Error Analysis of Real-Time Remotely Sensed Microwave Sea-Ice Motions in the Western Arctic Ocean

Abstract

An algorithm used to composite SSM/I 85.5 GHz imagery and derive sea ice motion was adapted for operational testing at Fleet Numerical Meteorology and Oceanography Command (FNMOC). A feature tracking technique was applied to a 6-month period, with data provided by FNMOC and the Naval Research Laboratory (NRL). Ice motions are detectable using the SSM/I motion algorithm, and fields of SSM/I motion vectors are qualitatively consistent with coincident fields of in situ buoy motion vectors. Accuracy of the SSM/I motion vectors relative to buoy motion vectors increase significantly with buoy speed. No correlation between SSM/I and buoy motion vectors is observed for speeds below 3 cm/s and correlation increases significantly above 5 cm/s. The results are very sensitive to compositing techniques used to combine SSM/I passes into a single sea ice representation. FNMOC data was composited using a "drop-in-the-bucket" technique while NRL data was composited by a bilinear interpolation technique. Significantly poorer results were found with ENMOC composited data.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2000
Accession Number
ADA386446

Entities

People

  • David M. Carsten

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Arctic Ocean
  • Computer Programming
  • Data Sets
  • Detection
  • Error Analysis
  • Grids
  • High Pressure
  • Jet Propulsion
  • Latitude
  • Measurement
  • Meteorological Satellites
  • Military Research
  • Oceans
  • Operating Systems
  • Sea Ice

Readers

  • Atmospheric Remote Sensing.
  • Computer Vision.
  • Control Systems Engineering.