Records of the past climates show a wide range of values of the equator-to-pole temperature
gradient, with an apparent universal relationship between the temperature gradient and the …

Abrupt transitions of regional climate in response to the gradual rise in atmospheric
greenhouse gas concentrations are notoriously difficult to foresee. However, such events …

The warmest global climates of the past 65 million years occurred during the early Eocene
epoch (about 55 to 48 million years ago), when the Equator-to-pole temperature gradients …

Relative to the present day, meridional temperature gradients in the Early Eocene age (∼
56–53 Myr ago) were unusually low, with slightly warmer equatorial regions but with much …

Simulating the warmth and equability of past hothouse climates has been a challenge since
the inception of paleoclimate modeling. The newest generation of Earth system models …

In light of the rapid recent retreat of Arctic sea ice, a number of studies have discussed the
possibility of a critical threshold (or “tipping point”) beyond which the ice–albedo feedback …

The early Eocene (~ 55 to 50 Ma) is a time period which has been explored in a large
number of modelling and data studies. Here, using an ensemble of previously published …

The Phanerozoic consists of three mutually exclusive climate states: Icehouse, Greenhouse,
and Hothouse. The Greenhouse is the default state, representing> 70% of the Phanerozoic …

On the Possible Link between Tropical Convection and the Northern Hemisphere Arctic Surface
Air Temperature Change between 1958 and 2001 in: Journal of Climate Volume 24 Issue 16 …

Temperatures in the Arctic have increased by an astounding 1° C in response to
anthropogenic forcing over the past 20 years and are expected to rise further in the coming …