Arctic Mediterranean Exchanges: A consistent volume budget and trends in transports from two decades of observations
Arctic Mediterranean Exchanges: A consistent volume budget and trends in transports from two decades of observations
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DOI：
10.5194/os-15-379-2019
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发表时间：
2018-11
期刊：
影响因子：
3.2
通讯作者：
S. Østerhus;R. Woodgate;H. Valdimarsson;B. Turrell;L. de Steur;D. Quadfasel;S. Olsen;M. Moritz
中科院分区：
文献类型：
--
作者：
S. Østerhus;R. Woodgate;H. Valdimarsson;B. Turrell;L. de Steur;D. Quadfasel;S. Olsen;M. Moritz
北极的状况在一定程度上是由北冰洋地中海(AM)的海洋国家推动的，AM是北冰洋、北欧海及其邻近陆架海的统称。低纬度洋盆与该区域之间的交换通过白令海峡(太平洋流入)和横跨格陵兰-苏格兰海脊的通道(大西洋流入)进行。这些水域随后在AM内进行修改修改后的水将AM分成几个流动支流，分为两类：(1)浓密水通过横跨格陵兰-苏格兰山脊的深水通道溢出；(2)轻水在格陵兰两侧流出(地表流出)。这些交换将热量和盐分输送到AM和从AM传出，并且对AM中的条件很重要它们也是全球海洋环流和气候系统的一部分。用各种方法量化传输的尝试已经进行了很多年，但直到最近，观测覆盖范围才足够完整，可以仅基于观测对AM交换进行综合评估。在这篇EGU贡献中，我们重点关注观测(包括。运量时间序列)的所有主要AM-交换分支机构收集在过去20至30年。
Conditions in the Arctic are in part driven by the ocean state in the Arctic Mediterranean (AM), the collective name for the Arctic Ocean, the Nordic Seas, and their adjacent shelf seas. Exchange between the lower latitude ocean basins and this region occurs through the Bering Strait (Pacific inflow) and through the passages across the Greenland-Scotland Ridge (Atlantic inflow). These waters are subsequently modified within the AM. The modified waters leave the AM in several flow branches, which are grouped into two different categories: (1) overflow of dense water through the deep passages across the Greenland-Scotland Ridge, and (2) outflow of light water (surface outflow) on both sides of Greenland. These exchanges transport heat and salt into and out of the AM and are important for conditions in the AM. They are also part of the global ocean circulation and climate system. Attempts to quantify the transports by various methods have been made for many years, but only recently, the observational coverage has become sufficiently complete to allow an integrated assessment of the AM-exchanges based solely on observations.In this EGU contribution, we focus on the observations (incl. volume transport time series) of all the main AM-exchange branches collected in the last 20 to 30 years.