article thumbnail

Sea level in the IPCC 6th assessment report (AR6)

Real Climate

The IPCC has introduced a new high-end risk scenario, stating that a global rise “approaching 2 m by 2100 and 5 m by 2150 under a very high greenhouse gas emissions scenario cannot be ruled out due to deep uncertainty in ice sheet processes.”. During the most recent period analyzed, 2006-2018, it’s been rising at a rate of 3.7

Sea Level 363
article thumbnail

Inside the IPCC 61st Plenary Meeting: Debates and Decisions Shaping Climate Policy

Union of Concerned Scientists

Outline of a Methodology Report on Short-Lived Climate Forcers Since 2006, the IPCC has provided methodologies that governments around the world use to estimate their greenhouse gas emissions. The IPCC will issue a call for authors in the upcoming weeks with expected publication of the report in the second half of 2027.

Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

A deep dive into the IPCC’s updated carbon budget numbers

Real Climate

C warming estimate between 1850-1900 and 2006-2015. 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. Warming to date – SR1.5 used a 0.97°C Online].

2018 358
article thumbnail

Why is future sea level rise still so uncertain?

Real Climate

The CPDW is thought to be affected by the shift in the westerly winds around Antarctica which have increased in recent decades due to a combination of greenhouse gas forcing and the polar ozone hole ( Miller et al, 2006 ). 2020) or Sadai et al. Marshall, M. Russell, L.S. Nazarenko, Y. Kostov, G.A. Schmidt, and J. 47, 2020.

Sea Level 255
article thumbnail

Should the official Atlantic hurricane season be lengthened?

Real Climate

But this also raises other questions: 1) Can we expect the season to continue to lengthen as global warming from increasing concentration of globally well mixed greenhouse gas (GWM-GHG) continues to warm the Atlantic SSTs? and European Clean Air Acts and Amendments of the 1970s ( Mann and Emanuel 2006 ; Dunstone et al. Mann, and K.A.

2020 255
article thumbnail

A Trip Down Memory “Train”: A Brief History of Public Transit

Union of Concerned Scientists

This led to an unfair distribution of funds until the FTA’s tribal transit program was implemented in 2006 with a direct funding and application route to the federal government. The Federal Highway Administration’s greenhouse gas performance measure, finalized in late 2023, is one example of this data-driven approach.

article thumbnail

As Soon as Possible

Real Climate

Rind, "How natural and anthropogenic influences alter global and regional surface temperatures: 1889 to 2006", Geophysical Research Letters , vol. Thomson, "Dependence of global temperatures on atmospheric CO 2 and solar irradiance", Proceedings of the National Academy of Sciences , vol. 8370-8377, 1997. Lean, and D.H. 32, 2005.

2005 330