Apogee SP-214-SS Panduan Pemilik - Halaman 14

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Spectral Errors for Shortwave Radiation Measurements with Apogee SP Series Pyranometers

Radiation Source (Error Calculated Relative to Sun, Clear Sky)

Sun (Clear Sky)

Sun (Cloudy Sky)

Reflected from Grass Canopy

Reflected from Deciduous Canopy

Reflected from Conifer Canopy

Reflected from Agricultural Soil

Reflected from Forest Soil

Reflected from Desert Soil

Reflected from Water

Reflected from Ice

Reflected from Snow

Spectral error for Apogee SP series

pyranometers as a function of solar

zenith angle, assuming calibration at

a zenith angle of 45°.

Spectral error for Apogee SP series

pyranometers as a function of

atmospheric air mass, assuming

calibration at an air mass of 1.5.

Error [%]

0.0

9.6

14.6

16.0

19.2

-12.1

-4.1

3.0

6.6

0.3

13.7