Satellite Surveys (1994-1998)
Satellite data (e.g., infrared, color, altimetry, scatterometer, SAR)
should be available throughout the duration of the study. These data
can contribute to the analysis and understanding of many of the
broad-scale and smaller-scale process oriented investigations in the
overall program. They can directly assist the sampling during cruises
by real time identification of major oceanographic features (e.g.,
fronts, rings) and changes in their location.
Questions: The satellite data collection and analysis component
should address the following questions:
Strategy: Satellite data should be acquired, analyzed, and
transmitted to research vessels and program investigators (including
modellers) participating in the program in near real-time.
Communication of imagery from shore to the ships is an important part of
this strategy. Post-cruise analyses of the imagery should include
quantitative comparisons with the shipboard, moored, and Lagrangian
observations, determinantion of the major frontal features and their
behavior in time and space, resolution of the well-mixed and the
stratified regions of the Bank in time and space, and time-series
analysis of the surface plant pigment and phytoplankton activity fields.
Satellite-based measurements will provide a detailed spatial resolution
of the surface field to complement time-series measurements obtained at
moorings. Satellite wave data should be ground truthed with
observations from moorings. Some satellite data are dependent on the
absence of cloud cover. A clear image of the Bank region generally can
be obtained on a time scale of every 2-5 days during spring and summer.
This frequency is sufficient for valuable guidance during sampling
operations and for meaningful post-cruise analyes.
- What is the temporal and spatial variability of the surface temperature and chlorophyll distributions in comparison with pigment related bio-optical measurements and direct primary production time-series measurements made throughout the water column during the study period?
- What is the temporal and spatial variability of the tidal mixing front and the shelf/Slope Water front?
- What is the temporal and spatial variability of the surface wave field over the Bank?
- When, where and under what oceanographic/atmospheric conditions do episodic exchanges of water occur from the Bank across the shelf/Slope Water front, and are they associated with greater mortality of the target species?
- When and how often do rings interact with the Bank?