Rain measurement - Revision history

Sfws: add warning, written for legacy s/w

2021-06-27T11:24:30Z

add warning, written for legacy s/w

← Older revision		Revision as of 11:24, 27 June 2021
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			{{Version badge 1}}This page was written when only the legacy software was available. All cross-references are to other legacy pages, this page has not been updated for MX yet.


	Rain is measured using a rain gauge (also known as a udometer or a pluviometer [Pluviograph ] which gathers and measures the amount of liquid [http://en.wikipedia.org/wiki/Precipitation_(meteorology) precipitation] over a set period of time.		Rain is measured using a rain gauge (also known as a udometer or a pluviometer [Pluviograph ] which gathers and measures the amount of liquid [http://en.wikipedia.org/wiki/Precipitation_(meteorology) precipitation] over a set period of time.

Sfws: /* Making comparable with official sites */

2021-06-27T11:21:34Z

Making comparable with official sites

← Older revision		Revision as of 11:21, 27 June 2021
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	[http://www.bom.gov.au/climate/how/observations/rain-measure.shtml\| This Australian web site] ~~gives~~ ~~some~~ ~~ideas~~.		[http://www.bom.gov.au/climate/how/observations/rain-measure.shtml\| This Australian web site] used to explain more, but they have since reorganised their web site, can anybody identify the new link and update this page.

	[[Category:Terminology]]		[[Category:Terminology]]

Sfws: /* Making comparable with official sites */

2021-06-27T11:20:11Z

Making comparable with official sites

← Older revision		Revision as of 11:20, 27 June 2021
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	= Making comparable with official sites =		= Making comparable with official sites =

⚫	[http://www.bom.gov.au/climate/how/observations/rain-measure.shtml\| This ~~Austrailian~~ web site gives some ideas]
			It is important to note that Cumulus attributes rainfall to the date when the measuring period starts. [[meteorological day\|Some nations attribute rainfall]] to the day when the measuring period ends.


		⚫	[http://www.bom.gov.au/climate/how/observations/rain-measure.shtml\| This Australian web site] gives some ideas.

	[[Category:Terminology]]		[[Category:Terminology]]

Sfws: Text replacement - "Cumulus.ini" to "Cumulus.ini_(Cumulus_1)"

2021-03-22T16:31:39Z

Text replacement - "Cumulus.ini" to "Cumulus.ini_(Cumulus_1)"

← Older revision		Revision as of 16:31, 22 March 2021
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	== Rain day ==		== Rain day ==

	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_(Cumulus_1)#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.

	== Cumulus View Menu ==		== Cumulus View Menu ==
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	== Optical Rain Gauges ==		== Optical Rain Gauges ==
	#One design has a row of collection funnels. In an enclosed space below each funnel is a [http://en.wikipedia.org/wiki/Laser_diode laser diode] and a [http://en.wikipedia.org/wiki/Photodiode phototransistor detector]. When enough water has been collected to form a single drop it drips from the bottom of the funnel, falling into the laser beam's path. The detector is set at right angles to the path of the laser beam so that light scattered by the drop of water breaking the laser beam is detected as a sudden flash of light. The flashes from these photodetectors are then read and transmitted or recorded.		#One design has a row of collection funnels. In an enclosed space below each funnel is a [http://en.wikipedia.org/wiki/Laser_diode laser diode] and a [http://en.wikipedia.org/wiki/Photodiode phototransistor detector]. When enough water has been collected to form a single drop it drips from the bottom of the funnel, falling into the laser beam's path. The detector is set at right angles to the path of the laser beam so that light scattered by the drop of water breaking the laser beam is detected as a sudden flash of light. The flashes from these photodetectors are then read and transmitted or recorded.
	#The [http://www.rainsensors.com/\| Hydreon Optical Rain Sensor] - Model RG-11 - uses an infrared sensor to detect rainfall with high precision. Some car windscreens have a similar sensor to automatically start wipers. Cumulus supports the RG11, via parameters in [[Cumulus.~~ini~~#Hydreon_specific:]] that are set using a RG11 screen within the configuration menu. Use a USB to RS232 (serial) adapter on computers which don't have a COM port. See Cumulus ''help'' for more information. The rain sensor's 'normally open' relay contacts should be connected via a serial port (9 way connector)		#The [http://www.rainsensors.com/\| Hydreon Optical Rain Sensor] - Model RG-11 - uses an infrared sensor to detect rainfall with high precision. Some car windscreens have a similar sensor to automatically start wipers. Cumulus supports the RG11, via parameters in [[Cumulus.ini_(Cumulus_1)#Hydreon_specific:]] that are set using a RG11 screen within the configuration menu. Use a USB to RS232 (serial) adapter on computers which don't have a COM port. See Cumulus ''help'' for more information. The rain sensor's 'normally open' relay contacts should be connected via a serial port (9 way connector)
	#*either to the Data Set Ready (pin 4) and Data Terminal Ready (pin 6),		#*either to the Data Set Ready (pin 4) and Data Terminal Ready (pin 6),
	#*or to the Request To Send (pin 7) and Clear To Send (pin 8)].		#*or to the Request To Send (pin 7) and Clear To Send (pin 8)].

