Real Climate

JULY 10, 2022

Step 1: There is a natural greenhouse effect. This means that there is an upward surface flux of IR around (~398 W/m 2 ), while the outward flux at the top of the atmosphere (TOA) is roughly equivalent to the net solar radiation absorbed (~240 W/m 2 ). Step 2: Trace gases contribute to the natural greenhouse effect.

Radiation 309

Radiation 2022 Greenhouse Atmosphere 309

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 296

Sea Level Greenhouse Climate Change Atmosphere 296

Physics World

OCTOBER 26, 2021

It found that greenhouse-gas emissions emitted by the lab in 2018 was 223 800 tonnes of carbon-dioxide equivalent. The move comes just days before the 2021 United Nations Framework Convention on Climate Change Conference of Parties (COP26) in Glasgow, UK, which will be attended by world leaders. Eager to learn.

Climate Change 120

Climate Change Carbon Dioxide Radiation Renewable Energy 120

Real Climate

SEPTEMBER 19, 2022

The CERES estimates of the top-of-atmosphere radiative fluxes are available from 2001 to the present. 2021) also reported on a two decade estimate of Earthshine measurements which appear to confirm a small decrease in albedo (and decrease in reflected short wave (SW) radiation). The simplest model for the greenhouse effect.

Radiation 321

Radiation Atmosphere Greenhouse 2001 321

Real Climate

AUGUST 12, 2021

10 from IPCC (2021). 2 from IPCC (2021). in Canadell et al (2021). Source: Data from IPCC (2014), Rogelj et al (2018), and IPCC (2021). Source: Data from IPCC (2014), Rogelj et al (2018), and IPCC (2021). in the underlying chapter; Canadell et al (2021)). Source: Figure SPM.10 Source: Table SPM.2

2018 322

2018 Climate Change 2013 2014 322

Physics World

OCTOBER 12, 2021

Indeed, it is understandable why people might fear radiation given that you can’t see it – yet the same can be said of the air that we breathe. Despite these benefits, nuclear power tends to suffer from relatively poor public perception and not knowing it is low carbon could be due to a lack of education.

Nuclear Power 140

Nuclear Power Clean Energy Greenhouse Radiation 140

Real Climate

NOVEMBER 18, 2023

Also missing is any realization that clouds also contribute to the greenhouse effect (roughly 25% of the total) and so whether cloud changes warm or cool depends very much on where the clouds are (high clouds have a very different effect than low clouds for instance).

Radiation 69

Radiation 2003 2020 Climate Change 69