GEOG 1 Lecture Notes - Lecture 20: Rain Shadow, Köppen Climate Classification, Northern Hemisphere
Document Summary
With a,c or d climates, it denotes the seasonality of precipitation. With b climates, the second letter denotes whether. Designates the length of seasons or other parameters. Always warm with the coldest month mean temperature over 18 c. Influenced by migration of the inter-tropical convergence zone (ictz) - a belt of low pressure which circles the earth generally near the equator where the trade winds of the. Mild winters with the coldest month mean temperature under 18 c but over 0 c. Variations are relative to when precipitation is present. Cold winters with the coldest month mean temperature under 0 c. Tundra et - warmest month has an average temperature between 0 c and 10 c. Icecap ef - all twelve months have average temperatures below 0 c. Koppen type b - semi desert and dryland. These climates are characterized by actual precipitation amounts less than a threshold value set to equal to the potential evapotranspiration.
