Cilmi baaris: hawadu ma nadiifsan doonto gawaari la'aan
Sida laga soo xigtay daraasad lagu xusay daabacaadda Britishka ee Auto Express, hawadu way sii ahaaneysaa mid wasakh badan xitaa haddii tirada gawaarida waddooyinka si weyn loo yareeyo. Scotland gudaheeda, tirada gawaarida bishii ugu horeysay ee go'doominta coronavirus ayaa hoos u dhacday 65%. Si kastaba ha noqotee, tani uma horseedin horumar weyn xagga tayada hawada, saynisyahanno ka socda Jaamacadda Stirling ayaa helay.
Waxay ku falanqeeyeen heerarka wasakhda hawada wasakhda wanaagsan ee yar yar ee PM2.5, oo saamaynta ugu weyn ku leh caafimaadka dadka. Tijaabooyinka waxaa lagu qaaday 70 goobo kala duwan oo ku yaal Scotland laga bilaabo 24 Maarso (maalinta ku xigta ku dhawaaqista tallaabooyinka ka dhanka ah cudurka faafa ee Boqortooyada Midowday) ilaa 23 Abriil 2020. Natiijooyinka waxaa la barbardhigay xogta isla muddooyinka 31-maalmood ah saddexdii sano ee la soo dhaafay.
Sannadkii 2,5, isku-darka joomatari ahaan celceliska PM6,6 ayaa la ogaadey inuu yahay 2020 microgram halkii mitir cubic mitir. In kasta oo farqiga weyn ee tirada baabuurta wadada loo maro, natiijadan waxay guud ahaan la mid ahayd tii 2017 iyo 2018 (6,7 iyo 7,4 μg, siday u kala horreeyaan).
Sannadka 2019, heerka PM2.5 wuxuu ahaa mid aad uga sarreeya 12.8. Si kastaba ha ahaatee, saynisyahannadu waxa ay arrintan u nisbeeyeen dhacdo saadaasha hawada ah oo boodhka fiican ee saxaraha saxaraha ahi uu saameeyay tayada hawada Ingiriiska. Haddii aadan xisaabta ku darin xaqiiqadan, markaas sanadkii hore heerka PM2,5 wuxuu ahaa qiyaastii 7,8.
Cilmi baarayaashu waxay ku soo gabagabeeyeen in heerka wasakheynta hawadu ay sidiisii tahay, laakiin heerka nitrogen dioxide uu sii yaraanayo. Si kastaba ha noqotee, dadku waxay waqti badan ku qaataan guryahooda, halkaas oo tayada hawadu ay liidato sababo la xiriira sii deynta walxaha waxyeellada leh ee karinta iyo qiiqa tubaakada.
"Waxaa loo malaynayay in baabuurta yar ee wadada ku jirta ay keeni karto wasakhowga hawada oo yaraada oo ay hoos u dhigto dhacdooyinka cudurada faafa. Si kastaba ha noqotee, daraasaddeena, oo ka duwan Wuhan iyo Milan, ma helin wax caddayn ah oo hoos u dhigaya wasakhowga hawada wanaagsan ee Scotland oo ay weheliso xannibaadda masiibada, "ayuu yidhi Dr Ruraid Dobson.
"Tani waxay tusinaysaa in baabuurtu aanay ahayn wax qayb weyn ka qaata wasakhowga hawada Scotland. Waxaa laga yaabaa in dadku ay halis weyn ugu jiraan tayada hawada ee guryahooda, gaar ahaan haddii uu diyaar yahayCunto karinta iyo sigaarku waxay ka dhacaan meelo xiran oo hawadu liidato,” ayuu raaciyay.
