Guguwar Dorian

guguwa dorian

Mun san cewa canjin yanayi yana ƙaruwa da ƙarfi wanda abubuwan yanayi na yanayi masu ban mamaki ke faruwa. A wannan yanayin, zamu tattauna game da shi Guguwar Dorian. Ya faru a watan Satumba na 2019 kuma an lasafta shi a matsayin rukuni na 5. Wannan matakin rukuni shine matsakaici. Ya haifar da mummunan bala'i kuma ya koya mana halin canjin yanayi don ƙirƙirar sau da yawa waɗannan nau'ikan munanan yanayi.

Saboda haka, zamu sadaukar da wannan labarin don gaya muku duk abin da kuke buƙatar sani game da Guguwar Dorian, halayenta da sakamakonta.

Babban fasali

mahaukaciyar guguwa dori

Girman Saffir-Simpson shine tsarin auna guguwa. Ya kasu kashi 5, wadanda suke la’akari da saurin iska da aikin iska bayan mahaukaciyar guguwa, kuma suna la’akari da hauhawar yanayin ruwa a bayan teku. Guguwar Dorian ta kai rukuni na 5, wanda shi ne mafi girma da hadariKodayake ya rage gudu lokacin da ya isa Bahamas, wanda ya haifar da munanan raunuka kuma aƙalla mutane biyar suka mutu.

Bari mu ga yadda saurin iska ya dogara da rukunin:

  • Kashi na 1: Iska tsakanin 118 da 153 KM / awa
  • Kashi na 2: Iska tsakanin 154 da 177 KM / awa
  • Kashi na 3: Iska tsakanin 178 da 209 KM / awa
  • Kashi na 4: Iska tsakanin 210 da 249 KM / awa
  • Kashi na 5: Iskokin sama da 249 KM / awa

Waƙar Guguwar Dorian

Bahamas a matsayin manufa

Lokacin da aka gano Guguwar Dorian, Cibiyar Guguwa ta Kasa ta yi mamakin "rashin tabbas a hango hanyar" guguwar. Cibiyar Guguwa ta Kasa ta yi tunanin cewa saboda yawan hanyoyin samar da samfura, amincin kintace-tashincen har yanzu bai yi ƙasa ba. Ya kamata a lura cewa karamin mahaukaciyar guguwa mai zafi kamar Dorian galibi yana da wuyar hasashe.

Dorian tana da lokaci na makamai da famfo, galibi saboda ƙurar Sahara ta isa Tekun Caribbean kuma ta jinkirta ci gabanta. Koda wannan lamarin yana haifar da diamita na guguwar ta sauka tsakanin kilomita 35 zuwa kilomita 75. Daga kashi na farko, wannan yanayin ya nuna cewa ya ratsa Puerto Rico da arewa maso gabashin Jamhuriyar Dominica. Wasu ma sun yi hasashen cewa zai iya isa arewacin Kyuba. Amma ya sake yin mamaki, ya bar 'yan ruwan sama kaɗan a Puerto Rico. A ƙarshe, ta nufi arewa maso yamma kuma ta isa Bahamas da Florida a Amurka.

Hoton da Dorian ya bari a cikin tsibirin Bahamas ya kasance mara kyau. Akalla mutum 5 sun mutu sannan sama da 20 sun jikkata. A cewar wani rahoto na kungiyar agaji ta Red Cross ta kasa da kasa, wanda aka bayar a ranar Litinin, 2 ga Satumbar, 2019, sama da gidaje 13 ne aka samu mummunar lalacewa kuma da dama sun lalace kai tsaye. Bugu da kari, ambaliyar ta haifar da Tsibirin Abaco, gungun cays zuwa arewa maso yammacin Bahamas. Ruwan da ke shan ruwa ya gurbata da ruwan gishiri.

