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Messages - Wipneus

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1
Arctic sea ice / Re: Latest PIOMAS update (January update)
« on: January 05, 2018, 06:01:18 PM »
Update of the Fram volume export graph. Some thick ice exiting is pushing up the number in the second half of December. Note that average export in December is about 0.25 [1000km3 /month]

2
Arctic sea ice / Re: Latest PIOMAS update (January update)
« on: January 05, 2018, 11:17:17 AM »
The thickness map on 31-12-2017 compared with recent years.

3
Arctic sea ice / Re: Latest PIOMAS update (January update)
« on: January 05, 2018, 08:58:43 AM »
The thickness animation for the last month.

It seems you need to click, even with size less than 700x700, for the animation to start.

4
Arctic sea ice / Re: Latest PIOMAS update (January update)
« on: January 05, 2018, 08:54:29 AM »
PIOMAS has updated, both the official volume data and the gridded thickness data are available.
Latest value ( 2017-12-31) is  14.418 [1000 km3], third lowest for the day after 2016 and 2016.

Attached the volume and volume anomaly graphs, click for larger sizes.

5
Antarctica / Re: PIG has calved
« on: December 23, 2017, 01:13:24 PM »
Detail of the widening SW crack.

6
Arctic sea ice / Re: Latest PIOMAS update (Mid December update)
« on: December 20, 2017, 10:13:30 AM »
Some thicker ice can be seen moving thru the Fram Strait. This is what it means for the volume export.

7
Arctic sea ice / Re: Latest PIOMAS update (Mid December update)
« on: December 20, 2017, 10:09:51 AM »
Volume and volume anomaly graphs.

8
Arctic sea ice / Re: Latest PIOMAS update (Mid December update)
« on: December 20, 2017, 08:52:35 AM »
The mid-monthly (1-15 Dec) update of PIOMAS gridded sea ice thickness is here.

Calculated volume on the 15th is 12.6 [1000 km3], third lowest after 2016 and 2012.

The animation is attached.

9
Advance, cracking and calving on the Zachariae front 19th Oktober - 6th December.

10
Antarctica / Re: PIG has calved
« on: December 11, 2017, 06:16:09 PM »
On the SW side new cracks have formed.

12
Arctic sea ice / Re: Latest PIOMAS update (December update)
« on: December 06, 2017, 11:12:48 AM »
Daily Fram volume export.

13
Arctic sea ice / Re: Latest PIOMAS update (December update)
« on: December 06, 2017, 10:37:24 AM »
Thickness map for 30 November 2017, compared with previous years.

14
Arctic sea ice / Re: Latest PIOMAS update (December update)
« on: December 06, 2017, 10:08:01 AM »
Here is the animation of November 2017.

15
Arctic sea ice / Re: Latest PIOMAS update (December update)
« on: December 06, 2017, 10:00:40 AM »
PIOMAS has updated, both the official volume data as the gridded thickness data.

Attached the anomaly graph, 2017 volume takes the third lowest place after 2016 and 2012.

16
Antarctica / Re: PIG has calved
« on: November 20, 2017, 06:35:49 PM »
Good optical images are scarce at the moment: Sentinel 2 images have not been uploaded since the beginning of October while Landsat images are mostly cloudy. This Landsat 8 image from the 17th is still hazy, but the new crack can yet easily made visible by enhancing the contrast.

17
Arctic sea ice / Re: Latest PIOMAS update (November mid monthly update)
« on: November 19, 2017, 06:41:01 PM »
The regional volume data was uploaded as:
https://sites.google.com/site/arctischepinguin/home/piomas/data/PIOMAS-regional.txt.gz

Attached the update of the calculated Fram volume export.

18
Arctic sea ice / Re: Latest PIOMAS update (November mid monthly update)
« on: November 19, 2017, 06:30:25 PM »
Volume calculated from thickness data, Nov 1-15:

array([ 7.73,  7.79,  7.85,  7.94,  8.05,  8.16,  8.25,  8.32,  8.4 ,
        8.53,  8.67,  8.8 ,  8.94,  9.07,  9.18])

Attached are the voluem and anomaly graphs.



19
Arctic sea ice / Re: Latest PIOMAS update (November mid monthly update)
« on: November 19, 2017, 06:27:18 PM »
Mid monthly update of PIOMAS gridded thickness data is in: 1-15 November.

