Tagged: arctic

Gone for good: Arctic Ocean ice free all year by the 2040s? - Hot Topic

Gareth Renowden Oct 18, 2010

A few days ago I used a combination of Arctic sea ice volume data from the University of Washington’s PIOMAS model and NSIDC sea ice extent numbers to project that the Arctic Ocean would be effectively ice-free in late summer within ten years. The key to that exercise was the rate at which the volume [...] … Read More

All around the world - Hot Topic

Gareth Renowden Sep 23, 2010

The Arctic Ocean has been circumnavigated by sailing vessels in a single season for the first time. The Norwegian trimaran Northern Passage reports that it has passed 74ºN, traditionally regarded as the eastern end of the NW Passage, and is now sailing into Baffin Bay heading for Pond Inlet. The Russian boat Peter 1 is [...] … Read More

Monday miscellany - Hot Topic

Gareth Renowden Sep 13, 2010

I‘m going to be away from my desk for a few days this week, so here’s a few interesting things to read and reflect on. First up: Wellington’s hosting this year’s New Zealand Soil Carbon Conference at Te Papa from Wednesday to Friday. Keynote speakers are Tim Flannery and Christine Jones, and topics to be [...] … Read More

On fire inside a snowball - Hot Topic

Gareth Renowden Aug 15, 2010

Fire: NOAA’s National Climate Data Centre has posted its report on global climate for July (press release). The combined global land and sea surface temperature of 16.5ºC was the second warmest in the NOAA record, 0.66°C above the average for the last 100 years of 15.8°C. The January to July period was the warmest in [...] … Read More

It breaks - Hot Topic

Gareth Renowden Aug 09, 2010

The Petermann Glacier in northwest Greenland has calved a massive “ice island” from its floating tongue (the largest in northern hemisphere), as the MODIS image above demonstrates. The island is approximately 260 square kilometers in area, making it equivalent to (arbitrary choice of geographical comparison appropriate to blog) eleven Rangitoto Islands (or four Manhattans, or [...] … Read More

No energy for change - Hot Topic

Gareth Renowden Jul 28, 2010

Gerry Brownlee’s draft energy strategy for New Zealand is an interesting read, but not perhaps in the way the government intended. As Bryan discussed in his comment on the strategy, Brownlee puts mining and drilling up front and centre, and relegates environmental and carbon issues to a definite second place in government priorities. You might [...] … Read More

Something for the weekend - Hot Topic

Gareth Renowden Jul 02, 2010

Lazy blogging. Just links to a few things I think you might find interesting to read (and a performance to enjoy) while I get some work done. First up: Swiss Re, the giant reinsurance company, has published a handy new report called Climate sceptic arguments and their scientific background (pdf), written by Swiss scientist Urs [...] … Read More

Arctic sea ice projections: 6 billion dead within a year (it really is grim up North) - Hot Topic

Gareth Renowden Jun 25, 2010

The first set of ARCUS/SEARCH projections for the September Arctic sea ice minimum have been released, and amid all the mundane statistical, heuristical, and modelistical musing there’s a remarkable effort — and I really do mean remarkable — by one Charles Wilson. Here’s the graphic showing all of the submitted forecasts. See if you can [...] … Read More