南极普里兹湾海冰季节性变化的高分辨率数值模拟

李群; 吴辉碇; 张璐

南极普里兹湾海冰季节性变化的高分辨率数值模拟

1.
中国极地研究中心, 上海 200136
2.
中国极地研究中心, 上海 200136;国家海洋环境预报中心, 北京 100081
3.
中国极地研究中心, 上海 200136;国家海洋局第二海洋研究所, 浙江杭州 310012

基金项目: 国家自然科学青年基金项目(40906099);中国极地战略研究基金资助(20080223);中国极地研究中心极地科学青年创新基金。

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- 收稿日期: 2009-11-24

Fine-scale simulation of the seasonal variations of sea ice cover in the Prydz bay, Antarctic

1.
Polar Research Institute of China, Shanghai, 200136,China
2.
Polar Research Institute of China, Shanghai, 200136,China;National Marine Environment Forecast Center, Beijing 100081,China
3.
Polar Research Institute of China, Shanghai, 200136,China;The Second Institute of Oceanography, State Oceanic Administration, Hangzhou310012,China

摘要

摘要: 普里兹湾海冰以一年冰为主,海冰覆盖存在较大的季节性变化。海冰的分布及其季节性变化主要受当地大气环流及海流的影响。基于一个海洋-海冰耦和模式,模拟研究了该海区海冰的季节性变化特征。海洋模式基于MIT环流模式(MITgcm),海冰动力学模式参考Hibler类型的VP模型,热力学过程取自Winton三层模型。模式区域覆盖整个普里兹湾(75°~55°S ,50°~100°E),水平分辨率为(1/6)°×(1/12)°,垂向为50层。大气强迫场选用每6 h一次的NCEP再分析资料。模拟的海冰范围季节性变化与遥感资料拟合较好。每年的3~8月份,普里兹湾海冰快速生长,9~10月份达到最大值,随后海冰开始融化,2月份达到最小值。从9月份开始,受大陆沿岸局地风场的影响,在模拟区域范围内,形成了3个典型的沿岸冰间湖。和观测资料对比,模式较好地捕捉到了3个典型冰间湖的时间及空间分布。沿岸地形及海流对海冰厚度的分布具有重要影响,在西向沿岸流及西冰架地形的影响,在地形的上游形成海冰堆积,厚度最大超过3 m。同时,在下游方向,沿66°S形成一个厚冰带。
- 普里兹湾 /
- 海冰 /
- 冰-海耦合模式 /
- 冰间湖
Abstract: Prydz Bay is almost partially covered by sea ice all year. The distribution of sea ice and its annual variation are controlled mainly by the meteorological conditions and ocean currents. To model the seasonal variation of sea ice, a coupled ice-ocean model has been developed. The ocean model based on the MITgcm, and the ice model is based on the viscous-plastic rheology of Hibler and Winton three-layer reformulated thermodynamics. The model domain encompasses Prydz Bay (75°~55°S, 50°~100°E,) and with a grid resolution of (1/6)°×(1/12)° degree (latitude/longitude, average 6 km). Forcing fields are computed from 6-hourly NCEP reanalysis. The main features of the model simulations include an increasing ice cover from March to August, an approximately constant ice cover from August to November and a decreasing ice cover from November to February. In mid-September, polynyas start to develop at three coastal regions, temporal and spatial characteristics of the three polynyas are well reproduced and compare with available satellite data. Thick ice up to 3 m is piled up at the east end of the West Ice Shelf due to westward alongcoast current.
- Prydz Bay /
- sea ice /
- ice-ocean coupled model /
- polynyas

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参考文献(28)

IUDICONE D S, Speich G Madec, Blanke B. The global conveyor belt from a Southern Ocean perspective[J].Journal of Physical Oceanography, 2008,38(7):1401-1425.

JACOBS S S. Bottom water production and its links with the thermohaline Circulation[J]. Antarctic Science, 2004:16(4):427-437.

JOHNSON G C. Quantifying Antarctic bottom Water and North Atlantic deep water volumes[J]. J Geophys Res, 2008,113, C05027, doi: 10.1029/2007JC004477.

董兆乾,等. 南极普里兹湾海域夏季的水团和环流 //董兆乾.南极科学考察论文集(第二集) . 北京:海洋出版社, 1984: 1 -24.

苏玉芬. 普里兹湾及其邻近海域的环流结构和海水运动[M]// 周秀骥, 陆龙骅.南极与全球气候环境相互作用和影响的研究. 北京:气象出版社, 1996: 169-175.

