I'm using the Köppen climate classification. The five major climate classifications are:
A - Moist Tropical Climates are known for their high temperatures year round and for their large amount of year round rain. - None on this map
B - Dry Climates are characterized by little rain and a huge daily temperature range. - The North East of the map comes under B although the temperature means it will be more like the steppes than sand dunes.
C - In Humid Middle Latitude Climates land/water differences play a large part. These climates have warm,dry summers and cool, wet winters. - Given the lattitude C will mostly be temperate forest.
D - Continental Climates can be found in the interior regions of large land masses. Total precipitation is not very high and seasonal temperatures vary widely. - Complicated but I have choosen to interprate the either grassland or boreal forest depending on the terrain.
E - Cold Climates describe this climate type perfectly. These climates are part of areas where permanent ice and tundra are always present. Only about four months of the year have above freezing temperatures. - Not much but the extreme south and island chain will be icebound during the winter.
Type 1 climates are from 0 - 30 degrees and type 2 60 - 90 degrees.
As always any comments and pointers gratefully received. Making this map has really refocused my mind on what should be where.
[EDIT] Actually i have enjoyed making this map so much I might go through and try and make a 'pretty' climate map before carrying on with the arty one.