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Thursday, July 30, 2020 | History

2 edition of Climatology of surface heat fluxes over the California current region found in the catalog.

Climatology of surface heat fluxes over the California current region

Craig S Nelson

Climatology of surface heat fluxes over the California current region

by Craig S Nelson

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  • 38 Currently reading

Published by U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service in Seattle, WA .
Written in English

    Subjects:
  • Heat -- Transmission,
  • Climatology,
  • California -- Climate

  • Edition Notes

    StatementCraig S. Nelson and David M. Husby
    SeriesNOAA technical report NMFS SSRF -- 763
    ContributionsHusby, David M, United States. National Marine Fisheries Service
    The Physical Object
    Paginationiii, 155 p. :
    Number of Pages155
    ID Numbers
    Open LibraryOL13606364M

    Previous analyses of observed surface heat fluxes (Cayan ) and ocean model hindcasts of the surface layer heat budget over the entire North Pacific Ocean (Miller et al. ) suggest that along the California coast the long-term SST signal is dominated by changes in surface heat fluxes. However, it is still unclear wheth-. present climate conditions Perturbation: Forced by winds, surface heat fluxes, and BC changes: SST warmed - deg C An eddy-permitting ocean model hindcast reveals that the wind stress increases beat the surface warming Upwelling is increased Auad, Miller, Di Lorenzo, JGR, Increased coastal upwelling.

    The warm waters observed during the NE Pacific / marine heatwave altered the surface energy balance and disrupted ocean–atmosphere interactions in the region. In principle, ocean–atmosphere interactions following the formation of the marine heatwave could have perpetuated warm SSTs through a positive SST‐cloud feedback. The predictive skill of the Table 1 flux products within the California Current seasonal heat budget (Figs. ) is defined to be the fraction of heat content variance that each explains, when added to the other flux components from COADS to make up the net surface heat flux. Perfect skill.

      Northeast Pacific Regional Climatology The Northeast Pacific (NEP) is an important region in the North Pacific Ocean. The NEP is home to the California Current System (CCS) and contains a large coastal upwelling zone along the west coast of North America. Date Published: May Keywords: climate models, Coupled ocean-atmosphere feedbacks, Eastern boundary current, eastern tropical pacific, humboldt current, mesoscale eddies, modeling-system, Peru current, satellite measurements, spectral model, sst, Surface fluxes, surface wind stress, temperature, VOCALS, vocals-rex, western arabian sea Abstract: Ocean-atmosphere coupling in the Humboldt Current.


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Climatology of surface heat fluxes over the California current region by Craig S Nelson Download PDF EPUB FB2

Get this from a library. Climatology of surface heat fluxes over the California current region. [Craig S Nelson; David M Husby; United States. National Marine Fisheries Service.].

Previous analyses of observed surface heat fluxes and ocean model hindcasts of the surface layer heat budget over the entire North Pacific Ocean (Miller et al. ) suggest that along the California coast the long-term SST signal is dominated by changes in surface heat r, it is still unclear whether these findings are consistent with observations in the by: The Pacific Decadal Oscillation (PDO) is a robust, recurring pattern of ocean-atmosphere climate variability centered over the mid-latitude Pacific PDO is detected as warm or cool surface waters in the Pacific Ocean, north of 20° the past century, the amplitude of this climate pattern has varied irregularly at interannual-to-interdecadal time scales (meaning time periods of a.

ducted over the region of the California Current System (CCS) suggest that there is tight coupling between sum-mertime SST gradients and wind stress derivatives [Chelton et al., ; Chelton and Xie, ].

The new system developed in this study will be used to identify the coupling effect of the California coastal area, which is absent in KKCited by:   The “climate shift” of /77 (Trenberth ) warmed the California Current (Bograd and Lynn ) through altered air–sea heat fluxes and Ekman advection (Miller et al.

The warming continued through the s (Roemmich ) in concert with a depression of the main thermocline and a marked decrease of zooplankton (Roemmich Cited by:   1 Introduction Study Region. The Southern California Bight (SCB) is a region south of Point Conception where the California Coast takes a sharp eastward turn that complicates atmospheric and oceanic flows (Gelpi & Norris, ; Hickey, ; Winant et al., ).The SCB encapsulates an area in which the California current departs from its shorebound southward flow to.

