IceSat-2

Question 1

Who launched ICE-SAT 2 ?

Answer 1

NASA

Question 2

What is the full form of ICE - SAT ?

Answer 2

Ice cloud and Land Elevation Satellite -2

Question 3

What does it measure ?

Answer 3

Changes in the heights of Earths polar ice to understand cause of melt of icesheets
Avg annual elevation change covering Greenland and Antarctica

Question 4

Which instrument does it use for measurement ?

Answer 4

ATLAS (Advanced Topographic Laser Altimeter System)

Question 5

How does ATLAS measure height ?

Answer 5

By timing how long it takes for individual photons to travel from spacecraft to Earth and back

Question 6

What are the 4 objectives ?

Answer 6

1) Measure melting ice sheets and investigate the effects on sealevel rise
2) Measure and investigate changes in mass of icesheets and glaciers
3) estimate and study sea ice thickness
4) Measure height of vegetation in forests and other ecosystems