Change of nitrogen chemical tracer N2* between the Okhotsk Sea and the subarctic North Pacific

2021 ◽  
pp. 102693
Author(s):  
Yutaka W. Watanabe ◽  
Yuto Nakano ◽  
Jun Nishioka ◽  
Masanori Ito
Keyword(s):  
North Pacific ◽  
Okhotsk Sea ◽  
Chemical Tracer ◽  
Subarctic North Pacific

scholarly journals Causes of the Multidecadal-Scale Warming of the Intermediate Water in the Okhotsk Sea and Western Subarctic North Pacific

2015 ◽  
Vol 28 (2) ◽  
pp. 714-736 ◽  
Author(s):  
Takuya Nakanowatari ◽  
Tomohiro Nakamura ◽  
Keisuke Uchimoto ◽  
Hiroki Uehara ◽  
Humio Mitsudera ◽  
...  
Keyword(s):  
Ocean Circulation ◽  
North Pacific ◽  
Heat Budget ◽  
Frontal Region ◽  
Intermediate Water ◽  
Okhotsk Sea ◽  
Budget Analysis ◽  
Subarctic North Pacific ◽  
Essential Components ◽  
Western Subarctic North Pacific

Abstract Causes of the multidecadal-scale warming of the intermediate water in the Okhotsk Sea and the western subarctic North Pacific during 1980–2008 are investigated using an ice–ocean coupled model with interannually varying atmospheric forcing. A hindcast experiment qualitatively reproduces the warming and decadal fluctuations of the intermediate water that are similar to those of observations: the warming is significant along the western part of the Okhotsk Sea and subarctic frontal region. The effects of the thermohaline- and wind-driven ocean circulation on the warming are evaluated from perturbation experiments on thermohaline (turbulent heat and freshwater fluxes) and wind causes, respectively. The thermohaline causes are shown to contribute positively to warming in the Okhotsk Sea Intermediate Water (OSIW). The heat budget analysis for the OSIW indicates that the warming is related to a decrease in cold and dense shelf water (DSW) flux, which is caused by a decrease in sea ice and surface water freshening. In contrast, the wind cause has a cooling effect in the OSIW through an increase in DSW. In the subarctic frontal region, the warming is mainly caused by the wind stress change. The heat budget analysis indicates that the warming is related to an increase in the northward advection of the subtropical warm water. These results imply that both thermohaline- and wind-driven ocean circulation changes are essential components of the warming in the intermediate water. The atmospheric conditions responsible for the warming are related to a weakened Aleutian low and Siberian high in early and late winter.

Microzooplankton grazing constrains pathways of carbon export in the subarctic North Pacific

2021 ◽  
Author(s):  
Heather M. McNair ◽  
Françoise Morison ◽  
Jason R. Graff ◽  
Tatiana A. Rynearson ◽  
Susanne Menden‐Deuer
Keyword(s):  
North Pacific ◽  
Carbon Export ◽  
Subarctic North Pacific ◽  
Microzooplankton Grazing

scholarly journals Coralline alga reveals first marine record of subarctic North Pacific climate change

2007 ◽  
Vol 34 (7) ◽  
Author(s):  
Jochen Halfar ◽  
Robert Steneck ◽  
Bernd Schöne ◽  
G. W. K. Moore ◽  
Michael Joachimski ◽  
...  
Keyword(s):  
Climate Change ◽  
North Pacific ◽  
Coralline Alga ◽  
Subarctic North Pacific

scholarly journals Paleonutrient and productivity records from the subarctic North Pacific for Pleistocene glacial terminations I to V

2008 ◽  
Vol 23 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Holger Gebhardt ◽  
Michael Sarnthein ◽  
Pieter M. Grootes ◽  
Thorsten Kiefer ◽  
Hartmut Kuehn ◽  
...  
Keyword(s):  
North Pacific ◽  
Subarctic North Pacific

Increasing frequency of plastic particles ingested by seabirds in the subarctic North Pacific

1995 ◽  
Vol 30 (2) ◽  
pp. 151-157 ◽  
Author(s):  
Martin D. Robards ◽  
John F. Piatt ◽  
Kenton D. Wohl
Keyword(s):  
North Pacific ◽  
Subarctic North Pacific
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