Daya daga cikin abubuwan mamakin yanayi shine parhelion. Lamari ne na sararin samaniya wanda rana ta haifar dashi, kodayake kuma ana iya ɗaukarsa wani lamari na asalin falaki. Yawanci yakan bayyana ne a ƙarƙashin wasu keɓaɓɓun yanayin muhalli kuma na ɗan gajeren lokaci.
A cikin wannan labarin zamu gaya muku menene parhelion, yadda ake kafa shi da kuma irin tasirin da yake yi.
Menene parhelion?
Nau'i ne na yanayi wanda rana ke haifarwa. Gananan haske ne guda biyu waɗanda ke samarwa a bangarorin biyu na rana yayin da akwai wani irin gajimare. Nau'ukan gajimare da ake buƙata don parhelion su faru sune irin na cirrus. Wadannan gizagizai suna da kamannin filament kuma wasu daga cikinsu suna kama da flakes na auduga. Don irin wannan yanayi na yanayi ya faru, waɗannan nau'ikan gajimare dole ne su wanzu tunda sun ƙunshi lu'ulu'u ne na kankara waɗanda suke aiki azaman ƙananan prisanƙara. Waɗannan ƙananan lu'ulu'u ne na kankara suna da alhakin sabunta hasken rana. Wannan yana nufin cewa zasu karkatar da wani bangare na hasken rana zuwa wani wurin da zai kirkiri parhelion.
Wadannan yanayin muhalli suna faruwa ne kwatsam a wasu yankuna na duniya. Kuna iya cewa wannan lamarin yana kama da ganin rana a bayan gajimare amma ba ta da haske fiye da ainihin rana. Ba koyaushe bane idan wannan abin ya faru ake ganin parhelios guda biyu. Sau da yawa wasu lokutan akwai girgijen cirrus kawai a gefe ɗaya na rana kuma siffofin fasili ne kawai. Su ne kawai mahimman haske na halo wanda ke kewaye da rana. Yana da matukar wuya a ga ana halo gaba ɗaya.
Kamar yadda ake tsammani, lamari ne na yanayi wanda ba koyaushe yake zama iri ɗaya ba. Wasu lokuta parhelion yana bayyana kamar wuri mai haske zagaye. Da wadannan nau'ikan siffofi ne rana ke bayyana kadan. A gefe guda, a wasu lokuta za mu iya samun ƙarin tsayi a tsaye ko ya bazu a launuka na bakan gizo. A wasu yanayi ne kawai zaka iya ganin wasu gutsuttsura da suka fi ƙanƙan da bakan gizo. Dole ne in dame wadannan gutsutsura da bakan gizo tunda parhelion koyaushe yana bayyana kusa da rana, yayin bakan gizo ya bayyana a gefen sama daura da rana.
Yaushe majina zata bayyana
Har zuwa lokacin da ba a san komai game da wannan yanayin na yanayi ba, ba a yin la'akari da shi. Koyaya, da zarar mun san wanzuwar majami'ar, to a lokacin ne zamu fara mai da hankali ga wannan lamarin. Ana iya ganin shi sau da yawa fiye da yadda yake tsayawa. Galibi ana ganinta da yamma ne ko kuma da safe lokacin da rana ta kasance a can kasa.
Parhelion yawanci yana bayyana daidai lokacin da take son samun digiri 22 daga rana, saboda kusurwar da ake sanya fitilar haske a ciki. Kuna iya samun wannan. Sararin samaniya inda ake yin haka: abu na farko shine sanya hannu gaba gaba gaba da bude hannu. Lokacin da rana ta rufe da hannu zamu ga cewa parhelion yakamata ya kasance kusan inda ƙarshen ɗan yatsan yake nuni. Ana iya cewa muna auna sama da tafin hannunmu. Idan akwai gizagizai masu jujjuya a cikin wannan bangare, akwai yuwuwar majami'ar zata samar. Ana iya samunsa duka dama da hagu na rana ko duka biyun.
Kalmar parhelio ta fito ne daga Girkanci para-Helios. Ana iya fassara wannan azaman kama da rana. Kodayake ba shi da yawa sosai, a wasu lokuta ana iya samun majami'ar wata. Tasirin iri daya ne kuma yadda za'a kamo shi iri daya. Matsalar wannan ita ce ana iya ganin sa lokacin da wata ya cika kuma dole ne gizagizai su kasance a wuri domin samun damar ƙarancin haske daga wata.
Historia
Kodayake ba shi da tsayi sosai, wannan abin yana da alama tun rubuce yake tun zamanin da. Misali na wannan shine sunan shi a cikin littafin farko na La República. Anan zamu iya samun haruffa daban-daban waɗanda ke cikin tattaunawar falsafa. A cikin wannan tattaunawar zaku iya ganin yadda ɗayan haruffa suka tambaya game da wani yanayi wanda aka lura dashi a cikin garin Rome. Wannan lamarin ana kiransa Parhelio kuma yana magana ne akan wani al'amari wanda za'a iya ganin "rana biyu" da ido mara kyau.
A yau mun san cewa wannan ba gaskiya bane tun Su lu'ulu'u ne na kankara waɗanda ke da alhakin sake hasken rana.
Mutane da yawa ba su san dalilin da ya sa ake samun ƙarin wannan ba a lokacin hunturu. Ba abin mamaki bane cewa a tsakiyar hunturu zamu iya yin rajistar yanayin zafi na -20 a sassa da yawa na duniya kamar arewacin Amurka. A cikin waɗannan yankuna akwai yanayi mai daskarewa tare da mahalli mai tsafta na yanayi wanda ke cikakke don haɓaka ƙarni na irin wannan al'amuran. Samuwar parhelion yana buƙatar samuwar lu'ulu'u na kankara a cikin girgijen cirrus.
Koyaya, waɗannan halos ɗin ba su da alaƙa da bakan gizo, kamar yadda muka ambata a baya. Suna bayyana koyaushe kusa da rana, yayin da bakan gizo ya bayyana a wani gefen kishiyar.
Abubuwan tasiri da tasiri
Abin da wannan abin ke faruwa a sama. Abin da muke tambayar kanmu da yawa ne. Gaskiyar cewa wata ƙungiya ta bayyana a sararin sama tana tsammanin wasu canje-canjen yanayi waɗanda zasu iya faruwa yayin da yanayin ke gabatowa. Kuma shi ne cewa idan muka ga majami'a yana yiwuwa hakan yana tafe cikin guguwa wanda zai kawo gajeren ruwan sama. Yawancin manoma a yankunan duniya inda ake yawan ganin irin wannan al'amari sune waɗanda suke ɗaukar majami'ar a matsayin wata alama ta isowar mummunan yanayi. Girgijen Cirrus a wurare da yawa an ƙirƙira shi ne kawai a cikin kwanaki kafin bayyanar guguwa.
Wasu lokuta, lokacin da halo ke da siffa mafi kyau, ana iya yin hasashen cewa yanayin zai tsananta a cikin awanni 12-24.
Ina fatan cewa tare da wannan bayanin zaku iya koyo game da parhelion a cikin halayenta.