Journal cover Journal topic
Climate of the Past An interactive open-access journal of the European Geosciences Union
doi:10.5194/cp-2016-102
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
01 Nov 2016
Review status
This discussion paper is under review for the journal Climate of the Past (CP).
Centennial to millennial climate variability in the far northwestern Pacific (off Kamchatka) and its linkage to East Asian monsoon and North Atlantic from the Last Glacial Maximum to the Early Holocene
Sergey A. Gorbarenko1, Xuefa Shi2, Min-Te Chen3, Galina Yu. Malakhova4, Aleksandr A. Bosin1, Yanguang Liu2, and Jianjun Zou2 1V.I. Il'ichev Pacific Oceanological Institute, Russia
2First Institute of Oceanography, SOA, China
3National Taiwan Ocean University, Taiwan
4North-East Interdisciplinary Science Research Institute FEB RAS, Russia
Abstract. High resolution reconstructions based on productivity proxies and magnetic properties measured from sediment core 41-2 (off Kamchatka), reveal prevailing centennial-millennial productivity/climate variability in the northwestern (NW) Pacific from the Last Glacial Maximum (LGM) to the Early Holocene (EH). The core age model is established by AMS 14C dating using foraminifer shells from the core and by correlating the productivity cycles and relative paleomagnetic intensity records with those of well-dated nearby core, SO-201-12KL. Our results show a pronounced feature of centennial-millennial productivity/climate cycles of the NW Pacific had occurred synchronicity with the summer East Asian Monsoon (EAM) at sub-interstadial scale during the LGM (3 cycles), Heinrich Event 1(3 cycles), and Bølling/Allerød warming (4 cycles), and over the EH (3 cycles). Our comparison of the centennial-millennial variability to the Antarctic EDML (EPICA Dronning Maud Land) ice core suggests a “push” effect of Southern hemisphere temperature gradients on the summer EAM intensifications. Besides the linkages of NW Pacific high productivity and summer EAM, we observed that five low productivity cycles during EH are nearly synchronous with cooling in Greenland, weakening of the summer EAM, and decreases in solar irradiance. We propose that such centennial-millennial productivity/climate variability in the NW Pacific and sequence of sub-stadial/interstadials in the EAM from the LGM to EH are a persistent regional features, synchronous with the Greenland/North Atlantic short-term changes. We speculate that such climate synchronicity was forced also by changes in Atlantic meridional overturning circulation coupled with Intertropical Convergence Zone shifting and the northern westerly jets reorganization.

Citation: Gorbarenko, S. A., Shi, X., Chen, M.-T., Malakhova, G. Yu., Bosin, A. A., Liu, Y., and Zou, J.: Centennial to millennial climate variability in the far northwestern Pacific (off Kamchatka) and its linkage to East Asian monsoon and North Atlantic from the Last Glacial Maximum to the Early Holocene, Clim. Past Discuss., doi:10.5194/cp-2016-102, in review, 2016.
Sergey A. Gorbarenko et al.
Sergey A. Gorbarenko et al.
Sergey A. Gorbarenko et al.

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