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TRISHNA Mission
Context:
ISRO announced its collaboration with French space agency CNES for the upcoming TRISHNA mission on World Environment Day (5th June).
More on News:
- Agencies are developing a satellite to study the impacts of human-induced climate change during global heatwaves.
- ISRO is promoting the satellite as a significant advancement in remote-sensing technology.
- The proposed solutions could significantly enhance water and food security for policymakers, agro-industries, and farmers.
Key Highlights:
- Expected Launch: 2025 (exact date not announced)
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- Collaborating Agencies: The Indian Space Research Organisation (ISRO) and the CNES (Centre National d’Etudes Spatiales)
- Payloads:
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- Thermal Infra-Red (TIR) Payload: Provided by CNES, it has an infrared imaging sensor for high-resolution surface temperature mapping.
- Visible – Near Infra-Red – Short Wave Infra-Red (VNIR-SWIR) Payload: Developed by ISRO, it tracks biophysical and radiation variables through seven spectral bands.
- Mission Details:
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- It will operate in a sun-synchronous orbit at an altitude of 761 km.
- Spatial resolution: 57 meters for land and coastal areas, 1 km for oceanic and polar regions.
- Designed for a five-year mission life.
- Comparison with Other Missions: Similar to the NASA-ISRO Synthetic Aperture Radar Satellite (NISAR), aiding in monitoring climate change and Earth deformations.
- Global Impact: The data will contribute to global initiatives.
- Including GEOGLAM (Group on Earth Observations Global Agricultural Monitoring Initiative), the UN’s Sustainable Development Goals, and the Global Water Watch.
About TRISHNA:
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- Thermal Infra-Red Imaging Satellite for High-resolution Natural Resource Assessment mission is a collaborative effort.
- Objective:
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- It focuses on surface energy budgeting at regional to global scales.
- Addresses critical water and food security challenges related to human-induced climate change and efficient water resource management.
- Objectives:
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- Detailed monitoring of the energy and water budgets of the continental biosphere.
- Quantifying terrestrial water stress and water use efficiency.
- High-resolution observation of water quality and dynamics in coastal and inland waters.
- Comprehensive assessment of urban heat islands.
- Detection of thermal anomalies linked to volcanic activity and geothermal resources.
- Precise monitoring of snow-melt runoff and glacier dynamics.
- Valuable data on aerosol optical depth, atmospheric water vapor, and cloud cover.
- Applications:
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- Agricultural water management: Assessing irrigation water use, issuing water-saving advisories, and enhancing crop water productivity.
- Climate monitoring: Tracking indicators like droughts, permafrost changes, and evapotranspiration rates.
- Urban planning: Detailed urban heat island maps and heat alerts.
- Water quality monitoring: Detecting pollution in coastal and inland water bodies.
- Cryosphere monitoring: Evaluating snow cover and snow-melt patterns.
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