[wxqc] Measuring Snow

Mark Wyman mark at markwyman.com
Wed Jan 4 15:25:15 EST 2006


	The only things I can think of is there is a hole in the glue,
allowing water to cascade down the side of the pipe and collect in the glue
joint, then drip through the hole adding to the total. 
	The most remote of ideas has to due with Ventura Effect, where air
blows over an orifice causing it to oscillate. The air oscillation could
bring in more droplets of water than would be seen otherwise. To stop the
oscillation would be tricky, and I am not sure how to accomplish this.
	Otherwise you may just be experiencing orography effects like you
suggest. 3 miles from me to the south gets about 25% more rain in the summer
than we do, and this last year, areas 5 miles to our west got 150% more. We
live in hills, but our proximity to the lakes causes a surprisingly huge
impact on rain quantity.
	The only way to really verify your setup is to set a manual
collector next to it and later compare the two, you cannot rely on the
precip readings of a neighbor 3 miles away to verify your readings.

	-Mark

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