Arctic sea ice thickness: From submarine sonars to satellite photon-counting altimeters (2020-2021 J. Tuzo Wilson lecture by Dr. Ron Kwok)

When:
February 24, 2021 @ 4:00 pm – 6:00 pm
2021-02-24T16:00:00-05:00
2021-02-24T18:00:00-05:00

Dear All,

You are invited to join the 2020-2021 J. Tuzo Wilson lecture on Feb 24th, 4:10 -6 pm by Dr. Ron Kwok:

Title: Arctic sea ice thickness: From submarine sonars to satellite photon-counting altimeters

Speaker: Dr. Ron Kwok (University of Washington)

Date/Time: Wed, Feb 24, 2021 Time: 4:10-6:00pm

Zoom link:
https://zoom.us/j/98984389560?pwd=TmFqS2ZUQXhoZ3h1dXgxL25LRisrQT09
(webinar ID: 989 8438 9560)

Abstract:
Alongside the widely reported decline in Arctic ice extent, there have also been dramatic losses in sea ice thickness and volume. Instead of a relatively consistent record of sea ice coverage from satellite passive microwave radiometers since the late seventies, assessments of large-scale decadal changes in sea ice thickness and volume have depended on measurements from a variety of sources: submarine and airborne surveys, and mapping with satellite altimetry. Even though there is sometimes sparse sampling (in space and time), lack of consistency in measurement approaches and continuity in individual records, these combined thickness datasets broadly depict an ice cover that has thinned everywhere. Why are sea ice thickness measurements so difficult to obtain? In my talk, I will provide a brief description of the nature of the ice cover, a short history of how we have constructed a record of sea ice thickness of the Arctic Ocean, current technologies for observing the ice thickness, and the changes in thickness and volume over the last half century.

For more information, please check out the event webpage:
https://tuzowilson.physics.utoronto.ca/

John Tuzo Wilson was a member of the Department of Physics at University of Toronto, and is probably Canada’s most illustrious geoscientist. The J. Tuzo Wilson public Lecture is a well-established annual event sponsored by the department of Physics, University of Toronto, since 1996 which draws people from a broad spectrum of Toronto’s vibrant intellectual community. Past Wilson lectures are listed here:
https://tuzowilson.physics.utoronto.ca/j-tuzo-wilson-lecture-series/


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