Response to New York Weather Chart, 2003
I feel that this graph could be improved by displaying the rainfall data as bars as well. Rainfall as measured by meteorologists is a discrete event, recorded as a total for each day to 9am, not a continuous one as inferred by the lines. It is hard to tell when the rain/snow fell. For example, if you look at December, on what day did the records actually occur? The first slope marked as a record covers about 4 days.
If you had a bar for each day it would be easy to see how many days it actually rained in a given month. A different coloured bar could then indicate whether or not the rain value was measured as rain or snow.
Can someone tell me what the conversion factor for snow to rain is? What is a foot of snow in inches of rain?
-- Andrew Nicholls (email)