Real Climate

NOVEMBER 29, 2023

It is 33 years now since the IPCC in its first report in 1990 concluded that it is “certain” that greenhouse gas emissions from human activities “will enhance the greenhouse effect, resulting on average in an additional warming of the Earth’s surface.” It’s not hard to understand. Gray areas show lack of data.

Greenhouse 301

Greenhouse Radiation Cooling Carbon Dioxide 301

Frontiers

AUGUST 7, 2023

Writing as part of Frontiers’ guest editorials series, the study’s lead author – Prof Martin Siegert, deputy vice chancellor of the University of Exeter (Cornwall) – discusses how without there being a rapid shift to net-zero greenhouse gas emissions by 2050, the Antarctic environment will experience ever more drastic changes.

Ocean 98

Ocean Fossil Fuels Radiation Environmental Science 98

Real Climate

OCTOBER 12, 2021

In this, he is in violent agreement with Isaac Held, his colleague at GFDL, and indeed most climate scientists. These were very much the ideas that set the discussions in climate science in the 1990s. As you will recall, Hansen had declared in 1988 that “the greenhouse effect is here!”, Hegerl et al.,

Atmosphere 317

Atmosphere Ocean Greenhouse Climate Change 317

Physics World

OCTOBER 6, 2021

Extreme heat is not just an abstract notion: if we can’t cool our bodies enough, we’re in danger of neurological failure, organ failure and even death, with the risks highest for children and the elderly. On balance, clouds nearer the stratosphere warm us, whereas low-lying clouds tend to cool us because their greenhouse effect is smaller.

Cooling 133

Cooling Atmosphere Climate Change Greenhouse 133

Real Climate

AUGUST 9, 2021

As climate scientists we tend to look at the IPCC reports a little differently than the general public might. Here are a few things that mark this report out from previous versions that relate to issues we’ve discussed here before: Extreme events are increasingly connected to climate (duh!) 1981) which can be seen here.

Sea Level 341

Sea Level 2012 Radiation Ocean 341

HumanNature

APRIL 10, 2023

Student in the Department of Atmospheric Science at Colorado State University Most people remember the water cycle they learned in school: water evaporates from lakes, rivers, and the ocean, air carrying this moisture rises, cools, condenses, and forms clouds, and these clouds precipitate water back down to the surface.

Climate Change 52

Climate Change Paris Agreement Atmosphere Cooling 52