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 4019) - 03 April 2024
Legacy Cumulus 1 release 1.9.4 (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 4019) - 03 April 2024
Legacy Cumulus 1 release 1.9.4 (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
Solar/UV Info
Moderator: mcrossley
- mcrossley
- Posts: 12766
- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: Solar/UV Info
But in winter a sunny day would be much less hours wouldn't it? Personally I'd define it as a percentage of the possible sunshine hours in a day that are sunny.
- PaulMy
- Posts: 3849
- Joined: Sun 28 Sep 2008 11:54 pm
- Weather Station: Davis VP2 Plus 24-Hour FARS
- Operating System: Windows8 and Windows10
- Location: Komoka, ON Canada
- Contact:
Re: Solar/UV Info
The beteljuice/BCJK Annual Data scripts shows graphically the sunshine in comparison to maximum for the day (select Sunshine tab) http://www.komokaweather.com/cumulusmx/ ... hp?lang=enTrue.. I guess using 8hrs+ for a full sunny day looks like only 9 out of past 30 days.
The B-L Sunrecorder displayed graphs also based on time of year.
The Solar tab shows from May 2018 when the VP2 was replaced by a VP2 Plus with Solar and UV.
Enjoy,
Paul
VP2+
C1 www.komokaweather.com/komokaweather-ca
MX https://komokaweather.com/cumulusmx/index.htm /index.html /index.php
MX https://komokaweather.com/cumulusmxwll/index.htm /index.html /index.php
MX https:// komokaweather.com/cumulusmx4/index.htm
C1 www.komokaweather.com/komokaweather-ca
MX https://komokaweather.com/cumulusmx/index.htm /index.html /index.php
MX https://komokaweather.com/cumulusmxwll/index.htm /index.html /index.php
MX https:// komokaweather.com/cumulusmx4/index.htm
-
- Posts: 271
- Joined: Wed 03 Aug 2011 11:19 pm
- Weather Station: ProWeatherTP3000
- Operating System: Windows10
- Location: Coastal CT, USA
- Contact:
Re: Solar/UV Info
Very cool! So that spot in Canada has gotten almost double the amount of days since April 19rh with 8+hrs of sun than here at the CT coast.PaulMy wrote: ↑Fri 20 May 2022 5:09 pmThe beteljuice/BCJK Annual Data scripts shows graphically the sunshine in comparison to maximum for the day (select Sunshine tab) http://www.komokaweather.com/cumulusmx/ ... hp?lang=enTrue.. I guess using 8hrs+ for a full sunny day looks like only 9 out of past 30 days.
The B-L Sunrecorder displayed graphs also based on time of year.
The Solar tab shows from May 2018 when the VP2 was replaced by a VP2 Plus with Solar and UV.
Enjoy,
Paul
-
- Posts: 271
- Joined: Wed 03 Aug 2011 11:19 pm
- Weather Station: ProWeatherTP3000
- Operating System: Windows10
- Location: Coastal CT, USA
- Contact:
Re: Solar/UV Info
Anyone know how Cumulus calculates the sunshine hours from the Ecowitt station?
- mcrossley
- Posts: 12766
- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: Solar/UV Info
It's the same for all stations, the sunshine is deemed to be when the solar value exceeds both the threshold value and the percentage of theoretical value.
-
- Posts: 271
- Joined: Wed 03 Aug 2011 11:19 pm
- Weather Station: ProWeatherTP3000
- Operating System: Windows10
- Location: Coastal CT, USA
- Contact:
Re: Solar/UV Info
-Deleted
Last edited by Cambium on Tue 30 Jan 2024 4:56 pm, edited 1 time in total.