Sfws: /* Precipitation measurement and Cumulus */

2020-06-09T15:03:31Z

Precipitation measurement and Cumulus

← Older revision		Revision as of 15:03, 9 June 2020
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	= Precipitation measurement and Cumulus =		= Precipitation measurement and Cumulus =

⚫	~~Cumulus processes rainfall in one of two [[cumulus.ini\| units]] (millimetres and inches).~~ 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. The rainfall observations output by different weather stations varies, see [[Monthly_log_files]] for the parameters that Cumulus tracks. Cumulus can also read rainfall from a separate RG11 optical gauge.
			Cumulus processes rainfall in one of two [[cumulus.ini\| units]] (millimetres and inches).

		⚫	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.

			The rainfall observations output by different weather stations varies, see [[Standard_log_files]] for the parameters that Cumulus tracks. Cumulus can also read rainfall from a separate RG11 optical gauge.

	== Rain day ==		== Rain day ==

	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.

	== Cumulus View Menu ==		== Cumulus View Menu ==

			Cumulus 1 provides a number of ways to view derived rainfall.

	=== Highs and Lows ===		=== Highs and Lows ===

	On the Cumulus '''View''' ''Highs and lows'' screens you can see those of the following appropriate to the chosen period:		On the Cumulus '''View''' ''Highs and lows'' screens you can see those of the following appropriate to the chosen period:
	* Highest Hourly/Daily/Monthly Rainfall		* Highest Hourly/Daily/Monthly Rainfall
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	=== ''This month/period/year'' screens ===		=== ''This month/period/year'' screens ===

	A number of values are shown for rainfall, these are calculated by summing field 14 (total rain today) from relevant rows in [[dayfile.txt]] (so will exclude the current meteorological day):		A number of values are shown for rainfall, these are calculated by summing field 14 (total rain today) from relevant rows in [[dayfile.txt]] (so will exclude the current meteorological day):
	# Total rainfall		# Total rainfall
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	==[[Webtags]] report ==		==[[Webtags]] report ==

	* For current, last 24 hours, yesterday (<#rfallY>), and this month;		* For current, last 24 hours, yesterday (<#rfallY>), and this month;
	**totals (<#rfall>, <#r24hour>, <#rmonth> all include rainfall so far today)		**totals (<#rfall>, <#r24hour>, <#rmonth> all include rainfall so far today)

Sfws: /* Webtags report */ make clear the main screen also shows 'this season'

2013-12-12T14:16:22Z

Webtags report: make clear the main screen also shows 'this season'

