G20 Satellite
Source: TH
Summary
- The Announcement: ISRO Chairman V. Narayanan confirmed that the G20 Satellite is targeted for launch in 2027.
- Indian Leadership: India is leading this collaborative mission to provide shared Earth observation data to all G20 member nations.
- Scientific Focus: The mission targets Climate Change (GHG patterns), Air Pollution (aerosol tracking), and Disaster Management (early warnings for floods/cyclones).
- Diplomatic Angle: This project is a centerpiece of India’s Space Diplomacy, using high-tech capabilities to foster international cooperation and sustainable development.
Space Diplomacy and Earth Observation
To understand the G20 Satellite, one must look at how space technology is transitioning from a tool of “national competition” to a tool of “global public good.”
1. What is an Earth Observation (EO) Satellite?
EO satellites are equipped with remote sensing technology. They don’t look “out” into space; they look “down” at Earth. They use various sensors (optical, infrared, and radar) to collect data on land use, ocean health, and atmospheric composition.
2. Space Diplomacy (Soft Power)
By leading this project, India follows the successful model of the South Asia Satellite (GSAT-9) launched in 2017.
- The Strategy: By providing free or shared data to other countries, India establishes itself as a “benevolent space power.”
- The Impact: It reduces the dependency of G20 nations on expensive private satellite data and creates a unified scientific database for the “Global South.”
3. Monitoring “Transboundary” Pollution
Pollution does not respect national borders. Smog or aerosol clouds in one country often drift into another. The G20 satellite’s ability to track transboundary pollution flows is critical for international environmental treaties and climate negotiations.
Key Mission Objectives
| Focus Area | Specific Capability |
| Atmospheric Science | Monitoring the concentration of Greenhouse Gases (GHG) like $CO_2$ and Methane. |
| Environmental Health | Mapping PM2.5 and PM10 levels and identifying urban “heat islands.” |
| Crisis Management | Providing real-time imagery for “Rapid Damage Assessment” during natural disasters. |
| Weather Forecasting | Improving the accuracy of “Numerical Weather Prediction” (NWP) models. |
Multiple Choice Questions (MCQs)
Q1. In which year is the proposed G20 Satellite expected to be launched by ISRO?
A) 2024
B) 2025
C) 2026
D) 2027
Q2. What is the primary role of an “Earth Observation” satellite like the G20 Satellite?
A) To search for life on Mars.
B) To provide internet connectivity to remote islands.
C) To monitor climate change, pollution, and weather patterns on Earth.
D) To study the surface of the Sun (Solar Mission).
Q3. The G20 Satellite is an example of which type of international strategy used by India?
A) Military Expansion
B) Technology/Space Diplomacy
C) Economic Sanctions
D) Cultural Isolation
Q4. Which of the following parameters will the G20 Satellite help track to assist in urban policy interventions?
A) Number of cars in a parking lot.
B) Aerosol concentrations and pollution hotspots.
C) The height of skyscrapers.
D) Underwater mineral deposits.
Q5. India’s leadership in the G20 Satellite project is modeled after which previous successful regional satellite initiative?
A) The Moon Mission (Chandrayaan)
B) The South Asia Satellite (GSAT-9)
C) The Mars Orbiter Mission (Mangalyaan)
D) The Indian Regional Navigation Satellite System (NavIC)
Answers:
Q1: D | Q2: C | Q3: B | Q4: B | Q5: B
