Category Archives: Extent

Gross Deception About MASIE and the Sea Ice Index

February 28, 2016ExtentGWPFAAA, MASIE, NALOPKT, NIC, NSIDC, Paul Homewood, Ron Clutz, SII, Walt MeierJim Hunt

Our title for today is a reference back to a 2015 article by Paul Homewood on his “Not A Lot Of People Know That” blog, in which he told a load of old porky pies about the National Snow and Ice Data Center’s graphs of Arctic sea ice extent. Only last week Mr. Homewood cooked up another pile of porky pies concerning the Danish Meteorolical Institute’s Arctic sea ice extent metric. Now he has turned his pie baking skills to the Multisensor Analyzed Sea Ice Extent (MASIE for short), which is “a prototype collaborative product of the National Ice Center and NSIDC”.

The “DMIGate” Dodo is Pushing up the Daisies

February 25, 2016ExtentDMI, DMIGate, Extent, Judith Curry, MIZ, Monty PythonJim Hunt

Our title this morning is but a brief extract from a conversation I started on Judith Curry’s “Climate Etc.” blog about (believe it or not!) the effects of large wind driven swells on the “Marginal Ice Zone” of sea ice in the Arctic:

DMI, MASIE and the Sea Ice Index – An Interview With Walt Meier

February 22, 2016ExtentAnthony Watts, DMI, Extent, MASIE, NALOPKT, NASA, NSIDC, Paul Homewood, Ron Clutz, SII, Walt MeierJim Hunt

For some reason best known to himself Anthony Watts has jumped on the “DMIGate” bandwagon started by Paul Homewood over on this side of the Atlantic a few days ago. In his latest article Mr. Watts quotes with approval the “Not A Lot Of People Know That” article which we have already covered in some depth.

Global Sea Ice Extent at Lowest *Ever Level

February 18, 2016ExtentAnthony Watts, Christopher Monckton, DMI, Extent, NSIDC, Willie SoonJim Hunt

A few days ago we reported that the Cryosphere Today global sea ice area metric had fallen to the “lowest *ever” level since their records began in 1979. CT area just fell to yet another all time low once again. Today we are able to bring you the news that NSIDC global sea ice extent also achieved “lowest *ever” status today, at 16.707 million square kilometers. Here’s the graph to prove it:

Arctic Sea Ice Area and Extent Lowest *Ever for the Date

February 3, 2016ExtentArea, CT, Extent, JAXA, NSIDCJim Hunt

We’ve recently been speculating about the effect on the sea ice in the Arctic of varying amounts of weather borne heat, wind and waves. The cumulative effect of all the assorted storms is that today a variety of sea ice metrics are all at their lowest ever level for the date, since their respective records began.

New Year 2016 Arctic Meltdown Update

January 11, 2016ExtentArea, Barents Sea, Concentration, CT, DMI, Extent, Greenland Sea, JMA, Kara Sea, NSIDC, Steven Goddard, Storm Frank, Temperature, Thickness, Tony Heller, Videos, WavesJim Hunt

On January 1st 2016 the 15% concentration threshold daily Arctic sea ice extent metric reported by the United States National Snow and Ice Data Centre reached the lowest ever level for the first day of any year since their satellite derived records began in 1979. A couple of days later the more familiar 5 day trailing averaged extent also reached the lowest ever level for the date:

The 2015 Arctic Sea Ice Minimum Extent

September 2, 2015ExtentAMSR2, Area, DMI, Extent, JAXA, MeteoCiel, NSIDCJim Hunt

We’ve now entered the month of September, the month in which Arctic sea ice extent and area reach their annual minimum levels, historically at least. To set the scene, here’s the extent graph from the Japan Aerospace Exploration Agency (JAXA) for September 1st, based on data from the AMSR2 sensor on board their SHIZUKU satellite.:

Arctic Sea Ice Approaching Normal?

August 11, 2015ExtentAl Gore, Extent, Steven GoddardJim Hunt

According to “Steve Goddard” it is! Hot off the presses over at “Real Science” we are told that:

DMI hasn’t updated their 30% concentration map for 10 days, but their 15% concentration map is just about at the 1979-2000 mean.

Trouble Looming for the Arctic?

May 29, 2015ExtentACNFS, Extent, GFS, NSIDC, PIOMAS, Steven Goddard, Thickness, Tony Heller, US NavyJim Hunt

Once again our title for today is inspired by the indefatigable “Steven Goddard”. His latest Arctic themed article on his so called “Real Science” blog is entitled “Trouble Looming For Arctic Alarmists“, and he’s following his usual formula of showing an image or two interspersed with unrelated text. Here’s Tony’s textual take on things, interspersed with our graphic retorts:

Arctic Sea Ice Fails To Track 2005/2006

May 21, 2015ExtentCT, DMI, Extent, JAXA, NSIDC, Steven Goddard, Tony HellerJim Hunt

The pseudonymous “Steve Goddard” proudly proclaims this morning that “Arctic Sea Ice Continues To Track 2005/2006“. Tony Heller states:

Experts say that the Arctic is in a “death spiral” – but for the past two years it has been tracking 2005/2006 – the years with the two highest summer extents of the past decade.

The Great White Con

Putting the Arctic sea ice record straight