← Older revision		Revision as of 14:16, 12 December 2013
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	==[[Webtags]] report ==		==[[Webtags]] report ==
	* For current, ~~today~~, yesterday, and this month; ~~totals (NB total rainfall this month webtag includes current meteorological day)~~		* For current, last 24 hours, yesterday (<#rfallY>), and this month;
			**totals (<#rfall>, <#r24hour>, <#rmonth> all include rainfall so far today)
	* Annual rainfall web tag reports total for ''rainfall season'' year i.e. starting month set on Configuration \| station screen \| Annual rainfall frame; to ~~see~~ ~~that~~ ~~figure~~ ~~use~~ ~~'View~~ ~~menu~~ \| This ~~period~~')		* Annual rainfall web tag <#ryear> reports total for ''rainfall season'' year i.e. starting month set on Configuration \| station screen \| Annual rainfall frame; includes rainfall so far today, same figure as shown for 'This year' on main Cumulus screen)
	* For today, yesterday, this month, this rainfall season, month-by-month, and all time; ~~hourly/daily rainfall highs, rain rate high~~		* For today, yesterday, this month, this rainfall season, month-by-month, and all time;
			** hourly rainfall highs and timestamp,
			** daily rainfall highs and timestamp,
			**rain rate high
	* Snow depth for current [[Weather_Diary#How_do_I_change_the_time_a_diary_day_begins.2Fends.3F\|day]]		* Snow depth for current [[Weather_Diary#How_do_I_change_the_time_a_diary_day_begins.2Fends.3F\|day]]
	* Longest wet period (count of consecutive days with rainfall above configured threshold)		* Longest wet period (count of consecutive days with rainfall above configured threshold)

Sfws: /* Highs and Lows */

2013-11-16T10:14:57Z

Highs and Lows

← Older revision		Revision as of 10:14, 16 November 2013
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	On the Cumulus '''View''' ''Highs and lows'' screens you can see those of the following appropriate to the chosen period:		On the Cumulus '''View''' ''Highs and lows'' screens you can see those of the following appropriate to the chosen period:
	* Highest Hourly/Daily/Monthly Rainfall		* Highest Hourly/Daily/Monthly Rainfall
	* High ~~rain~~ rate		* High [[#Rain_Rate\|rainfall rate]]
	* Longest wet period (count of consecutive days with rainfall above configured threshold)		* Longest wet period (count of consecutive days with rainfall above configured threshold)
	* Longest dry period (count of consecutive days with rainfall below configured threshold)		* Longest dry period (count of consecutive days with rainfall below configured threshold)
	~~These~~ ~~screens~~ ~~display the Highest or Longest extreme~~ values ~~for~~ ~~various rainfall categories; the same values are~~ available from [[Webtags]].		All of these values are also available from [[Webtags]].

	=== ''This month/period/year'' screens ===		=== ''This month/period/year'' screens ===
	A number of values are shown for rainfall, these are calculated by summing field 14 (total rain today) from relevant rows in [[dayfile.txt]] (so will exclude the current meteorological day):		A number of values are shown for rainfall, these are calculated by summing field 14 (total rain today) from relevant rows in [[dayfile.txt]] (so will exclude the current meteorological day):

