RE: It's Snowing!!!

["Ward, David" <DAvid.Ward@xxxxxxxxxx>]

Snow measuring is tricky,  there are commercial devices
but I can't find the links at the mo. here arre a couple of pointers

http://www.geo.mtu.edu/department/classes/ge406/mptaylor/measure.html

http://www.brusag.ch/dld/Snow_Flyer_1.pdf

It seems ultrasound is the usual method for automatic as in the link above



What about a graduated pole/stick in view of your web cam?
At least then you can judge if the snow has drifted around your 'sensor'
stick and make sure that next doors white cat isn't sitting under the
sensor
:-S


Dave

-----Original Message-----
From: Stuart Grimshaw [mailto:stuart.grimshaw@xxxxxxx]
Sent: 22 February 2005 11:39
To: ukha_d@xxxxxxx
Subject: [ukha_d] It's Snowing!!!



I'm sitting here in the office, watching the snow, looking accross the
valley I can see the hills got more and more covered in snow. The
problem is I live up on those hills, and I could do with knowing just
how deep the snow is.

I've considered using a webcam, but it's a bit tricky to tell
the depth of snow.

I don't suppose anyone does this already do they?

Perhaps a moisture sensor would detect the rain/snow in conjunction
with a temp. sensor outdoors would tell you if it actually was snowing
or raining, but wouldn't give you any idea of depth.

Could you mount a sensor vertically, and as the snow mounted up the
resistance would drop? How would you avoid detecting a drift as a
massive amount of snow?

You couldn't use a normal rain guage either, unless you had a heater
element to melt the snow.

--
-S
http://www.makepovertyhistory.org/