29 January 2017

East coast subtropical climates


Mots of the subtropical climates found at eastern coasts of continents are grouped under the humid subtropical Cf, whose rainfall distribution is rather uniform all year round. This is caused by a combination of frontal rain from extratropical cyclons (prevalent in west coast climates Cr, Cs) and convective rain from unstable maritime tropical (mT) air masses coming from the western flank of subtropical anticyclons.


When the latter prevails over the former, we've got a Monsoon or dry winter subtropical (aka Chinese) climate Cw, like the one found in East China and Japan, characterized by a strong rainfall maximum in summer and less rain in winter. Although they're quite different, this climate is often conflated with the humid subtropical Cf, to the point of applying the name "Chinese" to the latter.

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