The annual cycle shows a phase change from the surface to the thermocline, reflecting the effects of air/sea fluxes at the surface and upwelling in the thermocline. The interannual anomalies are examined with an emphasis on climate events of the last ten years including the El Nino, the La Nina, the warm anomaly of   The Southern Ocean’s contribution to the climate system is mediated through air–sea heat fluxes.

Air–sea heat fluxes are important because of their influence on water mass transformation and on the oceanic uptake of heat (e.g., Speer et al. ; Dong et al. ; Gille ).Despite the importance of surface fluxes, at present there is little agreement about the choice of products for.

Time series over – of net surface heat flux Q 0 spatially averaged over the land free domain of Fig. 1 (°–°W, 30°–38°N). Positive is defined as downward into the ocean.

Positive is defined as downward into the ocean. Ohishi S, Tozuka T, Komori N () Frontolysis by surface heat flux in the Agulhas Return Current region with a focus on mixed layer processes: observation and a high‑resolution CGCM.

Clim Dyn – Article; Google Scholar. In the California Current System off the U.S. West Coast, predominant equatorward winds during summer 1 result in net offshore transport in the surface. The climatological equatorward surface winds are weakened during the developing phase of the California Niño, but possible contributions from the latent heat flux.

The surface ocean current’s imprint on the wind stress (known as the current feedback) has a significant influence on the wind power input to the ocean. In this study, we investigate the effect of the current feedback on mesoscale eddy energetics in the Kuroshio extension region using a high-resolution (9 km) coupled regional climate model.

We perform three sets of simulations: one. The surface heat and freshwater fluxes were derived from the Comprehensive Ocean–Atmosphere Data Set (COADS) (da Silva et al., ) and applied with a surface temperature and salinity restoring following the formulation of Barnier et al.

The models spin up within about 5 years, permitting us to use the results from model years 6. The methodology to be applied in this investigation derives from the statistical relationships between variability in sea surface temperature (SST) and turbulent surface heat fluxes (SHFs) that are revealed by simple stochastic climate models (Hasselmann ; Frankignoul and Hasselmann ; Reynolds ; von Storch ).In particular, the functional form of the lead–lag correlation.

] over the period – The SST boundary condition includes a time-dependent relaxation to SST reanalysis [Smith and Reynolds, ] with a timescale 1 month to account for errors in the NCEP surface heat fluxes [Josey, ].

The SSS boundary condition is a corrected monthly climatology of freshwater flux, which. At the surface of the ocean, the tropical ocean is heated and the high latitude ocean is cooled, in the annual mean (average over many years).

The map shows the annual mean surface heat flux. Positive: ocean is heated. Negative: ocean is cooled. 4 a) Circle the two regions of maximum ocean heat loss in the mid-latitude Northern Hemisphere. Advective transport from both model output and data are combined with surface fluxes to determine budgets of heat and freshwater in the closed region.

The northward heat transport across the XBT track is estimated to be +/- pW, and has variability of almost pW on year time scales, while freshwater transport is estimated to be. Climate - Climate - Circulation, currents, and ocean-atmosphere interaction: The circulation of the ocean is a key factor in air temperature distribution.

Ocean currents that have a northward or southward component, such as the warm Gulf Stream in the North Atlantic or the cold Peru (Humboldt) Current off South America, effectively exchange heat between low and high latitudes. Introduction.

Ina region of highly anomalous warm ocean anomalies (i.e., a marine heatwave), colloquially known as “the Blob,” developed in the surface ocean of the northeast Pacific (Bond et al., ).The California Current System (CCS) was subsequently impacted by rapid anomalous warming in earlyand large positive sea surface temperature anomalies (SSTa) persisted in the.

[6] The monthly mean seasonal cycle climatology of total surface heat flux is computed during spin-up (no anomalous forcing) by evaluating bulk formulae that use model SST with ECMWF-derived atmospheric fields (air temperature, humidity, cloudiness, etc.).

The daily mean seasonal cycle is then saved (averaged over the last 10 years of a year.Warm events in the California Current and Gulf of Alaska blob region: El Niño or not? Paul Fiedler*1 and Nate Mantua *2 *1 NOAA/NMFS Southwest Fisheries Science Center, La Jolla, CA 2 NOAA/NMFS Southwest Fisheries Science Center, Santa Cruz, CA Abstract The El Niño – Southern Oscillation (ENSO) is a dominant mode of interannual climate variability.

The Arctic (–90°N) is the region experiencing the most rapid increase in surface temperature in response to global warming 1,2,3,4; it is projected .