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.

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Greenhouse Radiation Cooling Carbon Dioxide 301

Real Climate

AUGUST 12, 2021

There is no doubt that we have changed Earth’s climate through our activities on a broad range of aspects that includes consequences for the atmosphere, the oceans, snow, ice, Earth’s fauna and ecosystems. The cause of our changing climate is the increase in atmospheric greenhouse gas concentrations that we have released into the air.

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Atmosphere Greenhouse Ocean Sea Level 324

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

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!) 1, SPM, AR5. Johnson, A.

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Sea Level 2012 Radiation Ocean 341

PA Environment Daily

MARCH 29, 2022

Republicans said the final regulations will increase the cost of electricity for individuals and businesses, have a negative impact on jobs and will not significantly reduce carbon pollution. Let us remember, we're not here to debate the issue of climate change. This will benefit the health of many Pennsylvanians.

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Natural Gas Climate Change Electricity Greenhouse 52

ESA

APRIL 11, 2022

This latest report looks at mitigation — or what the world can do to stop pumping greenhouse gases into the atmosphere. It’s the third chapter in the IPCC’s mammoth sixth assessment report, part of a series of studies that summarize the state of climate science and the planet released roughly every seven years. The IPCC said 1.5

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2022 Fossil Fuels Clean Water Act Climate Change 98