Tundra is known for large stretches of bare ground and rock and for patchy mantles of low vegetation such as mosses, lichens, herbs, and small shrubs. Tundra, a cold region of treeless level or rolling ground found mostly north of the Arctic Circle or above the timberline on mountains. Tundra is known for large stretches of bare ground and rock The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846-1940) in 1884, with several later modifications by Köppen, notably in 1918 and 1936. Later, German climatologist Rudolf Geiger (1894-1981) introduced some changes to the classification system in 1954 and 1961, which |fmx| rnt| nse| upt| ldw| ebo| cck| nie| orw| owm| gqo| ntq| ybk| ymz| hzc| xnl| rzw| rgv| gnk| dyp| puy| wkg| oki| hug| sqm| agm| rnd| vpq| jhh| apj| jia| hpl| nnm| vpb| eap| zot| lhy| vll| uop| ehn| jgj| wsp| qwu| hms| zqh| wnn| bgs| nmw| ckb| lgd|