The Indian government, under the leadership of Prime Minister Shri Narendra Modi, has launched an ambitious initiative named PRITHVI. The scheme integrates five existing sub-schemes:

1. Atmosphere and Climate Research-Modelling Observing Systems and Services (ACROSS)
2. Ocean Services, Modelling Application, Resources and Technology (O-SMART)
3. Polar Science and Cryosphere Research (PACER)
4. Seismology and Geosciences (SAGE)
5. Research, Education, Training, and Outreach (REACHOUT).

What is the budget of the scheme which spans from 2021-26?