Narwhals document continued warming of southern Baffin Bay
Narwhals document continued warming of southern Baffin Bay
复制标题
独角鲸记录了巴芬湾南部的持续变暖
DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
M. Steele
中科院分区：
文献类型：
--
作者：
K. Laidre;M. Heide‐Jørgensen;W. Ermold;M. Steele
[1]我们报告了从巴芬湾和北方戴维斯海峡收集的冬季数据，戴维斯海峡是连接北极与亚极地北大西洋的主要门户，使用独角鲸（独角鲸）作为海洋学采样平台。在2005年至2007年期间，14头独角鲸被安装了与卫星相连的时间-深度-温度记录仪。发射器收集并传输了12月至4月期间每次潜水的水柱温度分布，其中>90%的最大日潜水深度到达底部。2007年4月在巴芬湾中部进行的15次基于温度计的电导率-温度-深度（CTD）模型与温度测量相结合，并与北极气候模型中用于该地区的水文气候学值进行了比较。鲸鱼和CTD数据的冬季最高温度非常一致，巴芬湾近岸和近海以及戴维斯海峡的最高温度在4.0°C和4.6°C之间。温暖的Irminger水在57°W和59°W（68°N）之间200和400 m深处被确定。鲸鱼的数据与气候学上的最高温度有很好的相关性;然而，它们平均高出0.9°C ±0.6°C（P 1700米提供了一个有用的机会来对该地区进行采样。
[1] We report on wintertime data collected from Baffin Bay and northern Davis Strait, a major gateway linking the Arctic with the subpolar North Atlantic, using narwhals (Monodon monoceros) as an oceanographic sampling platform. Fourteen narwhals were instrumented with satellite-linked time-depth-temperature recorders between 2005 and 2007. Transmitters collected and transmitted water column temperature profiles from each dive between December and April, where >90% of maximum daily dive depths reached the bottom. Temperature measurements were combined with 15 helicopter-based conductivity-temperature-depth (CTD) casts taken in April 2007 across central Baffin Bay and compared with hydrographic climatology values used for the region in Arctic climate models. Winter temperature maxima for whale and CTD data were in good agreement, ranging between 4.0°C and 4.6°C in inshore and offshore Baffin Bay and in Davis Strait. The warm Irminger Water was identified between 57°W and 59°W (at 68°N) between 200 and 400 m depths. Whale data correlated well with climatological temperature maxima; however, they were on average 0.9°C warmer ±0.6°C (P 1700 m offer a useful opportunity to sample the area.