About reports...

[Andrea75]

Hi antoine, I would to know if in the future will be possibile to integrate the way to generate a NOAA report, similar this

http://www.andrea75.it/meteo/dati/noaa200810.txt

Thanks!!

[TiToine]

Is it a standard? the way the data is formatted.

[Andrea75]

Yes, it's standard report with a formatted text. Many software produced that. That I posted above is produced by WsWin.

[Pidou]

Yes WeatherLink produce the same

[wslangerak]

Also does Weather-Display

[Andrea75]

OK, next will be Graph Weather?

[TiToine]

Yes it will be the next

[Andrea75]

Yes it will be the next

Great Antoine! You are doing a very good job!

[TiToine]

I'm currently implementing this feature and it appears that header, body and footer are variant...

Example:
http://littleswitzerlandweather.info/da ... report.htm
http://www.hereford-weather.co.uk/uploa ... report.htm
http://www.andrea75.it/meteo/dati/noaa200810.txt

So I take the Andrea75 version, the more complete version. Don't know if there is a standard format for NOAA report...

[Pidou]

Hi Antoine,

If it can help you, you can have examples of NOAA reports generated by WeatherLink (Davis Vantage Pro 2+) here :
Month report => http://www.meteo-boisney.fr/NOAA/Septembre-2008.TXT
Year report => http://www.meteo-boisney.fr/NOAA/NOAAYR.TXT

[TiToine]

OK I will use the two templates from WeatherLink.

[TiToine]

Anyone knows how the Heat Deg Days and Cool Deg Days are calculated?

By definition:
HDD = Tmean - Tbase if Tmax > Tmean else 0
CDD = Tmean - Tbase if Tmin > Tmean else 0

Tbase = 18.3C or 65F

For http://www.meteo-boisney.fr/NOAA/Septembre-2008.TXT
It seems the calculation work with HDD, but not with CDD.

[jturlier]

Anyone knows how the Heat Deg Days and Cool Deg Days are calculated?

By definition:
HDD = Tmean - Tbase if Tmax > Tmean else 0
CDD = Tmean - Tbase if Tmin > Tmean else 0

Tbase = 18.3C or 65F

For http://www.meteo-boisney.fr/NOAA/Septembre-2008.TXT
It seems the calculation work with HDD, but not with CDD.

Hi Antoine,
CDD = TbaseCooling - Tmean if Tmin > Tmean else 0 // CDD are not negative
Usually, you should consider having a base for heating and a base for cooling (user definable), you do not cool if temperature is below 65°F, but you might heat.

Find herebelow the explanation given in VWS user's manual :

Degree Days Heating and Cooling
Because temperature plays an important part in the rate of development of plants and many pests, a measurement which takes into account the accumulation of heat with passing time is important to predict maturation. Degreedays provide a measure for calculating the effects of temperature on the development of plants or pests.
One degree-day is the amount of heat which accumulates when the temperature remains one degree above the threshold for one day.
One degree day is also the amount of heat which accumulates when the temperature is 24 degrees above the threshold for one hour.
Heating Threshold
The threshold for calculating degree-days heating.
Cooling Threshold
The threshold for calculating degree-days cooling.


I hope this will help you.
They do not apply only to agriculture, as you may also use those to predict your heating and cooling electricity bill !

[TiToine]

Oops sorry for my mistake. But it still does not work with http://www.meteo-boisney.fr/NOAA/Septembre-2008.TXT

Code : Tout sélectionner

                                      HEAT  COOL        AVG
    MEAN                              DEG   DEG         WIND                 DOM
DAY TEMP  HIGH   TIME   LOW    TIME   DAYS  DAYS  RAIN  SPEED HIGH   TIME    DIR
------------------------------------------------------------------------------------
 1  16.4  20.4   17:19  13.6    2:20   2.2   0.3   0.2   4.8  27.4   16:34     W

Heat Base:  18.3  Cool Base:  18.3  Method: Integration

16.4 - 18.3 = 0.3 ??

[jturlier]

Hi Antoine,
did you notice that you have deg day cooling values if maximum temperature is above 18.3.
In my opinion, the calculation is not based on the daily mean temperature, but on the means of temperatures below 18.3 and of temperatures above 18.3.
To make sure, It might be fine to have the data for one specific day, having heating and cooling degs, for example sept 10th.
The calculation method should be explained in the station doc. Pidou, don't you have it ?

Jean