BNZ LTER: Hourly photosynthetically active radiation (PAR), 1988 - Present
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PAR sensors measure solar radiation in the 400 to 700 nm waveband in microEinsteins per sq. m. per second. The average hourly reading is converted to microEinsteins per sq. m. per hour and summed over 24 hours to obtain daily Einsteins per sq. m. Sensors are removed at the end of September for annual calibrations and replaced back at the sites by the first of May each year.
创建时间：
2016-02-26
