Cumulus Support

Cambium

mcrossley wrote: ↑Fri 09 Feb 2024 8:02 pm A bit like this? https://weather.wilmslowastro.com/graph ... .php#solar

(Switch on Solar %)

Whoa! Very cool! Good stuff.

Would love to see that in CMX one day.

Cambium

Is it correct to say the 65% I have means the sun is shining 65% above where the theoretical value is for that minute? No, it will count sunshine when the station value at or above 65% of the theoretical value. Ohhhh! Thank You! An idea for you is to add to CMX a line on that solar graph representi...

Cambium

From the graphs above your theoretical value looks like it is way below your sensor reading**, so you need to bump that up significantly. Bring the both transmission factors up until you are getting a theoretical value around 550(ish) at mid-day. Then worry about the threshold - leave it around 75%...

Cambium

Question... Need advice again.. Sorry. So I got clouds all morning with a dim poke here and there. And it's reading 1.2hrs of sun today. If the Theoretical Max at 10:30am was 388 adding 60% to that would mean the sun is shining at 620 W/m2? Is that correct? If so why is it detecting sunshine? Which ...

Cambium

Leaving this here for myself to keep note of.. Lucky to have a stretch of blue skies not 1 cloud. I'm using this Bash Emoji because I just realized I was changing the June Transmission instead of December. :bash: :roll: Can't do much about that morning tree interference but at least it's picking up ...

Cambium

Awesome discussion guys. Mark, That graph is so smooth! I have to play around with the numbers. I just went up there and took this pic. I had a feeling but now I realize the reason its erratic in the morning.. https://i.imgur.com/p0OuV77h.jpg Closeup of the sensor https://i.imgur.com/wvfTnUtl.jpg

Cambium

What you really need is a cloud free day to calibrate. If there are clouds around you will often get higher than normal readings at times - edge effect, and reflection. On a cloud free day you should get a nice bell curve from your station that matches the theoretical. If it is offset in time (and ...

Cambium

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? Interesting. I u...

Cambium

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. Thanks Mark... I fi...

Cambium

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) So noticing finally the sun is shining this morning but Cumulus still showing 0.0hrs. What setting should I adjust? Seem...

Cambium

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/doi/pdf/10.1029/200...

Cambium

yes and no - you can change it while it is running - but if the day file needs changes or even an entry, you have to do that manually, CMX won't go back. It only creates entries for the past day at midnight or (same situation) when backfilling from ecowitt.net and crossing midnight the header descr...

Cambium

@Cambium while running, CMX only updates only the current month logs and the .ini files => you can be at ease editing the older MMMYYlog.txt files with an editor, make sure they are in the proper sequence, no double entries etc. dayfile.txt will only be updated at midnight (respectively at the end ...

Cambium

Well that backfired. Everything had double the data.

I'm not sure now how to use the July-Nov Monthly log folders I had with the 5 minute updates to pick up on records and dayfile.

Let me try the Create Missing. Problem is it starts from 2011 each time

Cambium

Excellent! Thank You. I decided to delete all files and just drag the backup I had from July 2023. Now I'm waiting for everything since then. Haha. Thanks for the ini tip!! Thats what I needed to know. Good reminder for next time. :clap: the only thing is - the retention time at ecowitt.net 5-minut...

Cumulus Support

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