Mng'ono wa ayezi

kuchuluka kwa matalala kunawonjezeka

Ambiri aife timadziwa zaka zachisanu zomwe zimachitika padziko lathu lapansi. Komabe, lero tikambirana za zaka zazing'ono zazing'ono. Sizochitika padziko lonse lapansi koma ndi nyengo yotsika kwambiri yomwe ikupezeka ndikukula kwa madzi oundana munthawi yathu ino. Zinachitika pakati pa zaka za m'ma 13 ndi 19, makamaka ku France. Ndi amodzi mwamayiko omwe adavutika kwambiri ndi kutsika kwamtunduwu. Kutentha kumeneku kudabweretsa zovuta zina ndikupangitsa kuti munthu azolowere chilengedwe.

Chifukwa chake, tipereka nkhaniyi kukuwuzani chilichonse chomwe mukufuna kudziwa zazaka zazing'ono zazing'ono komanso kufunikira kwake.

Mng'ono wa ayezi

zaka zazing'ono zazing'ono

Ndi nyengo yozizira yomwe idachitika ku Europe ndi North America kuyambira mchaka cha 1300 mpaka ma 1850. Imafanana ndi nthawi yomwe kutentha kunali kocheperako pang'ono ndipo magawo anali ocheperako kuposa zachilendo. Ku Europe chodabwitsa ichi chidaphatikizidwa ndi mbewu, njala ndi masoka achilengedwe. Sikuti idangowonjezera mvula yambiri ngati matalala, komanso idachepetsa mbewu. Tiyenera kukumbukiranso kuti ukadaulo womwe ulipo mderali sunali wofanana ndi lero. Pakadali pano tili ndi zida zina zambiri zokhoza kuthana ndi zovuta zomwe zimafotokozedwera munyengo zanyengo.

Chiyambi chenicheni cha msinkhu wachisanu sichimveka bwino. Ndizovuta kudziwa nthawi yomwe nyengo yayamba kusintha ndikusintha. Tikulankhula za nyengo yomwe ikuphatikiza zonse zomwe zapezeka kwakanthawi m'derali. Mwachitsanzo, ngati tisonkhanitsa mitundu yonse monga kutentha, kuchuluka kwa ma radiation a dzuwa, kayendedwe ka mphepo, ndi zina zambiri. Ndipo timaziwonjezera pakapita nthawi, tidzakhala ndi nyengo. Izi zimasinthasintha chaka ndi chaka ndipo sizikhala zokhazikika nthawi zonse. Tikanena kuti nyengo ndi yamtundu winawake, ndichifukwa chakuti nthawi zambiri imagwirizana ndi mitundu yazosiyanasiyana zomwe zikugwirizana ndi mtunduwu.

Komabe, kutentha sikukhazikika nthawi zonse ndipo chaka chilichonse amasiyana. Chifukwa chake, ndizovuta kudziwa bwino pomwe kudali kuyamba kwa msinkhu wachisanu. Popeza zovuta zowerengera magawo ozizirawa, malire azaka zazing'ono zazing'ono amasiyana pakati pa maphunziro omwe angapezeke za izi.

Zofufuza pa Little Ice Age

kugwira ntchito m'nyengo yachisanu

Kafukufuku wopangidwa ndi Laboratory of Glaciology and Geophysics of the Environment of the University of Grenoble and of Laboratory of Glaciology and Geophysics of the Environment of the Federal Polytechnic School of Zurich, akuwonetsa kuti kutalikirana kwa madzi oundana kumachitika chifukwa cha kuchuluka kwamvula, koma kutsika kwakukulu kwa kutentha.

M'zaka izi, kupita patsogolo kwa madzi oundana makamaka chifukwa cha kuchuluka kwa kuposa 25% ya chipale chofewa m'nyengo yozizira kwambiri. M'nyengo yozizira sizachilendo kuti kukhale mvula yamatalala m'malo ambiri. Komabe, pakadali pano, maphompho awa adayamba kukulira mpaka kupezeka kumadera komwe kunalibe chipale chofewa.

