Polar lows in the Labrador Sea
Polar lows in the Labrador Sea
复制标题
拉布拉多海的极地低压
DOI：
10.3402/tellusa.v48i1.11630
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发表时间：
1996
期刊：
影响因子：
2
通讯作者：
S. Sathiyamoorthy
中科院分区：
文献类型：
--
作者：
G. Moore;M.C. Reader;J. York;S. Sathiyamoorthy
在本文中，我们将描述我们对1992年冬季发生在拉布拉多海的极低压事件的分析。不幸的是，由于没有对这一事件的现场观测，我们将依靠卫星数据以及ECMWF的高分辨率客观分析来记录低气压形成的环境和低气压本身的结构。我们将表明，极地低气压是在冷空气爆发期间形成的，冷空气爆发是由一个强烈的天气尺度低气压经过而形成的。极低压似乎是沿着线性云特征发展的，这是低层绝热诱发的位涡度异常和从加拿大北极传播到该地区的高层位涡度异常相互作用的结果。通过TOMS和TOVS对总塔柱臭氧的反演，我们能够识别出高层位涡异常的特征。在其成熟状态下，我们将证明有非常强的风，并因此产生与极低压相关的大感热和潜热通量。总之，1992年拉布拉多海极低压为研究海气相互作用和对流层与平流层之间的耦合提供了一个极好的机会。认识到与这些风暴有关的大气的强烈加热和伴随的海洋的冷却可能足以引发海洋中的下流事件，这可能代表了迄今为止尚无文献记载的快、慢气候系统之间的联系，值得进一步关注。DOI: 10.1034 / j.1600-0870.1996.00002.x
In this paper, we will describe our analysis of a polar low event that occurred in the Labrador Sea during the winter of 1992. As there are unfortunately no in-situ observations of this event, we will rely on satellite data as well as the high-resolution objective analaysis from the ECMWF to document the environment in which the low developed and the structure of the low itself. We will show that the polar low developed during a cold air outbreak that was precipitated by the passage of an intense synoptic-scale low. The polar low appears to have developed along a linear cloud feature as the result of an interaction between a low-level diabatically induced potential vorticity anomaly and an upper-level potential vorticity anomaly that propagated into the area from the Canadian Arctic. We will also show that with the TOMS and TOVS retrievals for total column ozone, we are able to identify a signature of the upper-level potential vorticity anomaly. In its mature state, we will show that there were very strong winds, and as a result large fluxes of sensible and latent heat, associated with the polar low. In summary, the 1992 Labrador Sea polar low provides one with an excellent opportunity to study air-sea interactions and the coupling between the troposphere and stratosphere. The realization that the strong heating of the atmosphere and the concomitant cooling of the ocean associated with these storms may be sufficient to initiate downwelling events in the ocean may represent a hitherto undocumented link between the fast and slow climate systems that deserves further attention. DOI: 10.1034/j.1600-0870.1996.00002.x
挪威海上空极地低气压的机载测量（日语）
DOI：
--
发表时间：
2002
期刊：
Antarctic Records 46
影响因子：
--
作者：
Asuma;Y.;Y.Fukuda;K.Kikuchi;M.Shiobara;M.Wada;G W.K.Moore
通讯作者：
G W.K.Moore