Support the Arctic Sea Ice Forum and Blog

Author Topic: IJIS  (Read 2659558 times)

Siffy

  • Frazil ice
  • Posts: 179
    • View Profile
  • Liked: 0
  • Likes Given: 0
Re: IJIS/JAXA
« Reply #100 on: June 03, 2013, 06:22:54 PM »
Is this unexpected?

Are you able to post the data for the last two to three years +- a few days either way to compare typical loss?

The below table is the IJIS Extent for dates 27 May - 2 Jun for years 2003 - 2013.  I've highlighted as follows:

RED:  Lowest Extent for that Day
GREEN: Highest Extent for that Day
YELLOW: Median Extent for that Day




Thanks for the reply appreciate the information, it's quite surprising how slow the start to this melt season has been I was kind of expecting a much more rapid onset of melt given just how fractured the ice was during april.

Still it's early days yet and latest weather in the Arctic looks like it's churning the ice even harder so come summer time this could have a very big effect.

Peter Ellis

  • Grease ice
  • Posts: 619
    • View Profile
  • Liked: 33
  • Likes Given: 14
Re: IJIS/JAXA
« Reply #101 on: June 04, 2013, 11:06:21 AM »
Century break today.  Looking at the images, looks like Hudson Bay is finally beginning to go, so I doubt this will be revised upwards.  We can expect a minimum of 30k/day from Hudson Bay up through to the end of June.  Unusually for recent years, the Hudson Bay melt is normal for the time of year - in previous years it's been well ahead of schedule.  This is undoubtedly down to the very cold weather and high snowfall that the US/Canada have had.

In general, the low latitude areas (Hudson, Bering, Ohkotsk) are all on a "normal" rather than an accelerated schedule this year.  This is quite possible all that's necessary to explain the slow (read: normal rate) start to the melt season. These areas are however quite irrelevant to the final summer minimum: I don't see any sensible way in which slow melt in Hudson and Okhotsk can protect the CAB ice.

werther

  • Grease ice
  • Posts: 747
    • View Profile
  • Liked: 31
  • Likes Given: 0
Re: IJIS/JAXA
« Reply #102 on: June 04, 2013, 11:23:21 PM »
Exactly, Peter.
The only relevant region now is within the CAB. I'm inclined to foresee that all the FYI over there will go too, even while we're at day 155 and 11511K SIE. Fourteen weeks of 'normal' weather could do it. Not speaking of 2007 dipoles or GAC2012's...

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #103 on: June 05, 2013, 10:48:57 AM »
IJIS:

11,510,625 km2 (June 3, 2013)  down 122,656 km2 from June 2nd.
Have a ice day!

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #104 on: June 05, 2013, 10:58:21 AM »
IJIS:

11,392,188 km2 (June 4, 2013) down 118,337 km2 from June 3.

39,219 km2 more than 2012.

120,094 km2 more than 2000s average.
Have a ice day!

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #105 on: June 05, 2013, 11:04:08 AM »
IJIS:

It looks like it is taking the same "route" as 2012. The next few days will tell more about where we are heading.
Have a ice day!

OldLeatherneck

  • Grease ice
  • Posts: 554
    • View Profile
  • Liked: 2
  • Likes Given: 0
Re: IJIS/JAXA
« Reply #106 on: June 05, 2013, 01:22:48 PM »
IJIS:

It looks like it is taking the same "route" as 2012. The next few days will tell more about where we are heading.

I've been amazed by the prognosticators who claim we are abound to have a major rebound this year.  2013 is only 40K behind 2012, and if my aging memory serves me correctly, 2012 was a record-setting blowout.

After reading frivolousz21's comment #299 on Short to Medium Term Arctic Sea Ice Conditions Discussion http://forum.arctic-sea-ice.net/index.php/topic,92.250.html#lastPost about the expected high temps on the western coast of Greenland in the next few, we may be in store for some very dramatic ice loss.

[size=8pt
............But look at the Super torch over Canada.  The Hudson is toast. The Canadian Archipelago is going to be totally ravished.

