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    Home » TRISHNA: Advanced Satellite Mission for Monitoring Earth’s Resources

    TRISHNA: Advanced Satellite Mission for Monitoring Earth’s Resources

    Kanika SharmaBy Kanika SharmaJune 6, 2024 Industry News No Comments3 Mins Read
    Trishna

    The TRISHNA (Thermal Infra-Red Imaging Satellite for High-resolution Natural Resource Assessment) mission is a joint initiative by ISRO and CNES. This mission aims to provide high-resolution monitoring of Earth’s surface temperature, emissivity, biophysical variables, and radiation for energy budgeting on a regional to global scale. It focuses on addressing water and food security challenges, human-induced climate change impacts, and efficient water resource management through evapotranspiration monitoring.

    Primary Objectives

    TRISHNA’s main goals include:

    1. Detailed monitoring of the energy and water budgets of the continental biosphere to quantify terrestrial water stress and usage.
    2. High-resolution observation of water quality and dynamics in coastal and inland waters.

    Secondary Objectives

    The mission also aims to:

    • Assess urban heat islands.
    • Detect thermal anomalies related to volcanic activity and geothermal resources.
    • Monitor snow-melt runoff and glacier dynamics.
    • Provide data on aerosol optical depth, atmospheric water vapor, and cloud cover.

    Benefits of TRISHNA

    The TRISHNA mission offers extensive scientific and societal benefits, such as:

    • Agricultural Water Management: TRISHNA will help assess irrigation water use, advise on water savings, and enhance crop water productivity. It will support sustainable water management practices and improve micro-watershed management.
    • Climate Monitoring: The mission will track key indicators like droughts, permafrost changes, and evapotranspiration rates.
    • Urban Planning: Urban planners will benefit from detailed maps of urban heat islands and heat alerts.
    • Water Quality Monitoring: TRISHNA will detect pollution in coastal and inland water bodies and identify sub-marine groundwater discharge at coastal fringes.
    • Geothermal Resources and Cryosphere Monitoring: It will help detect sub-surface fires, assess geothermal resources, and evaluate snow cover and snow-melt patterns, aiding hydrological models.

    TRISHNA Satellite Details

    The TRISHNA satellite is equipped with two primary payloads:

    1. Thermal Infra-Red (TIR) Payload: Provided by CNES, this includes a four-channel long-wave infrared imaging sensor for high-resolution surface temperature and emissivity mapping.
    2. Visible – Near Infra-Red – Short Wave Infra-Red (VNIR-SWIR) Payload: Developed by ISRO, this has seven spectral bands designed for detailed mapping of surface reflectance and biophysical variables.

    The satellite will operate in a sun-synchronous orbit at an altitude of 761 km, with a local time of 12:30 PM at the equator. This orbit offers a spatial resolution of 57 meters for land and coastal areas and 1 km for oceanic and polar regions. The mission is designed for a five-year operational life.

    Global Contributions

    TRISHNA’s data will support several global initiatives, including:

    • GEOGLAM for agricultural monitoring.
    • The UN’s Sustainable Development Goals.
    • The Global Water Watch.

    The mission’s outputs will serve as Essential Agricultural Variables (EAVs) and Essential Climate Variables (ECVs) for the global community.

    Conclusion

    The TRISHNA mission represents a significant advancement in remote sensing technology. It addresses critical water and food security issues and provides essential data to support sustainable solutions for policymakers, watershed managers, agro-industries, and the farming community. With its high-resolution and high-repeat imaging capabilities, TRISHNA will enhance our understanding of Earth’s natural processes and support global efforts in climate change mitigation through optimised resource management.

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    • Kanika Sharma
      Kanika Sharma

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    Kanika Sharma
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