THE COUPLED MODE BETWEEN THE KUROSHIO REGION MARINE HEATING ANOMALY AND THE NORTH PACIFIC ATMOSPHERICCIRCULATION IN WINTERTIME

ZHANG Yong-chui; ZHANG Li-feng; LUO Yu

Abstract:

Using monthly reanalysis data of the National Center for Environmental Research/National Center for Atmospheric Research (NCEP/NCAR) and Objectively Analyzed Air–CSea Heat Flux (OAFlux) gathered during the winter, singular vector decomposition (SVD) analysis was conducted to reveal the coupled mode between the Kuroshio marine heating anomaly and the geopotential height at 500 hPa (Z500) over the North Pacific. The first SVD mode showed that when the northern Kuroshio marine heating anomaly was positive, the Z500 in the central and western sections of the North Pacific was anomalously low. By composing the meteorological field anomalies in the positive (or negative) years, it has been revealed that while the Aleutian Low deepens (or shallows), the northwesterly wind overlying the Kuroshio strengthens (or weakens) and induces the near-surface air to be cool (or warm). Furthermore, this increases (or decreases) the upward heat flux anomaly and cools (or warms) the sea surface temperature (SST) accordingly. In the vicinity of Kuroshio and its downstream region, the vertical structure of the air temperature along the latitude is baroclinic; however, the geopotential height is equivalently barotropic, which presents a cool trough (or warm ridge) spatial structure. The divergent wind and vertical velocities are introduced to show the anomalous zonal circulation cell. These are characterized by the rising (or descending) air in the central North Pacific, which flows westward and eastward toward the upper troposphere, descends (or rises) in the Kuroshio and in the western section of North America, and then strengthens (or weakens) the mid-latitude zonal cell (MZC).

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ZHANG Yong-chui, ZHANG Li-feng, LUO Yu. THE COUPLED MODE BETWEEN THE KUROSHIO REGION MARINE HEATING ANOMALY AND THE NORTH PACIFIC ATMOSPHERICCIRCULATION IN WINTERTIME [J]. Journal of Tropical Meteorology, 2010, 16(1): 51-58.

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THE COUPLED MODE BETWEEN THE KUROSHIO REGION MARINE HEATING ANOMALY AND THE NORTH PACIFIC ATMOSPHERICCIRCULATION IN WINTERTIME

Institute of Meteorology, University of Science and Technology, PLA

Abstract: Using monthly reanalysis data of the National Center for Environmental Research/National Center for Atmospheric Research (NCEP/NCAR) and Objectively Analyzed Air–CSea Heat Flux (OAFlux) gathered during the winter, singular vector decomposition (SVD) analysis was conducted to reveal the coupled mode between the Kuroshio marine heating anomaly and the geopotential height at 500 hPa (Z500) over the North Pacific. The first SVD mode showed that when the northern Kuroshio marine heating anomaly was positive, the Z500 in the central and western sections of the North Pacific was anomalously low. By composing the meteorological field anomalies in the positive (or negative) years, it has been revealed that while the Aleutian Low deepens (or shallows), the northwesterly wind overlying the Kuroshio strengthens (or weakens) and induces the near-surface air to be cool (or warm). Furthermore, this increases (or decreases) the upward heat flux anomaly and cools (or warms) the sea surface temperature (SST) accordingly. In the vicinity of Kuroshio and its downstream region, the vertical structure of the air temperature along the latitude is baroclinic; however, the geopotential height is equivalently barotropic, which presents a cool trough (or warm ridge) spatial structure. The divergent wind and vertical velocities are introduced to show the anomalous zonal circulation cell. These are characterized by the rising (or descending) air in the central North Pacific, which flows westward and eastward toward the upper troposphere, descends (or rises) in the Kuroshio and in the western section of North America, and then strengthens (or weakens) the mid-latitude zonal cell (MZC).

