Tag Archives: National Snow and Ice Data Center

Greenland ice melt overestimated due to satellite data algorithm issue

Posted on March 21, 2013 by

This is an interesting admission: The melt extent algorithm used by Greenland Ice Sheet Today has been overestimating the melt extent, and as a result, daily images posted on this site in February and March may have indicated melt where … Continue reading →

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Posted in Greenland ice sheet | Tagged , | 87 Comments

Sea Ice News Volume 3 #15 – Arctic sea ice doubles in October

Posted on November 6, 2012 by

In Sea Ice News #14, we noted that the Arctic refreeze was the fastest ever. According to NSIDC, Arctic sea ice extent doubled in October. Arctic rapidly gaining winter ice Ice extent doubled in October. The rate of increase since … Continue reading →

Posted in Sea Ice News | Tagged , , , | 80 Comments

Tisdale: How Much of an Impact Does the Atlantic Multidecadal Oscillation Have on Arctic Sea Ice Extent?

Posted on September 24, 2012 by

Last week I asked Bob Tisdale to take a hard look at potential correlations between the AMO and Arctic sea ice extent, and he rose to the challenge – Anthony Guest post by Bob Tisdale This post presents reference graphs … Continue reading →

Posted in AMO, Arctic, Sea ice | Tagged , , , , | 79 Comments

Greenland Ice Sheet albedo drops ‘off the bottom of the chart’ – but look closer as to why

Posted on July 21, 2012 by

Got this in the mail just as I posted my open thread announcemnt. I’m too busy this weekend to say much else except to post this tweet from Bill McKibben and some past blog excerpts and invite discussion. Bill McKibben … Continue reading →

Posted in Albedo, Carbon soot, Glaciers, Greenland ice sheet | Tagged , , , , , , , | 131 Comments

Reanalyses find rising humidity in the Arctic

Posted on June 29, 2012 by

Direct, reliable observations of atmospheric conditions stretch as far back as the mid seventeenth century, with otherwise consistent records being punctuated by periodic updates in methods, practitioners, and observational equipment. To bridge these shifts in technique and technology, scientists develop … Continue reading →

Posted in Arctic | Tagged , , , , , , , | 41 Comments

Sea Ice News: NSIDC’s Dr. Walt Meier on this Arctic ice season

Posted on June 20, 2012 by

Guest post by Dr. Walt Meier, National Snow and Ice Data Center Winds, Temperatures, and Arctic Sea Ice Extent As the summer sea ice melt season gets into high gear, I thought I’d do a post on sea ice processes … Continue reading →

Posted in Arctic, Sea Ice News | Tagged , , , , , , , | 88 Comments

“…the Arctic Ocean could be nearly ice-free at the end of summer by 2012″

Posted on May 12, 2012 by

Its always important to remember what has been predicted by the elders of science, and to review those predictions when the time is right.  In four months, just 132 days from now at the end of summer on the Autumnal … Continue reading →

Posted in Arctic, Sea ice | Tagged , , , , , , , , , | 198 Comments

Sea Ice News Volume 3, #2

Posted on March 18, 2012 by

In today’s report Arctic Sea Ice on the rise again, presently in the range of normal levels Antarctic Sea Ice is at slightly above normal levels Why is early satellite data for Arctic and Antarctic Ice extent referenced in the … Continue reading →

Posted in IPCC, Sea Ice News | Tagged , , , , , , , , , | 207 Comments

Sea Ice News: rapid re-refreeze of the Arctic in October, 40% faster than normal

Posted on November 7, 2011 by

From NSIDC: A rapid freeze-up Arctic sea ice extent increased rapidly through October, as is typical this time of year. Large areas of open water were still present in the Beaufort and Chukchi seas at the end of the month. … Continue reading →

Posted in Arctic, Sea Ice News | Tagged , , | 94 Comments

Quote of the Week – Grist thinks spontaneous human combustion might be a convincing bit of evidence for AGW

Posted on October 24, 2011 by

There’s been some wild claims out there the past few days since BEST released their results in a media blitzkrieg on October 20th prior to peer review.  But this one from Grist writer Jess Zimmerman has to rank up there … Continue reading →

Posted in GLOC, Humor, Quote of the Week, Satire | Tagged , , , | 80 Comments

Times Atlas Greenland ice fubar: Death by Wikipedia?

