When is Global Warming Significant?

[Andre]

Hi,

Peter Wadhams interview

http://www.earthfiles.com/news/news.cfm?ID=910&category=Environment

juju

http://ocean.mit.edu/~giulio/publications/Boccaletti_et_al_GRL_2005.pdf

Boccaletti, et al (2005) The vertical structure of ocean heat transport. Geophys. Res. Lett., 32, L10603, doi:10.1029/2005GL022474, May 17

Abstract

"One of the most important contributions the ocean makes to Earth's climate
is through its poleward heat transport: about 1.5 PW or more than 30% of
that accomplished by the ocean-atmosphere system (Trenberth and Caron,
2001). Recently, concern has arisen over whether global warming could affect
this heat transport (Watson et al., 2001), for example, reducing high
latitude convection and triggering a collapse of the deep overturning
circulation (Rahmstorf, 1995). While the consequences of abrupt changes in
oceanic circulation should be of concern, we argue that the attention
devoted to deep circulations is disproportionate to their role in heat
transport. For this purpose, we introduce a heat function which identifies
the contribution to the heat transport by different components of the
oceanic circulation. A new view of the ocean emerges in which a shallow
surface intensified circulation dominates the poleward heat transport."... cont

 

[juju]

Hi,

This may not be significant globally, but to me and my friends it is sure a pointer.

Our local climate has not had a day in the last 10 years when the temperature did not get to freezing.

15 years ago we had at least two weeks every winter where the temperature did not get to freezing.

This is a warming locally, that may be related to a global warming trend.

I live in the mountains of southern Oregon at about 3400 ft altitude.

juju

 

[selfAdjoint]

Our local climate has not had a day in the last 10 years when the temperature did not get to freezing.

Did you mean when it did get down to freezing? That seems to be the sense you intended.