海洋涡旋自动探测几何方法、涡旋数据库及其应用
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摘要
近10a来,海洋涡旋的自动探测和分析研究成为物理海洋学研究的前沿热点之一。本研究介绍了作者及其合作者最近几年发展的一系列基于海表面高度异常(Sea Surface Height Anomaly,SSHA)、海表温度(Sea Surface Temperature,SST)的欧拉型以及基于全球漂流浮标数据的拉格朗日型的涡旋自动探测几何方法、从欧拉型涡旋探测方法中发展出来的三维涡旋的自动探测方法和利用上述方法探测得到的结果建立的涡旋数据库。此外,本研究还介绍了涡旋数据库的应用,主要包括:分析黑潮延续体以及南加州湾的涡旋统计特征;以黑潮延伸区冷、暖两个中尺度涡旋为例,采用动态合成、带通滤波等方法,研究中纬度地区中尺度海洋涡旋对大气的强迫特征;在黑潮延续体采用合成分析方法得到了合成气旋和反气旋的三维结构并对涡旋调制下混合层深度进行探究;对涡旋诱导的输运、涡旋诱导的叶绿素变化进行的研究以及对阿拉伯海大涡进行的研究等。
Last decade has witnessed quick development in the oceanic eddy detection and analysis,which has become one of the hot topics in the oceanography community.This paper presents a series of Eular automated eddy detection methods based on SSHA(sea surface height anomaly)and SST(sea surface temperature),and a series of Lagrangian automated eddy detection methods based on global drifter data.The three-dimensional automated eddy detection method is based on the Eular methods.The methods are developed by the authors and their collaborators during the recent years and they build an eddy datasets based on the results from the automated eddy detection methods mentioned above.The application of the datasets are also discussed:the study of eddy statistical analysis in the Kuroshio extension area and South California Bay;the study of atmospheric responses to oceanic eddies in mid-latitude by dynamic synthesis and band-pass filtering in the case of two warm and cold mesoscale eddies in the Kuroshio extension area;the study of eddy-modulated surface mixed layer by analyzing the three-dimensional structure of synthetic cyclonic eddy and anticyclonic eddy in the Kuroshio extension area which are given by synthetic analysis method;the studies of eddy-induced transports,effects of eddies on chlorophyll concentrations and the large eddy in the Arabian Sea.
Last decade has witnessed quick development in the oceanic eddy detection and analysis,which has become one of the hot topics in the oceanography community.This paper presents a series of Eular automated eddy detection methods based on SSHA(sea surface height anomaly)and SST(sea surface temperature),and a series of Lagrangian automated eddy detection methods based on global drifter data.The three-dimensional automated eddy detection method is based on the Eular methods.The methods are developed by the authors and their collaborators during the recent years and they build an eddy datasets based on the results from the automated eddy detection methods mentioned above.The application of the datasets are also discussed:the study of eddy statistical analysis in the Kuroshio extension area and South California Bay;the study of atmospheric responses to oceanic eddies in mid-latitude by dynamic synthesis and band-pass filtering in the case of two warm and cold mesoscale eddies in the Kuroshio extension area;the study of eddy-modulated surface mixed layer by analyzing the three-dimensional structure of synthetic cyclonic eddy and anticyclonic eddy in the Kuroshio extension area which are given by synthetic analysis method;the studies of eddy-induced transports,effects of eddies on chlorophyll concentrations and the large eddy in the Arabian Sea.
引文
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(2)DONG C M,XU G J,LIU Y,et al.Chlorophyll rings around oceanic eddies,审稿中.
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[3]DONG C M,LIU Y,LUMPKIN R,et al.A scheme to identify explicit loops from trajectories of ocean surface drifters[J].Journal of Atmospheric and Oceanic Technology,2011,28(9):1167-1176.
[4]DONG C,MCWILLIAMS J C,HALL A,et al.Numerical simulation of a synoptic event in the Southern California Bight[J].Journal of Geophysical Research:Oceans,2011,116(C5):C05018.
[5]VENEZIANI M,GRIFFA A,GARRAFFO Z D,et al.Lagrangian spin parameter and coherent structures from trajectories released in a high-resolution ocean model[J].Journal of Marine Research,2005,63(4):753-788.
[6]GRIFFA A,LUMPKIN R,VENEZIANI M.Cyclonic and anticyclonic motion in the upper ocean[J].Geophysical Research Letters,2008,35(1):L01608,doi:10.1029/2007GL032100.
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[8]BERON-VERA F J,OLASCOAGA M J,GONI G J.Oceanic mesoscale eddies as revealed by Lagrangian coherent structures[J].Geophysical Research Letters,2008,35(12):L12603,doi:10.1029/2008GL033957.
[9]LILLY J M,GASCARD J-C.Wavelet ridge diagnosis of time-varying elliptical application to an oceanic eddy[J].Nonlinear Processes in Geophysics,2006,13(5):467-483.
