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Record-breaking warming in the Kamchatka Current halocline

机译:在Kamchatka当前卤芯中录制变暖

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We used historical CTD observations and Argo data to obtain the characteristics of the Kamchatka Current halocline and its eddies. Kamchatka Current eddies have a cold low salinity core in contrast with Aleutian eddies that contain warm and saline waters of Alaskan Stream origin. The Kamchatka Current eddies are smaller with diameter of similar to 100-120 km. Kamchatka Current eddies have a thick cold layer in a halocline. The temperature in their core increased by similar to 2.4 degrees C from the beginning of observations in 1990, while salinity decreased. We found that 2012 was the coldest year in the Kamchatka Current. Record-breaking warming occurred in the Kamchatka Current during 2015 to 2018. Temperature in the halocline rose by similar to 3 degrees C from 2012 to 2018 at 26.6 sigma(theta), while in the western Bering Sea temperature rose by 2.3 degrees C. It is plausible that the warming in the Kamchatka Current halocline during 2012 to 2018 is associated with the lowest recorded sea ice coverage in the Bering Sea. Similar warming occurred in the Oyashio Current. Salinity, temperature and specific density in the 2012 Simushir eddy were extremely low for the 30-year row of observations from 1990 to 2020. Extremely low salinity was also found in the 2012 Aleutian eddy off the Near Strait.
机译:我们使用了历史的CTD观察和ARGO数据来获得堪察加当前卤素线及其漩涡的特征。 Kamchatka当前漩涡具有冷的低盐度核心,与阿拉斯加流源的温暖和盐水含有温暖和盐水的阿列丁·埃迪。 Kamchatka当前漩涡的直径较小,类似于100-120公里。 Kamchatka当前漩涡在卤划线中具有厚厚的冷层。在1990年的观察开始时,核心的温度增加到2.4摄氏度,而盐度降低。我们发现2012年是堪察加当前最寒冷的一年。在2015年至2018年的堪察加当前唱片中发生了纪录。卤化水中的温度升至2012年至2018年的3摄氏度,在26.6西格玛(Theta),而在西方飞虱海温上升到2.3℃。它众所律的是,2012年至2018年堪察加当前Halocline的变暖与白垩中最低的录制海冰覆盖率有关。牡兽电流发生了类似的变暖。 2012年Simushir Eddy的盐度,温度和特定密度对于1990年至2020年的30年的观察行为极低。在2012年的Aleutian涡离线近海峡中也发现了极低的盐度。

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