Monthly Variability in Bering Strait Oceanic Volume and Heat Transports, Links to Atmospheric Circulation and Ocean Temperature, and Implications for Sea Ice Conditions
Monthly Variability in Bering Strait Oceanic Volume and Heat Transports, Links to Atmospheric Circulation and Ocean Temperature, and Implications for Sea Ice Conditions
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白令海峡海洋体积和热传输的每月变化、与大气环流和海洋温度的联系以及对海冰状况的影响
DOI：
10.1029/2019jc015422
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Woodgate, Rebecca A.
中科院分区：
文献类型：
--
作者：
Serreze, Mark C.;Barrett, Andrew P.;Crawford, Alex D.;Woodgate, Rebecca A.
白令海峡海洋热输送影响楚科奇海季节性海冰进退。自1990年以来，它取决于水温和控制体积运输的因素，假设是海峡的当地风和太平洋与北冰洋之间的海洋压差（“压头”）。最近的工作表明，在压头的变化，特别是在夏季，涉及到在东西伯利亚海的纬向风的强度，提高或降低海面高度在这方面通过埃克曼运输。我们证实，东西伯利亚海的向西与更广泛的北极中部高海平面气压模式有关，并注意到北冰洋中部的反气旋风也通过促进冰收敛和正向冰收敛而有利于整个北极地区9月海冰范围的降低。温度异常。体积输送和大气环流模式的逐月持续性较低，但1980-2017年期间，北冰洋中部的夏季（6月至8月）有明显的海平面压力升高趋势，有利于增加输送。最近的一些大型热传输与高水温，在楚科奇海的开放水域持续到冬季和早期的冰撤退在春天。2016年10月记录的最高热量传输是由于高水温和理想的风力条件产生了创纪录的高流量传输。2005年11月和12月是仅有的两个有向南流量（以及热量）输送的月份，这两个月都与海峡的南风有关。
The Bering Strait oceanic heat transport influences seasonal sea ice retreat and advance in the Chukchi Sea. Monitored since 1990, it depends on water temperature and factors controlling the volume transport, assumed to be local winds in the strait and an oceanic pressure difference between the Pacific and Arctic oceans (the “pressure head”). Recent work suggests that variability in the pressure head, especially during summer, relates to the strength of the zonal wind in the East Siberian Sea that raises or drops sea surface height in this area via Ekman transport. We confirm that westward winds in the East Siberian Sea relate to a broader central Arctic pattern of high sea level pressure and note that anticyclonic winds over the central Arctic Ocean also favor low September sea ice extent for the Arctic as a whole by promoting ice convergence and positive temperature anomalies. Month‐to‐month persistence in the volume transport and atmospheric circulation patterns is low, but the period 1980–2017 had a significant summertime (June–August) trend toward higher sea level pressure over the central Arctic Ocean, favoring increased transports. Some recent large heat transports are associated with high water temperatures, consistent with persistence of open water in the Chukchi Sea into winter and early ice retreat in spring. The highest heat transport recorded, October 2016, resulted from high water temperatures and ideal wind conditions yielding a record‐high volume transport. November and December 2005, the only months with southward volume (and thus heat) transports, were associated with southward winds in the strait.
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DOI：
--
发表时间：
1964
期刊：
影响因子：
--
作者：
Z. P. Fedorova;Z. S. Yankina
通讯作者：
Z. S. Yankina
影响因子：
--
作者：
K. Aagaard;A. T. Roach;J. Schumacher
通讯作者：
K. Aagaard;A. T. Roach;J. Schumacher
影响因子：
5.2
作者：
S. Danielson;K. Hedstrom;K. Aagaard;T. Weingartner;E. Curchitser
通讯作者：
E. Curchitser
影响因子：
3.6
作者：
Danielson, S.;Weingartner, T.;Woodgate, R.
通讯作者：
Woodgate, R.