Tag Archives: Coasts

Tipping point for climate action?

Recently the Climate Commission issued a report in its The Critical Decade series on Extreme Weather looking at the issues of

  • Heat
  • Bushfires
  • Rainfall
  • Drought, and
  • Sea level rise.

At Radio National’s The World Today Professor Lesley Hughes, a Macquarie University ecologist, talked to Eleanor Hall.

The report looks at extreme weather experience in recent times, such as that documented in the Commission’s report The Angry Summer, puts it in a broader context using the latest science and then uses that as a window to project into the future. The message is plain. The climate has shifted, expect more and more extreme weather and we need to act now.

we really need to view all these events not in isolation but as part of a trend for the future. We need to prepare for them and we need to do our absolute best to cut greenhouse gases to stabilise the climate to prevent them getting to the point at which we cannot adapt.(Emphasis added)

Continue reading Tipping point for climate action?

Climate clippings 70

Stuff happens. We have a household of three with separate access to our online service and last week the youngest member blew our monthly usage budget downloading games, 11 days out from when it renews automatically on 17 March. So the speed became truly painful. Bigpond have given us a once only ‘goodwill’ 2 gigs to go on with. Trouble is, by he time I found out what was going on we’d already used a third of it.

Trouble also is that when the speed slows my email connection just doesn’t happen.

Anyway I’ve prepared a CC for this week from material to hand, then I’m going to disappear to preserve my email.

1. You’ve been told

When a link came through on a feed about a conference on what the planet would be like with 4C warming it looked a bit familiar. Then I noticed the date – October 2009. The link is now broken, but the conference is here. There’s a lot of good material in the presentation downloads, mostly depressing, some of which I looked at before things gummed up.

In the article it said that Hans Joachim Schellnhuber, who advise Angela Merkel on climate change, had dropped in President Obama’s top people, who told him that the political system couldn’t cope with what he was saying about the science. He wasn’t impressed. Continue reading Climate clippings 70

Climate clippings 48

Greenland ice loss

The rate continues to accelerate, according to Skeptical Science.

It looks ugly, but see comment 24 and the correction @ 27. Doubling the rate each decade will give you 3,200 gt each year by 2050. But that’s still only a bit less than 9mm pa of sea level rise, according to my calculations. Concerning, certainly, but not yet catastrophic. Continue reading Climate clippings 48

Climate clippings 38

Germany’s expensive switch to renewables

Following the decision to phase out nuclear Germans are being told that achieving 35% renewables by 2020 will only cost 1c per kilowatt hour, or the price of a latte per month. Others calculate the cost at five times that amount, or an additional cost of €175 ($250) a year, a figure confirmed by an internal estimate making the rounds at the Economics Ministry.

Electricity customers already pay more than €13 billion this year to subsidize renewable energy. PV solar receives almost half all renewable energy subsidies, even though it makes up less than one 10th of total green electricity production, or 1.9% of total production.

What do they say about governments picking winners? Continue reading Climate clippings 38

Climate clippings 37

UN Security Council accepts climate change as a threat to global security

The best outline I could find was at Deutsche Welle. What we got was a Presidential Statement rather than a resolution, but one that had to be voted on and accepted by members. Russia had been opposed, saying it would lead to increased politicisation. China wanted climate change addressed as part of the development agenda. There are two main outcomes:

The final statement expressed “concern that possible adverse effects of climate change may, in the long run, aggravate certain existing threats to international peace and security.”

It also requested UN Secretary-General Ban Ki-moon to include information on possible climate change impacts in his regular reports on global trouble-spots.

There’s more background here, when the cause seemed lost. Continue reading Climate clippings 37

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Antarctic research team with DC3

East Antarctic ice sheet sits on rivers and lakes

The Science Show reported on a new survey of East Antarctica published in nature.

probably something like the Northern Territory area was actually below 500 metres below sea level, and if you look at the deepest bits, something like the size of Tasmania was more than one kilometre deep.

The implication is that at some stage the sheet will melt faster than previously thought.

The lakes are formed through thermal heat from below.

See also here. Continue reading Climate clippings 30

Climate clippings 17

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.

The permafrost giant is stirring

We predict that the PCF [permafrost carbon flux] will change the Arctic from a carbon sink to a source after the mid-2020s and is strong enough to cancel 42–88% of the total global land sink. The thaw and decay of permafrost carbon is irreversible…

Continue reading Climate clippings 17

Climate clippings 11

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.

The world’s reefs are in serious danger

Last December Charlie Veron said:

Reefs are the ocean’s canaries and we must hear their call. This call is not just for themselves, for the other great ecosystems of the ocean stand behind reefs like a row of dominoes. If coral reefs fail, the rest will follow in rapid succession, and the Sixth Mass Extinction will be upon us — and will be of our making.

Now at Climate Progress we are told that the current season looks like the second worst on record. This is how the Australian sea surface temperature has been going;

Australian sea surface temperature

Looks inexorable.

If ocean temperatures and ocean acidity continue to rise in Australian waters at the same pace as has occurred over the past 100 years, the Great Barrier Reef will be in significant danger by 2050.

See also Skeptical Science. Continue reading Climate clippings 11

Climate clippings 5

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.

Cancun’s beaches are washing away

Indeed they are.

Rising sea levels and a series of unusually powerful hurricanes have aggravated the folly of building a tourist destination atop shifting sand dunes on a narrow peninsula.

Two huge dredgers are being used to pump tons of sand from offshore sandbars. Continue reading Climate clippings 5

Climate clippings

In this post I have included a brief mention of a number of news items relating to climate change. It doesn’t preclude treating any of these topics in a separate post.

It can also serve as an open thread.

Continue reading Climate clippings