IEEE Geoscience and Remote Sensing Society (GRSS), Bombay Chapter

Cordially invites you to

IEEE GRSS Technical Talk

Demise of Arctic Sea Ice: Why should we care about it?
Current challenges in Arctic sea ice monitoring from SAR Remote Sensing


Vishnu Nandan
Cryosphere Climate Research Group, University of Calgary, Alberta, Canada


Date: 16th July 2018 (Monday)
Time: 11:00 AM to 12:30 PM
Venue: CSRE Seminar Hall (1st Floor CSRE, IITB)

Abstract: The Arctic is on the path to a new climate regime influenced by thinner first-year ice (FYI). In contrast to Antarctic sea ice, Arctic sea ice has recently undergone significant changes, highlighted by substantial decline in sea ice thickness and extent, extensive loss of multi-year ice replaced by FYI, and decline in spring snow depth. These changes have significantly affected Arctic and mid-latitude climate, Arctic marine ecosystem, and directly impacted the Arctic marine navigation.

Active microwave remote sensing has been proven to be an efficient tool to characterize sea ice state variables such as thickness, volume, extent and concentration.  For example, the European Space Agency’s CryoSat-2 satellite mission provides radar altimeter data that are used to derive estimates of sea ice thickness and volume. These data are crucial to understanding recent variability and changes in Arctic sea ice. But are their estimates accurate and properly addressed?

This talk will first provide a grassroot-level understanding on why sea ice is critically important to our planet? We will then discuss more about how we can use microwave remote sensing to characterize and monitor recent changes in sea ice state variables? To answer challenges faced by the CryoSat-2 science community to accurately estimate sea ice thickness, this talk will also focus on our recent study where our research team demonstrated the impact of snow salinity affecting CryoSat-2 sea ice thickness estimates.

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IEEE GRSS Technical Talk by Dr. Vishnu Nandan

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