Tag Archives: climate sensitivity

Climate model shows possibility of multiple years of Arctic sea ice growth – or faster decline

Computer simulations of the US National Center for Atmospheric Research indicate that the natural Arctic climate variability, like seasonal and annual variations in pressure systems, wind patterns and precipitation or cloud cover, could be larger than previously thought.

Ongoing paleo study may help tune CO2 climate sensitivity

Here on Bitsofscience.org we’ve discussed the Paleocene-Eocene Thermal Maximum (PETM) – that sudden CO2 and methane-induced peak climate warming (or ‘hyperthermal’) 55.8 million years ago of around 6 degrees over 20,000 years – on several occasions, because it offers an … Continue reading →

Hansen: paleoclimate shows 2 degrees climate target leads to multiple meters of SLR

Comparing previous interglacial periods, like the Eemian, to the present geological epoch, the Holocene, shows slight average temperature rises are strongly magnified around the poles. Even under the 450 Scenario 21st century sea level rise could reach multiple meters. “Current … Continue reading →

Geoengineering La Niña

According to the WMO the current La Niña episode will continue to exist for at least another 2-4 months. Other sources state it may last until 2012. This La Niña could be the strongest in decades and is likely to … Continue reading →

NASA: temperature is all about CO2

Two new studies by NASA’s Goddard Institute for Space Studies help improve basic quantitative understanding of the Earth’s greenhouse system. The one, ‘CO2: The Thermostat that Controls Earth’s Temperature’, is a Goddard climate model based study (lead-author Andrew Lacis) to … Continue reading →