Interocean and Interbasin Exchanges

Sprintall, Janet; Siedler, Gerold; Mercier, Herlé

doi:10.1016/b978-0-12-391851-2.00019-2

Cited by 11 publications

(6 citation statements)

References 259 publications

(246 reference statements)

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“…Each has a slightly different "personality, " a likely consequence of the different land/ocean geometries of their ocean basins that affect SSS, such as E-P, mean circulation, and vertical and horizontal mixing processes (Vinogradova and Ponte, 2013;Busecke et al, 2014;Gordon and Giulivi, 2014). Additionally, each basin is linked in its own unique manner to global-scale, interocean circulation and overturning patterns (Gordon, 2001;Sprintall et al, 2013;Talley, 2013). In-depth, detailed study to explain the underlying causes of dissimilarities of the SSS-max regimes is needed.…”

Section: Discussionmentioning

confidence: 99%

Differences Among Subtropical Surface Salinity Patterns

Gordon¹,

Giulivi²,

Busecke³

et al. 2015

oceanog

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Section: Discussionmentioning

confidence: 99%

Differences Among Subtropical Surface Salinity Patterns

Gordon¹,

Giulivi²,

Busecke³

et al. 2015

oceanog

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“…The real climate system has no direct feedback between sea surface salinity (SSS) and surface water fluxes (see Durack et al, 2013, for further discussion). Correspondingly, there is no direct feedback in coupled climate models.…”

Section: Comments On Surface Salinity Restoringmentioning

confidence: 99%

OMIP contribution to CMIP6: experimental and diagnostic protocol for the physical component of the Ocean Model Intercomparison Project

et al. 2016

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Abstract. The Ocean Model Intercomparison Project (OMIP) is an endorsed project in the Coupled Model Intercomparison Project Phase 6 (CMIP6). OMIP addresses CMIP6 science questions, investigating the origins and consequences of systematic model biases. It does so by providing a framework for evaluating (including assessment of systematic biases), understanding, and improving ocean, sea-ice, tracer, and biogeochemical components of climate and earth system models contributing to CMIP6. Among the WCRP Grand Challenges in climate science (GCs), OMIP primarily contributes to the regional sea level change and near-term (climate/decadal) prediction GCs.OMIP provides (a) an experimental protocol for global ocean/sea-ice models run with a prescribed atmospheric forcing; and (b) a protocol for ocean diagnostics to be saved as part of CMIP6. We focus here on the physical component of OMIP, with a companion paper (Orr et al., 2016) detailing methods for the inert chemistry and interactive biogeochemistry. The physical portion of the OMIP experimental protocol follows the interannual Coordinated Ocean-ice Reference Experiments (CORE-II). Since 2009, CORE-I (Normal Year Forcing) and CORE-II (Interannual Forcing) have become the standard methods to evaluate global ocean/sea-ice simulations and to examine mechanisms for forced ocean climate variability. The OMIP diagnostic protocol is relevant for any ocean model component of CMIP6, including the DECK (Diagnostic, Evaluation and Characterization of Klima experiments), historical simulations, FAFMIP (Flux Anomaly Forced MIP), C4MIP (Coupled Carbon Cycle Climate MIP), DAMIP (Detection and Attribution MIP), DCPP (Decadal Climate Prediction Project), ScenarioMIP, HighResMIP (High Resolution MIP), as well as the ocean/sea-ice OMIP simulations.

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“…The forcing mechanisms for the pathways and seasonal variability of the L-PMOC are explored through analysis of the MO model solutions. Deep-water exchange between two interconnected basins can be forced by the gradient of deep pressure along the channels (Sprintall et al, 2013). We select two representative sites on the northeastern and southwestern sides of the YMJ region (hereafter referred to as NE and SW, NE site: 140.83 • E/10.83 • N, SW site: 136.9 • E/6.83 • N, Figure 9A) and examine their pressure difference.…”

Section: Forcing Mechanisms Of the L-pmocmentioning

confidence: 99%

Pathways, Volume Transport, and Seasonal Variability of the Lower Deep Limb of the Pacific Meridional Overturning Circulation at the Yap-Mariana Junction

Wang

et al. 2021

Front. Mar. Sci.

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The lower deep branch of the Pacific Meridional Overturning Circulation (L-PMOC) is responsible for the deep-water transport from Antarctic to the North Pacific and is a key ingredient in the regulation of global climate through its influence on the storage and residence time of heat and carbon. At the Pacific Yap-Mariana Junction (YMJ), a major gateway for deep-water flowing into the Western Pacific Ocean, we deployed five moorings from 2018 to 2019 in the Eastern, Southern, and Northern Channels in order to explore the pathways and variability of L-PMOC. We have identified three main patterns for L-PMOC pathways. In Pattern 1, the L-PMOC intrudes into the YMJ from the East Mariana Basin (EMB) through the Eastern Channel and then flows northward into the West Mariana Basin (WMB) through the Northern Channel and southward into the West Caroline Basin (WCB) through the Southern Channel. In Pattern 2, the L-PMOC intrudes into the YMJ from both the WCB and the EMB and then flows into the WMB. In Pattern 3, the L-PMOC comes from the WCB and then flows into the EMB and WMB. The volume transports of L-PMOC through the Eastern, Southern, and Northern Channels all exhibit seasonality. During November–April (May–October), the flow pathway conforms to Pattern 1 (Patterns 2 and 3), and the mean and standard deviation of L-PMOC transports are −4.44 ± 1.26 (−0.30 ± 1.47), −0.96 ± 1.13 (1.75 ± 1.49), and 1.49 ± 1.31 (1.07 ± 1.10) Sv in the Eastern, Southern, and Northern Channels, respectively. Further analysis of numerical ocean modeling results demonstrates that L-PMOC transport at the YMJ is forced by a deep pressure gradient between two adjacent basins, which is mainly determined by the sea surface height (SSH) and water masses in the upper 2,000-m layer. The seasonal variability of L-PMOC transport is attributed to local Ekman pumping and westward-propagating Rossby waves. The L-PMOC transport greater than 3,500 m is closely linked to the wind forcing and the upper ocean processes.

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Interocean and Interbasin Exchanges

Cited by 11 publications

References 259 publications

Differences Among Subtropical Surface Salinity Patterns

Differences Among Subtropical Surface Salinity Patterns

OMIP contribution to CMIP6: experimental and diagnostic protocol for the physical component of the Ocean Model Intercomparison Project

Pathways, Volume Transport, and Seasonal Variability of the Lower Deep Limb of the Pacific Meridional Overturning Circulation at the Yap-Mariana Junction

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