Attached is the animation.

20
Antarctica / Re: Sea Ice Extent around Antarctica
« on: November 14, 2017, 05:03:59 PM »
Updating the NSIDC NT extent and area graphs. Both are second lowest for the day of year (but far above 2016 still).

21
Arctic sea ice / Re: 2017 sea ice area and extent data
« on: November 11, 2017, 05:30:26 PM »
Update of the NSIDC NT extent and area graphs. A week of higher than average extent increases, with area just joining the spurt in the last couple of days.

22
Arctic sea ice / Re: 2017 sea ice area and extent data
« on: November 10, 2017, 02:03:31 PM »
... what's going on. Extent gain heading south from the CAA ?

Here is a 7-day delta map, NSIDC NT sea ice concentration. Lots of (dark) blue shows where the extent gains are. Interesting there are also some small regions with reds both on the Atlantic and the Pacific side.

23
Arctic sea ice / Re: Global Sea Ice Extent According to NSIDC
« on: November 08, 2017, 02:36:10 PM »
Apologies for mentioning area. NSIDC NT area is definitely making the impression of a nose dive. It dropped 4-sigma below the 1981-2010 mean, which happened before ( during the satellite era) only during one year: 2016.

24
Antarctica / Re: Sea Ice Extent around Antarctica
« on: November 06, 2017, 04:45:09 PM »
Update of the NSIDC NT extent and area graphs. The way down has been found, area is among the lowest years again.

25
Arctic sea ice / Re: 2017 sea ice area and extent data
« on: November 05, 2017, 02:04:09 PM »
Updating the NSIDC NT global sea ice extent and area graphs. They are getting interesting, have the annual maximums been reached? If so they are clearly second lowest behind the extraordinary 2016.

26
Arctic sea ice / Re: Latest PIOMAS update (November update)
« on: November 03, 2017, 07:52:21 PM »
Life is coming back with respect to Fram export.

27
Arctic sea ice / Re: Latest PIOMAS update (November update)
« on: November 03, 2017, 07:47:52 PM »
Daily volume and volume anomaly graphs. PIOMAS volume is 4th lowest now after being 5th earlier this month.

The Google site software gives me problems today, so no uploading to the site today (same for other daily updated data and graphs as well).


28
Arctic sea ice / Re: Latest PIOMAS update (November update)
« on: November 03, 2017, 07:25:36 PM »
Gridded thickness data has updated, the "official" volume data not yet.

Late here, I will post some stuff now, rest tomorrow.

Here is the October animation.

29
Consequences / Re: Global Surface Air Temperatures
« on: October 28, 2017, 12:08:12 PM »
Its a while since I updated my Hadcrut graph with projected 2017 temperature.

Hadcrut had a version bump from 4.5 to 4.6. Most changes have to do with more stations, covering a bigger percentage of the earth. The most important consequence appears to be that 2016 is now clearly the hottest year, like most other GST calculations.

Latest update includes September. The projected annual 2017 temperature will very likely be third warmest also in the HadCrut calculation.

30
Antarctica / Re: PIG has calved
« on: October 28, 2017, 11:46:32 AM »
The disintegration of the PIG calving is subject of today's NASA Earth Observatory "image of the day":
https://earthobservatory.nasa.gov/IOTD/view.php?id=91203

One consequence is:
None of the fractured pieces are large enough to be named and tracked by the U.S. National Ice Center, which has removed B-44 from their table of tracked bergs.

That was quick.

31
Antarctica / Re: Sea Ice Extent around Antarctica
« on: October 27, 2017, 03:13:51 PM »
Well, today both graphs seem to be accepted. Same comment: no on the way down yet.

32
Uploading PNG attachments (as I have been doing many times before) I now get:

Your attachment has failed security checks and cannot be uploaded. Please consult the forum administrator.

It is this file:

https://drive.google.com/open?id=0B8NUHa4P2gmlS1p2V0tLZklsQzg



33
Antarctica / Re: Sea Ice Extent around Antarctica
« on: October 27, 2017, 08:29:06 AM »
Updating NSIDC NT extent and area: the way down has not really been found yet.

