That is part of it, but some of the early morning examples are up to 500%
different, although with very small values. In those cases I still suspect
there is extra scattered radiation from the surroundings, whether it be
trees or buildings.
I wonder also if the sensor type may change results sl
Very useful, Cameron.
It looks like the R-S curve is quite a bit lower, maybe as much as 20%
lower, at dawn and dusk, which seems to be when people are experiencing
values higher than maxSolarRad.
On Wed, Dec 23, 2020 at 1:19 AM Cameron D wrote:
> And then I forgot the attachment!
>
>
> On Wedn
And then I forgot the attachment!
On Wednesday, 23 December 2020 at 7:18:31 pm UTC+10 Cameron D wrote:
> I should have looked a bit more closely before posting! I used the solrad
> excel code from Uni Washington.
> I had adjusted my B&H parameters to represent quite clean air but forgot
> to
I should have looked a bit more closely before posting! I used the solrad
excel code from Uni Washington.
I had adjusted my B&H parameters to represent quite clean air but forgot to
match the Bras and RS code from default.
If I:
1. reset the BH turbidity params to default,
2. adjust the B
So the weewx python code says it is using the Ryan and Stolzenbach model,
which has a few approximations that don't work well in some cases, and it
looks like this is one of them.
I've attached a plot comparing 3 insolation models predicting global
horizontal irradiation.
Bird and Hulstrom 1991
"t...@tom.org" writes:
> kk, glad you corroborated my observations. I am no expert in this for sure.
> I am just tired of all of the comments I get from visitors to the website
> about how my readings exceed theoretical max. I could remove the max, but
> that doesn't seem fun.
I have added m
These are the mine measurements in the Netherlands today 21-12-2020.
Ton
Op maandag 21 december 2020 om 20:24:13 UTC+1 schreef kk44...@gmail.com:
> http://www.michler-fischer.privat.t-online.de/Bulletin68_83_94.pdf
> (from Switzerland, unfortunately in german)
>
> tke...@gmail.com schrieb am Mont
http://www.michler-fischer.privat.t-online.de/Bulletin68_83_94.pdf
(from Switzerland, unfortunately in german)
tke...@gmail.com schrieb am Montag, 21. Dezember 2020 um 19:53:14 UTC+1:
> Selection of the algorithm is in there --- just not documented. (I often
> do that with configurations that ar
Selection of the algorithm is in there --- just not documented. (I often do
that with configurations that are not quite settled.)
Here's the default. It will be documented in V4.3.
[StdWXCalculate]
[[WXXTypes]]
[[[maxSolarRad]]]
algorithm = rs
atc = 0.8
nfac = 2
Adjust as
First, I see 2 different formulas in WeeWX. Additionally there is a factor
that can be between 0.7 and 0.91. It may be an idea to adjust those values.
(But in the moment I found no place to put "atc" and "maxSolarRad_algo"
into weewx.conf.
tke...@gmail.com schrieb am Montag, 21. Dezember 2020 u
Well, if someone has a better source for calculating maximum solar
radiation, that matches the radiation spectrum of popular sensors, I'm all
ears.
On Mon, Dec 21, 2020 at 8:19 AM t...@tom.org wrote:
> kk, glad you corroborated my observations. I am no expert in this for
> sure. I am just tired
kk, glad you corroborated my observations. I am no expert in this for sure.
I am just tired of all of the comments I get from visitors to the website
about how my readings exceed theoretical max. I could remove the max, but
that doesn't seem fun.
I do not have the expertise to validate the way
I found that thread interesting, so I added the column "maxSolarRad", too.
[image: dayradiation.png]
Readings of the console and the WeatherLinkLive device are quite the same.
And the readings of "radiation" are higher than "maxSolarRad". The values I
upload to the local weather network are wel
Greg Troxel writes:
> Can someone share how to add maxSolarRad (when it is in the db) to the
> graphs for the traditional skin? Can I graph radiation, max (observed),
> and theory all at once, having three?
The answer is to just add it and label it; it comes out in green after
radiation in blu
Can someone share how to add maxSolarRad (when it is in the db) to the
graphs for the traditional skin? Can I graph radiation, max (observed),
and theory all at once, having three?
I think the answer is the same for seasons and traditional.
I only just today updated to 4.2.0 (well, git master f
I had a thought about this last night.
There are two entirely separable questions. One is whether the
maxSolarRad value is correct, and the other is what your sensor is
measuring. I think the "is the max correct" can be answered (and should
be) without considering your data at all.
First, I th
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