Gravity Recovery And Climate Experiment Follow-on Mission

Explanation :

• The Gravity Recovery and Climate Experiment Follow-on (GRACE-FO) mission is a partnership between NASA and the German Research Centre for Geosciences (GFZ).
• Launched on 22 May 2018, GRACE-FO is a successor to the original GRACE mission, which began orbiting Earth on March 17, 2002
• The primary objective of the GRACE-FO Mission is to obtain precise global and high-resolution models for both the static and the time variable components of the Earth's gravity field.
• The GRACE missions measure variations in gravity over Earth's surface, producing a new map of the gravity field every 30 days.
• Thus, GRACE shows how the planet's gravity differs not only from one location to another, but also from one period of time to another.

Significance

• It will continue the work of tracking Earth's water movement to monitor changes in underground water storage, the amount of water in large lakes and rivers, soil moisture, ice sheets and glaciers, and sea level caused by the addition of water to the ocean.
• These discoveries provide a unique view of Earth's climate and have far-reaching benefits to society and the world's population.