Posted on September 20, 2011 by

UPDATE: The publisher of the Atlas has issued a clarification and apology: The Times Atlas is renowned for its authority and we do our utmost to maintain that reputation. In compiling the content of the atlas, we consult experts in … Continue reading →

Posted in Greenland ice sheet | Tagged , , , | 57 Comments

‘Atlasgate’ deepens: NSIDC rejects being a specific source of The Times Atlas 15% Greenland ice loss claim

Posted on September 19, 2011 by

The Guardian has this article up today: The claim was this: “for the first time, the new edition of the (atlas) has had to erase 15% of Greenland’s once permanent ice cover – turning an area the size of the … Continue reading →

Posted in Arctic, Greenland ice sheet | Tagged , , , , , | 112 Comments

Arctic ice refreezing after falling short of 2007 record

Posted on September 16, 2011 by

By Joseph D’Aleo, CCM, AMS Fellow The arctic ice appears to have bottomed out at a level 6.4% higher than the 2007 record. Mark Serreze of the National Snow and Ice Data Center says the Arctic could be ice-free in … Continue reading →

Posted in Arctic, Sea Ice News | Tagged , , , , , | 89 Comments

In other news…Arctic sea ice has turned the corner

Posted on September 15, 2011 by

We all need a break from the Gore-a-thon, so here’s some cheering news. As I reported on Sept 13th, Sea Ice News: Arctic sea ice “may” have turned the corner sea ice appeared then to have turned the corner for the … Continue reading →

Posted in Arctic | Tagged , | 76 Comments

Sea Ice News: Arctic sea ice “may” have turned the corner

Posted on September 13, 2011 by

UPDATES: New NSIDC data and a press release from them added below. While some folks (Joe Romm in particular) are touting the recent University of Bremen press release suggesting a new record low has been met, declaring record minimum Arctic extent … Continue reading →

Posted in Arctic, Sea ice, Sea Ice News | Tagged , , , , , , | 209 Comments

Sea Ice News: Arctic sea ice extent making a sharp right turn

Posted on August 3, 2011 by

Over the past few days, Arctic sea ice extent has braked dramatically in the daily loss rate and now has made a sharp right turn, which is rather unusual. Here’s the JAXA extent: And here is a close up view, … Continue reading →

Posted in Sea Ice News | Tagged , , , , | 201 Comments

August WUWT Arctic sea ice outlook submitted to ARCUS

Posted on August 1, 2011 by

This month, we have nearly a perfect bell curve distribution of votes, except for a minority vote that says less than 4.5 million sq kilometers. 750 votes were cast. PAN-ARCTIC OUTLOOK – WUWT (acronym for WattsUpWithThat.com)

Posted in Arctic, Forecasting, Sea ice | Tagged , , , | 50 Comments

August ARCUS forecast poll – What will the September NSIDC Arctic minimum extent be?

Posted on July 27, 2011 by

Once again, I’m going to give WUWT readers an opportunity to make a forecast for submission, based on voting. See the poll at the end.  I’ll run this poll each month in the week before the deadline, and we’ll see … Continue reading →

Posted in Arctic, Sea ice | Tagged , , | 136 Comments

Antarctic Ice shelf collapse – “worse than we thought”

Posted on July 26, 2011 by

Researchers Provide Detailed Picture of Ice Loss Following Collapse of Antarctic Ice Shelves An international team of researchers has combined data from multiple sources to provide the clearest account yet of how much glacial ice surges into the sea following … Continue reading →

Posted in Antarctic, Satire, Sea ice | Tagged , , | 132 Comments

Sea Ice News – July ARCUS forecast published

Posted on July 14, 2011 by

Figure 1. Distribution of individual Pan-Arctic Outlook (July Report) values for September 2010 sea ice extent. Credit: Arctic Research Consortium of the U.S. (ARCUS). Click to enlarge. Download High Resolution Version of Figure 1. Thank you to all contributors of … Continue reading →

Posted in Arctic, Sea ice | Tagged , , | 112 Comments