Directions: Read the passage carefully and answer the questions that follow.
Isro, which has been planning a joint satellite called “Trishna” with the French National Centre for Space Studies (CNES) for several years, on Wednesday spelt out some details about the mission, but did not give out a specific timeline.
The Thermal Infra-Red Imaging Satellite for High-resolution Natural Resource Assessment or Trishna mission will provide high spatial and temporal resolution monitoring of Earth's surface temperature, emissivity, and biophysical variables, focusing on addressing water and food security challenges in the face of climate change.
The primary objectives of the mission include detailed monitoring of the energy and water budgets of Earth’s surface, high-resolution observation of water quality and dynamics, and assessment of urban heat islands, Isro said.
It added that the satellite will also detect thermal anomalies linked to volcanic activity and geothermal resources, and monitor snow-melt runoff and glacier dynamics.
“Equipped with a Thermal Infra-Red (TIR) payload from CNES and a Visible - Near Infra-Red - ShortWave Infra-Red (VNIR-SWIR) payload from Isro, Trishna will operate in a sun-synchronous orbit at an altitude of 761 km. The mission is designed for a 5-year operational life and will provide data with a spatial resolution of 57m for land and coastal areas and 1km for oceanic and polar regions,” Isro said.
Isro added that Trishna’s data will contribute to several global initiatives, such as GEOGLAM (Group on Earth Observations Global Agricultural Monitoring) for agricultural monitoring, UN’s Sustainable Development Goals, and the Global Water Watch.
The mission’s outputs will serve as Essential Agricultural Variables (EAVs) and Essential Climate Variables (ECVs) for the global community, Isro said.
[Excerpt from Economic Times “Indian-French TRISHNA Satellite Targets Climate Change Impacts” Dated 07/06/24]
Q1: What is the main objective of the TRISHNA satellite mission?
(a) To monitor urbanization trends
(b) To study volcanic eruptions
(c) To assess environmental and climate factors
(d) To track space debris
Ans: (c) To assess environmental and climate factors
Sol: The main goal of the TRISHNA satellite mission is to simplify the Earth’s energy and water processes by giving accurate measurements of various environmental and climate factors.
Q2: When is the TRISHNA satellite set to be launched?
(a) 2022
(b) 2024
(c) 2026
(d) 2028
Ans: (c) 2026
Sol: The TRISHNA satellite is set to be launched in 2026.
Q3: What type of orbit will the TRISHNA satellite operate from?
(a) Polar orbit
(b) Geostationary orbit
(c) Heliocentric orbit
(d) Sun-synchronous orbit
Ans: (d) Sun-synchronous orbit
Sol: The TRISHNA satellite will work from a sun-synchronous orbit 761 km above Earth.
Q4: Which space agencies are collaborating on the TRISHNA satellite mission?
(a) ISRO and NASA
(b) ISRO and ESA
(c) ISRO and CNES
(d) ISRO and Roscosmos
Ans: (c) ISRO and CNES
Sol: The Indian Space Research Organization (ISRO) and the French Space Agency (CNES) are collaborating on the TRISHNA satellite mission.
Q5: What are the two main payloads of the TRISHNA satellite?
(a) Visible Light Sensor and Radar Imaging
(b) Thermal Infra-Red Sensor and Radar Imaging
(c) Thermal Infra-Red Sensor and Visible, Near Infra-Red, and Short Wave Infra-Red Sensor
(d) Thermal Infra-Red Sensor and Ultraviolet Sensor
Ans: (c) Thermal Infra-Red Sensor and Visible, Near Infra-Red, and Short Wave Infra-Red Sensor
Sol: The TRISHNA satellite will have two main payloads: a Thermal Infra-Red (TIR) sensor from CNES and a Visible, Near Infra-Red, and Short Wave Infra-Red (VNIR-SWIR) sensor made by ISRO.
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