Remote sensing of the fram strait marginal ice zone

Area of Science:

• * Remote Sensing
• * Oceanography
• * Sea Ice Physics

Background:

• * The Fram Strait marginal ice zone is a critical area for atmosphere-ocean-sea ice interactions.
• * Understanding sea ice morphology and dynamics is key to climate change research.

Purpose of the Study:

• * To analyze sequential remote sensing images for quantitative data on mesoscale ice morphology.
• * To elucidate the relationship between sea ice morphology and underlying ocean circulation.
• * To identify and verify ocean eddies influencing the ice pack.

Main Methods:

• * Analysis of sequential remote sensing images (radar) over a 1-week period.
• * Quantitative assessment of ice edge positions, concentrations, floe size distribution, and kinematics.
• * In situ oceanographic measurements for verification.

Main Results:

• * Marginal ice zone morphology correlates with ocean circulation under light to moderate winds.
• * High-resolution radar identified ocean eddies near the ice edge.
• * Ice kinematics revealed an ocean eddy beneath the interior pack ice, confirmed by in situ data.

Conclusions:

• * Sea ice morphology in the Fram Strait is a strong indicator of underlying ocean circulation patterns.
• * Remote sensing, particularly radar, is effective for detecting ocean eddies impacting sea ice.
• * Combined remote sensing and in situ data provide robust insights into ice-ocean interactions.