Ra'ayin canjin yanayi

Ra'ayin canjin yanayi
feedback (en) da Abubuwan da suka shafi muhalli
Bayanai
Bangare na	canjin yanayi

Ra'ayin canjin yanayi, yana da mahimmanci a fahimtar ɗumamar yanayi saboda hanyoyin mayar da martani na iya haɓaka ko rage tasirin kowane tilasta yanayi, don haka ya taka muhimmiyar rawa wajen ƙayyade ƙimar yanayi da yanayin canjin gaba. Ra'ayoyin baki daya shine tsari wanda canza adadin daya ya canza na biyu, kuma canjin a karo na biyu ya bijiro na farko. Tabbatacce mai kyau (ko ƙarfafawa) yana ƙarfafa canji a farkon yawa yayin da ra'ayoyi mara kyau (ko daidaitawa) ya rage shi.

Kalmar "tilastawa" na nufin canji wanda ke iya "tursasa" tsarin yanayi zuwa yanayin ɗumama ko sanyaya.^[5] Misalin tilasta yanayi yana ƙaruwa da yanayin iskar gas. Ta hanyar ma'ana, tilastawa suna waje ne da tsarin sauyin yanayi yayin da martani ke ciki; a cikin mahimmanci, ra'ayoyin ra'ayoyi suna wakiltar ayyukan cikin tsarin. Wasu ra'ayoyin zasu iya yin aiki da keɓancewa ga sauran tsarin yanayi; wasu na iya zama an haɗa su sosai;^[6] saboda haka yana iya zama da wahala a faɗi yawan gudummawar da wani tsari yake bayarwa.^[7] Hakanan ana iya tilasta tilastawa ta dalilai na zamantakewar al'umma kamar su "buƙatun makamashin mai ko buƙatar samar da wake." Waɗannan direbobin suna aiki ne a matsayin tilasta tilasta yin amfani da su ta hanyar tasirin kai tsaye da kuma kai tsaye waɗanda suka haifar daga mutum zuwa sikelin duniya.

Karfafawa da ra'ayoyin ra'ayoyi tare suna ƙayyade nawa ne da saurin sauyin yanayi. Babban amsa mai kyau a cikin ɗumamar yanayi shine yanayin ɗumama don ƙara yawan tururin ruwa a sararin samaniya, wanda hakan ke haifar da ƙarin ɗumamar.^[8] Babban ra'ayoyin marasa kyau sun fito ne daga dokar Stefan–Boltzmann, yawan zafin da yake fitowa daga Duniya zuwa sararin samaniya yana canzawa tare da iko na huɗu na yanayin zafin saman da yanayin duniya. Lura da kuma nazarin samfura suna nuna cewa akwai kyakkyawan ra'ayi mai kyau game da ɗumamar yanayi.^[9] Manyan bayanai masu kyau na iya haifar da tasirin da kwatsam ko ba za'a iya sauya shi ba, ya danganta da ƙimar da girman canjin yanayi.^[10][6]

1. ↑ "The Causes of Climate Change". climate.nasa.gov. NASA. Archived from the original on December 21, 2019.
2. ↑ "Climate Science Special Report / Fourth National Climate Assessment (NCA4), Volume I". science2017.globalchange.gov. U.S. Global Change Research Program. Archived from the original on December 14, 2019.
3. ↑ "Summary for Policymakers" (PDF). ipcc.ch. Intergovernmental Panel on Climate Change. 2019. p. 6.
4. ↑ "The Study of Earth as an Integrated System". nasa.gov. NASA. 2016. Archived from the original on November 2, 2016.
5. ↑ US NRC (2012), Climate Change: Evidence, Impacts, and Choices, US National Research Council (US NRC), p.9. Also available as PDF Archived 2013-02-20 at the Wayback Machine
6. ↑ ^{6.0 6.1} Lenton, Timothy M.; Rockström, Johan; Gaffney, Owen; Rahmstorf, Stefan; Richardson, Katherine; Steffen, Will; Schellnhuber, Hans Joachim (2019-11-27). "Climate tipping points — too risky to bet against". Nature (in Turanci). 575 (7784): 592–595. Bibcode:2019Natur.575..592L. doi:10.1038/d41586-019-03595-0. PMID 31776487.
7. ↑ Council, National Research (2 December 2003). Understanding Climate Change Feedbacks. nap.edu. doi:10.17226/10850. ISBN 9780309090728.
8. ↑ "8.6.3.1 Water Vapour and Lapse Rate - AR4 WGI Chapter 8: Climate Models and their Evaluation". www.ipcc.ch. Archived from the original on 2010-04-09. Retrieved 2010-04-23.
9. ↑ Stocker, Thomas F. (2013). IPCC AR5 WG1. Technical Summary (PDF).
10. ↑ IPCC. "Climate Change 2007: Synthesis Report. Contribution of Working Groups I, II and III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Pg 53" (PDF). Cite journal requires |journal= (help)