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Temperature (and humidity) measurement: Difference between revisions
Temperature (and humidity) measurement (view source)
Revision as of 07:33, 20 September 2017
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=How Cumulus software handles Temperature and Humidity= | =How Cumulus software handles Temperature and Humidity= | ||
The type of weather station used determines which parameters are reported by that station and which need to be calculated by Cumulus. If Cumulus 1 is using temperature in a calculation of parameters like dew-point or apparent temperature, then for most stations it will apply any calibration settings to the temperature read from the station before using it in that calculation. Similarly if humidity is read from the station, the calibrated value is used in subsequent calculations. See the support forum for further information e.g. for Instromet stations, Cumulus 1 calculates the relative humidity from the reported wet bulb, and dry bulb, temperatures, the uncalibrated values of temperature and (calculated) humidity are then used to calculate dew-point. | |||
== Logged values == | == Logged values == | ||
At the logging interval you set, Cumulus logs outdoor temperature and humidity in [[Monthly_log_files|separate files for each month]]. | At the logging interval you set, Cumulus logs outdoor temperature, dew-point, and relative humidity in [[Monthly_log_files|separate files for each month]]. | ||
Optionally, measurements from extra sensors can be logged in [[Extra_Sensor_Files| extra monthly files]]. | Optionally, measurements from extra sensors can be logged in [[Extra_Sensor_Files| extra monthly files]]. | ||
Optionally, indoor measurements can be logged in [[speciallog.txt|a special ongoing log]]. | Optionally, indoor measurements can be logged in [[speciallog.txt|a special ongoing log]]. | ||
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[http://en.wikipedia.org/wiki/Wet_bulb Wet bulb and Dew point] and [[#How_does_Cumulus_know_the_height_of_the_cloud_base.3F]] | [http://en.wikipedia.org/wiki/Wet_bulb Wet bulb and Dew point] and [[#How_does_Cumulus_know_the_height_of_the_cloud_base.3F]] | ||
The dewpoint calculation uses a third party library which uses the Davis dewpoint calculation. | |||
[[Humidex]] and [[Wind chill]] and [[Heat index]] and [[#My heat index/humidex/wind chill is the same as my temperature]] | [[Humidex]] and [[Wind chill]] and [[Heat index]] and [[#My heat index/humidex/wind chill is the same as my temperature]] | ||