Friday melts, weird weather and whales (it’s been a long time…)

By Gareth Renowden 22/08/2014


It’s been a long time since my last post: apologies for that. You may blame a bad cold, an urgent need for root canal work, the peak of the truffle season (and truffle tours for culinary heroes1 ), the start of pruning and political distractions for the drop off in activity here. Normal service should resume in the near future, but meanwhile here are a few of the things that have caught my eye over the last week or two. You may therefore consider this an open thread – and given what follows, somewhat more open than usual…

The political distraction, of course, has been the response to Nicky Hager’s book, Dirty Politics. I haven’t yet read the book — it’s queued up on the iPad — but as everyone now knows, it concerns the sordid activities of right-wing attack blogger Cameron Slater, and in particular his close ties with senior government politicians. Slater has a long record of climate denial — often lifting material from µWatts or the Daily Mail to support his ignorant bluster — but the revelation that he published paid material for PR companies masquerading as his own opinion begs a question: was there a similar motivation for his climate denial posts?

As far as I can tell, Hager’s book only mentions climate once, in a discussion of Slater’s pet hates, but it will be interesting to see if the “raw data” now being drip fed into the public domain by the hacker2 who obtained Slater’s emails and Facebook chat messages contains any hints of another motivation — if it indeed it does go beyond the knee-jerk denial so common on the far right of NZ politics. For the record, I should note that Slater once used the words “twat” and “fraud” in close conjunction with my name. It would appear that both are likely to apply rather more aptly to him.

The real world, of course, obeys the laws of physics rather than the wishful thinking of political smear merchants, and out here the signs of continued warming are unmistakable. Europe’s Cryosat has detected a big increase in ice sheet melt at both poles, for example:

A new assessment from Europe’s CryoSat spacecraft shows Greenland to be losing about 375 cu km of ice each year.

Added to the discharges coming from Antarctica, it means Earth’s two big ice sheets are now dumping roughly 500 cu km of ice in the oceans annually.

“The contribution of both ice sheets together to sea level rise has doubled since 2009,” said Angelika Humbert from Germany’s Alfred Wegener Institute.

The atmosphere is also responding to energy accumulation by delivering an astonishing sequence of heavy rainfall events and flash floods. The BBC reports that 160 people have died in floods in Nepal and northern India, while in Hiroshima 36 people have died in landslides triggered by rain falling at rates of 100mm per hour (Japan Times). In Sweden, heavy rain is causing “catastrophic” flooding, while last month northern Italy bore the brunt of torrential downpours. Flash floods also hit parts of Arizona earlier this week. Nor should we forget the heavy rains that brought damaging floods to Northland in July. For a roundup of July’s weather, check out Chris Burt’s blog at Weather Underground.

Some of these rainfall extremes may be explained by the poleward expansion of the tropics, bringing warmer wetter air into the mid latitudes, as this new paper explains. Some of that tropical air may have been tickling Britain, which apart from experiencing some flash flooding has also just recorded its warmest January to July period since records began. And as a WMO conference found this week: “rising temperatures will have a “multiplying effect on weather events as we know them”.

Finally, and in brief: Earth Overshoot Day shot past this week – earlier than ever; warming may be hiding in the Atlantic; Choiseul in the Solomon Islands becomes the first town to relocate because of sea level rise; and The Wireless is running lots of good climate material this week.

  1. See also: why.
  2. @whaledump on Twitter, see here for why whale dumps are important for climate.