-
- Posts: 271
- Joined: Wed 03 Aug 2011 11:19 pm
- Weather Station: ProWeatherTP3000
- Operating System: Windows10
- Location: Coastal CT, USA
- Contact:
Re: Solar/UV Info
Can you elaborate on this? I'm trying to find my sunshine hours from missing data but Ecowitt doesn't list sunshine hours. So trying to figure out how Cumulus creates the sunshine hours data
Thank You
- Gyvate
- Posts: 295
- Joined: Wed 16 Dec 2020 2:14 pm
- Weather Station: GW1x00/WH2650WiFi/HP2553/GW2000
- Operating System: Win 11 (PC/RPi), Raspbian 11,WSL
- Location: Saarbrücken, Germany
- Contact:
Re: Solar/UV Info
look at Settings --> Station settings --> Solar
there the methods for calculation sunshine hours from the Wattage (W/m2) readings received from a console are shown.
You want to know the details of these methods, Google is your friend.
e.g. https://agupubs.onlinelibrary.wiley.com ... 06WR005055
http://www.ecy.wa.gov/programs/eap/models.html
the Ecowitt consoles do not provide sunshine hours - CMX calculates them from one of two models assuming that once a threshold of a percentage of theoretical maximum solar irradition is crossed, this means sunshine. The time (seconds, minutes) are accumulated.
Or, as I do it, CMX uses the input from my Blake-Larsen Sunrecorder which determines sunshine as the human eye would do. The software of the recorder adds the seconds of sunshine (again a threshold of an electrical current created by incoming sunlight is taken as reference) and provides an update of accumulated sunshine time every minute to CMX. in CMX today/yesterday (29-Jan/30-Jan-2024)that would then look like this: (whereas the above pictures are from 2023-09-11) as not everybody has such a device, approximation models exist - and they are used by CMX (you can choose one of them, see above) or use e.g. the Blake-Larsen SunRecorder which doesn't give an approximation but the equivalent what a human eye would perceive if the light hit the retina. The B-L SunRecorder simulates a human eye in the distinction if for it there is sunshine or not. Quite a smart piece ...
there the methods for calculation sunshine hours from the Wattage (W/m2) readings received from a console are shown.
You want to know the details of these methods, Google is your friend.
e.g. https://agupubs.onlinelibrary.wiley.com ... 06WR005055
http://www.ecy.wa.gov/programs/eap/models.html
the Ecowitt consoles do not provide sunshine hours - CMX calculates them from one of two models assuming that once a threshold of a percentage of theoretical maximum solar irradition is crossed, this means sunshine. The time (seconds, minutes) are accumulated.
Or, as I do it, CMX uses the input from my Blake-Larsen Sunrecorder which determines sunshine as the human eye would do. The software of the recorder adds the seconds of sunshine (again a threshold of an electrical current created by incoming sunlight is taken as reference) and provides an update of accumulated sunshine time every minute to CMX. in CMX today/yesterday (29-Jan/30-Jan-2024)that would then look like this: (whereas the above pictures are from 2023-09-11) as not everybody has such a device, approximation models exist - and they are used by CMX (you can choose one of them, see above) or use e.g. the Blake-Larsen SunRecorder which doesn't give an approximation but the equivalent what a human eye would perceive if the light hit the retina. The B-L SunRecorder simulates a human eye in the distinction if for it there is sunshine or not. Quite a smart piece ...
You do not have the required permissions to view the files attached to this post.
Meteotemplate http://meshka.eu/meteo/template
pwsDashboard http://meshka.eu/pwsWD
CumulusMX http://meshka.eu/CumulusMX
CUtils http://meshka.eu/CUtils
overview (more): http://meshka.eu
pwsDashboard http://meshka.eu/pwsWD
CumulusMX http://meshka.eu/CumulusMX
CUtils http://meshka.eu/CUtils
overview (more): http://meshka.eu
-
- Posts: 271
- Joined: Wed 03 Aug 2011 11:19 pm
- Weather Station: ProWeatherTP3000
- Operating System: Windows10
- Location: Coastal CT, USA
- Contact:
Re: Solar/UV Info
Interesting! Thank You! I can google Ryan Stolzenbach but you guys are smarter and can explain it in laymans terms plus Google might redirect someone to this thread.Gyvate wrote: ↑Tue 30 Jan 2024 5:40 pm look at Settings --> Station settings --> Solar
there the methods for calculation sunshine hours from the Wattage (W/m2) readings received from a console are shown.
