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
1.00
1.02
1.04
1.06
0.92
0.94
0.96
0.98
1.00
1.02
1.04
1.06
0 30 60 90 120SCATTERING ANGLE [°]
90 60 30 0 30 60 90OBSERVATION ZENITH ANGLE [°]
31° SZA45° SZA63° SZA
31° SZA45° SZA63° SZA
PO
LA
RIS
AT
ION
CO
RR
EC
TIO
N F
AC
TO
R
Jungfraujoch (3576 m asl)
Model calculations carried out by J. Lenoble, Grenoble, F
50
100
200
300
[re
l ati v
e u
nits
]R
AD
IAN
CE
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