc., 104(439): 31–38.
Klein P, Lapeyre G. 2009. The oceanic vertical pump induced by mesoscale and submesoscale turbulence. Annu. Rev. Mar. Sci., 1: 351–375.
Large W, McWilliams J, Doney S. 1994. Oceanic vertical mixing:A review and a model with a nonlocal boundary layer parameterization. Rev. Geophys., 32(4): 363–403.
Lévy M, Klein P, Treguier A M et al. 2009. Modification of gyre circulation by sub-mesoscale physics. Ocean Model., 34(1–2): 1–15.
Lee M A, Chang Y. 2008. SST Fronts in the South China Sea. In: Liu A K ed., Satellite Remote Sending of South China Sea. Tingmao Publish Comony. p. 187–198.
Lü X G, Qiao F L, Wang G S. 2008. Upwelling off the west coast of Hainan Island in summer: Its detection and mechanisms, Geophys. Res. Lett., 35(2): L02604.
Mahadevan, Tandon A. 2006. An analysis of mechanisms for submesoscale vertical motion at ocean fronts, Ocean Model, 14(3–4): 241–256.
Moorea M, Arango H G, Di Lorenzo E. 2004. A comprehensive ocean prediction and analysis system based on the tangent linear and adjoint of a regional ocean model. Ocean Model, 7(1–2): 227–258.
Pollard R T, Regier L A. 1990. Large variations in potential vorticity at small spatial scales in the upper ocean. Nature, 348: 227–29.
Shchepetkin A F, McWilliams J C. 2005. Regional Ocean Model System: a plicit-explicit ocean model with a free-surface and topography-following vertical coordinate. Ocean Model, 9(4): 347–404.
Shearman R K, Bath J A, Kosro P M. 1999. Diagnosis of the three-dimensional circulation associated with mesoscale motion in the california current, J. Phys. Oceanogr., 29(4): 651–670.
Song, H D. 1994. A semi-implicit ocean circullation model using a generalized topography following coordinate system. J. Comp. Phys. 115(1): 228–248.
Thomas L, Ferrari R. 2008. Friction, Frontogenesis, and the Stratification of the Surface Mixed Layer. J. Phys. Oceanogr., 38(11): 2 501–2 518.
Viudez A, Dritschel D G. 2004. Dynamic potential vorticity initialization and the diagnosis of mesoscale motion. J. Phys. Oceanogr., 34(12): 2 761–2 773.
WU R S, LI L. 2003. Summarization of study on upwelling system in the South China Sea. Journal of Oceanography in Taiwan Strait, 22(2): 269–277. (in Chinese with English abstract)
Yakhot V. 2008. Dissipation-scale fluctuations and mixing transition in turbulent flows. J. Fluid. Mech., 606: 325–337.
Zohar Y, Ho C M. 1996. Dissipation scale and control of fine-scale turbulence in a plane mixing layer. J. Fluid Mech., 320: 139–161.
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