Satellites Can See Invisible Lava Flows and Energetic Wildfires, However How? (Python) | by Mahyar Aboutalebi, Ph.D. 🎓 | Feb, 2024


Visualizing satellite tv for pc photos captured over volcanos and wildfires in numerous spectral bands

Sentinel-2 photos captured over a volcano and a wildfire visualized with totally different spectral bands by the writer
  1. 🌟 Introduction
  2. 🔍 Sentinel-2 (Spectral Bands)
  3. 🌐 Downloading Sentinel-2 Pictures
  4. ⚙️ Processing Sentinel-2 Pictures (Clipping and Resampling)
  5. 🌋 Visualization of Sentinel-2 Pictures (Volcano)
  6. 🔥 Visualization of Sentinel-2 Pictures (Wildfire)
  7. 📄 Conclusion
  8. 📚 References

🌟 Introduction

As you could know, our eyes can solely see objects within the seen area (the bands of blue, inexperienced, and purple). Nonetheless, when gentle hits an object and displays, it accommodates info in different spectral areas, similar to infrared. Infrared gentle can successfully penetrate and cross via dense gases, similar to smoke, offering a transparent view beneath the smoke. Nonetheless, Our eyes will not be in a position to see objects within the infrared area, in contrast to some animals like snakes that may see a portion of infrared of their imaginative and prescient. Over the last many years, there was important development within the growth of sensors for detecting infrared gentle. These sensors have been utilized in sensible purposes.

I’ve at all times been searching for a great instance for example how satellites can detect essential info within the infrared area, which is invisible to our bare eyes. Final week, I learn in regards to the Iceland volcano that had change into energetic for the third time since December 2023. It sparked an concept in my thoughts to examine the photographs captured by satellites over the volcano. I hoped to be fortunate sufficient to discover a clear satellite tv for pc picture of the smoke plume from the volcano, demonstrating how gentle scatters within the seen area whereas penetrating via the smoke within the infrared area to disclose lava flows.

I checked a few satellites, and guess what? There was one with the right timing! The volcano erupted on Thursday morning (Feb eighth), and the Sentinel-2 overpass occurred on Feb eighth round midday. I assumed this could possibly be an ideal instance to exhibit how…


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