Page 1 of 1

Calculating rain values

Posted: Tue Apr 08, 2008 10:11 pm
by WebDog
I'm having a hard time to figure out what the different rain sensor data means, beeing a noob at weather nomenclature...
i.e. actual_rain0_rate_mm vs. last60m_rain0_rate_mm

and shouldn't rain rate be measured in amount/time i.e. mm/h???

And looking at longer time frames what does the rate means?? Should it not be the amout of rain for that period?

And how come that the meteohub do answer to meteograph.cgi?text=60m_rain0_rate_mm
not just meteograph.cgi?text=last60m_rain0_rate_mm is there a difference??

Re:Calculating rain values

Posted: Wed Apr 09, 2008 11:43 pm
by admin
WebDog wrote:I'm having a hard time to figure out what the different rain sensor data means, being a noob at weather nomenclature...
i.e. actual_rain0_rate_mm vs. last60m_rain0_rate_mm
"actual" is the projection of the weather station how much rain will fall in an hour, if it continues raining like at the moment. the time period of observation to make a guess varies from station to station. the stations do deliver this value.

"last60m" is the amount of rain that has been falling the last 60 minutes. This is computed by Meteohub.
and shouldn't rain rate be measured in amount/time i.e. mm/h???
yes, right for the "actual" value.
And looking at longer time frames what does the rate means?? Should it not be the amout of rain for that period?
yes, true for "last60m", "last24h", "day1", "month1", "year1"
And how come that the meteohub do answer to meteograph.cgi?text=60m_rain0_rate_mm
not just meteograph.cgi?text=last60m_rain0_rate_mm is there a difference??
Meteohub makes a substring match to a list that can be seen via "text=all". Not ideal but simple to realize for me ;-) and does the trick ;-)