Sfws: /* This month/period/year screens */ Correction and layout change

2013-11-16T10:09:06Z

This month/period/year screens: Correction and layout change

← Older revision		Revision as of 10:09, 16 November 2013
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	These screens display the Highest or Longest extreme values for various rainfall categories; the same values are available from [[Webtags]].		These screens display the Highest or Longest extreme values for various rainfall categories; the same values are available from [[Webtags]].
	=== ''This month/period/year'' screens ===		=== ''This month/period/year'' screens ===
	A number of values are shown for rainfall ~~(all~~ ~~include~~ ~~start~~ ~~day,~~ ~~but~~ ~~exclude~~ ~~end~~ ~~day~~ of ~~period selected~~), ~~these~~ ~~are~~ ~~calculated~~ ~~by reading the~~ [[dayfile.txt]]:		A number of values are shown for rainfall, these are calculated by summing field 14 (total rain today) from relevant rows in [[dayfile.txt]] (so will exclude the current meteorological day):
	* Total ~~for this (any) month~~		# Total rainfall
	* Total for this (any) ~~period~~ ~~you want (select start date included and end date excluded)~~		#* Total for this (any) month
	* Total for this (any ~~calendar~~) ~~year~~ is ~~shown~~ on ~~'This~~ ~~year'~~ ~~screen~~		#* Total for this (any) period you want (select start date and end date)
			#* Total for this (any calendar) year is shown on 'This year' screen
	* Wettest day (equivalent to 'Highest Daily Rainfall' parameters of webtags)		# Wettest day (equivalent to 'Highest Daily Rainfall' parameters of webtags)
	* High rainfall rate		# High [[#Rain_Rate\|rainfall rate]]
⚫	* ~~Rain~~ days (count of days with rainfall ~~above~~ configured threshold)
	* ~~Dry~~ days (count of days with rainfall ~~below~~ configured threshold)		# Rain days (count of days in period with rainfall above configured threshold)
		⚫	# Dry days (count of days in period with rainfall below configured threshold)
⚫	* Days with snow ~~falling~~
	* Days with snow ~~lying~~		# Days in period with snow falling (from [[Weather_Diary]])
		⚫	# Days in period with snow lying

	==[[Webtags]] report ==		==[[Webtags]] report ==

Sfws: /* Webtags report */ rainfall season

2013-11-14T14:55:33Z

Webtags report: rainfall season

← Older revision		Revision as of 14:55, 14 November 2013
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	* For current, today, yesterday, and this month; totals (NB total rainfall this month webtag includes current meteorological day)		* For current, today, yesterday, and this month; totals (NB total rainfall this month webtag includes current meteorological day)
	* Annual rainfall web tag reports total for ''rainfall season'' year i.e. starting month set on Configuration \| station screen \| Annual rainfall frame; to see that figure use 'View menu \| This period')		* Annual rainfall web tag reports total for ''rainfall season'' year i.e. starting month set on Configuration \| station screen \| Annual rainfall frame; to see that figure use 'View menu \| This period')
	* For today, yesterday, this month, this ~~year~~, month-by-month, and all time; hourly/daily rainfall highs, rain rate high		* For today, yesterday, this month, this rainfall season, month-by-month, and all time; hourly/daily rainfall highs, rain rate high
	* Snow depth for current [[Weather_Diary#How_do_I_change_the_time_a_diary_day_begins.2Fends.3F\|day]]		* Snow depth for current [[Weather_Diary#How_do_I_change_the_time_a_diary_day_begins.2Fends.3F\|day]]
	* Longest wet period (count of consecutive days with rainfall above configured threshold)		* Longest wet period (count of consecutive days with rainfall above configured threshold)

Sfws: /* This month/period/year screens */ added cross ref to dayfile.txt

2013-11-13T22:12:13Z

This month/period/year screens: added cross ref to dayfile.txt

← Older revision		Revision as of 22:12, 13 November 2013
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	These screens display the Highest or Longest extreme values for various rainfall categories; the same values are available from [[Webtags]].		These screens display the Highest or Longest extreme values for various rainfall categories; the same values are available from [[Webtags]].
	=== ''This month/period/year'' screens ===		=== ''This month/period/year'' screens ===
	A number of values are shown for rainfall (all include start day, but exclude end day of period selected):		A number of values are shown for rainfall (all include start day, but exclude end day of period selected), these are calculated by reading the [[dayfile.txt]]:
	* Total for this (any) month		* Total for this (any) month
	* Total for this (any) period you want (select start date included and end date excluded)		* Total for this (any) period you want (select start date included and end date excluded)
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	* Days with snow falling		* Days with snow falling
	* Days with snow lying		* Days with snow lying


	==[[Webtags]] report ==		==[[Webtags]] report ==