Rain Rate for Fine Offset - Steve

MickinMoulden · Post by **MickinMoulden** » Tue 28 Feb 2012 2:50 pm

G'day Steve, I know we had this chat a loooong time ago, but I wanted to know something that just occured to me. The formula that Cumulus uses to work out the rain rate for Fine Offset models, will the modification (assuming correct) of the rain gauge to 0.1mm tips (calibration of 0.3333333) lower the figure for rain rate? I didn't think it would mater, but just wanted to check. I'm having it bucket down today and only reach half of my record. Shall I put in a request re:new rain rate calculations for Fine Offset? (you had mentioned you had worked out how to do this).
Thanks Steve.

Post by **steve** » Tue 28 Feb 2012 3:05 pm

MickinMoulden wrote:G'day Steve, I know we had this chat a loooong time ago, but I wanted to know something that just occured to me. The formula that Cumulus uses to work out the rain rate for Fine Offset models, will the modification (assuming correct) of the rain gauge to 0.1mm tips (calibration of 0.3333333) lower the figure for rain rate?

It won't make any difference, because the amount of rain recorded for any given period should be exactly the same, assuming the correct calibration figure is entered for the modified size of rain collector, and assuming there isn't a bug in the code.

Shall I put in a request re:new rain rate calculations for Fine Offset? (you had mentioned you had worked out how to do this).

I wrote the code a long time ago, and it worked. But there were some situations at start up when the calculation gave silly results, so I had to take it out again. At some point I'll look at it again.

hometlc · Post by **hometlc** » Wed 29 Feb 2012 9:07 pm

I am using that Ambient Weather WS2080 that uses the Fine Offset configuration and I am getting silly rain results as well. I am not sure what to do.

Post by **steve** » Wed 29 Feb 2012 10:36 pm

hometlc wrote:I am using that Ambient Weather WS2080 that uses the Fine Offset configuration and I am getting silly rain results as well. I am not sure what to do.

It would be better to start a new thread for your problem and post some information about what exactly you are seeing and why you think the data is wrong.

AllyCat · Post by **AllyCat** » Thu 01 Mar 2012 10:51 am

Hi,

But first ensure that the rain gauge is firmly located (NOT on a flexing mast), read the FAQs and search the forum for "spiders", etc..

Cheers, Alan.

Cumulus Support

Rain Rate for Fine Offset - Steve

Rain Rate for Fine Offset - Steve

Re: Rain Rate for Fine Offset - Steve

Re: Rain Rate for Fine Offset - Steve

Re: Rain Rate for Fine Offset - Steve

Re: Rain Rate for Fine Offset - Steve