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[1]	ZHAO Yong-ping, MCBEAN G A. Air-sea interactionbetween the Kuroshio region marine heating anomaly andNorthern Hemisphere atmospheric circulation [J]. Oceanol.Limnol. Sinica, 1995, 26(4): 383-388.
[2]	ZHAO Yong-ping, ZHANG Bi-cheng, JING Li-cai. Theinfluence of the sea-air heat exchange over the Kuroshio in theEast China Sea in winter on the precipitation in the middleand lower reaches of Changjiang River in flood season [J].Oceanol. Limnol. Sinica, 1983, 14(3): 256-262.
[3]	ZHAO Yong-ping. A preliminary study on the influence ofsea-air heat exchange in the mid-latitude of the North Pacificon the atmospheric circulation there [J]. Oceanol. Limnol.Sinica, 1986, 17(1): 57-65.
[4]	ZHAO Yong-ping, MCBEAN G A. Influence of theKuroshio region marine heating anomaly on the northhemisphere atmospheric circulation in the following seasons[J]. Oceanol. Limnol. Sinica, 1996, 27(3): 246-250.
[5]	WENG Xue-chuan, ZHANG Qi-long, YANG Yu-ling, et al.The Kuroshio heat transport in the East China Sea and itsrelation to the precipitation in the rainy season in theHuanghuai Plain area [J]. Oceanol. Limnol. Sinica, 1996,27(3): 237-245.
[6]	YU Zhen-shou, SUN Zhao-bo, ZENG Gang. The effects ofPacific SSTA on summer precipitation over Eastern ChinaI ―Observational analysis [J]. J. Trop. Meteor., 2005, 21(2):467-477.
[7]	YU Zhen-shou, SUN Zhao-bo, ZENG Gang. The effects ofPacific SSTA on summer precipitation over Eastern ChinaII ―Numerical Simulations [J]. J. Trop. Meteor., 2005, 21(2):478-487.
[8]	ZHANG Tian-yu, SUN Zhao-bo, LI Zhong-xian, et al.Relation between spring Kuroshio SSTA and summer rainfallin China [J]. J. Trop. Meteor., 2007, 23(2): 189-195.
[9]	LIU Qin-yu, WEN Na, YU Yong-qiang. The role of theKuroshio in the winter North Pacific-atmosphere interaction:Comparison of a coupled model and observations [J]. Adv.Atmos. Sci., 2006, 23(2): 181-189.
[10]	YU L, JIN X, WELLER R A. Multidecade Global FluxDatasets from the Objectively Analyzed Air-sea Fluxes(OAFlux) Project: Latent and Sensible Heat Fluxes, OceanEvaporation, and Related Surface Meteorological Variables.[R]. Woods Hole: Woods Hole Oceanographic Institution,OAFlux Project Technical Report. 2008.
[11]	KISTLER R, KALNAY E, COLLINS W, et al. TheNCEP-NCAR 50-Year reanalysis: Monthly means CD-ROMand documentation [J]. Bull. Amer. Meteor. Soc., 2001, 82(2):247-267.
[12]	SMITH T M, REYNOLDS R W, PETERSON T C, et al.Improvements to NOAA’s Historical merged land-oceansurface temperature analysis (1880-2006) [J]. J. Climate, 2008,21(10): 2283-2296.
[13]	WEI Feng-ying. Modern Climatological StatisticalDiagnose and Prediction Technique (Version 2) [M]. Beijing:China Meteorological Press. 2007: 160-169.
[14]	DING Yu-guo, JIANG Zhi-hong. Generality of SingularValue Decomposition in diagnostic analysis of meteorologicalfield [J]. Acta Meteorol. Sinica, 1996, 54(3): 365-372.
[15]	ZHU Wei-jun, SUN Zhao-bo, PENG Jia-yi. Effects ofwinter Pacific SSTA on the storm track and jet stream [J]. J.Nanjing Inst. Meteor., 1999, 22(4): 575-581.
[16]	CZAJA A, FRANKIGNOUL C. Observed Impact ofAtlantic SST Anomalies on the North Atlantic Oscillation [J]. J.Climate, 2002, 15(6): 606-623.
[17]	DESER C, BLACKMON M L. On the relationshipbetween tropical and north Pacific sea surface temperaturevariations [J]. J. Climate, 1995, 8(6): 1677-1680.
[18]	ZHANG Y, WALLACE J M, IWASAKA N. Is climatevariability over the North Pacific a linear response to ENSO?[J]. J. Climate, 1996, 9(7): 1468-1478.
[19]	ALEXANDER M, ILEANA B A, MATTHEW N, et al.The atmospheric bridge: The influence of ENSOteleconnections on air-sea interaction over the global oceans[J]. J. Climate, 2002, 15(16): 2205-2231.
[20]	AN S I, WANG B. The forced and intrinsic low-frequencymodes in the North Pacific [J]. J. Climate, 2005, 18(6):876-885.
[21]	FRANKIGNOUL C, HASSELMANN K. Stochasticclimate models. Part II: Application to sea-surface temperaturevariability and thermocline variability [J]. Tellus, 1977, 29(4):289-305.
[22]	LIU Z, WU L. Atmospheric Response to North PacificSST: The Role of Ocean-Atmosphere Coupling [J]. J. Climate,2004, 17(9): 1859-1882.
[23]	FRANKIGNOUL C, CZAJA A, B L’Hévéder. Air�Cseafeedback in the North Atlantic and surface boundaryconditions for ocean models [J]. J. Climate, 1998, 11(9):2310�C2324.
[24]	PARK S, DESER C, ALEXANDER M A. Estimation ofthe Surface Heat Flux Response to Sea Surface TemperatureAnomalies over the Global Oceans [J]. J. Climate, 2005,18(21): 4582-4599.
[25]	YU Wei-dong, CHAO Ji-ping. The analysis of air-seainteraction in the tropical Pacific during ENSO―Theinterannual variance of the atmospheric circulation’sirroratioanl and non-divergent parts [J]. Progress Nat. Sci.,2004, 4(8): 917-924.
[26]	WANG C. Atmospheric Circulation Cells Associated withthe El Ni?o�CSouthern Oscillation [J]. J. Climate, 2002, 15(4):399-419.

THE COUPLED MODE BETWEEN THE KUROSHIO REGION MARINE HEATING ANOMALY AND THE NORTH PACIFIC ATMOSPHERICCIRCULATION IN WINTERTIME

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