2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
The ProjectScience Education through Earth Observation for High Schools
Tutorials 6 & 9:Optics, Spectroscopy and
Laser Remote Sensing
Rainer Reuter, Christina Klose andHendrik Jan van der Woerd
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Understanding Spectra from the EarthUnderstanding Spectra from the Earth
Source: NASA
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
... focuses on:... focuses on: the fundamental properties of light and radiationthe fundamental properties of light and radiation
the interaction of light and matterthe interaction of light and matter
Understanding Spectra from the EarthUnderstanding Spectra from the Earth
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
... focuses on:... focuses on: the fundamental properties of light and radiationthe fundamental properties of light and radiation
the interaction of light and matterthe interaction of light and matter
Understanding Spectra from the EarthUnderstanding Spectra from the Earth
... covers the basic elements of earth observation ... covers the basic elements of earth observation from space:from space:
solar radiation and its interaction with solar radiation and its interaction with the atmosphere and the earth surfacethe atmosphere and the earth surface
the information content of spectra the information content of spectra the methods of spectral measurementthe methods of spectral measurement
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
Light and radiation Light and radiation
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
Electromagnetic waves... Electromagnetic waves...
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
Electromagnetic waves... Electromagnetic waves...
...linear polarisation...linear polarisation
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
Electromagnetic waves... Electromagnetic waves...
...circular polarisation...circular polarisation
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
Light is better described Light is better described as photons! as photons!
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
Light is better described Light is better described as photons! as photons!
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
Light is better described Light is better described as photons! as photons!
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
Colour vision through photons in 3 “channels”... Colour vision through photons in 3 “channels”...
...is not a spectral measurement...is not a spectral measurement
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
Physical spectra: intensities over the wavelength Physical spectra: intensities over the wavelength
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
Example: The solar spectrum Example: The solar spectrum
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
The IR emission spectrum of the earth...The IR emission spectrum of the earth...
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
...and the re-emission from the atmosphere...and the re-emission from the atmosphere
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
...and the re-emission from the atmosphere...and the re-emission from the atmosphere
this is thegreenhouse effect!
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Spectra from the EarthSpectra from the Earth
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
... focuses on:... focuses on: the fundamental properties of light and radiationthe fundamental properties of light and radiation
the interaction of light and matterthe interaction of light and matter
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
... focuses on:... focuses on: the fundamental properties of light and radiationthe fundamental properties of light and radiation
the interaction of light and matterthe interaction of light and matter
Laser Remote SensingLaser Remote Sensing
... but it emphasises on subjects such as:... but it emphasises on subjects such as: principles of lasers and laser light generationprinciples of lasers and laser light generation beam propagation through atmosphere and oceansbeam propagation through atmosphere and oceans excitation of fluorescence and Raman scatteringexcitation of fluorescence and Raman scattering applications in earth observationapplications in earth observation
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Schematic of a lidar Schematic of a lidar
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Examples of lidar measurements Examples of lidar measurements
Source: NASA
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Example of a lidar measurement Example of a lidar measurement
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Laser light is...Laser light is...
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Laser light is...Laser light is...
Laser Remote SensingLaser Remote Sensing
...monochromatic...monochromatic
Lase
r lin
e
Inca
ndes
cent
lam
p
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Laser light is...Laser light is...
Laser Remote SensingLaser Remote Sensing
...coherent and...coherent and subject to subject to interference effects interference effects
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Laser light is...Laser light is...
Laser Remote SensingLaser Remote Sensing
...coherent and...coherent and subject to subject to interference effects interference effects
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Hydrographic lidar Hydrographic lidar
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Laser Remote SensingLaser Remote Sensing
Hydrographic lidar Hydrographic lidar
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Oil is fluorescentOil is fluorescent
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Oil is fluorescentOil is fluorescent
Laser Remote SensingLaser Remote Sensing
crude oils
700
0
50
100
150
200
250
wavelength /nm 300 400 500 600
AgrillAukBrent
Inte
nsity
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Banknotes are also fluorescentBanknotes are also fluorescent
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Phytoplankton blooms are fluorescentPhytoplankton blooms are fluorescent
Laser Remote SensingLaser Remote Sensing
True colour image Chlorophyll fluorescence simulation
Source: ESA
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Fluorescence Fluorescence
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Fluorescence Fluorescence
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Fluorescence Fluorescence
Phosphorescence Phosphorescence
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Application of Application of fluorescence:fluorescence:
Oil spill quantification Oil spill quantification and classificationand classification with remote sensingwith remote sensing
Source: EARSeL eProceedings
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Principles of Rayleigh scattering Principles of Rayleigh scattering
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Principles of Rayleigh and Raman scattering Principles of Rayleigh and Raman scattering
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Principles of Rayleigh and Raman scattering Principles of Rayleigh and Raman scattering
Laser Remote SensingLaser Remote Sensing
2nd EARSeL Workshop on Education and Training, Chania, 16-17 June 2009
Thank you!Thank you!
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