Wrong wind speeds on AWEKAS

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Felix Maltzahn

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May 31, 2020, 7:28:04 PM5/31/20
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Hello again

I`ve seen that the windspeed on AWEKAS is not correct... :-(
Station (TFA Nexus TE923): 11 km/h
Wunderground: 11km/h
PWSWeather: 11km/h
AWEKAS: 3,2km/h

Any ideas?

Thanks a lot

WeeWx V.4.1.0

Tom Keffer

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May 31, 2020, 7:47:42 PM5/31/20
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I'm not aware of any issues.

If you set debug=2 in weewx.conf, the URL that is being sent to AWEKAS will be logged. Variables are separated by semicolons. Wind speed is the 9th.

-tk

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Graham Eddy

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May 31, 2020, 9:27:50 PM5/31/20
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3.2 m/s is about 11 km/h
____________
Graham Eddy

Felix Maltzahn

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Jun 1, 2020, 5:23:15 AM6/1/20
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@Tom
Ok, will do that soon...

@Tom&Graham

Yes! That`s it! All values are not in km/h. They are in km/h, but AWEKAS displayed them in m/s. But the format set on AWEKAS is km/h.
Take a look on my pages:



I think it has been since the update (look at the history data)



Am Montag, 1. Juni 2020 03:27:50 UTC+2 schrieb Graham Eddy:
3.2 m/s is about 11 km/h
____________
Graham Eddy
On 1 Jun 2020, at 9:28 am, Felix Maltzahn <felix....@gmail.com> wrote:

Hello again

I`ve seen that the windspeed on AWEKAS is not correct... :-(
Station (TFA Nexus TE923): 11 km/h
Wunderground: 11km/h
PWSWeather: 11km/h
AWEKAS: 3,2km/h

Any ideas?

Thanks a lot

WeeWx V.4.1.0


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Felix Maltzahn

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Jun 1, 2020, 5:50:29 AM6/1/20
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Now I have set debug=2 and found the AWEKAS URL in the log.
The values are calculated and sent in m/s, not in km/h!
Upload on WU and PWSWeather works fine...
Where can I change this?

Am Montag, 1. Juni 2020 01:47:42 UTC+2 schrieb Tom Keffer:
I'm not aware of any issues.

If you set debug=2 in weewx.conf, the URL that is being sent to AWEKAS will be logged. Variables are separated by semicolons. Wind speed is the 9th.

-tk

On Sun, May 31, 2020 at 4:28 PM Felix Maltzahn <felix....@gmail.com> wrote:
Hello again

I`ve seen that the windspeed on AWEKAS is not correct... :-(
Station (TFA Nexus TE923): 11 km/h
Wunderground: 11km/h
PWSWeather: 11km/h
AWEKAS: 3,2km/h

Any ideas?

Thanks a lot

WeeWx V.4.1.0

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gjr80

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Jun 1, 2020, 7:05:44 AM6/1/20
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Hmm, near as I can tell a merge around 15 July 2019 changed the unit system of the record used for AWEKAS posts from METRIC to METRICWX, thus changing posted windSpeed from km/h to m/s. Having a bit of trouble seeing.exactly why or what other effects there may be.

As for fixing it, it will require a modification to the code base.

Gary

Graham Eddy

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Jun 1, 2020, 8:04:02 AM6/1/20
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maybe put some variation of the following in bin/user/extensions.py (updates METRICWX, not just AWEKAS):
weewx.units.MetricWXUnits.prepend({
    'group_speed'       : 'km_per_hour',
})
g-eddy

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Tom Keffer

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Jun 1, 2020, 8:24:27 AM6/1/20
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I was probably trying to make sure rain got reported in mm, forgetting that switching from METRIC to METRICWX would also switch wind. 

Fixed in commit 4155d1d, to appear in V4.1.1, probably tonight.

-tk

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gjr80

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Jun 1, 2020, 8:31:20 AM6/1/20
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I’d really like to find that fella that measures his rain in cm, he has a lot to answer for :)

Gary

Felix Maltzahn

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Jun 1, 2020, 8:44:02 AM6/1/20
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Update? Sounds good :)

thx from Germany

Am Montag, 1. Juni 2020 14:24:27 UTC+2 schrieb Tom Keffer:
I was probably trying to make sure rain got reported in mm, forgetting that switching from METRIC to METRICWX would also switch wind. 

Fixed in commit 4155d1d, to appear in V4.1.1, probably tonight.

-tk

On Mon, Jun 1, 2020 at 4:05 AM gjr80 <gjrod...@gmail.com> wrote:
Hmm, near as I can tell a merge around 15 July 2019 changed the unit system of the record used for AWEKAS posts from METRIC to METRICWX, thus changing posted windSpeed from km/h to m/s. Having a bit of trouble seeing.exactly why or what other effects there may be.

As for fixing it, it will require a modification to the code base.

Gary

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Andrew Milner

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Jun 1, 2020, 10:36:32 AM6/1/20
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I don't think anyone measures rain in cm ......

Tom Keffer

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Jun 1, 2020, 10:50:19 AM6/1/20
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I don't think anyone measures rain in cm ......

Not true at all. I'm probably showing my bias as an earth scientist, but we only measured precip and evaporation in centimeters. Example map below, from Ray Schmitt, a friend and former colleague at the Woods Hole Oceanographic.

image.png

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Andrew Milner

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Jun 1, 2020, 1:01:36 PM6/1/20
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but that chart seems more to be a derived unit - how about when dealing with local or even regional weather reporting rather than global ocean contributions .......


On Monday, 1 June 2020 17:50:19 UTC+3, Tom Keffer wrote:
I don't think anyone measures rain in cm ......

Not true at all. I'm probably showing my bias as an earth scientist, but we only measured precip and evaporation in centimeters. Example map below, from Ray Schmitt, a friend and former colleague at the Woods Hole Oceanographic.

image.png
On Mon, Jun 1, 2020 at 7:36 AM Andrew Milner <andrew....@gmail.com> wrote:
I don't think anyone measures rain in cm ......



On Monday, 1 June 2020 15:31:20 UTC+3, gjr80 wrote:
I’d really like to find that fella that measures his rain in cm, he has a lot to answer for :)

Gary

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