neven

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The 2016 melting season in images

The Arctic year started with the warmest January and February on record: The mild winter led to one of the lowest maximums on record, lowest even on some graphs. And then in April, just before the melting season started, things…
This article was posted in Blogs.

In memoriam: Andrew Slater

Last week, NSIDC scientist Andrew Slater died unexpectedly. It goes without saying that the news shocked me, and I wasn't the only one (here's the memorial web page). I had never met him, although we mailed once or twice in…
This article was posted in Blogs.

ASI 2016 update 7: minimum time

During the melting season I'm writing (bi-)weekly updates on the current situation with regards to Arctic sea ice (ASI). Because of issues with data based on the SSMIS sensor aboard DMSP satellites, I mainly focus on higher-resolution AMSR2 data from…
This article was posted in Blogs.

PIOMAS September 2016

Another month has passed and so here is the updated Arctic sea ice volume graph as calculated by the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) at the Polar Science Center: Weather conditions in the past month - the…
This article was posted in Blogs.

2016 Mega-Dipole

As reported in the last ASI update, the forecast Dipole has now set up. Yesterday's last analysis chart provided by Environment Canada, at 18Z, showed the high pressure moving in via the Bering Strait at 1037 hPa, while a rapidly…
This article was posted in Blogs.

ASI 2016 update 6: hell and high pressure

During the melting season I'm writing (bi-)weekly updates on the current situation with regards to Arctic sea ice (ASI). Because of issues with data based on the SSMIS sensor aboard DMSP satellites, I mainly focus on higher-resolution AMSR2 data from…
This article was posted in Blogs.

2016 Arctic cyclone, update 3

Two days have passed since the previous update, and in those two days the storm re-intensified, bottomed out at 971 hPa (slightly higher than the first lowest central pressure of 968 hPa), as can be seen on the image on…
This article was posted in Blogs.

2016 SIPN Sea Ice Outlook: August report

The third and last Sea Ice Outlook of this year has been published. The SIO is organized by the Sea Ice Prediction Network (as part of the Arctic research program 'Study of Environmental Arctic Change', or SEARCH), and is a…
This article was posted in Blogs.

2016 Arctic cyclone, update 2

So, the storm has been raging for a while now. The latest Environment Canada weather map shows it's at 984 hPa. According to this tweet by PhD climatologist Brian Brettschneider a IABP buoy from the University of Washington measured a…
This article was posted in Blogs.

2016 Arctic cyclone, update 1

As announced in ASI 2016 update 5 a very large cyclone is raging in the Arctic, as we speak. According to Environment Canada the storm's current central pressure is 970 hPa, but it was 968 hPa 12 hours ago, which…
This article was posted in Blogs.

ASI 2016 update 5: big cyclone

During the melting season I'm writing (bi-)weekly updates on the current situation with regards to Arctic sea ice (ASI). Because of issues with data based on the SSMIS sensor aboard DMSP satellites, I mainly focus on higher-resolution AMSR2 data from…
This article was posted in Blogs.

1000 Forum members

As Arctic sea ice declines, more and more people learn about it and want to know more. It explains the relative success of this blog ever since its inception in 2010. The spectacular, iconic image of Arctic sea ice loss,…
This article was posted in Blogs.

PIOMAS August 2016

Another month has passed and so here is the updated Arctic sea ice volume graph as calculated by the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) at the Polar Science Center: With a slightly above average drop during July…
This article was posted in Blogs.

2016 SIPN Sea Ice Outlook: July report

The second Sea Ice Outlook of this year has been published. The SIO is organized by the Sea Ice Prediction Network (as part of the Arctic research program 'Study of Environmental Arctic Change', or SEARCH), and is a compilation of…
This article was posted in Blogs.

ASI 2016 update 4: breaking point

During the melting season I'm writing (bi-)weekly updates on the current situation with regards to Arctic sea ice (ASI). Because of issues with data based on the SSMIS sensor aboard DMSP satellites, I mainly focus on higher-resolution AMSR2 data from…
This article was posted in Blogs.

