1 / 6

Ron Kwok Jet Propulsion Laboratory California Institute of Technology

Critically Needed: Continued 3-day RADARSAT coverage of the Western Arctic Ocean during IPY. Ron Kwok Jet Propulsion Laboratory California Institute of Technology. 3-day RADARSAT mapping of Arctic Ocean.

cutler
Télécharger la présentation

Ron Kwok Jet Propulsion Laboratory California Institute of Technology

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. Critically Needed: Continued 3-day RADARSAT coverage of the Western Arctic Ocean during IPY Ron Kwok Jet Propulsion Laboratory California Institute of Technology

  2. 3-day RADARSAT mapping of Arctic Ocean • RADARSAT has been providing 3-day mapping of the Arctic Ocean for derivation of small-scale ice kinematics since Nov 1996 • These observations: • Provide unprecedented spatial sampling of Arctic sea ice drift and deformation • Support IPY field programs • Are crucial for process studies, model validation, model development, and climate analysis • Together with Envisat, provide basin scale coverage of the Arctic Ocean • These routine 3-day observations (through the Alaska Satellite Facility) will not be available to the science community after March 2008 (end of CSA/NASA MOU) • These observations are critical for supporting IPY science and operations in 2008 and 2009 • The gap in IPY coverage may be to big to be filled by other SARs at this time

  3. Arctic Ocean Coverage 24-day RADARSAT orbit cycle 3-day coverage • RADARSAT ScanSAR wide B (460 km swath) • 3-day repeat coverage within ASF reception mask • 6-day repeat coverage within Tromso reception mask • Acquistion since Nov 96 • Gap in Data set: Antarctic Mapping Campaign: Aug-Oct,97 • ~650 mins of SAR data/cycle • More than 500 images

  4. 102 km RADARSAT Geophysical Processor System (RGPS) Mapping of time-varying deformation in the ice cover Initial Grid resolution: 10 by 10 km Drift tracks ~10 km separation (initially) sampled 1-3 days for two-thirds of the Arctic Ocean for an entire winter 101 km 103 km

  5. Time-varying deformation (Divergence)

  6. Model Comparisons using RADARSAT ice drift from RGPS APR NOV

More Related