Global sea ice area is no longer at a record low for the time of year:

https://sites.google.com/site/arctis...a_byyear_b.png

I am told this does not apply to global sea ice extent. But where to now?

On 20/02/2017 09:01, Alastair wrote:
Global sea ice area is no longer at a record low for the time of year:

https://sites.google.com/site/arctis...a_byyear_b.png

I am told this does not apply to global sea ice extent. But where to now?


Determine what the area ratio of FYI to MYI is over the 3 decades.
I suspect its gone from something like 20:80 to 80:20, ie no structural
integrity

On 20/02/17 09:14, N_Cook wrote:
On 20/02/2017 09:01, Alastair wrote:
Global sea ice area is no longer at a record low for the time of year:

https://sites.google.com/site/arctis...a_byyear_b.png


I am told this does not apply to global sea ice extent. But where to now?


Determine what the area ratio of FYI to MYI is over the 3 decades.
I suspect its gone from something like 20:80 to 80:20, ie no structural
integrity

The change in wind direction in the Arctic has dragged colder air into
the E Greenland and Barents Seas. This has increased the ice in the area
and so 2017 has jumped above the 2016 curve.However, this has also
probably had the effect of driving more old ice out of the Arctic
through the Fram Strait.

--
Graham P Davis, Bracknell, Berks. [Retd meteorologist/programmer]
Web-site: http://www.scarlet-jade.com/
Never approach a bull from the front, a horse from the rear,
or an idiot from any direction! [Irish proverb]

On Monday, 20 February 2017 09:01:21 UTC, Alastair wrote:
Global sea ice area is no longer at a record low for the time of year:

https://sites.google.com/site/arctis...a_byyear_b.png

I am told this does not apply to global sea ice extent. But where to now?

I am glad that you pointed out that term area although i must suppose it will bypass the intellect of a lot of the posters to this thread

I don't envy you your job of educating idiots even though they are brainwashed into your line of reasoning.

On 20/02/2017 10:34, Graham P Davis wrote:
On 20/02/17 09:14, N_Cook wrote:
On 20/02/2017 09:01, Alastair wrote:
Global sea ice area is no longer at a record low for the time of year:

https://sites.google.com/site/arctis...a_byyear_b.png



I am told this does not apply to global sea ice extent. But where to
now?


Determine what the area ratio of FYI to MYI is over the 3 decades.
I suspect its gone from something like 20:80 to 80:20, ie no structural
integrity

The change in wind direction in the Arctic has dragged colder air into
the E Greenland and Barents Seas. This has increased the ice in the area
and so 2017 has jumped above the 2016 curve.However, this has also
probably had the effect of driving more old ice out of the Arctic
through the Fram Strait.


An interesting thread on a possible explanation of recent Arctic weather
trends
http://forum.arctic-sea-ice.net/inde...html#msg103766

On 20/02/2017 09:14, N_Cook wrote:
On 20/02/2017 09:01, Alastair wrote:
Global sea ice area is no longer at a record low for the time of year:

https://sites.google.com/site/arctis...a_byyear_b.png


I am told this does not apply to global sea ice extent. But where to now?


Determine what the area ratio of FYI to MYI is over the 3 decades.
I suspect its gone from something like 20:80 to 80:20, ie no structural
integrity

Not so sharp a change, proportion of FYI : MYI, 1985 36% to 2016 75%,
but enough to explain the structural problems in the Arctic, ie
relatively minor storms and heat rapidly depletes the peripheral sea-ice
each year

http://www.nature.com/news/incredibl...rchers-1.21163
.... Arctic researchers say that the observations from the Norwegian
project will help to fill gaps in knowledge about the rapidly changing
region. Thirty years ago, the majority of the winter ice in the Arctic
ocean was thick multi-year ice that grew over multiple winters. But now,
more than three-quarters of the ocean in late winter is covered by much
younger and thinner first-year ice. ...
and
http://nsidc.org/arcticseaicenews/fi...e5-350x618.png

On 21/02/2017 08:39, N_Cook wrote:
On 20/02/2017 09:14, N_Cook wrote:
On 20/02/2017 09:01, Alastair wrote:
Global sea ice area is no longer at a record low for the time of year:

https://sites.google.com/site/arctis...a_byyear_b.png



I am told this does not apply to global sea ice extent. But where to
now?


Determine what the area ratio of FYI to MYI is over the 3 decades.
I suspect its gone from something like 20:80 to 80:20, ie no structural
integrity

Not so sharp a change, proportion of FYI : MYI, 1985 36% to 2016 75%,
but enough to explain the structural problems in the Arctic, ie
relatively minor storms and heat rapidly depletes the peripheral sea-ice
each year

http://www.nature.com/news/incredibl...rchers-1.21163

.... Arctic researchers say that the observations from the Norwegian
project will help to fill gaps in knowledge about the rapidly changing
region. Thirty years ago, the majority of the winter ice in the Arctic
ocean was thick multi-year ice that grew over multiple winters. But now,
more than three-quarters of the ocean in late winter is covered by much
younger and thinner first-year ice. ...
and
http://nsidc.org/arcticseaicenews/fi...e5-350x618.png


Unfortunately ,as this stuff is nordocentric, cannot find the ratio of
MYI : FYI down south, other than this passing mention, no reason to
assume any different to the north situation

http://adrian.fritztech.com/category/antarctica/page/3/
Drake Passage snapshot 2015

.... This year has just been so very odd. We have had a lot of ice, but
most of it was pancake ice (very newly formed) or surprisingly thin
first year-ice. We have seen very little multi-year ice which is what
is needed to keep the animal populations down here healthy. The past
few years almost all of the ice has melted out in the summer heat, so
it never gets a chance to build up. The summers are hotter longer, so
the ice starts forming later during the winter. It really shouldn’t be
a surprise that the first year ice is noticeably thinner this year; at
the start of winter this region recorded a record setting high
temperature of 63 F. Here is hoping that some of of this lovely newly
formed ice sticks around until next year. ...