Law Columbia

OCTOBER 25, 2024

Delayed action on emissions cuts may require even more (and more expensive) CDR – the 2024 United Nations Emissions Gap Report released this week found that 2023 greenhouse gas emissions set a new record, and current emissions reduction pledges for 2030 are insufficient to meet temperature goals.

Carbon Dioxide 128

Carbon Dioxide Government Ocean 2013 128

Real Climate

AUGUST 9, 2021

The radiative forcing bar chart has gone full circle: Almost every IPCC report has a version of the radiative bar chart showing the contributions over the historical period of all the different forcings (greenhouse gases, aerosols, solar, etc.). Oddly enough this is most reminiscent of the very first bar chart that appeared in Hansen et al.

Sea Level 361

Sea Level 2012 Radiation Ocean 361

Real Climate

NOVEMBER 11, 2023

A friend asked me if a discussion paper published on Statistics Norway’s website, ‘ To what extent are temperature levels changing due to greenhouse gas emissions? ’, was purposely timed for the next climate summit ( COP28 ). I don’t know the answer to his question. But this discussion paper is problematic for sure.

Sea Level 326

Sea Level Greenhouse Climate Change Atmosphere 326

Real Climate

AUGUST 12, 2021

And since the first IPCC estimates published in 2013, we have learned a lot and have gotten much better at estimating remaining carbon budgets. IPCC reported carbon budgets for the first time in 2013. in 2018, but they represent a significant update since AR5 in 2013. In the 2018 IPCC Special Report on Global Warming of 1.5°C

2018 358

2018 Climate Change 2013 2014 358

Real Climate

AUGUST 9, 2021

On their own, our greenhouse gas emissions would have caused a much higher warming, were it not for the masking effect of aerosol pollution. warmer than pre-industrial times (here defined as 1850-1900). Obviously, this goes most of the way to 1.5? of warming and human influence is pretty much the sole contributor to this observed warming.

Paris Agreement 363

Paris Agreement 2030 2018 2015 363

HumanNature

JANUARY 30, 2025

We breathe oxygen from the atmosphere, weather systems distribute water, and the ozone in the upper atmosphere protects us from harmful radiation. One of the most well-known ways we have impacted our atmosphere is through the emission of greenhouse gases, which have adversely affected our climate. 47 1002210031 (2013). [7]

Ozone 52

Ozone Fossil Fuels Atmosphere Ground-Level Ozone 52

Physics World

OCTOBER 6, 2021

This figure will increase to nearly half of the world’s population by the end of the century, the authors say, even with drastic reductions in greenhouse-gas emissions. On balance, clouds nearer the stratosphere warm us, whereas low-lying clouds tend to cool us because their greenhouse effect is smaller. Limiting warming to 2?°C

Cooling 133

Cooling Atmosphere Climate Change Greenhouse 133