The impact of Pacific summer water on sea ice of the Canada Basin
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摘要: 近年来,北极海冰发生了大面积减少,减少的原因仍存在着争议。基于2003-2011年的水文和遥感卫星数据,对北冰洋加拿大海盆的太平洋水和海冰进行研究。通过对比2006年和2007年太平洋水位温与海冰密集度的空间分布,发现太平洋水暖异常于2007年1-3月进入加拿大海盆的中部,并可能导致了2007年夏季海冰大面积的融化。2003-2011年,在加拿大海盆的中部,太平洋水位温与海冰密集度存在着时间上的负相关。选取2007年8月,发现两者在空间上也存在着负相关。这很可能说明太平洋水暖异常在流动的过程中,向上输送了热量,在一定程度上,融化了海冰,从而触发海冰-反照率正反馈,导致海冰的减少。因此,通过白令海峡进入北冰洋的太平洋夏季水,对北极海冰面积的减少有着重要影响。Abstract: In recent years,the area of sea ice have been substantially reduced in the Arctic Ocean. The reason behind this is still in debate. Based on the data of hydrology and remote sensing satellite from 2003 to 2011,the relationship of Pacific Water and sea ice in the Canada Basin were studied. Spatial distributions of potential temperature of Pacific Water and sea ice concentration in 2006 were compared with those in 2007. It was found that the warm Pacific Water anomalies entered the central Canada Basin in January to March 2007,which probably led to the melting of sea ice in the summer of 2007. Between 2003 and 2011,it was found that the potential temperature of Pacific Water and sea ice concentration were negatively correlated in the central Canada Basin. In August 2007,the spatial correlation was also found to be negative in the central Canada Basin. It might indicate that the inflow of warm Pacific Water anomalies transferred the heat upwardly. To a certain extent, the heat melted the sea ice and triggered the ice-albedo feedback,which resulted in the decline of sea ice area. Therefore,Pacific Summer Water,which travels through the Bering Strait into the Arctic Ocean,plays an important role in the reduction of sea ice area in the Arctic Ocean.
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Key words:
- Canada Basin /
- sea ice /
- Pacific summer water
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Comiso J C,Parkinson C L,Gersten R,et al. Accelerated decline in the Arctic sea ice cover[J]. Geophysical Research Letters,2008,35:L01703. 刘成龙,赵进平. 夏季北极密集冰区范围确定及其时空变化研究[J].海洋学报,2013,35(4):36-46. Arctic Climate Impact Assessment. Impacts of a Warming Arctic[M]. New York:Cambridge University Press,2004:139. Stroeve J,Holland M M,Meier W,et al. Arctic sea ice decline:Faster than forecast[J]. Geophysical Research Letters,2007,34:L09501. Perovich D K,Richter-Menge J A,Jones K F,et al. Sunlight,water,and ice:Extreme Arctic sea ice melt during the summer of 2007[J]. Geophysical Research Letters,2008,35:L11501. 钟文理,赵进平. 北极加拿大海盆2003年和2008年上层海洋热含量的差异分析[J].极地研究,2012,24(1):24-34. Zhang J,Lindsay R,Steele M,et al. What drove the dramatic retreat of arctic sea ice during summer 2007?[J]. Geophysical Research Letters,2008,35:L11505. Woodgate R A,Weingartner T,Lindsay R. The 2007 Bering Strait oceanic heat flux and anomalous Arctic sea-ice retreat[J]. Geophysical Research Letters,2010,37:L01602. McLaughlin F,Carmack E,Proshutinsky A,et al. The rapid response of the Canada Basin to climate forcing:From bellwether to alarm bells[J]. Oceanography,2011,24(3):146-159. Polyakov I V,Timokhov L A,Alexeev V A,et al. Arctic Ocean warming contributes to reduced polar ice cap[J]. Journal of Physical Oceanography,2010,40:2743-2756. Steele M,Zhang J,Ermold W. Mechanisms of summertime upper Arctic Ocean warming and the effect on sea ice melt[J]. Journal of Geophysical Research,2010,115:C11004. 