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Old 23-11-2019, 05:11 PM
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peter_4059 (Peter)
Big Scopes are Cool

peter_4059 is offline
Join Date: Jun 2007
Location: Brisbane
Posts: 4,103
More experimentation this week. I've been researching cloud models and came across a paper that compares a number of models that predict sky temperature for clear and cloudy skies. Most of the cloud based models factor in air moisture content either as dew point or vapour pressure, something I didn't have in my home grown model.

I've been busy trying out the various theoretical models this week and have settled on a couple that seemed to fit my data reasonably well. I've now added the necessary code to my WeatherBox app. I also decided to add a more accurate relative humidity sensor to my arduino project since this is one of the key variables in predicting cloud and the DHT11 sensors don't have a great reputation for accuracy.

It's clear at the moment but supposedly getting cloudy tonight so I'm looking forward to see how the new model goes.
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