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episode 229: (Ant-)Arctic Sea Ice
Guest: Walt Meier Host: Markus Voelter Shownoter: Tim Jurik
The sea ice in the arctic and antarctic regions of the earth is an especially sensitive indicator of the earth’s climate, and in particular, the current overall atmospheric temperature of the planet. It was recently reported to have reached a new low. Our guest, NASA’s Walt Meier explains why this is the case and which processes govern the increase or decrease of the ice. We then discuss how the ice mass is measured based on satellite and how its thickness is estimated based mostly on in-situ measurements. We cover climate modeling and its connection to sea ice and conclude with an outlook on future research.
Introduction 00:02:33Walt Meier | Nasa Goddard | Cryospheric Sciences Lab | Operation Icebridge
Sea Ice and Climate Change 00:09:15Albedo | Melt Ponds
Modeling/Simulation 00:27:11Overview of Ice Observation History 00:38:19
Forcing Mechanisms for Sea Ice Change 00:45:42
Sensing and Data Collection 00:49:50
Passive Microwave Sensing | Active | Submarine Sonar | Radio Altimeter | Ice cloud and Land Elevation Satellite (ICESat & ICESat-2) | Cryosat | Cryosat-2 | Capillary Wave | Defense Meteorological Satellite Program (DMSP) | Special Sensor Microwave Imager/Sounder (SSMIS) | Public Data Sets
Greenland Ice 01:44:01Gravity Recovery And Climate Experiment (GRACE)
Data Acceptance 01:48:23Expected Areas and Focus of Research 01:52:51