幸运飞艇计划

• GLOBAL RADIATION, i.e. total shortwave radiation from the sun (direct radiation + diffuse radiation scattered from the sky) on a horizontal surface, is measured by a .
• DIFFUSE (SKY) RADIATION, i.e. total shortwave diffuse radiation from the sun (scattered from the sky) on a horizontal surface, is also measured by a . By measurements of diffuse radiation, the direct solar radiation d off by the use of a circular disc with diameter 6 cm mounted on a 30 cm long moving arm.
• DIRECT NORMAL INCOMING RADIATION, which is the direct solar radiation on a surface normal to the solar beam, is measured by at . The instrument is mounted on a tracking device, , following the sun.
• ULTRAVIOLET RADIATION on a horizontal surface is measured with a which has a response in the wavelength region 290 - 385 nm.
• (Erythemal) UV-B RADIATION, which is the UV-radiation in the UV-B region (280 - 320 nm), weighted with the response function of听 the human skin, is measured in MED (MinimumErythemal Dose) by a .
• DOWNWARD LONGWAVE ATMOSPHERIC RADIATION is estimated from longwave radiation measured by a .
• EFFECTIVE OUTGOING LONGWAVE RADIATION from a "black" surface at the air temperature, is also estimated from longwave radiation measured by a .
• SUNSHINE DURATION is measured with a registered according to the WMO regulations.
• SUNSHINE DURATION is also estimated as the number of minutes with irradiances above 120 Wm^-2 (measurements each 20. second) from measurements by the . (Missing registrations by the the Campbell-Stoke instrument are, in few given occasions replaced by NIP-durations above 200 Wm^-2)

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• The Datalogger system consists of a Fluke Helios I Computer Front End (CFE), a PC and a line printer.