The California current system during the last 136,000 years: response of the North Pacific High to precessional forcing

Yamamoto, Masanobu; Yamamuro, Masumi; Tanaka, Yuichiro

doi:10.1016/j.quascirev.2006.07.014

Cited by 52 publications

(53 citation statements)

References 51 publications

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“…Californian coast (c.f., Lyle et al, 2010), of which the ODP-1016 record in the Santa Barbara 286 basin (Yamamoto et al, 2007) is the closest to our study area (Fig. 5c).…”

mentioning

confidence: 53%

Glacial-interglacial climate changes recorded by debris flow fan deposits, Owens Valley, California

D’Arcy

Roda-Boluda

Whittaker

2017

Quaternary Science Reviews

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“…Californian coast (c.f., Lyle et al, 2010), of which the ODP-1016 record in the Santa Barbara 286 basin (Yamamoto et al, 2007) is the closest to our study area (Fig. 5c).…”

mentioning

confidence: 53%

Glacial-interglacial climate changes recorded by debris flow fan deposits, Owens Valley, California

D’Arcy

Roda-Boluda

Whittaker

2017

Quaternary Science Reviews

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“…This figure is available in colour online at www.interscience.wiley.com/journal/jqs California Current) was observed in mid MIS 5e and MIS 1 (Yamamoto et al, 2007b). The pattern of variation in DSST NEP dominated 23 and 30 ka periods (Fig.…”

Section: California Marginmentioning

confidence: 96%

“…6). As discussed by Herbert et al (2001) and Yamamoto et al (2007b), the weaker California Current during deglaciations induced the northward invasion of the Southern California Countercurrent to the California Borderland, which resulted in the early warming at glacial terminations.…”

Section: California Marginmentioning

confidence: 97%

“…1(C); Hickey, 1979). The relative intensities of the California Current and the Southern California Countercurrent Yamamoto et al (2007b). Spectral analysis was performed using Analyseries (Paillard et al, 1996) are controlled by the development of the North Pacific High (Hickey, 1979).…”

Section: California Marginmentioning

confidence: 99%

“…We revisited our previous studies (Yamamoto et al, 2004(Yamamoto et al, , 2005b(Yamamoto et al, , 2007b to better understand responses of the North Pacific climate to orbital forcing. We present a palaeoceanographic perspective of the North Pacific during the last two glacial cycles based on assessments of U K 0 37 -derived palaeotemperature records of IMAGES Core MD01-2421 off the coast of central Japan and Ocean Drilling Program (ODP) cores from Sites 1014 and 1016 off the coast California.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Response of mid‐latitude North Pacific surface temperatures to orbital forcing and linkage to the East Asian summer monsoon and tropical ocean–atmosphere interactions

Yamamoto¹

2009

J Quaternary Science

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Yamamoto, M. 2009. Response of mid-latitude North Pacific surface temperatures to orbital forcing and linkage to the East Asian summer monsoon and tropical oceanatmosphere interactions.ABSTRACT: We present a palaeoceanographic perspective of the North Pacific during the last two glacial cycles based on U K 0 37 -derived palaeotemperature records of IMAGES Core MD01-2421 off the coast of central Japan and cores from the Ocean Drilling Program (ODP) Sites 1014 and 1016 off the coast of California. The sea surface temperature (SST) differences between ODP Sites 1014 and 1016 (DSST northeastern Pacific (NEP) ¼ SST ODP1014 -SST ODP1016 ) indicate the intensity of the California Current. Comparison of DSST NEP and the SST from Core MD01-2421 revealed anti-phase variation; high DSST NEP (indicating weakening of the California Current) corresponded to low SST at the Japan margin (indicating the southward displacement of the north-western Pacific subarctic boundary and weakening of the Kuroshio Extension), and vice versa. This finding suggests that the intensity of the North Pacific subtropical gyre circulation has varied in response to precessional forcing and that this response has been linked with changes in tropical ocean-atmosphere interactions. In the precessional cycle, the SST variation derived from Core MD01-2421 lags ca. 2.5-4 ka behind the variations shown by Hulu and Sanbao stalagmite d 18 O records and by the pollen temperature index from Core MD01-2421, suggesting out-of-phase variations of the North Pacific subtropical gyre circulation and the East Asian summer monsoon. These findings indicate that the behaviour of interactions between tropical oceanatmosphere dynamics and the East Asian summer monsoon may have varied in response to the precessional cycle.

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Precessional forced extratropical North Pacific mode and associated atmospheric dynamics

et al. 2014

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Using transient accelerated simulations of the Community Climate System Model version 3 and an Earth System Model of Intermediate Complexity as well as equilibrium experiments of the Community Earth System Model, we identified a response of the extratropical air-ocean coupled system to the precessional insolation changes at orbital timescales and named this extratropical response pattern as the North Pacific mode (NPM). Corresponding to the increased/decreased boreal winter/summer insolation at 22 ka (relative to 10-8 ka), the NPM is characterized by a western warm-eastern cold seesaw pattern of sea surface temperature (SST) over the extratropical North Pacific from November to April, a weakened winter Aleutian low and an anomalous anticyclonic circulation throughout the troposphere. This feature forms a barotropic warm-ridge response of tropospheric temperature and geopotential height to the precessional insolation. At the surface, rainfall increases over East Asia and the Northwest Pacific, which indicates a weakened East Asian winter monsoon, while drier conditions appear over the Northeast Pacific and the western coasts of North America. Associated with a negative phase of NPM is a weaker warming over the equatorial Pacific during winter. The increased winter insolation at precessional band not only induces the in-phase SST warming over the Northwest Pacific and the tropical Pacific, but also explains those extratropical atmospheric changes associated with NPM. The latter might be associated with the warm SST-induced tropospheric downstream ridge response through transient eddy activities. Besides the vital role of air-ocean interactions, the decreased summer insolation is also essential to the zonal SST seesaw of NPM at precessional band.

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The California current system during the last 136,000 years: response of the North Pacific High to precessional forcing

Abstract: Alkenone sea surface temperature (SST) records were generated from the Ocean

Cited by 52 publications

References 51 publications

Glacial-interglacial climate changes recorded by debris flow fan deposits, Owens Valley, California

Glacial-interglacial climate changes recorded by debris flow fan deposits, Owens Valley, California

Response of mid‐latitude North Pacific surface temperatures to orbital forcing and linkage to the East Asian summer monsoon and tropical ocean–atmosphere interactions

Precessional forced extratropical North Pacific mode and associated atmospheric dynamics

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