Distribution of global precipitation in the eastern hemisphere

Distribution of global precip - West

global precipitation distribution is tied to the general circulation...
tropics are wet
- abundant moisture and ITCZ
subtropics are influenced by subtropical highs
- Bermuda vs Pacific Highs
mid latitudes
- wet due to polar front
- dry on lee-side of mountains
- wet on upslope side of mountains
polar regions tend to be dry
- little moisture
- polar high