Ayyukan da guguwar Dorian ta shafa

A Amurka, wucewar mahaukaciyar guguwar ya shafi jirage sama da 600. Sakamakon isowar guguwar, filayen saukar jiragen sama a Orlando, Daytona Beach, Fernandina Beach, Jacksonville da Pompano Beach zasu kasance a rufe har zuwa Laraba. Bugu da kari, tashoshin jiragen ruwa na Florida suma sun daina bayar da aiyuka kuma an dakatar da jiragen kasa. A Georgia, South Carolina da North Carolina, duk mazaunan da ke zaune a gabashin I-95 an kwashe su saboda yiwuwar ambaliyar.

Guguwar ta kasance a cikin Bahamas tsawon awanni 18. Ya kasance mummunan mafarki. Kodayake ana tsammanin ya ragu kuma har ma ya tsaya, kaɗan ne suka yi tsammanin tsayawarsa a kan Bahamas zai daɗe haka.

Daga yammacin Litinin, Dorian ya zauna kusan wuri ɗaya har zuwa wayewar gari a ranar Talata, lokacin da ya fara matsawa arewa maso yamma da saurin kunkuru: km 2 / h wanda daga baya ya tashi zuwa 7 km / h.

Tsarin Hurricane

guguwa da canjin yanayi

A cewar masana kimiyya akwai wani halin damuwa da ke zuwa daga canjin yanayi. Wata mahaukaciyar guguwa mai zafi ta fi dacewa tsayawa kusa da gabar teku kuma ta kwashe awanni da yawa a kan wadannan yankuna. Babu shakka wannan lamari ne mai matukar tayar da hankali, tunda za a dade ana ganin illar da ke kan biranen. Dangane da karatun, matsakaicin gudun guguwa ya ragu da 17%, tsakanin 15,4 km / h da 18,5 km / h.

Kasancewar mahaukaciyar guguwar ta tsaya a wani yanki na nuna cewa barnar da ke wannan yankin zai karu matuka. Wannan saboda iska da ruwan sama suna shafar yankuna na tsawon lokaci. Misali, Harvey ya zubar da ruwan sama sama da milimita 1.500 a Houston bayan ya kasance a can na wasu kwanaki. Guguwar Dorian ta buge Bahamas da tsawan kafa ashirin da biyu da ruwan sama sama da awanni 48.

Sanadin

Kamar yadda bincike ya nuna, a rabin karnin da ya gabata, duk guguwar da ta tsaya ko raguwa tana da dalili na musamman. Dalilin yana da alaƙa da rauni ko durƙusar da manyan sifofin iska. Koyaya, an yi imanin cewa wannan yanayin ya kasance saboda raguwar gabaɗaya cikin yanayin yanayi (iska ta duniya), samar da guguwa a cikin yankuna masu zafi kuma tana matsawa zuwa sandunan da ke tsakiyar latitude.

Mahaukaciyar guguwa ba ta motsawa da kansu: guguwar iska ta duniya ce ke motsa su, wanda matsin lamba a yanayi ke shafar su.

Kwararrun masana ne ke shakkar tasirin dumamar yanayi kan mahaukaciyar guguwa. Philip Klotzbach, wani masanin yanayi ne a jami'ar jihar ta Colorado da ke Amurka, ya ce babu wata hujja da ke nuna cewa canjin yanayi na haifar da karin guguwa, amma akwai shaidar cewa canjin yanayi na samar da yanayin da za su zama masu halakarwa. Misali, Dorian ita ce mahaukaciyar guguwa ta Category 5 ta biyar da ta samo asali a cikin Atlantic a cikin shekaru huɗu kawai, rikodin da ba a taɓa yin irinsa ba. Yanayi mai ɗumi na iya riƙe ƙarin danshi sabili da haka ya kawo ƙarin ruwan sama. Bugu da kari, tare da hauhawar matakan teku, guguwar guguwar na kara kutsawa cikin teku, tunda matakin teku ya fi haka girma.

Ina fatan cewa tare da wannan bayanin zaku iya koyo game da Guguwar Dorian da halayenta.


Abubuwan da ke cikin labarin suna bin ka'idodinmu na ka'idojin edita. Don yin rahoton kuskure danna a nan.

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