Where are the wettest and driest places in this world and why

I have created a world map for a story I'm making. And it has been too long since I studied geography and geology. Assuming earth-like conditions, and a normal distribution of climate based on (approximate) lines of latitude (equator, tropics, arctics), what regions would have unique climates owing to atypical precipitation (very dry or very wet)? I'm assuming that forests are abundant otherwise.

I would most appreciate answers which can be explained in the context of our planet's climates and the underlying processes, so that it's easier to understand and extrapolate from.

Regarding scales: I don't know exactly how high the darkest bits should be, but assume Himalayan equivalents. Additionally the continents are Australian in size. The centre of the map is where the equator will be. Sorry for the lack of precise scale, I'll have to add that a bit later!

UPDATE: Given Kingledion's answer I have created a climate zone map, attempting to simplify the Koppen climate classifications.

Dark cyan being the coldest regions of pine forest, warming to light cyan maritime, yellow Mediterranean, dirty green savannah, bright green rain forest, orange scrub land, red desert.

posted over 8 years ago

inappropriateCode‭

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