李涛. 北极快速变化条件下海冰吸收太阳辐射能的光学研究[D]. 青岛:中国海洋大学,2011. Jackson J M,Carmack E C,McLaughlin F A,et al. Identification,characterization,and change of the near-surface temperature maximum in the Canada Basin,1993-2008[J]. Journal of Geophysical Research,2010,115:C05021. 曹勇,赵进平. 2008年加拿大海盆次表层暖水的精细结构的研究[J]. 海洋学报,2011,33(2):11-19. Bourgain P,Gascard J C,Shi J,et al. Large-scale temperature and salinity changes in the upper Canadian Basin of the Arctic Ocean at a time of a drastic Arctic Oscillation inversion[J]. Ocean Science,2013,9:447-460. Jackson J M,Williams W J,Carmack E C. Winter sea-ice melt in the Canada Basin,Arctic Ocean[J]. Geophysical Research Letters,2012,39:L03603. McLaughlin F A,Carmack E,Macdonald R W,et al. The joint roles of Pacific and Atlantic-origin waters in the Canada Basin,1997-1998[J]. Deep-Sea Research,2004,51:10??栱甲欸挮格楢?匾敛愱?獝栠敂汯晵?楧湡?獮甠浐洬敇牡?晣慡汲汤???ぃ???と??孁?嵬???潩湣琠楡湮敤渠瑳慵汭?卥桲攠汐晡?剩敦獩散愠牷捡桴??びㄠ???????????戠物?嬠??嵥??潲牣楴獩潣渠???卡瑮攠敦汲敯????渹搷攠牴獯攠渲‰到???祝搮爠潇来牯慰灨桹祳?潣晡?琠桒敥?略灡灲散牨??牥捴瑴楥捲?伬挲攰愱渲?洳改愺獌田爵收搰″昮爼潢浲 ̄瑛栱改?渠畓捨汩敭慡牤?猠畋戬浃慡牲業湡散?唠?匬?卡??偫慥特条潭孡?嵋???攠敡灬?匠敖慡?剩敥獴敩慥牳挠桯?ㄠ???????ㄠ??????扡牴?孲?㈠嵭?卸捩桭汵業琠穷敡牴?割?传捩敮愠湴??愠瑗慥?噴楥敲睮嬠婃嵡??つ???栠瑂瑡灳???潯摦瘠?慨睥椠?摲散??扣爠?季??嵮?告牝漮甠灇楥湯????慩牣瑡桬???即楥牡橲慣捨漠扌獥???敲瑳?愲氰???攲游攺爳愴琴椱漭渳?漴昴?愼湢慲氾祛猲椰獝?慓湨摩?捡潤湡猠楋猬瑋敡湭瑯?敨物牤潡爠?昬楉整汯摨猠?甬獥楴渠条?琮栠敐??慩瑦慩??湏瑣敥牡灮漠汩慮瑦楬湯杷?噉慮牦楬慵瑥楮潣湥愠汯??湣慡汴祡獳楴獲????噣??孥?嵵??佩捯敮愠湯??潳摥敡氠汩楣湥朠??ぶ??????????ぁ??ぴ???扏牣?孡??嵊?伮朠楇???剨楹杳潩牣??????捥偡桲散敨?????敥瑲?愬氲?‰匶甬洳洳攺牌‰爸收琰爵攮愼瑢?漾晛′?牝挠瑗楯捯?獧敡慴?椠捒攠?刬潗汥敩?潧晡?獴畮浥浲攠牔?睌楩湮摤獳孡?崠???敏潢灳桥祲獶楥捤愠汩?剣敲獥敡慳牥捳栠??攠瑂瑥敲物獮?㈠こぴ?????????の???扦牬?學??崠?婲桯慭渠杴???坐潡潣摩杦慩瑣攠?副??潨牥椠瑁穲?剴??匠敦慲?業挠攲‰爰攱猠灴潯渠猲攰?琱漠?慮瑤洠潴獨灥桩敲爠楩捭?慡湣摴?漠捯敮愠湴楨捥?晁潲牣捴楩湣朠?楣湥?瑮栠敷??敥牲椠湣杯?卵敭慮孛?嵝???潥畯牰湨慹汳?潣晡?倠桒祥獳楥捡慲汣?传捌敥慴湴潥杲牳愬瀲栰礱?水?????????金????????戠狲?宰??巛?伮朠椗???埃慂气汶懛捕敛??????哑桦旛?爬漲氰攰″漬昱?猨申洩洺攳爵?猭申爵昷愮挼敢?眾楛渲搳?愠湂潯浵慲汧楡敩獮?楐測?瑡桳散?獲畤洠浊攠牃??牔捨瑥椠捁?獣整慩?椠捏散?敡确琠敨湡瑬?楣湬??づㄠち?慤渠摩?????孴?嵲???敵潡灬栠祶獡楲捩慡汢?剬敩獴敹愠牦捲桯??攱琹琹攷爠獴?㈠??日????????づ???扥牡?孒??嵥?婲档慨測朲‰???椵游携猷愴礵?刷?匶挮格睢敲椾杛攲爴????呥桥敬?椠浍瀬慍捯瑲?潳景?愠湊?楅湲瑭敯湬獤攠?猬略浴洠敡牬?挠祃捩汲潣湵敬?潴湩???????牵捭瑭楥捲?獐敡慣?楦捩散?牨敡瑬牯散慬瑩孮?崠???敥潲瀠桩祮猠楴捨慥氠?割散獴敩慣爠捏档??敮瑛瑊敝爮猠??ふ???????㈠ぇ?????sical Research,2004,109:C02027. 史久新,赵进平,矫玉田,等. 太平洋入流及其与北冰洋异常变化的联系[J]. 极地研究,2004,16(3):253-260. Woodgate R A,Aagaard K,Weingartner T. Interannual changes in the Bering Strait fluxes of volume,heat and freshwater between 1991 and 2004[J]. Geophysical Research Letters,2006,33:L15609. Itoh M,Shimada K,Kamoshida T,et al. Interannual variability of Pacific winter water inflow through Barrow Canyon from 2000 to 2006[J]. Journal of Oceanography,2012,68:575-592. Woodgate R A,Aagaard K,Weingartner T J. A year in the physical oceanography of the Chukchi Sea:Moored measurements from autumn 1990-1991[J]. Deep-Sea Research,2005,52(24/26):3116-3149. Weingartner T,Aagaard K,Woodgate R,et al. Circulation on the north Chukchi sea shelf[J]. Deep-Sea Research,2005,52(24/26):3150-3174. Weingartner T,Dobbins E,Danielson S,et al. Hydrographic variability of the northeastern
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