Welcome to the Cumulus Support forum.
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Cumulus MX V4 beta test release 4.0.0 (build 4018) - 28 March 2024
Legacy Cumulus 1 release v1.9.4 (build 1099) - 28 November 2014 (a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Cumulus MX V4 beta test release 4.0.0 (build 4018) - 28 March 2024
Legacy Cumulus 1 release v1.9.4 (build 1099) - 28 November 2014 (a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
Ground temp
- imike
- Posts: 36
- Joined: Tue 29 Dec 2009 3:13 pm
- Weather Station: w8681
- Operating System: win 7(weatherserver beta)
- Location: westhope hereford uk
- Contact:
Ground temp
how can you mesure the ground temp or what wqpment would you use
- steve
- Cumulus Author
- Posts: 26702
- Joined: Mon 02 Jun 2008 6:49 pm
- Weather Station: None
- Operating System: None
- Location: Vienne, France
- Contact:
Re: Ground temp
A grass thermometer, normally. And some types of weather station have these as optional extras.
Steve
- imike
- Posts: 36
- Joined: Tue 29 Dec 2009 3:13 pm
- Weather Station: w8681
- Operating System: win 7(weatherserver beta)
- Location: westhope hereford uk
- Contact:
Re: Ground temp
witch one would recomend and were yould it get it(grass)
- steve
- Cumulus Author
- Posts: 26702
- Joined: Mon 02 Jun 2008 6:49 pm
- Weather Station: None
- Operating System: None
- Location: Vienne, France
- Contact:
Re: Ground temp
I don't have much experience of standard meteorological kit; as long as you got one from a reputable manufacturer, they should all be pretty much the same. This is the sort of thing: http://www.fairmountweather.com/product ... t=4&pid=30
Steve
- imike
- Posts: 36
- Joined: Tue 29 Dec 2009 3:13 pm
- Weather Station: w8681
- Operating System: win 7(weatherserver beta)
- Location: westhope hereford uk
- Contact:
Re: Ground temp
thank you steve is there any electric ones
- daj
- Posts: 2041
- Joined: Tue 29 Jul 2008 8:00 pm
- Weather Station: WH1081
- Operating System: Pi & MX
- Location: SW Scotland
- Contact:
Re: Ground temp
I found a few Googling rather than 'Steveing' -- LOL
Could not see one that would link to a Fine Offset type station though -- I do not think these stations can take other readings
Could not see one that would link to a Fine Offset type station though -- I do not think these stations can take other readings
- steve
- Cumulus Author
- Posts: 26702
- Joined: Mon 02 Jun 2008 6:49 pm
- Weather Station: None
- Operating System: None
- Location: Vienne, France
- Contact:
Re: Ground temp
I'm not aware of any (other than the add-on probes to weather stations like the Davis VP2) but I guess they probably do exist.
Steve
- steve
- Cumulus Author
- Posts: 26702
- Joined: Mon 02 Jun 2008 6:49 pm
- Weather Station: None
- Operating System: None
- Location: Vienne, France
- Contact:
Re: Ground temp
I think it's just the Davis and Oregon Scientific stations that allow them. Maybe even some of the much-maligned (by me) La Crosse stations...daj wrote:Could not see one that would link to a Fine Offset type station though -- I do not think these stations can take other readings
Steve
- Repairman77
- Posts: 361
- Joined: Sat 17 Oct 2009 3:47 pm
- Weather Station: WH1080
- Operating System: XP pro SP3
- Location: Cambridgeshire UK
Re: Ground temp
imike,
If you only require remote readings; other than through the weather station, you coud use a system like the cheap remote indoor/outdoor digital thermometers, you can simply modify one of the remote units.
I did this to measure the water temperature in a pond filter box.
You simply take the unit apart, find the sensor (usually a small black thermistor), extent the wiring and encapsulate the thermistor in a small waterproof metal or plastic tube.
Incidentally the link Steve gave you to that site is for a 'grass' thermometer; was that what you wanted, or was it a 'ground' thermometer, actually inserted in the ground?
The same company make ground thermometers...
http://www.fairmountweather.com/product ... at=4&pid=5
The remote unit could be adapted to measure this if inserted at the end of a 12" metal tube.
Mike.
If you only require remote readings; other than through the weather station, you coud use a system like the cheap remote indoor/outdoor digital thermometers, you can simply modify one of the remote units.
I did this to measure the water temperature in a pond filter box.
You simply take the unit apart, find the sensor (usually a small black thermistor), extent the wiring and encapsulate the thermistor in a small waterproof metal or plastic tube.
Incidentally the link Steve gave you to that site is for a 'grass' thermometer; was that what you wanted, or was it a 'ground' thermometer, actually inserted in the ground?
The same company make ground thermometers...
http://www.fairmountweather.com/product ... at=4&pid=5
The remote unit could be adapted to measure this if inserted at the end of a 12" metal tube.
