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Rain measurement: Difference between revisions
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= Precipitation measurement and Cumulus = | = Precipitation measurement and Cumulus = | ||
Different weather stations report different rainfall observations, see [[Monthly_log_files]] for the parameters that Cumulus tracks. Most processing by Cumulus is based on the total rainfall count output by a weather station, see [[FAQ#My_station_invented_some_rain_that_didn.27t_really_occur.2C_and_I_want_to_set_it_to_zero_.28or_some_other_figure.29 | FAQ]] for more. | Different weather stations report different rainfall observations, see [[Monthly_log_files]] for the parameters that Cumulus tracks. Most processing by Cumulus is based on the total rainfall count output by a weather station, see [[FAQ#My_station_invented_some_rain_that_didn.27t_really_occur.2C_and_I_want_to_set_it_to_zero_.28or_some_other_figure.29 | FAQ]] for more. Cumulus [[cumulus.ini|supports]] two units (millimetres and inches). | ||
On the Cumulus '''View''' menu ''This month/period/year'' screens you can see (excludes current meteorological day): | On the Cumulus '''View''' menu ''This month/period/year'' screens you can see (excludes current meteorological day): | ||
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The threshold value which the daily rainfall has to equal or exceed for the day to be considered a 'rain day' is set in [[Cumulus.ini#Section:_Station | RainDayThreshold]] and has a default value of ''-1'' that means 0.2mm or 0.01in. Alternative thresholds can be used by specifying a number in the units your configuration uses. | The threshold value which the daily rainfall has to equal or exceed for the day to be considered a 'rain day' is set in [[Cumulus.ini#Section:_Station | RainDayThreshold]] and has a default value of ''-1'' that means 0.2mm or 0.01in. Alternative thresholds can be used by specifying a number in the units your configuration uses. | ||
= Types of Rain Gauge = | = Types of Rain Gauge = | ||
Types of rain gauges include graduated cylinders, weighing gauges, tipping bucket gauges, optical, and simple buried pit collectors. Each type has its advantages and disadvantages for collecting rain data. | Types of rain gauges include graduated cylinders, weighing gauges, tipping bucket gauges, optical, and simple buried pit collectors. Each type has its advantages and disadvantages for collecting rain data. | ||