Carbon dioxide’s climate effects confirmed: temperatures followed rising CO2 levels during last deglaciation

There has been much speculation about what exactly caused the end of the last ice age 10,000 years ago. Some say the Earth’s orbital changes were the cause, others say it was an increase in atmospheric CO2. But although a … Continue reading

Tectonic response measured to 2010 Greenland melting record

To notice something is going on with the world’s ice sheets, you could measure melting water runoff, glacier retreat or use satellites and GPS to measure ice volume decline. Just like measuring sea level rise and temperature this all adds … Continue reading

Drop in CO2 heralded the onset of Antarctic glaciation

For about 100 million years all sorts of animals roamed the then subtropical North and South poles. But then suddenly some 34 million years ago during the Eocene everything changed when temperatures fell dramatically in only a 100,000 year timespan, … Continue reading

Lack of Arctic winter ice recovery explained: thermal inversion prevents infrared cooling to space

Is it the albedo effect? Is it increased ice dynamics? Dutch researchers add a third player to better understand why Arctic melting is happening as fast as it is. The clue is in the winter polar night skies, they say.

Climate models underestimate Arctic melting – ice dynamics feedback not taken into account

Yes, indeed, we’re a couple of days late bringing you the news. But this could be an important update to our Arctic melting coverage. It’s feedback-driven (after all), American and French researchers say.

Ice age riddle nr2: If Lake Agassiz drained at wrong time, what caused Younger Dryas?

In our first ice age riddle a couple of days ago we looked at the link between CO2 rise and ice retreat, after the last ice age had reached its max, some 18,000 years ago.

Arctic sea ice has reached new melting record – doesn’t NSIDC say

Today is September 14 2011, the day the Climate Reality Project makes a stand against the ‘new normal of climate denial.’ Over 24 times zones there will be 24 climate presentations in which public attention will be focused on the … Continue reading