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Negative and positive values of Solar radiation during night

asked 2016-01-06 11:57:49 -0600

Durr
103 ●1 ●3

updated 2020-01-20 13:36:16 -0600

__AmirRoth__

4446 ●5 ●17 http://bleedinggreenna...

I have some actual weather data that contains global solar radiation values. I have noticed that it has positive and negative values at night time, please see below. Should it be zero during night time or I am missing something?

P.S: The unit is wrong for global solar radiation.

Weather_filw

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answered 2016-01-07 09:26:55 -0600

Archmage

7185 ●3 ●11

It probably should be zero but it is normal to have some small (depending on what the units really are) noise in the sensor reading. If this data were used in EnergyPlus it would be ignored when the sun's calculated position is not actually above the horizon.

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Asked: 2016-01-06 11:57:49 -0600

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Last updated: Jan 07 '16

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Negative and positive values of Solar radiation during night edit