Sakamakon dusar ƙanƙara

Ana samar da dusar ƙanƙara a lokacin yanayin sanyi lokacin da iska mai sanyi ke motsawa a fadin ruwa mai zafi. Ƙananan iska, wanda ruwan tafkin ya dumama, yana karɓar tururin ruwa daga tafkin kuma yana tashi ta hanyar iska mai sanyi. Sa'an nan tururi ya daskare kuma an ajiye shi a bakin tekun leeward (a karkashin iska).

Hakanan yana faruwa a kan ruwa mai gishiri, lokacin da ake kira Tasirin teku ko dusar ƙanƙara. Ana inganta tasirin lokacin da iska mai motsi ta tashi ta hanyar tasirin orographic na tsaunuka mafi girma a bakin tekun iska. Wannan haɓakawa na iya samar da ƙanƙanta amma mai ƙarfi sosai na hazo, wanda ke sakawa a cikin inci da yawa na dusar ƙanƙara a kowace awa, sau da yawa yana haifar da babban adadin dusar ƙara.

Yankunan da tasirin tafkin ya shafa da abubuwan da suka faru na "tasirin teku" ana kiransu snowbelts. Wadannan sun hada da yankunan gabashin Great Lakes a Arewacin Amurka, yammacin iyakar arewacin Japan, Tafkin Baikal a Rasha, da yankunan da ke kusa da Babban Tafkuna Gishiri, Tekun Baƙi, Tekun Caspian, Tekun Baltic, Tekun Adriatic, Tekun Arewa da sauransu. 

Tasirin tafkin ne yanayin da ya haifar da dusar ƙanƙara. A wasu yanayi, iska mai karfi na iya haɗawa da dusar ƙanƙara mai tasiri a tafkin wanda ke haifar da yanayin dusar ƙana; duk da haka, tsawon lokacin taron sau da yawa dan kadan ne fiye da abin da ake buƙata don gargadi na dusar ƙara a duka Amurka da Kanada.

Idan zafin iska ya yi ƙasa sosai don kiyaye hazo a daskare, ya faɗi kamar dusar ƙanƙara mai tasirin tafkin. Idan ba haka ba, to yana faɗo a matsayin ruwan sama mai tasirin tafkin . Don samun ruwan sama ko dusar ƙanƙara da ke da tasirin tafkin, dole ne iskar da ke tafiya a cikin tafkin ta kasance mai sanyi sosai fiye da iska (wanda zai iya kasancewa kusa da zafin saman ruwa). Musamman, zafin iska a wani tsayin daka inda karfin iska yakai     (kimanin  a tsaye) ya zama  ƙasa da zafin iska a saman. Tasirin tafkin yana faruwa lokacin da iska a     ya fi sanyi fiye da yanayin ruwa na iya haifar da tsawa, ruwan dusar ƙanƙara tare da walƙiya da tsawa (wanda ya haifar da yawancin makamashi da ake samu daga karuwar rashin kwanciyar hankali), kuma, a lokuta masu wuya, hadari. 

 Kafawa 
Ana buƙatar wasu mahimman abubuwa don samar da ruwan sama na tasirin tafki kuma wanda ke ƙayyade halayensa: rashin daidaituwa, ɗaukar, shear iska, danshi na sama, tabkuna na iska, tilasta sinoptic (babban) -scale, orography / topography, da dusar ƙanƙara ko rufe kankara.

 Rashin daidaituwa 
Bambancin zafin jiki kusan  tsakanin zafin tafkin da tsayin yanayi (kimanin  wanda matsa lamba barometric yayi daidai da  ) yana ba da cikakkiyar rashin kwanciyar hankali kuma yana ba da damar zafi mai ƙarfi da jigilar danshi a tsaye. Matsakaicin raguwar yanayi da zurfin raɗaɗi kai tsaye suna shafar yanayin tafkin mesoscale da yanayin synoptic; zurfi mai zurfi mai zurfi tare da ƙara matsananciyar raguwa da matakin danshi mai dacewa yana ba da damar yin hazo mai girma, tsayin tafki da hazo kuma a zahiri ya fi girma hazo. 

 Samun kaya 
Tsakanin da iska ke tafiya a kan ruwa ana kiransa ceto. Saboda yawancin tabkuna ba su da siffar, digiri daban-daban na tafiye-tafiye suna samar da nisa daban-daban; yawanci, ana buƙatar ɗaukar akalla  (60  don samar da ruwan sama na tafkin. Gabaɗaya, yawan abin da aka samo, yawan hazo da aka samar. Ƙarin ɗaukar kaya yana ba da iyakar iyaka tare da ƙarin lokaci don zama mai cike da tururi na ruwa da kuma ƙarfin zafi don motsawa daga ruwa zuwa iska. Yayin da iska ta kai wancan gefen tafkin, injin da ke tashi da sanyaya ruwa yana fitar da kansa a cikin nau'in kwantar da hankali kuma yana fadowa kamar dusar ƙanƙara, yawanci a cikin kilomita  (25  na tafkin, amma wani lokacin har zuwa kusan kilomita  (100 . 

 Manazarta