1979-2014年南极海冰运动特征分析
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摘要
在南极海冰缓慢增加的背景下,用美国冰雪数据中心的月平均海冰运动数据,分析了1979-2014年南极海冰的运动特征。结合月平均风速资料,探讨了风速对南极海冰运动变化的影响。结果表明:1979-2014年南极海冰运动速度总体上呈增加趋势,其中冬季平均运动速度最大,然后是秋季、春季,夏季最小。威德尔海和罗斯海作为南极海冰分布最多的2个子海区,海冰的平均运动速度均呈现加快趋势,冬季海冰平均运动速度增加趋势均比夏季强。南极海冰运动速度与风速在季节和年平均变化趋势上保持高度一致,存在较为显著的正相关关系,所以风速增大是导致南极海冰运动速度加快的一个重要原因。
In the context of a slow increase in Antarctic sea ice,based on monthly mean sea ice velocity data provided by National Snow and Ice Data Center,the characteristics of the Antarctic sea ice motion in 1979 to 2014 are analyzed. The effect of wind speed on Antarctic sea ice motion is discussed in combination with monthly mean wind speed data. The results show that the Antarctic sea ice velocity is generally increasing from 1979 to 2014,in which the average velocity in winter is the largest,followed by autumn,spring and summer. Sea ice velocity in Weddell Sea and Ross Sea is also accelerating and the average trend of sea ice velocity in winter is stronger than that in summer. The Antarctic sea ice velocity and wind speed are consistent with the seasonal and annual change trends and there is a significant positive correlation between them. Therefore,the strength of wind speed is an important influencing factor for the increase of sea ice velocity.
In the context of a slow increase in Antarctic sea ice,based on monthly mean sea ice velocity data provided by National Snow and Ice Data Center,the characteristics of the Antarctic sea ice motion in 1979 to 2014 are analyzed. The effect of wind speed on Antarctic sea ice motion is discussed in combination with monthly mean wind speed data. The results show that the Antarctic sea ice velocity is generally increasing from 1979 to 2014,in which the average velocity in winter is the largest,followed by autumn,spring and summer. Sea ice velocity in Weddell Sea and Ross Sea is also accelerating and the average trend of sea ice velocity in winter is stronger than that in summer. The Antarctic sea ice velocity and wind speed are consistent with the seasonal and annual change trends and there is a significant positive correlation between them. Therefore,the strength of wind speed is an important influencing factor for the increase of sea ice velocity.
引文
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[19]郭贤鹏.基于互相关算法的Weddell海海冰运动特性分析[J].声学技术,2016,35(6):127-130
[20] Venegas S A,Drinkwater M R. Seaice,atmosphere andupper ocean variability in the Weddell Sea,Antarctica[J]. Journal of Geophysical Research Atmospheres,2001,106(C8):16747-16765
[21]邬晓东.南极罗斯海海冰厚度和面积变化研究[D].青岛:中国海洋大学海洋环境学院,2012. 10-12
[22] Comiso J C,Kwok R,Martin S,et al. Variability andtrends in sea ice extent and ice production in the RossSea[J]. Journal of Geophysical Research,2011,116,C04021
[23] Cavalieri D J,Parkinson C L. Antarctic sea ice variabilityand trends,1979-2006[J]. Journal of Geophysical Re-search,2008,113(C7):C07004
[24] Comiso J C,Kwok R,Martin S,et al. Variability andtrends in sea ice extent and iceproduction in the Ross Sea[J]. Journal of Geophysical Research,2011,116(C4):C04021
[25] Holland P R,Kwok R. Wind-driven trends in Antarcticsea-ice drift[J]. Nature Geoscience,2012,5(12):872-875
