Anyone have any idea what's up with the arctic ice maps at the moment?
I try to look at http://www.abmcdonald.freeserve.co.uk/north.htm
frequently and even the source of these maps shows very incomplete
data.


--
Regards, Paul Herber, Sandrila Ltd. http://www.sandrila.co.uk/

On Tue, 24 Feb 2009 18:04:57 +0000, Paul Herber wrote in
well.net

Anyone have any idea what's up with the arctic ice maps at the moment?
I try to look at http://www.abmcdonald.freeserve.co.uk/north.htm
frequently and even the source of these maps shows very incomplete
data.

I spotted that a few days ago and can only guess the fault lies with NOAA.

http://polar.ncep.noaa.gov/seaice/analysis/nh/

--
Mike Tullett - Coleraine 55.13°N 6.69°W posted 24/02/2009 17:16:23 GMT

On Feb 24, 6:04*pm, Paul Herber
wrote:
Anyone have any idea what's up with the arctic ice maps at the moment?
I try to look athttp://www.abmcdonald.freeserve.co.uk/north.htm
frequently and even the source of these maps shows very incomplete
data.

--
Regards, Paul Herber, Sandrila Ltd. *http://www.sandrila.co.uk/* * * * *

Cryosphere Today are also having major problems with missing data see
Anthony Watts http://wattsupwiththat.com/2009/02/2...osphere-today/.
rom the Cryosphere Today website proviso

"February 17, 2009 - The SSMI sensor seems to be acting up and
dropping data swaths from time to time in recent days. Missing swaths
will appear on these images as a missing data in the southern
latitudes. If this persists for more than a few weeks, we will start
to fill in these missing data swaths with the ice concentration from
the previous day. Note - these missing swaths do not affect the
timeseries or any other plots on the Cryosphere Today as they are
comprised of moving averages of at least three days.
Historic snow cover data not displayed on these images. Sea ice
concentrations less than 30% are not displayed in these images. Snow
cover data is displayed only for most recent dates."

http://igloo.atmos.uiuc.edu/cgi-bin/test/print.sh

I did email them weeks ago when ice around Labrador kept coming and
going over the space of days it would seem from Anthony Watts blog its
been going on for well over a month, nearly two in fact.

On Feb 24, 6:43*pm, wrote:
On Feb 24, 6:04*pm, Paul Herber

wrote:
Anyone have any idea what's up with the arctic ice maps at the moment?
I try to look athttp://www.abmcdonald.freeserve.co.uk/north.htm
frequently and even the source of these maps shows very incomplete
data.

--
Regards, Paul Herber, Sandrila Ltd. *http://www.sandrila.co.uk/** * * *

Cryosphere Today are also having major problems with missing data *see
Anthony Wattshttp://wattsupwiththat.com/2009/02/20/sea-ice-sensor-degradation-hits....
rom the Cryosphere Today website proviso

"February 17, 2009 - The SSMI sensor seems to be acting up and
dropping data swaths from time to time in recent days. Missing swaths
will appear on these images as a missing data in the southern
latitudes. If this persists for more than a few weeks, we will start
to fill in these missing data swaths with the ice concentration from
the previous day. Note - these missing swaths do not affect the
timeseries or any other plots on the Cryosphere Today as they are
comprised of moving averages of at least three days.
Historic snow cover data not displayed on these images. Sea ice
concentrations less than 30% are not displayed in these images. Snow
cover data is displayed only for most recent dates."

http://igloo.atmos.uiuc.edu/cgi-bin/test/print.sh

I did email them weeks ago when ice around Labrador kept coming and
going over the space of days it would seem from Anthony Watts blog its
been going on for well over a month, nearly two in fact.

There has been some problems with the satellite data. See:
http://nsidc.org/arcticseaicenews/

The Japanese are still updating their graph:
http://www.ijis.iarc.uaf.edu/en/home/seaice_extent.htm

Cheers, Alastair.

Paul Herber wrote:

Anyone have any idea what's up with the arctic ice maps at the moment?
I try to look at http://www.abmcdonald.freeserve.co.uk/north.htm
frequently and even the source of these maps shows very incomplete
data.



Try http://www.seaice.de/ where there are various sources of ice data.
There's the thumbnails ate the top of the page, The second link has some
useful stuff. I usually go to the 4th link, University of Bremen because of
inertia I suppose - I've been using it for several years.

--
Graham P Davis, Bracknell, Berks., UK. E-mail: newsman not newsboy

On 24 Feb, 19:41, Graham P Davis wrote:
Paul Herber wrote:
Anyone have any idea what's up with the arctic ice maps at the moment?
I try to look athttp://www.abmcdonald.freeserve.co.uk/north.htm
frequently and even the source of these maps shows very incomplete
data.

Tryhttp://www.seaice.de/where there are various sources of ice data.
There's the thumbnails ate the top of the page, The second link has some
useful stuff. I usually go to the 4th link, University of Bremen because of
inertia I suppose - I've been using it for several years.

--
Graham P Davis, Bracknell, Berks., UK. *E-mail: newsman not newsboy

Useful site, thanks. Nice to see the polar bears got some company!

Graham
Penzance (where approx 60% of this months 90.4mm rainfall fell in just
24 hours)

www.sennen-cove.com/lbtdy.htm (earlier today - before it clouded over.)