You want to know the details of these methods, Google is your friend.
e.g. https://agupubs.onlinelibrary.wiley.com ... 06WR005055
http://www.ecy.wa.gov/programs/eap/models.html
the Ecowitt consoles do not provide sunshine hours - CMX calculates them from one of two models assuming that once a threshold of a percentage of theoretical maximum solar irradition is crossed, this means sunshine. The time (seconds, minutes) are accumulated. ...
"The percentage of the current theoretical solar value above which the sun should be considered to be shining (default = 75%)"
What happens if I raise that percentage to 90? Is it more sensitive and would capture sunlight hours more?
You do not have the required permissions to view the files attached to this post.
- Gyvate
- Posts: 295
- Joined: Wed 16 Dec 2020 2:14 pm
- Weather Station: GW1x00/WH2650WiFi/HP2553/GW2000
- Operating System: Win 11 (PC/RPi), Raspbian 11,WSL
- Location: Saarbrücken, Germany
- Contact:
Re: Solar/UV Info
no - it means that you will most likely get less sun hours as 90% is a higher threshold than 75% (unless the real sunshine equals anyway always 90% of the theoretically possible)
Meteotemplate http://meshka.eu/meteo/template
pwsDashboard http://meshka.eu/pwsWD
CumulusMX http://meshka.eu/CumulusMX
CUtils http://meshka.eu/CUtils
overview (more): http://meshka.eu
pwsDashboard http://meshka.eu/pwsWD
CumulusMX http://meshka.eu/CumulusMX
CUtils http://meshka.eu/CUtils
overview (more): http://meshka.eu
-
- Posts: 271
- Joined: Wed 03 Aug 2011 11:19 pm
- Weather Station: ProWeatherTP3000
- Operating System: Windows10
- Location: Coastal CT, USA
- Contact:
Re: Solar/UV Info
So noticing finally the sun is shining this morning but Cumulus still showing 0.0hrs. What setting should I adjust? Seems like its not sensitive enough?
Sun been shining for at least 30 minutes now. The station has been receiving direct sun too (Its on the roof)
- mcrossley
- Posts: 12766
- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: Solar/UV Info
You need to look at the recent solar graph and compare the value from your station with the theoretical max. Post the graph for today so we can see.
Calibration in mid winter is pretty tricky anyway, the solar values are so low. Ideally you still it on a clear day in mid summer.
Calibration in mid winter is pretty tricky anyway, the solar values are so low. Ideally you still it on a clear day in mid summer.
-
- Posts: 271
- Joined: Wed 03 Aug 2011 11:19 pm
- Weather Station: ProWeatherTP3000
- Operating System: Windows10
- Location: Coastal CT, USA
- Contact:
Re: Solar/UV Info
Thanks Mark... I figured winter has something to do with it. If there's a way to offset that I'm all ears.mcrossley wrote: ↑Sat 03 Feb 2024 2:09 pm You need to look at the recent solar graph and compare the value from your station with the theoretical max. Post the graph for today so we can see.
Calibration in mid winter is pretty tricky anyway, the solar values are so low. Ideally you still it on a clear day in mid summer.
Here is the chart. Sun still shining outside so its about 1.5hrs of sunshine this morning
Here are my settings.. I changed the threshhold to 70 and the minimum to 25 hoping it made a difference.
- mcrossley
- Posts: 12766
- Joined: Thu 07 Jan 2010 9:44 pm
- Weather Station: Davis VP2/WLL
- Operating System: Bullseye Lite rPi
- Location: Wilmslow, Cheshire, UK
- Contact:
Re: Solar/UV Info
OK, so it is looking way out. The theoretical value is up around 240 at the end, but your station is only reading 115 W/m2
I see your station has a light sensor (lux) rather than a solar sensor, so Cumulus MX will be converting lux to W/m2.
Which station type do you use in Cumulus?
I see your station has a light sensor (lux) rather than a solar sensor, so Cumulus MX will be converting lux to W/m2.
Which station type do you use in Cumulus?