Mike.
Retired Radio and Electronics Engineer residing in Cambridgeshire, UK.
- steve
- Cumulus Author
- Posts: 26702
- Joined: Mon 02 Jun 2008 6:49 pm
- Weather Station: None
- Operating System: None
- Location: Vienne, France
- Contact:
Re: Ground temp
Good point - I had assumed 'grass' thermometer as these are used to measure temperatures at ground level. I'm used to the ones inserted into the ground being called 'earth' thermometers.Repairman77 wrote:Incidentally the link Steve gave you to that site is for a 'grass' thermometer; was that what you wanted, or was it a 'ground' thermometer, actually inserted in the ground?
Steve
-
- Posts: 1885
- Joined: Sat 21 Feb 2009 12:41 pm
- Weather Station: Nothing working ATM - making one
- Operating System: OS X, Linux Mint, Win7 & XP
- Location: Devon UK
Re: Ground temp
Been looking into this myself as the air temperature at 4 or 5 ft above ground is a fair bit higher than the ground temperature. There have been several days in the last fortnight when the ground has been freezing hard but air thermometers have shown a couple of degrees above freezing. So far the only thing I've found has been indoor/outdoor digital thermometers or very expensive temperature probes. Extending the cable to the external probe could be a problem if it uses a thermocouple as any change in metal will cause errors. I doubt thermistors would be accurate enough. If the measuring electronics could be put outdoors it might be possible to use a thermocouple type.
I'd be very interested in any other thoughts on this
I'd be very interested in any other thoughts on this
Gina
Sorry, no banner - weather station out of action. Hoping to be up and running with a new home-made one soon.
Sorry, no banner - weather station out of action. Hoping to be up and running with a new home-made one soon.
-
- Posts: 1885
- Joined: Sat 21 Feb 2009 12:41 pm
- Weather Station: Nothing working ATM - making one
- Operating System: OS X, Linux Mint, Win7 & XP
- Location: Devon UK
Re: Ground temp
Maplin do an indoor/outdoor digital thermometer http://www.maplin.co.uk/Module.aspx?ModuleNo=34932 It just might be possible to get inside this and bring out digital data to interface with a computer. They also do other similar thermometers.
Gina
Sorry, no banner - weather station out of action. Hoping to be up and running with a new home-made one soon.
Sorry, no banner - weather station out of action. Hoping to be up and running with a new home-made one soon.
-
- Posts: 162
- Joined: Sat 29 Nov 2008 10:42 pm
- Weather Station: WH1080 / Watson8681
- Location: Burnham Thorpe,N.Norfolk,UK
- Contact:
Re: Ground temp
This brings me to a point I have been discussing with Dave -Laindon Weather. Many of us set up our weather stations on poles or rooves - all of different heights. Shouldn't we try to get some uniformity with our sensors so that the data recorded is comparable.The met. Office suggests a height of 1.25 Metres above ground level (approx. 4 feet) for temperature sensors.I haven't worked out if height above sea level is another factor to take into account although I think it probably is.Hands up if your temperature sensor is 4 feet above ground level & also if you live at the top of Mount Everest! This however brings problems of numerous wires going from different parts of the weather station to different locations in the garden.
If this is in the wrong place - apologies.
Cheers,
Chris
If this is in the wrong place - apologies.
Cheers,
Chris
- dane
- Posts: 417
- Joined: Wed 10 Sep 2008 2:15 pm
- Weather Station: Rosenborg 68700
- Operating System: Win10 Ult., 64-bit, RaspberryPi
- Location: Gilleleje, Denmark
Re: Ground temp
My Danish Met. Office recommends 2 metres above ground level for temperature and humidity sensors, and 1.5 metres for rain sensors (and 10 metres for wind instruments).The met. Office suggests a height of 1.25 Metres above ground level (approx. 4 feet) for temperature sensors
So much for 'standards'
Ib
- beteljuice
- Posts: 3292
- Joined: Tue 09 Dec 2008 1:37 pm
- Weather Station: None !
- Operating System: W10 - Threadripper 16core, etc
- Location: Dudley, West Midlands, UK
Re: Ground temp
Oddly, UK MetO height standard is for the enclosure (expecting a big wooden box and a stick thermometer), so you will see variations in 'standard' height.
Again - the standards were brought in as windchill was beginning to be appreciated, and so was equal to average head height.
.... but, we've all been on a better diet since then ... and so it goes on
Temp sensor should be 1.5 => 1.7m above grass. (Sea Level is not a consideration unless you are floating on it)
Again - the standards were brought in as windchill was beginning to be appreciated, and so was equal to average head height.
.... but, we've all been on a better diet since then ... and so it goes on
Temp sensor should be 1.5 => 1.7m above grass. (Sea Level is not a consideration unless you are floating on it)
......................Imagine, what you will KNOW tomorrow !