Inventory na gas mai sanyaya

Kayan gas na greenhouse sune kayan fitarwa na hayaki na hayaki mai hayaki wanda aka haɓaka don dalilai da yawa. Masana kimiyya suna amfani da lissafin hayaki na halitta da na ɗan adam (wanda ya haifar da mutum) a matsayin kayan aiki yayin haɓaka samfuran yanayi. Masu tsara manufofi suna amfani da kayayyaki don haɓaka dabaru da manufofi don rage hayaki da kuma bin diddigin ci gaban waɗancan manufofi. 

Hukumomin sarrafawa da kamfanoni suma suna dogaro da kayayyaki don kafa rikodin bin doka tare da ƙimar fitarwa. Kasuwanci, jama'a, da sauran kungiyoyin masu sha'awar suna amfani da kayayyaki don fahimtar hanyoyin da ke tattare da hayaki.

Ba kamar wasu kayayyakin fitar da iska ba, kayayyakin iskar gas sun hada da ba kawai fitar da hayaki daga nau'ikan tushe ba, har ma da cirewa ta hanyar sinks na carbon. Wadannan cirewa galibi ana kiransu da ƙwaƙwalwar carbon.

Kayan gas din yana amfani da ƙimar dumamar yanayi na duniya (GWP) don haɗa hayaki na iskar gas daban-daban a cikin ƙimar hayaki guda ɗaya.

 Misalan 
Wasu daga cikin mahimman misalai na kayan gas din sun hada da:

 Dukkanin kasashe na Annex I ana buƙatar su bayar da rahoton fitar da hayaki na shekara-shekara da nutsewar iskar gas a ƙarƙashin Yarjejeniyar Tsarin Majalisar Dinkin Duniya kan Canjin Yanayi (UNFCCC) 
 Gwamnatocin kasa da ke cikin bangarorin UNFCCC da / ko Yarjejeniyar Kyoto ana buƙatar su gabatar da lissafin shekara-shekara na duk hayakin gas mai guba daga tushe da cirewa daga sinks.
 Yarjejeniyar Kyoto ta haɗa da ƙarin buƙatu don tsarin kayan aiki na ƙasa, rahoto na kayan aiki, da kuma nazarin kayan aiki na shekara-shekara don ƙayyade bin Mataki na 5 da 8 na Yarjejeniyar.
 Masu haɓaka aikin a ƙarƙashin Tsarin Tsabtace Ci Gaban Yarjejeniyar Kyoto suna shirya kayayyaki a matsayin wani ɓangare na tushen aikin su.

 Lissafin fitar da iskar gas 
Lissafin fitar da iskar gas yana auna adadin iskar gas (GHG) da aka fitar a cikin wani lokaci da wata siyasa ta ba da shi, yawanci ƙasa amma wani lokacin yanki ko birni. Ana amfani da irin waɗannan matakan don gudanar da kimiyyar yanayi da Manufofin yanayi.

Akwai manyan hanyoyi guda biyu, masu rikitarwa na auna hayaki na GHG: samarwa (wanda aka fi sani da yankin) da kuma amfani. Kwamitin Intergovernmental kan Canjin Yanayi ya bayyana hayaki na samarwa kamar yadda yake faruwa "a cikin ƙasa da yankunan da ke waje wanda ƙasar ke da iko". Tushen hayaki na amfani da la'akari da tasirin kasuwanci, wanda ya haɗa da hayaki daga amfani na ƙarshe na cikin gida da waɗanda suka haifar da samar da shigo da shi. Daga hangen nesa na kasuwanci, lissafin fitarwa na amfani shine haka ya juya na lissafin fitar da fitarwa na samarwa, wanda ya haɗa da fitarwa amma ya cire shigo da kayayyaki (Table 1).

 Manazarta