[10]ASHKEZARI M D,HILL C N,FOLLETT C N,et al.Oceanic eddy detection and lifetime forecast using machine learning methods[J].Geophysical Research Letters,2016,43(23):12234-12241.
[11]NENCIOLI F,DONG C,DICKEY T,et al.A vector geometry based eddy detection algorithm and its application to high-resolution numerical model products and High-Frequency radar surface velocities in the Southern California Bight[J].Journal of Atmospheric&Oceanic Technology,2010,27:564-579,doi:10.11.1175/2009JTECHO725.1.
[12]OKUBO A.Horizontal dispersion of floatable particles in the vicinity of velocity singularities such as convergences[J].Deep Sea Research and Oceanographic Abstracts,1970,17(3):445-454,doi:10.1016/0011-7471(70)90059-8.
[13]WEISS.The dynamics of enstrophy transfer in two-dimensional hydrodynamics[J].Nonlinear Phenomena,1991,48(2-3):273-294,doi:10.1016/0167-2789(91)90088-q.
[14]ISERN-FONTANET J,GARCIA-LADONA E,FONT J,et al.Identification of marine eddies from altimetric maps[J].Journal of Atmospheric&Oceanic Technology,2003,20(5):772-778.
[15]PENVEN P,ECHEVIN V,PASAPERA J,et al.Average circulation,seasonal cycle,and mesoscale dynamics of the Peru Current System:A modeling approach[J].Journal of Geophysical Research,2005,110(C10):C10021,doi:10.1029/2005JC002945.
[16]HENSON S,THOMAS A.A census of anticyclonic eddies in the Gulf of Alaska[J].Deep Sea Research Part I:Oceanographic Research Papers,2008,55(2):163-176.
[17]CHELTON D B,SCHLAX M G,SAMELSON R M.Summertime coupling between sea surface temperature and wind stress in the California Current System[J].Journal of Physical Oceanography,2007,37(3):495-517.
[18]CHELTON D B,GAUBE P,SCHLAX M G,et al.The influence of nonlinear mesoscale eddies on near-surface oceanic chlorophyll[J].Science,2011,334(6054):328-332.
[19]ARI SADARJOEN I,POST F H.Detection,quantification,and tracking of vortices using streamline geometry[J].Computers&Graphics,2000,24(3):333-341.
[20]CHAIGNEAU A,GIZOLME A,GRADOS C.Mesoscale eddies off Peru in altimeter records:Identification algorithms and eddy spatiotemporal patterns[J].Progress in Oceanography,2008,79(2-4):106-119,doi:10.1016/j.pocean.2008.10.013.
[21]BASDEVANT C,PHILIPOVITCH.On the validity of the“Weiss criterion”in two-dimensional turbulence[J].Physica Section D:Nolinear Phenomena,1994,73(1-2):17-30,doi:10.1016/0167-2789(94)90222-4.
[22]DOGLIOLI A M,BLANKE B,SPEICH S,et al.Tracking coherent structures in a regional ocean model with wavelet analysis:Application to Cape Basin eddies[J].Journal of Geophysical Research:Oceans,2007,112:C05043.
[23]HENSON S,THOMAS A.A census of anticyclonic eddies in the Gulf of Alaska[J].Deep Sea Research Part I:Oceanographic Research Papers,2008,55(2):163-176.
[24]CHELTON D B,SCHLAX M G,SAMELSON R M.Global observations of nonlinear mesoscale eddies[J].Progress in Oceanography,2011,91(2):167-216.
[25]ZHANG C H,LI H L,LIU S T,et al.Automatic detection of oceanic eddies in reanalyzed SST images and its application in the East China Sea[J].Science China Earth Sciences,2015,58(12):2249-2259.
[26]MATSUOKA D,ARAKI F,INOUE Y,et al.A new approach to ocean eddy detection,tracking,and event visualization-application to the Northwest Pacific Ocean[J].Procedia Computer Science,2016,80:1601-1611.
[27]OLSON D.Rings in the ocean[J].Earth and Planetary Sciences,1991,19(19):283-311.
[28]DONG C M,NENCIOLI F,LIU Y,et al.An automated approach to detect oceanic eddies from satellite remotely sensed sea surface temperature data[J].Geoscience and Remote Sensing Letters,IEEE,2011,8:1055-1059.
[29]LUMPKIN R,PAZOS M.Measuring surface currents with Surface Velocity Program drifters:the instrument,its data,and some recent results[M]∥Lagrangian Analysis and Prediction of Coastal and Ocean Dynamics,Cambridge,Eng:Cambridge University Press,2007:39-67.
[30]DONG C M,LIN X Y,LIU Y,et al.Three-dimensional oceanic eddy analysis in the Southern California Bight from a numerical product[J].Journal of Geophysical Research,2012,117(C7):92-99.
[31]LIN X Y,DONG C M,CHEN D K,et al.Three-dimensional properties of mesoscale eddies in the South China Sea based on eddy-resolving model output[J].Deep Sea Research Part I:Oceanographic Research Papes,2015,99:46-64.
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