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Understanding Spectra through Earth Observation: Optics, Spectroscopy, and Laser Remote Sensing

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43 diapositives · 598 Views · Sep 27, 2014

This tutorial explores the fundamental properties of light, radiation, and their interaction with matter in the context of Earth observation. It covers key elements such as solar radiation effects, spectral measurement methods, and characteristics of electromagnetic waves. Special focus is given to laser remote sensing, including principles of lasers, beam propagation, and applications in Earth observation. The tutorial combines theoretical knowledge with practical insights, making it a vital resource for high school science education.

#understanding spectra through earth observation: optics, spectroscopy, and laser remote sensing #understanding spectra through earth observation: optics, spectroscopy, and laser remote sensing ppt #powerpoint #presentation
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  1. The Project ScienceEducation throughEarth Observationfor HighSchools Tutorials 6 & 9:Optics, Spectroscopy and Laser Remote Sensing Rainer Reuter, Christina Klose andHendrik Jan van der Woerd

  2. Understanding Spectra from the Earth Source: NASA

  3. Understanding Spectra from the Earth ... focuses on: • the fundamental properties of light and radiation • the interaction of light and matter

  4. Understanding Spectra from the Earth ... focuses on: • the fundamental properties of light and radiation • the interaction of light and matter ... covers the basic elements of earth observation from space: • solar radiation and its interaction with the atmosphere and the earth surface • the information content of spectra • the methods of spectral measurement

  5. Spectra from the Earth Light and radiation

  6. Spectra from the Earth Electromagnetic waves...

  7. Spectra from the Earth Electromagnetic waves... ...linear polarisation

  8. Spectra from the Earth Electromagnetic waves... ...circular polarisation

  9. Spectra from the Earth Light is better described as photons!

  10. Spectra from the Earth Light is better described as photons!

  11. Spectra from the Earth Light is better described as photons!

  12. Spectra from the Earth Colour vision through photons in 3 “channels”... ...is not a spectral measurement

  13. Spectra from the Earth Physical spectra: intensities over the wavelength

  14. Spectra from the Earth Example: The solar spectrum

  15. Spectra from the Earth The IR emission spectrum of the earth...

  16. Spectra from the Earth ...and the re-emission from the atmosphere

  17. Spectra from the Earth ...and the re-emission from the atmosphere this is thegreenhouse effect!

  18. Spectra from the Earth

  19. Spectra from the Earth

  20. Laser Remote Sensing

  21. Laser Remote Sensing ... focuses on: • the fundamental properties of light and radiation • the interaction of light and matter

  22. Laser Remote Sensing ... focuses on: • the fundamental properties of light and radiation • the interaction of light and matter ... but it emphasises on subjects such as: • principles of lasers and laser light generation • beam propagation through atmosphere and oceans • excitation of fluorescence and Raman scattering • applications in earth observation

  23. Laser Remote Sensing Schematic of a lidar

  24. Examples of lidar measurements Source: NASA

  25. Laser Remote Sensing Example of a lidar measurement

  26. Laser Remote Sensing Laser light is...

  27. Laser Remote Sensing Laser light is... ...monochromatic Laser line Incandescent lamp

  28. Laser Remote Sensing Laser light is... ...coherent and subject to interference effects

  29. Laser Remote Sensing Laser light is... ...coherent and subject to interference effects

  30. Laser Remote Sensing Hydrographic lidar

  31. Laser Remote Sensing Hydrographic lidar

  32. Laser Remote Sensing Oil is fluorescent

  33. Agrill Auk Brent crude oils 250 200 150 Intensity 100 50 0 300 400 500 600 700 wavelength /nm Laser Remote Sensing Oil is fluorescent

  34. Laser Remote Sensing Banknotes are also fluorescent

  35. Laser Remote Sensing Phytoplankton blooms are fluorescent Source: ESA True colour image Chlorophyll fluorescence simulation

  36. Laser Remote Sensing Fluorescence

  37. Laser Remote Sensing Fluorescence

  38. Laser Remote Sensing Fluorescence Phosphorescence

  39. Application of fluorescence: Oil spill quantification and classificationwith remote sensing Source: EARSeL eProceedings

  40. Laser Remote Sensing Principles of Rayleigh scattering

  41. Laser Remote Sensing Principles of Rayleigh and Raman scattering

  42. Laser Remote Sensing Principles of Rayleigh and Raman scattering

  43. Thank you!