NASA | IceBridge 2010 with Lora Koenig

NASA is monitoring sea ice and ice sheets using aircraft due to the loss of the IceSat satellite. The aircraft provide enhanced capabilities, allowing for more detailed measurements. Current findings show Arctic sea ice is slightly below average in extent but thinner than usual. The Arctic is a critical indicator of climate change, affecting global sea levels. NASA's aircraft are equipped with LIDAR and radar instruments to study ice dynamics. More information can be found on NASA's website.

Why are NASA aircraft currently used to monitor sea ice and ice sheets?

• Because they can cover more area than satellites

• Because they can measure surface elevations and explore beneath the ice

• Because they are cheaper than satellites

• Because they are faster than satellites

What is the current state of the Arctic sea ice extent according to the 30-year history?

• About average but thinner

• Below average

• Above average

• Significantly above average

Why is the Arctic ice considered a crucial indicator of Earth's climate health?

• It is unaffected by global warming

• It reflects sunlight and indicates climate change

• It is the coldest region on Earth

• It is the largest ice mass on Earth

What are outlet glaciers and why are they important to study?

• They are glaciers that form in the ocean

• They are unaffected by climate change

• They drain ice from the interior to the ocean, affecting sea levels

• They are the largest glaciers in Antarctica

What technology does NASA use to measure the surface height of ice?

• Thermal imaging

• Sonar

• LIDAR

• Infrared sensors