[26] Zhang J. Modeling the impact of wind intensification onAntarctic sea ice volume[J]. Journal of Climate,2012,27(1):202-214
[2]马丽娟,陆龙骅,卞林根.南极海冰的时空变化特征[J].极地研究,2004,16(1):29-37
[3]柯长青,彭海涛,孙波,等. 2002-2011年北极海冰时空变化分析[J].遥感学报,2013,17(2):452-466
[4] Comiso J C,Fumihiko N. Trends in the sea ice coverusing enhanced and compatible AMSR-E,SSM/I,andSSMR data[J]. Journal of Geophysical Research,2007,113(113):228-236
[5] Bjorgo E,Johannessen O M,Miles M W. Analysis ofmerged SMMR-SMMI times series of Antarctic sea ice pa-rameters 1978-1995[J]. Geophysical Research Letters,2013,24(4):413-416
[6] Cavalieri D J,Gloersen P,Parkinson C L,et al. Ob-served hemispheric asymmetry in global sea ice changes[J]. Science,1997,278(5340):1104-1106
[7] Liu J,Curry J A,Martinson D G. Interpretation of recentAntarctic sea ice variability[J]. Geophysical ResearchLetters,2004,31(31):2205
[8]卞林根,林学椿.近30年南极海冰的变化特征[J].极地研究,2005,17(4):233-244
[9]王红霞.基于多源微波遥感的南极海冰探测研究[D].青岛:中国海洋大学信息科学与工程学院,2011. 2-20
[10]刘艳霞,王泽民,刘婷婷. 1979-2014年南北极海冰变化特征分析[J].遥感信息,2016,31(2):24-29
[11]樊婷婷.近30年来南极海冰增长的本质特征及其影响机制[D].青岛:中国海洋大学海洋环境学院,2015. 92-95
[12]沈校熠,柯长青,张杰. 2002-2011年南极海冰变化的遥感分析[J].极地研究,2017,29(1):163-171
[13]田忠翔.北极海冰运动变化特征分析[D].北京:国家海洋环境预报研究中心,2012. 2-20
[14]左正道,高郭平,程灵巧,等. 1979-2012年北极海冰运动学特征初步分析[J].海洋学报,2016,38(5):57-69
[15] Zhang J,Rothrock D A,Steele M. Recent changes inArctic sea ice:the interplay between ice dynamics andthermodynamics[J]. Journal of Climate,2000,13(17):3099-3114
[16] Light B,Grenfell T C,Perovich D K. Transmission andabsorption of solar radiation by Arctic sea ice during themelt season[J]. Journal of Geophysical Research Oceans,2008,113(C3):682-695
[17] Tschudi M,Fowler C,Maslanik J,et al. 2016. Polarpathfinder daily 25 km EASE-Grid sea ice motion vectors[EB/OL]. Version 3. Boulder,Colorado USA. NASANational Snow and Ice Data Center Distributed Active Ar-chive Center. doi:http://dx. doi. org/10. 5067/O57VAIT2AYYY
[18] Stroeve J,Meier W,2017. Sea ice trends and climatolo-gies from SMMR and SSM/I-SSMIS[EB/OL]. Version2. Boulder,Colorado USA. NASA National Snow and IceData Center Distributed Active Archive Center. doi:ht-tp://dx. doi. org/10. 5067/EYICLBOAAJOU
[19]郭贤鹏.基于互相关算法的Weddell海海冰运动特性分析[J].声学技术,2016,35(6):127-130
[20] Venegas S A,Drinkwater M R. Seaice,atmosphere andupper ocean variability in the Weddell Sea,Antarctica[J]. Journal of Geophysical Research Atmospheres,2001,106(C8):16747-16765
[21]邬晓东.南极罗斯海海冰厚度和面积变化研究[D].青岛:中国海洋大学海洋环境学院,2012. 10-12
[22] Comiso J C,Kwok R,Martin S,et al. Variability andtrends in sea ice extent and ice production in the RossSea[J]. Journal of Geophysical Research,2011,116,C04021
[23] Cavalieri D J,Parkinson C L. Antarctic sea ice variabilityand trends,1979-2006[J]. Journal of Geophysical Re-search,2008,113(C7):C07004
[24] Comiso J C,Kwok R,Martin S,et al. Variability andtrends in sea ice extent and iceproduction in the Ross Sea[J]. Journal of Geophysical Research,2011,116(C4):C04021
[25] Holland P R,Kwok R. Wind-driven trends in Antarcticsea-ice drift[J]. Nature Geoscience,2012,5(12):872-875
[26] Zhang J. Modeling the impact of wind intensification onAntarctic sea ice volume[J]. Journal of Climate,2012,27(1):202-214