Yanayin tarin abubuwa ya canza a tsayin iyakar iyakar ciyarwa a Rasha daga 20 g / cm2 akan Severnaya Zemlya zuwa 400 g / cm2 da ƙari akan Tsibirin Kronotsky, a ƙarshen yamma da Altai da kan gangaren kudu na yammacin Caucasus. Idan aka yi la'akari da lissafi na Atlas of Snow and Ice Resources, matsakaicin tarin abubuwa akan Duniya akan glaciers na gabar tekun Pacific na kudancin Chile ya kai 600 g / cm2.
Valuesimar cirewar ta dogara ne da yanayin damina a lokacin da kankara ke farawa da sauka. Idan yanayi a cikin ɓangarorin sama na kankara an ƙaddara su gabaɗaya ta yanayin latti da tsayin tsaunuka, to, iyakar abin da kankara ke kaiwa kuma ya dogara da girmansu, siffofin taimako (gangarowar kwari) kuma, zuwa babban girma, kan adadin tarawa: mafi girma shine, gwargwadon yadda suke shiga. glaciers kuma mafi tsananin hanyoyin saukarda harsunansu.
Matakan Glaciological
Ga yankin USSR, mun kwatanta ƙimar ma'anar yanayin zafi na lokacin bazara da narkewar da aka lissafa daga gare su don kwatankwacin matakan glaciological (Siffa Biyar an zaɓi su azaman matakan kwatankwacinsu:
- mafi girman alamar glaciers a cikin tsarin glacial;
- matsakaicin matsakaicin tsayi na yankin tarawa a cikin tsarin glacial;
- matsakaicin matsakaicin tsayi na iyakar caji a cikin tsarin glacial;
- matsakaicin matsakaicin tsayi na yankunan haɓaka a cikin tsarin glacial;
- matsayi mafi ƙasƙanci na ƙarshen ƙaran kankara a cikin tsarin kankara. Ana lasafta yanayin zafi na bazara la'akari da gradient na tsaye da tasirin sanyaya na glaciers, wanda ke ƙaruwa da girmansu.
Canjin yanayin yanayi
Yanayin iska sama da mafi girman maki yana canzawa ta 25 ° С: daga 4 ° a Yammacin Altai da Kronotsky Peninsula har ma da 6 ° a cikin ƙanƙarar "snowflake" na Kuznetsk Alatau zuwa -19 ° a Tsakiyar Tien Shan (Pobeda Peak, Khan Tengri ), ya fi Pamirs sanyi, saboda matsayinta na arewa. A cikin tsaunuka na Asiya ta Tsakiya ya fi na Arctic sanyi, kuma a yankunan Altai da Kamchatka mai tsananin ɗumi, ƙanƙarar kan tashi a cikin yanayi mai zafi fiye da na tsaunukan kudancin Pamirs da Caucasus.
Yanayin iska na bazara a tsakiyar yankin tarawar ya canza ta 11 ° C: daga -5.5 ° a arewacin gangaren Trans-Alai Range zuwa 5.5 ° a cikin yankuna masu zafi mafi yawa na Western Altai da Kronotsky Peninsula. Bugu da kari, yawan zafin jiki ya fi yawa a tsakiyar yankin, inda wuraren tarawa ba sa tashi sama da iyakar ciyarwar.
