Slope Water Interaction Workshop

23-24 August, 2000

Clark Laboratory, Woods Hole Oceanographic Institution

Abstract

• Introduction
• Basic Phenmenon
  • May 1999 Slope Water Intrusion (AVHRR)
  • June 1997 Gulf Stream Intrusion (AVHRR)
  • May 1997 Detrainemnt Event (AVHRR)
  • Eddy-Continental Shelf Interaction (Model Results)
  • April 1999 Scotian Shelf Crossover Event (AVHRR)

Overviews

• 1995 Events
• 1997 Events
• 1997 Cruises
• 1999 Events
• 1999 Cruises

Observations and Models

• BIO Moorings
  • June 1997 R/V Parizeau Cruise Track
  • 1997 Southeast Flank Mooring
  • 1999 Northeast Channel Mooring
• Great South Channel Mooring Deployment Cruises
  • Mooring Positions
  • Jan 1997 (OC 296) CTD Stations
  • Aug 1997 (OC 311) CTD Stations
• Eddy Interactions with the Continental Shelf- Model Results
  • No Background Flow
  • Background Shear Flow
• May-June 1997 Detrainment
  • EN301 Cruise Track with AVHRR
• March 1997 SeaSoar- Storm Induced Exchange and Scotian Shelf Crossover
  • Pre-Storm AVHRR
  • Post-Storm AVHRR
  • Survey Chart
• June-July 1997 SeaSoar- Gulf Stream Plume Interactions
  • Survey Chart
  • Early AVHRR (streamer)
  • Mid AVHRR (streamer)
  • Late AVHRR (tendril)
• 1995-1999 Remote Sensing

1995-1999 Remote Sensing
J. Bisagni (UMass Dartmouth)

Planned Phase IV work may include an in-depth analysis of satellite-derived SST images over the time period (1995-1999) defined by this workshop. This work will carefully examine the number and locations of Gulf Stream warm-core rings (WCR's), WCR-streamers, Scotian Shelf water overwashes, Northeast Channel eddies and Labrador Slope water surface signals. It is important to note that we will remap to a larger domain for this "census" work than our images available currently on the GLOBEC website. I anticipate some sort of "atlas" product along with availability of the products on both our JGOFS and *new* DODS site (soon!). I believe strongly that such an analysis is very important to any GLOBEC Georges Bank synthesis work.

Our covariance EOF analysis of SST imagery from late 1993 through late 1996 shows strong interannual variability (IAV) in the temperatures located offshore of Georges Bank which is attributed to IAV in the number of "degree-days" of WCR's over the 3-year period. This paper is forthcoming in the DSR II volume. I intend to bring some figures from this paper to the meeting. Our 5-day averaged OI SST grids/images extend from late 1993 through the end of 1998...I may be able to extend them through the end of 1999.

• Pathfinder-processed AVHRR SST images and SST frontal images, 512 X 512 pixel, 1.4 km-resolution, GLOBEC "standard" domain (see Web-based documentation), 1985-1996 all passes (~2 images per day). (NOTE: Not Available on the GLOBEC Website)
• MCSST-processed AVHRR SST images, 512 X 512 pixel, 1.4 km-resolution, GLOBEC "standard" domain (see Web-based documentation), 1993-present all passes (~2 images per day).
• MCSST-processed AVHRR SST images, 512 X 512 pixel, 1.0 km-resolution, GLOBEC "blowup" domain (see Web-based documentation), 1995, 1997 & 1999 field periods all passes (~2 images per day).
• MCSST-based, cloud-free, optimally-interpolated daily AVHRR SST 512 X 512 images and 5-day averaged SST ASCII grids, ~7.0 km-resolution, reduced GLOBEC "standard" domain, 1993-1998.
• SST frontal ASCII files (raster & geolocated), 1985-1996 (Pathfinder-derived) and 1999 field year (MCSST-derived), all passes.