Geoscience Reference
In-Depth Information
Annual Precipitation (mm)
200 400 600 900 1200 1900 2400
Figure 10.19
Mean annual precipitation (mm) over North America determined on a 25-km grid as a function of location and elevation.
Based on data from 8000 weather stations for 1951 to 1980. Values in the Arctic underestimate the true totals by 30 to 50 per cent
due to problems in recording snowfall accurately with precipitation gauges.
Source
: From Thompson
et al
. (1999). Courtesy of the US Geological Survey.
