umkhombe wepolar

iziphumo zomkhombe wepolar

Kwimeteorology sifumana iinkqubo zangaphambili ezihamba kwiindawo eziphakamileyo kwaye zinokubonwa ngokuphatha imigca ekwimephu ukuqonda ngcono ukuhamba komoya. Ngokuqhelekileyo, aziqondwa lula luluntu ngokubanzi. Kule meko, abantu abaninzi abazi ukuba yintoni a umkhombe wepolar kwaye yayithetha ntoni kwimephu yemozulu.

Ngesi sizathu, siza kunikezela eli nqaku ukuze sikuxelele ukuba yintoni na i-fly through, iqala njani kwaye zeziphi iimpawu zayo.

Yintoni umkhombe wesiqhelo

ukwakheka kwekhephu

Kukho iinkcazo ezahlukeneyo zokuba yintoni umkhombe kuncwadi lwenzululwazi. Kungatshiwo ukuba yindawo emide yoxinzelelo oluphantsi lwesalamane kumphezulu okanye kumoya ongaphezulu. Njengesiqhelo, ayidityaniswanga nelophu evaliweyo, ngoko isetyenziselwa ukwahlula kubuncinci obuvaliweyo. Ngaphambili ngumva. Le nkcazo ifana ngakumbi nombono wamajelo ashukumisayo okanye e-barometric. Kule meko, ukufumana ubuncinci bomgangatho okanye uxinzelelo oluphezulu lwe-barometric apho i-contour yokudakumba ingasondeli ngokwaneleyo ukudweba intlambo.

Kunye nomkhombe wesintu, kwavela ingqikelelo yomkhombe. Kule meko, ii-isobars azikho kwicala elifanayo kunye noxinzelelo olukhulu kunokuba luqhelekile. Ukudakumba kunokuthiwa kwandisa ngasentla ukusuka kwindawo ephantsi.

Yintoni umkhombe wepolar

Kukungena komoya obandayo osuka kwi-Arctic, ngoko ihlala isehlisa ubushushu. Ummandla we-atmosfera kunye noxinzelelo oluphantsi olunxulumene nommandla okufutshane kwinqanaba elifanayo. Ibizwa ngokuba yi-trough kuba inobume obungu-V, inomphezulu oyi-concave ukuya kuxinzelelo oluphantsi.

Idalwa xa iindimbane zomoya zihamba emoyeni. Xa imimoya yasentshona ivela kwiNorth Pole, i-latitude iphantsi kwaye umoya uphezulu. Ngokuqhelekileyo ihamba ukusuka entshona ukuya empuma kwaye ihamba kunye nobuninzi be-cloudiness kuwo onke amanqanaba. Kwimeteorology, ukuhla kobushushu kudla ngokunxulunyaniswa nezaqhwithi okanye imida.

Umahluko phakathi kwe-polar trough kunye ne-DANA

umkhombe kwimephu

Umkhombe kuxa umoya ofudumeleyo, omanzi unyuka kwindawo emide yoxinzelelo oluphantsi phakathi kwemimandla emibini yoxinzelelo oluphezulu (anticyclones), ibunjwe bumoya opholileyo, obunzima bomoya ojikela ngaphakathi kwaye udale ukukhula okuthe nkqo kwamafu nemvula ehamba nabo. Ke, ibhekisa kuxinzelelo olude lwebarometric olubekwe phakathi kwee-anticyclones ezimbini, okanye ngokuchanekileyo, imimandla emibini ye-anticyclonic eneempawu ezahlukileyo kancinci.

I-DANA yimeko yemozulu yoxinzelelo oluphantsi oluhlula kwaye luhamba ngokuzimeleyo kwi-airflow engaphantsi kwentshona. Amathontsi amanzi abandayo anokuhlala emile kangangeentsuku okanye ngamanye amaxesha aye ngasentshona, kwelinye icala lokuhamba okukhoyo emoyeni.

imimoya kunye neenkanyamba

umkhombe wepolar

Ngokungafaniyo noxinzelelo okanye iinkanyamba, ezingaphezulu okanye ngaphantsi kwesetyhula okanye indalo ejikelezayo, imimoya evelisa izikhonkwane ibuthathaka kuba amandla azo aphela ngokukhawuleza njengoko iindimbane zomoya zinyuka ngaphakathi kumkhombe ngokwawo. Nangona kunjalo, isalathiso sale mimoya sisifundo esifundwa kancinci kwaye sihlala sibhideka, nangona ubukhulu becala bachaza iindlela ezivelisa iimvula ezingaqhelekanga neziqhubekayo kwi-trough.

