One benefit of viewing nicely gridded data is that many subtle spatial patterns can be
resolved, as illustrated with the total precipitation data shown on this page. Click
through the 2018 monthly data to see how these features undergo subtle changes over time.
You will notice ...
Precipitation is concentrated in a narrow band that wraps around the equatorial
regions (sometimes making more than one complete circle around the planet).
This is the
Intertropical Convergence Zone
Precipitation is concentrated along numerous storm tracks along a SW-NE axis
in the Northern Hemisphere, but a NW-SE axis in the Southern Hemisphere, reflecting
the prevailing wind flow
In September, an unusually long NW-SE oriented storm track crosses the Atlantic. This
storm was Hurricane Florence, which cause massive flooding in the Souteastern