Gabatarwar sanyi

Sanyin gaba mai sanyi

Yanayi da yawa yana canza tasirin yanayi. Theimar waɗannan masu canjin sune waɗanda ke haifar da rashin kwanciyar hankali, kwanciyar hankali, gusshi na iska, ruwan sama, da dai sauransu. Da alama kun ji mai yanayin yayi magana sau da yawa yana cewa a gaban sanyi. Menene wannan gaban gaban sanyi?

A cikin wannan labarin, zamuyi bayanin menene gaban sanyi, yadda ake kirkirarsa da kuma irin illolin da yake haifarwa ga yanayin.

Menene gaban sanyi

Sanyin gaba mai sanyi

Lokacin da muke magana game da gaba, muna magana ne kan layin haɗawa tsakanin nau'ikan iska guda biyu waɗanda ke da halaye daban-daban. Talakawan iska suna yawo kuma suna da halaye daban-daban dangane da masu canjin yanayin da muka ambata a sama. Ofaya daga cikin abubuwan da aka fi la'akari da su cikin ƙimar yanayin don sanin halayen gaban shine yanayin zafin jiki.

Ta hanyar wannan canjin, galibi, zamu iya sanin nau'in gaban da ke zuwa wani yanki. Idan gaban sanyi ne, gaba mai zafi, dss. Wani daga canjin canjin yanayi wanda gaba yake dogaro shine lzafi, saurin iska da shugabanci da matsin yanayi.

Gaban sanyi shine wanda ke nuna iyaka tsakanin wani iska mai ɗumi mai motsawa, game da iska mai zafi. A yadda aka saba, a cikin irin waɗannan fannoni yanayin sanyi ne ke raba ɗimbin iska mai zafi. Yana da mahimmanci a san cewa yawan iska ba ya cakuɗewa ta gaba ɗaya. In ba haka ba, ba za a sami irin wannan gaba ba. Dole ne muyi la'akari da banbancin yawa lokacin magana game da yawan iska.

Ka tuna cewa iska mai zafi ba ta da yawa fiye da iska mai sanyi, saboda haka koyaushe zai tashi. Lokacin da iska mai sanyi da dumi mai iska suka hadu, yanayin iska mai sanyi ne ke motsawa cikin sauri saboda ya fi yawa. Wannan yana sa iska mai zafi tayi motsi a tsayi saboda ba ta da yawa. Idan muna da gaban gaba, gabaɗaya, yanayin zafi zai sauka tunda iska mafi sanyi tana saman ƙasa.

Yadda ake kafa shi

Gabatarwar sanyi

Hoton - Wikimedia / HERMENEGILDO SANTISTEBAN

Zamu binciki mataki-mataki yadda ake kirkirar wannan nau'in gaban. Lokacin da muke da iska mai danshi da kuma rashin ƙarfi, idan ya tashi sama saboda ƙarancin ƙima, zai shiga cikin digo na yanayin zafi irin na sararin samaniya. Yayin da muke kara tsawo, da yawan zafin jiki yana raguwa a cikin gradient thermal. Wannan zai sa iska mai zafi ta dunƙule zuwa gajimare.

Ya danganta da yanayin muhalli da adadin iskar mai zafi wanda ke tarawa, ya bambanta nau'ikan gajimare. Idan iska mai sanyi ta tarwatsa babban taro na iska mai dumi a hawan mai girma, tZamu ƙare da ƙarin wannan iskar da zata tara a tsawan sama. Wannan zai haifar da ci gaba a tsaye na gajimare mai kama da cumulonimbus.

Waɗannan nau'ikan gajimare suna haifar da rikice-rikicen yanayi wanda ke haifar da ruwan sama mai ƙarfi da ƙarfi. Daga cikin abubuwan da zamu iya samu kuma muna da ƙanƙara, guguwar lantarki, iska mai karfi, guguwar dusar ƙanƙara, mummunan tawaye, gusty iska da ma guguwa idan zasu iya samarwa.

