The Space Agency ISRO recently announced a satellite mission, TRISHNA. This TRISHNA mission is a joint infrared earth observation satellite mission between India and France. 

About TRISHNA Mission

TRISHNA  refers to Thermal Infra-Red Imaging Satellite for High-Resolution Natural Resource Assessment.

• Objectives: The Primary Goal of TRISHNA mission is to monitor surface temperature and water management globally.
  • It will address extreme heat issues in India and Europe.
• Launch Details
  • Tentative Launch: 2025
  • Mission Lifespan: 5 years
• Features: There are two primary payloads in satellites. 
  • The Thermal Infra-Red (TIR) payload 
    • It will be provided by the French space agency CNES
    • The TIR payload will feature a four-channel long-wavelength infrared imaging sensor for studying high-resolution surface temperatures.
    • It will also map the heat radiated back from land in different regions.
  • The Visible Near Infrared-Red Short Wave Infrared-Red (VNIR-SWIR) payload 
    • It will be developed by ISRO
    • The VNIR-SWIR payload will map the reflectivity (albedo) of the Earth’s surface across seven bands.
    • This mapping will measure the amount of heat reflecting off the Earth’s surface.
    • It will also calculate various biophysical and radiation budget variables.

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Benefits of TRISHNA Mission

• Improved Water Management:
  • TRISHNA mission will provide data on evapotranspiration.
    • Evapotranspiration Monitoring: Includes soil evaporation and water transpiration from plants.
      • It helps monitor agricultural water use and maintain soil moisture levels during droughts.
      • It also provides vital data to manage the increasing droughts affecting Indian farmers.
  • Study of water presence: It will also study water presence and concentration, including melting glaciers, to improve water resource management globally.
• Enhanced Climate Monitoring:
  • The mission will track thermal anomalies, surface energy balance, and urban heat islands to understand the impact of climate change.
    • It will study aerosols, water vapour, and cloud cover to improve our understanding of atmospheric processes.
• Sustainable Practices Policies:
  • The data will be used to develop new policies for sustainable water management by watershed managers, agro-industries, and farmers.
  • The high-resolution, high-repeat imaging will improve our understanding of Earth’s natural processes to aid in global climate change mitigation efforts.
• Advancement in Remote Sensing Technology:
  • TRISHNA is expected to be a significant advancement in remote sensing technology, which is crucial for monitoring Earth from space during extreme weather events.

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Global Impact of the Trishna Mission

• Contribution to Sustainable Development Goals (SDGs)
  • Water Scarcity and Management: Addresses issues related to water scarcity and management (SDG 6).
  • Climate Action: Supports initiatives for climate action (SDG 13).
• International Cooperation and Knowledge Transfer
  • Strengthening Ties: Enhances cooperation between participating nations.
  • Expertise Exchange: Promotes the exchange of expertise in space technology.
  • Capacity Building: Facilitates capacity building in space technology among the involved countries.

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