TRISHNA (Thermal Infra-Red Imaging Satellite for High-resolution Natural Resource Assessment) mission is a collaborative endeavor between ISRO and CNES (French Space Agency) to monitor surface temperature and water management at regional to global scale.

About TRISHNA Mission

• Objective: Detailed monitoring of energy and water budgets of continental biosphere for quantifying terrestrial water stress and water use and high-resolution observation of water quality and dynamics.
  • It will also help in a comprehensive assessment of urban heat islands, detection of thermal anomalies linked to volcanic activity and geothermal resources, etc.
• 2 Primary payloads
  • Thermal Infra-Red (TIR) payload: Provided by CNES, features a four-channel long-wave infrared imaging sensor.
  • Visible - Near Infra-Red - Short Wave Infra-Red (VNIR-SWIR) payload: Developed by ISRO, includes seven spectral bands designed for detailed mapping of surface reflectance.
• It will operate in a Sun-synchronous (SSO) orbit and is designed for a 5-year operational life.
  • SSO is a particular kind of polar orbit in which satellites are synchronized to always be in the same position relative to the Sun.
• Significance: Climate monitoring such as droughts, permafrost changes, and evapotranspiration rates; better urban planning with detailed urban heat island maps and heat alerts; etc.