Har ila yau dole ne a ce ba duk fuskokin sanyi suke da rikici ba. Matsayin tashin hankali ko haɗarin gaban kogi ya dogara da laima na yawan iska mai zafi, ban da adadin iska mai zafi da ke takura. Zai yiwu tashin iska mai dumi ba a tsaye yake ba don samar da gizagizai a tsaye, amma wasu nimbostratus zasu samar da yanayi mai matsakaicin yanayi. Ofayan ƙayyadaddun ƙimomin shine saurin iska. Dogaro da wannan ƙimar, yanayin iska mai sanyi zai yi motsi cikin sauri wanda zai, bi da bi, motsa ƙarin iska mai ɗumi a tsayi. Idan iska mai danshi ne kuma motsin yana tsaye gaba daya, zamu sami mummunan yanayi.

Babban fasali

lokaci tare da gaban sanyi

Gabon sanyi suna motsi da sauri, tare da saurin tsakanin 40 zuwa 60 km / h. Wannan yana sanya lokacin da zasu wuce tsakanin kwanaki 3 da 7. Girman juzu'i na dukkanin yanayin wanda yawanci abin yake yawanci shine tsakanin kilomita 500 zuwa 5.000. Amma faɗi, yana iya zama tsakanin kilomita 5 zuwa kilomita 50.

Lokacin da aka ce gaban sanyi yana gabatowa, a cikin iska mai zafi yanayin iska yana daidaita. Hakanan yana iya kasancewa yana ɗan sauka kaɗan wanda shine yake haifar da iska mai motsawa zuwa yankin da ke da ƙarancin matsin yanayi. Abu na farko da muka saba lura dashi dan gano sanyin gaba shine samuwar farin gajimare mai tsayi sosai. Wadannan giragizan suna daga cikin nau'ikan cirrostratus. Daga baya, se suna samar da gajimare gajimare kamar Altocumulus ko Altostratus. A wannan lokacin, iska tana da sauƙi amma ba ta da tsayayyen alkibla.

Yayinda gaban sanyi ke matsowa kusa, gizagizai suna kara kauri da ruwan sama. Fiye da duka, abin da ke nuni da kusancin gaban gaba shine ƙaruwar girman ɗigon ruwan. Iska ta fara zama guss kuma har yanzu bata sami kwanciyar hankali ba.

Lokacin da mun riga mun haɗu da gaban sanyi, za mu lura da raguwar yanayin zafi, mai ƙarfi shawa wanda galibi ana tare da hadari, iska tare da gusts masu ƙarfi, rashin gani sosai da kuma raƙuman ruwan teku.

Da zarar wuce gaban

Lokacin da gaban sanyi ya wuce, zamu sami damar ganin manyan sarari zuwa arewa maso yamma kuma ganuwa zata inganta sosai. Zafin zazzabin zai ɗan ɗan sauka kuma za a sami ƙarancin zafi. Hawan yanayi yana ƙaruwa cikin sauri, saboda iskar da ke samanmu ta fi sanyi kuma saboda haka ta fi nauyi.

Game da gizagizai, wasu gajimaren gajimare na iya bayyana amma ba tare da ƙarin ruwan sama ba. A can arewacin duniya, rawar iska zata tafi dama kuma a kudu zuwa hagu saboda tasirin coriolis.

Ina fatan cewa tare da wannan bayanin zaku iya ƙarin koyo game da yanayin sanyi da duk abin da ke da alaƙa da shi.


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  1.   ARNOLD GOMEZ m

    Na gode sosai da bayanin. Ina da tambaya, ina zaune a Tegucigalpa, Honduras, amma a nan idan aka ce akwai gaban gaba, gizagizai masu launi ja kuma ba ya ruwan sama kwata-kwata.

  2.   Adriana m

    Kyakkyawan bayani