1 / 6

SPURS Synthesis

SPURS Synthesis. Research Objectives: • Budget calculations Resolve important terms of the freshwater and heat budgets of the upper 1000 m on temporal scales of a few days and spatial scales of the order of 100 to 1000 km around the salinity maximum .

byron-osborne
Download Presentation

SPURS Synthesis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SPURS Synthesis • Research Objectives: • • Budget calculations • Resolve important terms of the freshwater and heat budgets of the upper 1000 m on temporal scales of a few days and spatial scales of the order of 100 to 1000 km around the salinity maximum. • • Mixed layer formation, restratification, and erosion • Identify and quantify the processes responsible for the formation of a ~100-m thick surface mixed layer in the winter, for its re-stratification in the spring and summer and its relationship to the sub-surface salinity maximum. Assess the importance of lateral gradients in the time evolution of the mixed layer. • • Near-surface measurements • Provide a detailed description and analysis of the near-surface (top 5 m) temperature and salinity fields during a complete annual cycle, paying special attention to the role of this near-surface structure in air-sea interaction and its relevance to interpretation of satellite measurements.

  2. Budget calculations • Specific Tasks: • Estimatehorizontal advection and vertical advection. • Estimate entrainment fluxes during the wintertime mixed layer. • Synthesize turbulence estimates(Gliders, ship-based profilers, MLF, mooring). • Make objective maps of the all the data in the SPURS region • Calculate salt and heatbudgets • Evaluate how representative the SPURS measurements are in the context of seasonal and interannualvariability

  3. Budget calculations: Objective maps Decorrelation scales: 40 km and 5 days Moorings Seagliders Argo floats UCTD Note: Size of data marker is scaled by when it was collected relative to the central time.

  4. Budget calculations: Turbulence timeseries Extended (many months) dissipation measurement from autonomous Seagliders.

  5. Mixed layer dynamics • Specific Tasks: • Investigation of seasonal evolution of themixed layer depth and thermohaline characteristics in response to changing surface forcing, advection, and mixing. • Investigation of intrusions at the base of the mixed layer. • Investigation of inertial motions and internal waves. Left: Evolution of the upper ocean salinity observed by Mixed Layer Lagrangian floats. Right: Advection of Lagrangian floats relative to the center of the mooring array and the “SPURS box” (grey square).

  6. Near-surface variability • Specific Tasks: • Investigation of the dielcycle. • Study the impact of evaporation under low wind conditions on the near surface salinity. • Investigation of transient fresh pools. Temperature in the upper 10 meters over two days of T-Glider profiling, showing afternoon warming, particularly on Sept. 29th. Such days were also characterized by enhanced surficial salinity and enhanced near-surface turbulence .

More Related