Iced lightning

From a children's book: "In The Legend of Lightning and Thunder, a traditional legend that has been told in the Kivalliq region of Nunavut for centuries, two siblings resort to stealing from their fellow villagers, and inadvertently introduce lightning and…
This article was posted in Blogs.

2016 melting momentum, part 3

Melting momentum, it's what I call the absorption of heat and solar radiation during May and June that does not directly lead to melt and a reduction in ice cover, but rather comes into play during July and August (I had…
This article was posted in Blogs.

PIOMAS July 2016

Another month has passed and so here is the updated Arctic sea ice volume graph as calculated by the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) at the Polar Science Center: As expected after a month of stalling sea…
This article was posted in Blogs.

2016 SIPN Sea Ice Outlook: June report

The first Sea Ice Outlook of this year has been published. The SIO is organized by the Sea Ice Prediction Network (as part of the Arctic research program 'Study of Environmental Arctic Change', or SEARCH), and is a compilation of…
This article was posted in Blogs.

ASI 2016 update 3: crunch time

During the melting season I'm writing (bi-)weekly updates on the current situation with regards to Arctic sea ice (ASI). Because of issues with data based on the SSMIS sensor aboard DMSP satellites, I mainly focus on higher-resolution AMSR2 data from…
This article was posted in Blogs.

2016 melting momentum, part 2

Happy Solstice, everyone! Credit: NASA/Kathryn Hansen The previous post on melting momentum was running long, so here's an addition dealing with compactness, the final piece of information we have to assess the amount of melting momentum. Just before the start…
This article was posted in Blogs.

2016 melting momentum, part 1

Melting momentum, it's what I call the absorption of heat and solar radiation during May and June that does not directly lead to melt and a reduction in ice cover, but rather comes into play during July and August (I had…
This article was posted in Blogs.

ASI 2016 update 2: closing the gap

During the melting season I'm writing (bi-)weekly updates on the current situation with regards to Arctic sea ice (ASI). Because of issues with data based on the SSMIS sensor aboard DMSP satellites, I mainly focus on higher-resolution AMSR2 data from…
This article was posted in Blogs.

PIOMAS June 2016

Another month has passed and so here is the updated Arctic sea ice volume graph as calculated by the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) at the Polar Science Center:   As you can see, as of May…
This article was posted in Blogs.

Persistent Arctic and sub-Arctic warmth

There are a couple of reporters out there who write really good articles about the Arctic, and Alaska Dispatch News' Yereth Rosen is one of them. Just a couple of days ADN published this article of hers on the extreme…
This article was posted in Blogs.

Crisis in the Cryosphere

I recently received an e-mail to draw my attention to a recent two-part feature article on the Scientific American website by Dr. John J. Berger, an independent energy and environmental consultant. The article called Crisis in the Cryosphere is about…
This article was posted in Blogs.

ASI 2016 update 1: both sides

During the melting season I'm writing (bi-)weekly updates on the current situation with regards to Arctic sea ice (ASI). Because of issues with data based on the SSMIS sensor aboard DMSP satellites, I mainly focus on higher-resolution AMSR2 data from…
This article was posted in Blogs.

Beaufort Gyre guest blog

Not an update of current conditions in the Beaufort Sea, but some science for your reading pleasure. This is a guest blog by Alek Petty, a postdoc at NASA’s Goddard Space Flight Center and the University of Maryland, specializing in…
This article was posted in Blogs.

Beaufort final update

This isn't a final update as such, because I will certainly be mentioning events in the Beaufort Sea in upcoming ASI updates. But it is the last in a series of blog posts I have written (one, two and three)…
This article was posted in Blogs.

PIOMAS May 2016

Another month has passed and so here is the updated Arctic sea ice volume graph as calculated by the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) at the Polar Science Center: According to my contact at the PSC the…
This article was posted in Blogs.