EDUCE Project:

Inventory of QC procedures and

correction tools at all sites

& Tasks within WP8

Mario Blumthaler

Institute for Medical PhysicsUniversity Innsbruck

Krakow, 1.-3.10.2003

Tasks

• Inventory of QC procedures at the measurement sites

• Spectral radiance measurements and their interpretation

Sky radiance distribution, 10.08.2000, near Thessaloniki, Greece

Sky radiance measurements in the principal plane

Effect of inhomogenous surface albedo on diffuse UV sky radiance

M. Huber, M. Blumthaler, J. Schreder and J. Lenoble

submitted to JGR, under minor revision after review

0.94

0.96

0.98

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0 30 60 90 120SCATTERING ANGLE [°]

90 60 30 0 30 60 90OBSERVATION ZENITH ANGLE [°]

31° SZA45° SZA63° SZA

31° SZA45° SZA63° SZA

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Jungfraujoch (3576 m asl)

Model calculations carried out by J. Lenoble, Grenoble, F

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60 30 0 30 60 90OBSERVATION ZENITH ANGLE [°]

90 60 30 0 30 60 90 60 30 0 30 60 90

45° SZA63° SZA 31° SZA

Jungfraujoch (3576 m asl)

solid line: measurement (350 nm)shaded area: model with albedo 0.8dashed line : model with albedo 0.4

Jungfraujoch (3576 m asl)

view southwards view northwards