Bambanci tsakanin anticyclone (A) da squall (B)
Guguwa da guguwar iska na nufin matsi daban-daban na yanayi. Ana auna matsin yanayi a cikin millibars (mbar). Milibar daidai yake da dubu daya na 1, kuma mashaya daidai yake da yanayi guda 1 (ATM). Yana da mahimmanci a san abin da millibar yake nufi, tun da bambancin miliyoyin mil ko aasa a cikin yanki yana haifar da hadari da anticyclones.
Kafin shiga bayani dalla-dalla, masu hana yaduwar cuta da guguwa masu sauƙin ganewa akan taswira suna ɗaukar isobars. Idan akwai matsin lamba fiye da yadda aka saba, misali 1024 mb, to idan zamuyi maganar anticyclone. Lokacin da matsin ya yi ƙasa, misali millibars 996, kamar yadda yake a hoto, muna magana ne game da hadari. Daga nan, yanayin da ke hade da matsi daban ya bambanta.
A anticyclone
Yawancin lokaci zamu iya kwatanta shi da tsayayyen lokaci, tare da sararin sama mai haske da Rana. Matsinsa ya kusan daga millibars 1016 ko sama da haka.
Iska a cikin anticyclone ya fi kwanciyar hankali fiye da iskar da ke kewaye da ita. Hakanan, iska yana saukowa daga sararin samaniya, yana samar da abin da ake kira "raguwa." Rage kuɗi kamar haka, yana hana samuwar hazo. Hanyar iska tana sauka ta banbanta da kwatankwacin inda muke. A Yankin Arewa, yana jujjuyawa zuwa cikin hanyar agogo. Kuma a kudancin duniya, akasin haka.
Guguwa
Sabanin ga anticyclone, yana da alaƙa da tsayayyen yanayi, gajimare da ruwan sama. Matsin sa bai kai miliyon 1016 ba.
Shugabancin juyawar iska a cikin hadari, wanda a wannan yanayin ya tashi zuwa sama, yana yin hakan ta kishiyar anticyclone. Wato, a kowane gefen agogo a gefen kudu da kuma gefen agogo zuwa arewacin hemisphere.
Galibi suna kawo iska, kuma suna rage zafin jiki, duka lokacin rani da damuna. Yawanci hakan na faruwa ne saboda shigar ƙananan hasken rana, yayin da gajimare ke nuna su, yana hana su wucewa.