Ridge (meteorology)

A cikin ilimin yanayi, tudun ko barometric ridge yanki ne mai tsawo na matsin yanayi mai tsawo idan aka kwatanta da yanayin da ke kewaye da shi, ba tare da kasancewa mai rufewa ba. Yana da alaƙa da yanki na matsakaicin ƙuƙwalwar ƙuƙwalwa na iska. Dutsen ya samo asali ne a tsakiyar anticyclonic kuma yana tsakanin yankuna biyu masu matsin lamba, kuma ana kiran maɓallin matsakaicin layin. Wannan sabon abu akasin rami ne.

 Bayyanawa 
Ana iya wakiltar ridges ta hanyoyi biyu:

 A kan Taswirar yanayi na sama, isobars na matsin lamba suna samar da layi inda ake samun matsakaicin matsin lamba tare da axis na tudun.
 A cikin taswirar iska ta sama, isohypses na tsawo na geopotential suna samar da irin wannan siffar inda matsakaicin ya bayyana tudun.

 Yanayi mai alaƙa 
Idan aka ba da jagorancin iskõki a kusa da yaduwar anticyclonic da kuma gaskiyar cewa tsarin yanayi yana motsawa daga yamma zuwa gabas: 

 a gaban wani saman-ridge, iska da ke fitowa daga yankunan polar kuma yana kawo iska mai sanyi.
 a bayan layin saman, kwararar da ke fitowa daga ma'auni kuma tana kawo iska mai laushi.

Yankunan saman, kamar highs, suna samar da yanayi mai kyau saboda suna tasowa a ƙarƙashin haɗuwa da iska a cikin mummunan yankin advection a gaban saman matakin. Motsi na iska a tsaye zuwa ƙasa yana ba da bambancin iskõki kusa da farfajiya. Rashin iska yana haifar da dumi a cikin shafi idan aka kwatanta da yanayin da ya gabata sabili da haka bushewa daga gare shi saboda yanayin dangi yana raguwa, wanda ke da tasirin share sama.

 Yankin da ke kusa da wurare masu zafi 
Wani muhimmin tudun yanayi shine tudun subtropical. Jerin tuddai ne kusa da latitude na doki wanda yawancin iskõki masu natsuwa ke nunawa, waɗanda ke aiki don rage ingancin iska a ƙarƙashin axis ta hanyar haifar da hazo da dare, da hauka a lokacin hasken rana sakamakon yanayin da aka samu kusa da wurinsa. Iska da ke saukowa daga saman troposphere yana gudana daga tsakiya a matakin farfajiyar zuwa sama da ƙananan latitudes na kowane hemisphere, yana haifar da iskar kasuwanci da yamma. Yana taimakawa wajen jagorantar Guguwa ta wurare masu zafi da ruwan sama.

 Ridge toshewa 
Block a cikin meteorology sune manyan alamu a cikin Matsin yanayi wanda ke kusan tsayawa, yadda ya kamata "kullewa" ko sake jagorantar guguwa ƙaura. Wadannan tubalan na iya kasancewa a wurin na kwanaki da yawa ko ma makonni, suna sa yankunan da suka shafa su sami irin wannan yanayi na dogon lokaci (misali hazo ga wasu yankuna, sararin sama mai tsabta ga wasu).  Sau da yawa ana danganta tsaunuka na sama da irin waɗannan tubalan, musamman a cikin tubalan Omega.

 Manazarta