Climate-driven polar motion: 2003-2015.

Significant anthropogenic-induced changes of climate classes since 1950

Anthropogenic forcings have contributed to global and regional warming in the last few decades and likely affected terrestrial precipitation. Here we examine changes in major Köppen climate classes from gridded observed data and their uncertainties due to internal climate variability using control simulations from Coupled Model Intercomparison Project 5 (CMIP5). About 5.7% of the global total l...

Costs of locomotion in polar bears: when do the costs outweigh the benefits of chasing down terrestrial prey?

Trade-offs between locomotory costs and foraging gains are key elements in determining constraints on predator-prey interactions. One intriguing example involves polar bears pursuing snow geese on land. As climate change forces polar bears to spend more time ashore, they may need to expend more energy to obtain land-based food. Given that polar bears are inefficient at terrestrial locomotion, a...

Polar amplification of climate change in coupled models

The Northern Hemisphere polar amplification of climate change is documented in models taking part in the Coupled Model Intercomparison Project and in the new version of the Community Climate System Model. In particular, the magnitude, spatial distribution, and seasonality of the surface warming in the Arctic is examined and compared among the models. The range of simulated polar warming in the ...

Existence and Measurability of the Solution of the Stochastic Differential Equations Driven by Fractional Brownian Motion

Polar bears and energy-efficient lightbulbs: strategies to bring climate change home

Global climate change is the focus of climate politics organized across scales by a range of organizations. These organizations represent climate change in ways they hope will make the problem relevant to people and thereby inspire political action. The strategies require a choice of objects to bring climate change home to constituents. Some objects are `more local' to certain constituenciesö t...