Negative Emissions Technologies: Difference between revisions

NET image added
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Negative Emission Technologies (NETs), often referred to as Carbon Dioxide Removal (CDR), aim to artificially remove carbon dioxide (CO<sub>2</sub>) from the atmospere, in addition to the natural removal of the atmospheric CO<sub>2</sub> by the natural carbon sinks (such as land and ocean)<ref>IPCC, 2018: Annex I: Glossary [Matthews, J.B.R. (ed.)]. In: Global Warming of 1.5°C. An IPCC Special Report on the impacts of global warming of 1.5°C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty [Masson-Delmotte, V., P. Zhai, H.-O. Pörtner, D. Roberts, J. Skea, P.R. Shukla, A. Pirani, W. Moufouma-Okia, C. Péan, R. Pidcock, S. Connors, J.B.R. Matthews, Y. Chen, X. Zhou, M.I. Gomis, E. Lonnoy, T. Maycock, M. Tignor, and T. Waterfield (eds.)]. In Press</ref>. NETs are not a substitution for climate mitigation and reducing global emission rated, but can be used together with mitigation efforts to speed up the reduction of emissions and reaching the net-zero emission targets sooner. The mitigation pathways consistent with reaching the 1.5C target (reported by the IPCC Special Report on 1.5 Degrees) entail low to moderate levels of CDR (up to 1000 PgC removed)(IPCC SR1.5 Chapter 2). NETs are also an underlying assumption of overshoot scenarios -where a given temperature target is temporarily exceeded and then returned to with the aid of negative emission. While global mean temperature has shown to be largely reversible in response to NETs, other components of climate change (such as sea-level rise, ocean acidification, and other terrestrial and marine ecosystem changes) are not easily reversible on human time-scales, even if extremely large amounts of NETs were implemented.
 
[[File:NETS.jpg|frame|Different groups of negative emission technologies exist<ref>{{Cite journal|last=Minx|first=Jan C|last2=Lamb|first2=William F|last3=Callaghan|first3=Max W|last4=Bornmann|first4=Lutz|last5=Fuss|first5=Sabine|date=2017-03-01|title=Fast growing research on negative emissions|url=https://iopscience.iop.org/article/10.1088/1748-9326/aa5ee5|journal=Environmental Research Letters|language=en|volume=12|issue=3|pages=035007|doi=10.1088/1748-9326/aa5ee5|issn=1748-9326}}</ref> (Source: Figure 1 from Jan C Minx ''et al'' 2017 ''Environ. Res. Lett.'' '''12''' 035007)]]
'''<insert here Figure 1 from: https://iopscience.iop.org/article/10.1088/1748-9326/aa5ee5 with proper attribution>'''
 
Different groups of negative emission technologies<ref>{{Cite journal|last=Minx|first=Jan C|last2=Lamb|first2=William F|last3=Callaghan|first3=Max W|last4=Bornmann|first4=Lutz|last5=Fuss|first5=Sabine|date=2017-03-01|title=Fast growing research on negative emissions|url=https://iopscience.iop.org/article/10.1088/1748-9326/aa5ee5|journal=Environmental Research Letters|volume=12|issue=3|pages=035007|doi=10.1088/1748-9326/aa5ee5|issn=1748-9326}}</ref>: