Signatures of stirring and mixing in the Japan sea surface temperature patterns in autumn 1993 and spring 1994

We tested the hypothesis of synchronous interannual changes in forage fish dynamics around the North Pacific Rim. To do this, we sampled forage fish communities using a seabird predator, the rhinoceros auklet ( Cerorhinca monocerata ), at six coastal study sites from Japan to California. We investigated whether take of forage fishes was related to local marine conditions as indexed by sea surface temperature (SST). SST was concordant across sites in the eastern Pacific, but inversely correlated between east and west. Forage fish communities consisted of anchovy ( Engraulis spp.), sandlance ( Ammodytes spp.), capelin ( Mallotus spp.), and juvenile rockfish ( Sebastes spp.), among others, and take of forage fish varied in response to interannual and possibly lower-frequency oceanographic variability. Take of primary forage species were significantly related to changes in SST only at the eastern sites. We found synchrony in interannual variation of primary forage fishes across several regions in the eastern Pacific, but no significant east–west correlations. Specifically in the Japan Sea, factors other than local SST or interannual variability may more strongly influence forage fishes. Predator diet sampling offers a fishery-independent, large-scale perspective on forage fish dynamics that may be difficult to obtain using conventional means of study.

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Intercomparison between the satellite and Drifter observed sea surface temperature in East/Japan Sea

2020 IEEE 3rd International Conference on Information Communication and Signal Processing (ICICSP) ◽

10.1109/icicsp50920.2020.9232104 ◽

2020 ◽

Author(s):

Shiyao Chen ◽

Haodi Wang ◽

Ning Wang ◽

Peilong Yu ◽

Xiao Yang ◽

...

Keyword(s):

Surface Temperature ◽

Sea Surface Temperature ◽

Japan Sea ◽

Sea Surface

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Long-term changes of the thermal characteristics in the Japan Sea surface water and peter the great bay and their relationship with large-scale climatic processes

Trudy VNIRO ◽

10.36038/2307-3497-2020-180-72-87 ◽

2020 ◽

Vol 180 ◽

pp. 72-87

Author(s):

G. V. Khen ◽

E. I. Ustinova ◽

Yu. D. Sorokin ◽

L. Yu. Matyushenko

Keyword(s):

Surface Temperature ◽

Large Scale ◽

Peter The Great Bay ◽

Thermal Characteristics ◽

Japan Sea ◽

Sea Surface ◽

Climate Indices ◽

Peter The Great ◽

Great Bay ◽

The Japan Sea

Analysis of the long-period changes of the surface thermal characteristics in the Japan Sea, including the ice cover of Peter the Great Bay, was carried on the basis of the regional databases formed from open sources. The relationship of the observed changes with large-scale processes characterized by well-known climatic indices was investigated. It was revealed that surface temperature changes in the Japan Sea, its Northern part and in Peter the Great Bay in winter and summer occur synchronously. In the new century (2001–2017), the growth rate of the sea surface temperature slowed down in comparison with the last 25 years of the 20th century. The most influential in these areas were the large-scale processes, which are characterized by the index of the Siberian anticyclone and the West Pacific index. We also analyzed the sustainability of the statistical relationships between regional thermal characteristics and large-scale climate indices. Special attention was paid to the change in the character of the relationships at different time periods. The pronounced rearrangements of the linkages accompanied by a change in the sign of the correlation coefficients corresponded to the well known climatic regime shifts in most of the cases under study. The most notable restructuring occurred in 1988/89.

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