Okay, the wind is done in with the pressure on the maps we've been playing with (They are the swirly bits coming off or going into the major pressure zones, btw). To get an accurate depiction of your rainfall, you have to take into account quite a few variables. A quote from the
Climate Cookbook:
Code:
Factor High precipitation Low precipitation
--------------------------------------------------------------------------------------------------
Pressure ITCZ, on or near the equator STHZ
Mountains Windward sides Leeward sides, in rain-shadow
Prevailing winds Onshore Offshore or parallel
Coastal currents Warm Cold, especially in low latitudes
Location West coasts subject to PF, and inland Interiors
What I did was make a numeric scale of relative rainfall (mine was 0 to 5) and go through and assign each major location a value. They all start at 2 (which is the median value). Then you go through and raise and lower values according to the chart quoted above. For example, a place on (or near) the ITCZ is going to go up by 1 while a location on (or near) the STHZ is going to down by one. Then I move on to Mountains, increasing numbers on the windward sides, and reducing numbers on the leeward sides. Only change a value by 1 on any single pass (Pressure, mountains, winds, etc). When you have done all the adjustments, normalize the values (don't let any values go above 5 or below 0, as such a thing doesn't exist) by simply moving anything above 5 down to 5 and anything below 0 up to 0. I then colored by numbers to create my two rainfall maps over in
my thread.
Maybe I should work this up into a tutorial? Any way, see if this helps.