Matsakaicin dumamar yanayi

Kyakkyawan dumama na duniya (GWP) ma'auni ne na yawan zafin da iskar gas ke da shi a cikin yanayi a cikin takamaiman lokaci, dangi da carbon dioxide

Misali, methane yana da GWP sama da shekaru 20 (GWP-20) na 81.2  ma'ana cewa, leak na ton na methane daidai yake da fitar da ton 81.2 na carbon dioxide da aka auna sama da shekaru 20. Kamar yadda methane yana da ɗan gajeren rayuwar yanayi fiye da carbon dioxide, GWP-sa ba shi da yawa a cikin lokaci mai tsawo, tare da GWP-100 na 27.9 da GWP-500 na 7.95.  : 7SM-24: 7SM-24 

Za'a iya lissafin carbon dioxide daidai (="true" id="mwMQ" typeof="mw:Transclusion">CO="true" id="mwLw" typeof="mw:Transclusion">CO="true" id="mwLQ" typeof="mw:Transclusion">CO ko CO2eq ko CO2-e ko CO2-eq) daga GWP. Ga kowane gas, shine nauyin CO2 wanda zai dumi duniya kamar yadda nauyin wannan gas. Don haka yana ba da sikelin gama gari don auna Tasirin yanayi na iskar gas daban-daban. Ana lissafa shi kamar yadda GWP ke sau da yawa na sauran iskar gas.

## Ma'anar
An bayyana yiwuwar dumama duniya (GWP) a matsayin "ƙididdigar da ke auna 2" href="./Radiative_forcing" id="mwPQ" rel="mw:WikiLink" title="Radiative forcing">tilasta radiative bayan fitar da ma'auni na wani abu da aka ba shi, wanda aka tara a kan wani lokaci da aka zaɓa, dangane da na abin da aka ambata, carbon dioxide (CO2). GWP don haka yana wakiltar tasirin tasirin lokuta daban-daban waɗannan abubuwa sun kasance a cikin yanayi da tasirin su wajen haifar da tilasta radiation. " 

Hakanan, *tilasta radiative* ra'ayi ne na kimiyya da aka yi amfani da shi don ƙididdigewa da kwatanta direbobi na waje na canji zuwa ma'aunin makamashi na Duniya. : 1-4 Radiative tilasta shi ne canji a cikin makamashi gudana a cikin yanayi wanda kuma ya haifar da dabi'a ko abubuwan da suka haifar da Canjin yanayi kamar yadda aka auna a cikin watts a kowace murabba'in mita.

### GWP a cikin tsara manufofi
Yayin da gwamnatoci ke haɓaka manufofi don magance hayaki daga manyan hanyoyin GWP, masu tsara manufofi sun zaɓi yin amfani da sikelin GWP na shekaru 100 a matsayin ma'auni a cikin yarjejeniyoyin duniya. Kwaskwarimar Kigali ga Yarjejeniyar Montreal ta kafa matakin duniya na hydrofluorocarbons (HFCs), ƙungiyar manyan mahadi na GWP. Yana buƙatar ƙasashe su yi amfani da saiti na ƙimar GWP100 daidai da waɗanda aka buga a cikin Rahoton Bincike na huɗu na IPCC (AR4).  Wannan yana bawa masu tsara manufofi damar samun ma'auni ɗaya don kwatanta maimakon canza dabi'un GWP a cikin sabbin rahotanni na kimantawa. Ɗaya daga cikin ma'auni na GWP100 ya wanzu: Dokar Shugabancin Yanayi da Kare Al'umma ta Jihar New York tana buƙatar amfani da GWP20, duk da kasancewa ma'aunin daban daga duk sauran ƙasashe da ke shiga cikin sauka na HFCs.

## Ƙididdigar ƙididdiga

### Darajar yanzu (Rahoton Bincike na shida na IPCC daga 2021)

Halin dumama na duniya (GWP) ya dogara da ingancin kwayar halitta a matsayin iskar gas da rayuwarta ta yanayi. GWP ana auna shi dangane da wannan nauyin CO="true" id="mwdQ" typeof="mw:Transclusion">CO kuma ana kimanta shi don takamaiman lokaci. Don haka, idan gas yana da babban (mai kyau) radiative tilasta amma kuma ɗan gajeren rayuwa, zai sami babban GWP a kan sikelin shekaru 20 amma ƙarami a kan sikalin shekaru 100. Sabanin haka, idan kwayar halitta tana da tsawon rayuwar yanayi fiye da CO2 GWP dinta zai karu lokacin da aka yi la'akari da lokaci. An bayyana carbon dioxide don samun GWP na 1 a duk lokacin lokaci.