I don't think it will effect Californians immediately, It will effect storms along the coasts and we will see a measurable effect at sea level as a result of melting ice caps.
It takes a long time to build and melt an ice sheet, but glaciers can react quickly to temperature changes.
The evolution of the ice sheet, in the context of climate warming, is more rapid than has been predicted by models.
The behavior of the glaciers that dump ice into the sea is the most important aspect of understanding how an ice sheet will evolve in a changing climate. It takes a long time to build and melt an ice sheet, but glaciers can react quickly to temperature changes.
A few years back, we thought ice sheets might grow because of increased precipitation. Now we see that rates of glacier flow are changing. We think the process that is winning overall is the rate of glacier flow.
The Greenland ice sheet's contribution to sea level is an issue of considerable societal and scientific importance.
Climate warming can work in different ways, but generally speaking, if you warm up the ice sheet, the glacier will flow faster.
What we found is this is probably the dominant response of the ice sheets.