LE K, SHI J, YU K,et al.Some thoughts on the spatiotemporal variations of water masses and circulations in the region of Prydz Bay, Antarctica[J]. Studia Marina Sinica, 1998:40: 43-54.

SMITH N R, DONG Z , KERRY K R, et al. Water masses and circulation in the region of Prydz Bay, Antarctica[J]. Deep-Sea Res: Part A, 1984, 31(9): 1121-1147.

PARK Y H, GAMBRONI L.Large-scale circulation and its variability in the south Indian Ocean from TOPEX/POSEIDON altimetry[J]. J Geophys Res, 1995:100(C12): 24911-24929.

ALLISON I, AKERMAN G. Sea ice and ocean energy balance studies at Mawson, Antarctic //Sea ice process and models. Coedition University of Washington Press, Seattle/IAHS Publ,1980,124: 347-359.

MITgcm Group. MITgcm Release lManual . Cambridge, MA 02139, USA, http://mitgcm.org/sealion/online_documents/manual.html. 2002.

MARSHALL J, ADCROFT A, CAMPIN J-M, et al. White. Atmosphere-ocean modeling exploiting fluid isomorphisms[J]. Mon Wea Rev, 2004,132(12): 2882-2994.

HIBLER W D III. Modeling a variable thickness sea ice cover[J]. Mon Wea Rev, 1980,108:1943-1973.

HIBLER W D III. A dynamic thermodynamic sea ice model[J]. J Phys Oceanogr, 1979, 9: 815-846.

WINTON M. A reformulated three-layer sea ice model[J]. J Atmos Ocean Technol, 2000, 17:525-531.

PARKINSON C L, Washington W M. A Large-Scale Numerical Model of Sea Ice[J]. J Geophys Res, 1979,84(C1): 311-337.

ZHANG J, ROTHROCK D A, STEELE M. Recent changes in Arctic sea ice: The interplay between ice dynamics and thermodynamics[J].J Climate, 2000,13: 3099-3114.

MAKSYM T,JEFFRIES M O. A one-dimensional percolation model of flooding and snow ice formation on Antarctic sea ice[J]. J Geophys Res, 2000,105(C11): 26313-26331.

MENEMENLIS D, CAMPIN J, HEIMBACH P, et al. ECCO2: High resolution global ocean and sea ice data synthesis[J].Mercator Ocean Quarterly Newsletter, 2008,31:13-21.

SMITH W H F,SANDWELL D T. Global seafloor topography from satellite altimetry and ship depth soundings[J]. Science, 1997,277:1957-1962.

SPREEN G, KALESCHKE L, HEYGSTER G. Sea ice remote sensing using AMSR-E 89-GHz channels[J]. J Geophys Res, 2008, 113, C02S03, doi: 10.1029/2005JC003384

WORBY A P, GEIGER C, PAGET M J, et al. Thickness distribution of Antarctic sea ice[J]. J Geophys Res, 2008,113, C05S92, doi: 10.1029/2007JC004254.

GUO Jing-xue, SUN Bo, Tian Gang. The application of electromagnetic-induction on the measurement of sea ice thickness in the Antarctic[J]. Applied Geophysics, 2007,4(3):214-220.

MASSOM R A, HARRIS P T, MICHAEL K J, et al. The distribution and formative processes of latent-heat polynyas in East Antarctica[J]. Ann Glaciol, 1998, 27: 420-426.

ARRIGO K R,van DIJKEN G L. Phytoplankton dynamics within 37 Antarctic coastal polynya systems[J]. J Geophys Res, 2003,108(C8): 3271, doi: 10.1029/2002JC001739.

TAMURA T, OHSHIMA K I,NIHASHI S. Mapping of sea ice production for Antarctic coastal polynyas[J]. Geophys Res Lett,2008,35, L07606, doi: 10.1029/2007GL032903.

MORALES Maqueda M A, WILLMOTT A J, BIGGS N R T. Polynya dynamics: a review of observations and modeling[J]. Review of Geophysics, 2002,42(1), doi: 10.1029/2002RG000116.

SMITH W O, Barber D G. Polynyas: Windows to the world[J]. Elsevier Oceanography Series, 2007,74:1-458.

SMEDSRUD L H, BUDGELL W P, JENKINS A D, et al. Fine scale sea ice modelling of the Storfjorden polynya[J]. Annals of Glaciology,2006, 44(1):73-79.

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