The Project

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!