Shortwave (meteorology)

Rashin gajeren lokaci tare da haɗin vorticity.

A shortwave ko shortwave trough ne wani embedded kink a cikin trough / ridge pattern. Tsawon ma'auni ya fi karami fiye da na kuma an saka shi a cikin longwaves, wanda ke da alhakin mafi girman sikelin (Mescale synoptic) tsarin yanayi. Shortwaves na iya ƙunshe da ciki ko samun su a gaba longwaves kuma suna daga mesoscale zuwa sikelin synoptic. Sau da yawa ana haifar da gajeren lokaci ta hanyar tafkin sanyi ko matakin gaba na sama. Ana kiran gajeren raƙuman ruwa a matsayin matsakaicin vorticity.[1]

Yanayi da tasirin

Sau da yawa ana danganta gajeren iska da iska mai dumi (WAA) ko iska mai sanyi (CAA), wanda ke tasiri ga zafin jiki. Saboda yadda suke motsa iska a kusa da su da kuma yadda iska ke motsawa daga gare su, gajeren raƙuman ruwa suna samar da ƙuƙwalwar ƙuƙwalwa mai kyau da ƙuɓɓugar ƙuƙwasawa mai kyau, bi da bi. Kafin gajeren lokaci akwai babban ɗagawa saboda bambanci daga advection mai kyau (PVA). Wannan ɗagawa sau da yawa yana haifar da hazo. A cikin yanayin da aka rufe, ɗagawa da aka samar ta hanyar gajeren lokaci na iya sanyaya Layer na juyawa sakamakon saurin fadada iska (kayan sanyaya na adiabatic), yana ba da damar zurfi, mai laushi.

Ci gaban convective

Rashin gajeren lokaci shine dalilin ɗagawa, ko tilasta, wanda ake buƙata don ci gaban tsawa da convection. Convection yana da yawa a kusa da gajeren lokaci saboda ba wai kawai suna ba da tilastawa ba, amma kuma suna da alaƙa da tsarin da ke ba da wasu sinadaran don samar da tsawa, kamar rashin daidaituwa, shear iska, da helicity. Har ila yau, gajeren lokaci yana haifar da Yanayi mai tsanani saboda yawanci ana inganta sinadaran ta hanyar gajeren lokaci saboda waɗannan sun fi ƙarfin matsakaicin yanayi da tsarin yanayi da ke kewaye da su.

Haɗin waje

• Menene gajeren ruwa?. Abubuwan da suka shafi Haby.
• NWS.noaa.gov/glossary/index.php?word=shortwave+trough" id="mwQQ" rel="mw:ExtLink nofollow">Rashin gajeren lokaci. NWS Glossary.