The case for climate change

NASA's Jet Propulsion Laboratory and the U.K. Meterological (Met) Office are combining forces — bringing together the expertise of observing Earth from space on the one hand, and the expertise of developing climate and weather models and forecasting on the other. Professor Julia Slingo OBE, Chief Scientist of the U.K. Meteorological Office, recently visited JPL and gave us her perspective on climate change and the state of the climate.

In your view, what's the most compelling piece of evidence for global warming?
The most compelling piece of evidence that the public are aware of is the increase in the surface temperature of the planet. And that's certainly very compelling, but I don't think it's enough on its own to make the case. What's really important is to look at all sorts of other aspects of the climate system that are now providing us with an increasingly compelling case that something is happening to our climate and that it is indeed warming. Things like the decline in Arctic sea ice and the warming not just of the surface of the oceans, but down to several hundred meters in depth.

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