Lesson 6. Monitoring Arctic sea ice
The Arctic is one of the areas where the impacts of global climate change are strongest. It is also an area which is quite difficult to measure in situ and thus one where satellite observations show their full strength. Several different sensors are used to monitor sea ice in the Arctic. Some allow us to see the global picture; others give a closer, more detailed view. This lesson introduces examples of both types. Monthly radiometer data is supplemented with a zoom in on one area with SAR data. The lesson also mentions freeboard measurements from CryoSat altimetry, which will become available as an ESA product towards the end of 2013.