2025 · Paper V · 10 marksFrequently asked

Discuss the role of remote sensing in tracking the dispersion of environmental pollutants. Analyze its implications for human health in affected regions, highlighting limitations and future improvements.

In short

Remote sensing tracks pollutant dispersion over areas ground stations cannot cover, spotting episodes like stubble burning and linking sources to respiratory and cardiovascular harm. Because cloud cover, overpass timing and weak ground-level accuracy limit it, NCAP-aligned improvement needs hybrid ground networks, indigenous satellite products and open data.

Model answer

Ghissu Editorial · Verified 4 Oct 2026

Introduction
Remote sensing plays a critical role in tracking pollutant dispersion, essential for public health management in regions like Andhra Pradesh with industrial and agricultural pollution challenges. Its ability to cover large and diverse landscapes helps address monitoring gaps in both urban and rural settings.
Role of Remote Sensing in Tracking Pollutant Dispersion
•

Detection of Episodic Pollution Events

Satellite monitoring of paddy and wheat stubble burning in Punjab and Haryana, which affects NCR, has informed dynamic policy responses; adapting this to Andhra Pradesh’s paddy residue can curb seasonal pollution spikes. Additionally, remote sensing helps identify industrial emission hotspots, facilitating targeted interventions.

Implications for Human Health
•

Increased Respiratory and Cardiovascular Risks

Exposure to PM2.5 and toxic gases raises chronic disease and mortality rates, especially near industrial corridors like Visakhapatnam in Andhra Pradesh. The rising death toll from air pollution nationally reflects similar local health burdens.

Limitations and Future Improvements
•

Technical Constraints and Data Gaps

Remote sensing struggles with cloud cover, limited detection hours, and cannot fully capture ground-level or indoor pollution; improving sensor technology and algorithms is vital. Cloud interference and timing issues can lead to underestimation of pollution events like stubble burning.

•

Capacity Building and Indigenous Technology

NCAP’s emphasis on indigenous satellite products and local expertise development will enhance data accuracy and policy relevance for states1 like Andhra Pradesh. Strengthening regional monitoring networks and integrating community data can improve responsiveness.

Conclusion
Integrating remote sensing with ground data and community engagement is key to effective pollution control and health protection. Enhancing technology and local capacity will enable more precise tracking and better policy outcomes in affected regions.

This model answer is indicative and the model can make mistakes; please verify key facts independently.

Hand-drawn diagram: Remote Sensing in Pollution Tracking. Mind map. Remote Sensing in Pollution Tracking: Wide-area monitoring; Episodic event detection; Data integration; Detection limitations
Diagram: Remote Sensing in Pollution Tracking

Practise this question

  1. 1Get the answer sheet

    Sized for this question.

  2. 2Write your answer

    Timed, by hand.

  3. 3Get it marked

    Your score and what to fix.

Share this questionWhatsAppTelegramXLinkedIn

This chapter in the exam

Pollution & solid waste; global issues; environmental legislation; disaster management policy; agricultural revolutions43 questions

Asked in 8 of 8 sittings since 2008

2008
3
2011
4
2012
9
2016
8
2017
6
2020
3
2023
5
2025
5

Most tested: Solid waste management and pollution-control legislation

All 43 questions, sorted by sub-topic, with model answers and practice.

Question from the official APPSC Group-I Mains 2025 paper. Answer written by Ghissu's engine and checked against our editorial standards. Found an error? Tell us and we correct it within 48 hours.

Ghissu

OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·