Unfortunately posting any graph gives:

Your attachment has failed security checks and cannot be uploaded. Please consult the forum administrator.

34
Antarctica / Re: PIG has calved
« on: October 25, 2017, 06:48:02 PM »
More crumbling...

35
Arctic sea ice / Re: 2017 sea ice area and extent data
« on: October 25, 2017, 06:41:53 PM »
It is nor all up: a drop in extent and area from NSIDC NT sea ice concentration today. The UH AMSR2 also has a very small increase in extent and small drop in area.

36
Arctic sea ice / Re: 2017 sea ice area and extent data
« on: October 21, 2017, 10:22:44 AM »
Thanks Juan, here are links to (1) the news and (2) the detailed report, including 21 tables and 106 figures:

https://nsidc.org/the-drift/data-update/noaansidc-releases-sea-ice-index-version-3-0/
https://nsidc.org/sites/nsidc.org/files/files/NSIDC-special-report-19.pdf

37
Arctic sea ice / Re: 2017 sea ice area and extent data
« on: October 19, 2017, 04:03:42 PM »
Double century for NSIDC NT extent.

A one-week delta map attached: red/blue means the concentration went below/over the 15% cut-off. Reddish/bluish means the concentration decreased/increased by more than 7%.

38
Antarctica / Re: Sea Ice Extent around Antarctica
« on: October 18, 2017, 03:37:47 PM »
Update of NSIDC NT extent and area graphs.

39
Arctic sea ice / Re: 2017 sea ice area and extent data
« on: October 18, 2017, 03:26:58 PM »
Updating NSIDC extent and area graphs.

40
Arctic sea ice / Re: Latest PIOMAS update (October, mid month update)
« on: October 18, 2017, 01:51:17 PM »
Volume and volume-anomaly graphs.

41
Arctic sea ice / Re: Latest PIOMAS update (October, mid month update)
« on: October 18, 2017, 01:40:34 PM »
Fram export: a little more than nothing.

43
Arctic sea ice / Re: Latest PIOMAS update (October, mid month update)
« on: October 18, 2017, 09:00:40 AM »
Animation for October thus far.

44
Arctic sea ice / Re: Latest PIOMAS update (October, mid month update)
« on: October 18, 2017, 08:59:41 AM »
Mid month (1-15 Oct) daily gridded thickness data is available.

Volume calculated from this thickness is 5.96 {102km3] on 15th October, fourth lowest for the day after 2012, 2016 and 2011.

Volume 1-15 Oct:
 [1] 5.09 5.13 5.14 5.16 5.17 5.21 5.28 5.36 5.45 5.54 5.64 5.73 5.80 5.88 5.96

45
Antarctica / Re: PIG has calved
« on: October 18, 2017, 08:37:09 AM »
Wipneus....

Could you capture a Sentinel 2 image of the calved berg where these apparent depressions exist closer to the center of the berg) so that we can determine whether the shadows confirm the existence of the depressions?

I have uploaded the full image at
https://drive.google.com/open?id=0B8NUHa4P2gmlNzVrcldTUHQ1TXM

Download this in a sufficiently powerful PC (file size is about 600MB) and view with the Gimp or some other capable software.


46
Antarctica / Re: PIG has calved
« on: October 15, 2017, 11:32:33 AM »
The way a calving crumbles.

47
Antarctica / Re: PIG has calved
« on: October 14, 2017, 03:59:31 PM »
Also the Sentinel 2 season has begun. Breathtaking quality, but too late for the latest calving.

48
Antarctica / Re: PIG has calved
« on: October 11, 2017, 06:29:21 PM »
The calving breaks, partly along known cracks.

49
Antarctica / Re: Sea Ice Extent around Antarctica
« on: October 09, 2017, 03:33:47 PM »
NSIDC extent went up +73k to 18.060M, highest value in 2017. Higher than the 1986 max.

So from an early maximum date, 2017 will now be among the latest ones. Next lowest maximum is held by 2002 at 18.116M (9-9-2002).

Area is still safely staying at the lowest maximum.

50
Arctic sea ice / Re: Home brew AMSR2 extent & area calculation
« on: October 09, 2017, 09:43:16 AM »
SMOS data used to start the season around the 15th, so I can only compare to 2016.

(click the picture)

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