Kuyambira kutha kwa Little Ice Age, kubwerera kwawo kwa madzi oundana kwakhala kukuchitika mosalekeza. Madzi onse oundana ataya pafupifupi gawo limodzi mwa magawo atatu a kuchuluka kwawo ndipo makulidwe apakati adatsika ndi masentimita 30 pachaka panthawiyi.

Zimayambitsa

zaka zazing'ono zazing'ono kwa anthu

Tiyeni tiwone zomwe zingayambitse msinkhu wachisanu. Palibe mgwirizano wamasayansi pamasiku ndi zoyambitsa zomwe zingayambitse nthawi yachisanu. Zomwe zimayambitsa zimatha kukhala chifukwa chakuchepa kwa ma radiation a dzuwa omwe amagwera padziko lapansi. Kucheperako kwa kuwala kwa dzuwa kumapangitsa kuzizira kwadziko lonse ndikusintha kwamphamvu yamlengalenga. Mwanjira imeneyi, mvula yamtundu wa chipale chofewa imachitika pafupipafupi.

Ena amalongosola kuti chodabwitsa cha nthawi yaying'ono yamchere chimachitika chifukwa cha kuphulika kwa mapiri komwe kwasokoneza mlengalenga pang'ono. Pazochitikazi tikulankhula zofananira pamwambapa koma ndi chifukwa china. Sikuti kuchepa kwa mphamvu yochokera padzuwa kumachokera molunjika ku dzuwa, koma ndi mdima wa mlengalenga womwe umapangitsa kuchepa kwa kutentha kwa dzuwa komwe kumakhudza dziko lapansi. Ena mwa asayansi omwe amateteza mfundoyi amatsimikizira kuti pakati pa zaka 1275 ndi 1300, pomwe ndi pomwe madzi oundana adayamba, Kuphulika kwa mapiri 4 kwanthawi yazaka makumi asanu ndikomwe kudapangitsa izi chifukwa zonse zidachitika nthawi imeneyo.

Fumbi laphalaphala limanyezimiritsa cheza cha dzuwa munjira yokhazikika ndikuchepetsa kutentha konse komwe kumalandira padziko lapansi. Nyuzipepala ya US National Center for Atmospheric Research (NCAR) yakhazikitsa njira yoyeserera nyengo yoyesa momwe mapiri amaphulika mobwerezabwereza, kwazaka zopitilira makumi asanu. Zomwe zimawonjezeka chifukwa cha kuphulika kwa mapiri panthawiyi zimavomereza zovuta zonse zomwe zingachitike chifukwa cha kuphulika kwa mapiri. Zotsatira zowonjezerekazi zonse zimatha kubweretsa Little Ice Age. Firiji, kukulira kwa madzi oundana am'nyanja, kusintha kwa kayendedwe ka madzi, ndi kuchepa kwa mayendedwe otentha kupita kugombe la Atlantic ndizotheka ku Little Ice Age.

Nthawi zachisanu

Komabe, ziyenera kukumbukiridwa kuti kukula kwa madzi oundana ochepa sikungafanane ndi nthawi zina zazitali komanso zopweteka zomwe dziko lathuli lakhala nalo pamlingo wa glaciation. Zomwe zimayambitsa nyengo sizidziwika bwino koma pambuyo pa chochitika ichi pomwe zamoyo zamagulu osiyanasiyana zakhala zikuwonekera. Izi zikutanthauza kuti pamlingo wosinthika, nthawi yachisanu yomwe idachitika padziko lathu lapansi zaka 750 miliyoni zitha kukhala zabwino.

Ndikukhulupirira kuti ndi izi mutha kuphunzira zambiri zazaka zazing'ono zazing'ono ndi mawonekedwe ake.

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