Tag Archives: Africa

Climate clippings 79

Climate clippings_175These posts are intended to share information and ideas about climate change and hence act as an open thread. This post has emphasised science, observations and impacts. Comments, about science, observations impacts, and future predictions are welcome. I do not, however, want a rehash of whether human activity causes climate change.

1. SAM and ENSO divorce

Roger Jones at Understanding Climate Risk has a post on global warming breaking the link between SAM and ENSO, with consequences for our weather.

To help, GMT in the graph means ‘global mean temperature’.


With the global warming signal taken out (top panel), the relationship between ENSO and SAM is strong but with it in, they depart in the late 1960s (lower panel).

There’s also an article in The Age.

From Jones:

So what does this mean for Australia’s climate? It means that an overwhelmingly positive SAM is keeping the westerlies south and contributing to our drier autumn winters and delivering weather typical of the Riverina to southern Victoria according to Cai. Recovery of the ozone layer and reduction in greenhouse gas emission would stabilise this process, rather than continuing to send it south.

In summer it also allows the easterly trades greater access, bringing in more moisture from the tropics and enhancing La Niña summer rainfall. Continue reading Climate clippings 79

Climate clippings 14

These posts include a brief mention of a number of news items relating to climate change. They don’t preclude treating any of these topics at more length in a separate post.

They can also serve as an open thread so that we can keep each other informed on important climate news.

Monckton madness

John Cook at Skeptical Science has a post on two of Monckton’s oft-repeated pieces of climate change misinformation – that climate sensitivity, a measure of how much the earth warms from rising CO2, is so low that you can burn coal with impunity and that sea levels are not going to rise much in the future.

Cook has conveniently collected all his articles on Monckton Myths. Indeed this one lists 15 of them together with their antidotes. For example, Monckton claims that Arctic sea ice loss is matched by Antarctic sea ice gain, whereas in fact Arctic sea ice loss is three times greater than Antarctic sea ice gain.

Oops, said I wasn’t going to mention ice this time. Continue reading Climate clippings 14