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File:Globalni emise sklenikovych plynu a moznosti jejich snizeni CS.svg

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English: This image shows two graphs. The graphs show how global warming could be limited to below 2 degrees Celsius, relative to the pre-industrial level.

Greenhouse gas emissions

The graph on the left shows how global greenhouse gas (GHG) emissions (measured in carbon-dioxide equivalents, CO2e) need to be reduced to around 20-25 gigatonnes (Gt) CO2e per year, by 2050 (PBL, 2012, p.156). This is equivalent to a reduction in 2050 of between 40-60%, compared to 1990 emissions levels (PBL, 2012, p.157).

The graph shows how emissions are projected to grow in a trend scenario to 60-70 GtCO2e per year, by 2050 (PBL, 2012, p.156). Under the trend scenario, global temperature in 2100 would increase by 2.5-5 °C (PBL, 2012, p.156). In other words, meeting the 2 °C target would require drastic emissions reductions compared to the trend scenario.

Contribution to cumulative emission reduction, 2010-2050

The graph on the right shows how the 2 °C target might be achieved. The graph shows three "pathways" to meet the 2 °C target, labelled "global technology", "decentralised solutions", and "consumption change". Each pathway shows how various measures could contribute to emissions reductions. These are:

For all three pathways, (B), (G) and (H) all make significant contributions to emissions reductions.

Below are the approximate contributions of (A)-(H) to the three pathways. Units are the percentage contribution to cumulative emission reduction between 2010-2050. The first number is the "global technology" pathway, the second "decentralised solutions," and the third "consumption change."

  • (A) 14, 8, 13
  • (B) 24, 25, 26
  • (C) 3, 2.5, 2.5
  • (D) 12, 1, 1.5
  • (E) 8, 7, 8
  • (F) 4, 12, 6
  • (G) 20, 17, 18.5
  • (H) 17, 27, 25
Čeština: Tento obrázek ukazuje dva grafy. Grafy ukazují, jak cs:globální oteplování by mohlo být omezena pod 2 stupně Celsia vzhledem k předindustriální úrovni.

Emise skleníkových plynů

Graf vlevo ukazuje, jak globální emise skleníkových plynů (měřeno v ekvivalentu oxidu uhličitého, CO2) musí být sníženy na přibližně 20-25 gigatun ( Gt ) CO2 za rok do roku 2050 PBL, 2012, s. ((PBL, 2012, p.156).). To je ekvivalentní snížení v roce 2050 v rozmezí 40-60 % ve srovnání s emisemi na úrovni z roku 1990 ( PBL, 2012, str.157).

Graf ukazuje, jak jsou předpokládané emise růst v trendu scénáře změny klimatu na 60-70 Gt CO 2 za rok, v roce 2050 ( PBL, 2012, s. 156). Pod trendovým scénářem, globální teplota v roce 2100 zvýší o 2,5 až 5 ° C ( PBL, 2012, str.156 ). Jinými slovy: splnění cíle 2 °C bude vyžadovat drastické snížení emisí v porovnání s trendovým scénářem.

Příspěvek ke kumulativnímu snížení emisí, 2010-2050

Graf vpravo ukazuje, jak by mohlo být dosaženo cíle ve výši 2 ° C. Graf ukazuje tři "scénáře" pro splnění cíle 2 °C, s označením "globální technologie", "decentralizované řešení" a "změna spotřeby". Každá cesta ukazuje, jak různá opatření mohou přispět ke snížení emisí. Jedná se o :

U všech třech scénářích mají (B), (G) a (H) vždy významný příspěvek ke snižování emisí.

Níže jsou přibližné příspěvky ( A) - ( H ) ve třech scénářích. Jednotky jsou procentní podíl kumulativního snížení emisí mezi 2010-2050. První číslo je scénář " globální technologie ", druhé "decentralizované" řešení a třetí je scénář "změny spotřeby".

  • ( A) 14, 8, 13
  • ( B ) 24, 25, 26
  • ( C ) 3, 2,5, 2,5
  • ( D ) 12, 1, 1,5
  • ( E ) 8, 7​​, 8
  • ( F ) 4, 12, 6
  • ( G ) 20, 17, 18,5
  • ( H ), 17, 27, 25
Date
Source Czech translation from File:Limiting global warming to 2 degrees Celsius - options to reduce greenhouse gas emissions (PBL)EN.svg, origin: Figure 6.14, in: PBL Netherlands Environment Agency (15 June 2012), “Chapter 6: The energy and climate challenge”, in van Vuuren, D. and M. Kok, editors, Roads from Rio+20[1], ISBN 978-90-78645-98-6, p.177, Report no: 500062001. Report website.
Author Pavouk, origin: PBL Netherlands Environmental Assessment Agency
Permission
(Reusing this file)		 Copyright status confirmed by e-mail. See also the PBL website: "Unless stated otherwise, the [Creative Commons — Attribution 3.0 Unported — CC BY 3.0] licence generally applies to the contents of our website. This licence entails the free use (copying, distribution and/or presentation) of any of the PBL publications and derived work, on the precondition of stating the original author – in this case: PBL Netherlands Environmental Assessment Agency. Whenever derived work is used, the user may not give the impression that the PBL Netherlands Environmental Assessment Agency automatically subscribes to the content of such work."
Other versions File:Limiting global warming to 2 degrees Celsius - options to reduce greenhouse gas emissions (PBL)EN.svg (english)
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