Le yinkqubo entsonkothileyo nenzima ukuyichaza ngokwejografi, kwaye ukuchongwa kwayo kwiimephu zemozulu akusoloko kulula kuba, nokuba leliphi na ilifu elingaphambili elibonakala kwi-axis yomkhombe, linokufikelela kumlinganiselo omkhulu (ngamawaka eekhilomitha). ). , ii-anticyclones ezimbini ezazimda zachongwa kuphela kukungabikho kwamafu nobukhulu bawo obukhulu. Kodwa kufuneka sikhumbule ukuba imimoya ejikeleze i-anticyclones ikwicala elichasene nezitshingitshane, zijikeleza ngasekunene: kuba sinee-anticyclone ezimbini njengamaziko ezenzo, zikhupha umoya, kwaye intsebenziswano phakathi kwabo "kwintlambo", ukwenza ijelo, umoya ujikeleza ngasekunene ujikeleze ijelo ngokwalo

Ukuthetha ngokuthe ngqo, imijelo ye-atmospheric ifana kakhulu nezitshingitshane zetropikhi, ubuncinci ngokwesakhiwo. Owona mahluko uphawuleka kakhulu kukumila (isetyhula kwimeko yenkanyamba, eyondelwe kwimeko yomkhombe) kunye nobukhulu bayo: I-Hurricane Sandy, inkulu erekhodiweyo (i-1.800 yeekhilomitha ububanzi) apho inokufikelela ubude be-16.000 km okanye ngaphezulu.

Kodwa ukufana kwi-atmospheric circulation kunokubonwa kwezi ziganeko zemeteorological: iibhanti zemvula kuzo zombini iimeko zibonisa indlela efanayo kunye nophuhliso, zijika ngokuphambene ne-clockwise kwi-hemisphere esenyakatho kunye newotshi kwi-hemisphere esemazantsi.

Ngokukodwa, i-polar trough ihlala ishukuma ukusuka entshona ukuya empuma, kwaye ikhatshwa ngamanqanaba ahlukeneyo okugubungela ilifu.

ukungazinzi komoya

Phantsi kweemeko ezithile, izikhonkwane zenziwa imephu njengeempawu ezinxulumene ne ubume bemvula engekho ngaphambili kwiinyanga ezifudumeleyo, eyilwe ngokusisiseko yi-convective foci ye- diurnal evolution. Ezi ngqikelelo zokudakumba zizotywe kwimephu yemozulu zenzelwe ukuxhasa iindawo zamafu, ngakumbi uqikelelo lwengqikelelo okanye uhlalutyo lwemimandla yemvula, ehlala itolikwa njengemigca yokutshintsha kwemozulu okanye ukuwohloka ngenxa yokuhanjiswa.

Ingongoma kukuba ngamanye amaxesha le migca engazinzanga ixhaswa yimijelo ye-thermal eguquguqukayo kakhulu kunye ne-cryogenic ridges, yonke into enokudala indawo efanelekileyo yokuhambisa. Ngaloo ndlela, izikhonkwane zihlala zizotywa emva kwemvula/umgca welifu, ehambelana nokutshintsha kwemozulu ehambelana ne-convection kunye nezivunguvungu.

Njengoko ubona, i-meteorology iba ngakumbi nangakumbi iikonsathi ezintsokothileyo ezinokukhokelela kubukho beziganeko ezithile zemozulu. Ngeli nqaku sijonge ukuphelisa onke amathandabuzo malunga nobukho bemibhobho yepolar. Ngoko ke, ndiyathemba ukuba ngolu lwazi unokufunda ngakumbi malunga ne-polar trough, indlela eyakhiwe ngayo kunye nemiphumo yayo.


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