Globe Aerosols

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Globe Aerosols

• Tartu
• October 2003

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Aerosols Measurements at Bernard Nieuwentijt
College in Amsterdam
Aerosols small particles in the atmosphere,
which reflect sunlight
Earth becomes Cooler!!
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Measurements from the ground with the Globe sun
photometer
Measurements from space with satellites Modis
and Sciamachy
Ground measurements to validate satellite data
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(No Transcript)
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GLOBE BN - MODIS
Absolute timediff 1 h 17 min Mean diff -0.09
(470 nm) -0.04 (660 nm)
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Wavelengths
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Aerosol Optical Thickness (AOT) AOT 0.0
Transmission 100 AOT 1.0 Transmission 37
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GLOBE Marken - MODIS
Measurements by S. Commandeur Absolute time
difference 1 h 29 min Mean difference -0.18
(470 nm) en 0.15 (660 nm)
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Ground measurements with sun photometer are very
good they help to validate and interpret
satellite data
Students can learn better by exchanging their
data and ideas through computer networks
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scientific researchers and universities