.............Greenland's land ice melt is in the explosion process.  Dipole flow, big sun, Kara melted.  Normal melt season.

.............Oh and again Environment Canada is going to have some epic bust from their forecasts before yesterdays update's.

.............Models show Mid 80s on the Western Greenland coast in two days.  Upper 70s to low 80s tomorrow.

.............the GFS is possibly showing wall to wall super torch on both continents.][/size]
"Share Your Knowledge.  It's a Way to Achieve Immortality."  ......the Dalai Lama

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #107 on: June 05, 2013, 05:13:04 PM »
IJIS:

And another century today, and the 2013 will be below 2012, for the same date!
Have a ice day!

ritter

  • Grease ice
  • Posts: 573
    • View Profile
  • Liked: 24
  • Likes Given: 0
Re: IJIS/JAXA
« Reply #108 on: June 05, 2013, 05:33:59 PM »
IJIS:

And another century today, and the 2013 will be below 2012, for the same date!

That's a pretty quick catch up.

davidsanger

  • New ice
  • Posts: 30
    • View Profile
  • Liked: 0
  • Likes Given: 0
Re: IJIS/JAXA
« Reply #109 on: June 06, 2013, 06:35:27 AM »
Interesting that the June 4, 2012 extent was 11,352,969 which was the highest since 2003..... and then came the rest of 2012

ChrisReynolds

  • Nilas ice
  • Posts: 1764
    • View Profile
    • Dosbat
  • Liked: 20
  • Likes Given: 9
Re: IJIS/JAXA
« Reply #110 on: June 06, 2013, 08:06:59 AM »
2012 was a late peak in CT Area. What seemed to happen was that once the ice was hit by high insolation in June July August it responded 'enthusiastically'.

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #111 on: June 06, 2013, 10:58:22 AM »
IJIS:

11,353,125 km2 (June 4, 2013) 156 km2 above 2012 for same date.

I have a feeling something is wrong with the dates?
I dont think they updated June 5 yet?
« Last Edit: June 06, 2013, 12:14:13 PM by Espen »
Have a ice day!

Jim Pettit

  • Nilas ice
  • Posts: 1175
    • View Profile
  • Liked: 41
  • Likes Given: 11
Re: IJIS/JAXA
« Reply #112 on: June 06, 2013, 01:43:02 PM »
IJIS:

11,353,125 km2 (June 4, 2013) 156 km2 above 2012 for same date.

I have a feeling something is wrong with the dates?
I dont think they updated June 5 yet?

Correct. They did, however, adjust June 4 downward from 11,392,188 km2 to 11,353,125 km2, just 156 km2 below the same date last year. IOW: a statistical tie.

So this is what a recovery looks like, huh?  ;)

kevin_s

  • New ice
  • Posts: 6
    • View Profile
  • Liked: 0
  • Likes Given: 0
Re: IJIS/JAXA
« Reply #113 on: June 06, 2013, 03:20:15 PM »
Is there anything we can read into the late update for 5 June, taken together with the recent century breaks and the downward adjustment of the 4 June number? I'm picturing IJIS/JAXA folks looking at their data with disbelief, wondering if the gargantuan drop they see for 5 June can be real, wanting to be really careful before they post it publicly....

But then I have an overactive imagination, so...? Stuff can be late for a million mundane reasons, I suppose.

OldLeatherneck

  • Grease ice
  • Posts: 554
    • View Profile
  • Liked: 2
  • Likes Given: 0
Re: IJIS/JAXA
« Reply #114 on: June 07, 2013, 04:13:22 AM »
Reasonable Rebound or Collapse Possibilities for 2013 Mean Extent
 
I've been astounded at the number of high/low estimates for the 2103 minimum extent that seem to be beyond the realm of probabilities.  Although I'm not a statistician, I'd thought I look at the past 10 years of IJIS Extent and what the percentage loss or gain was from one year to the next.  From 2003 to 2012, there were 6 years of ice extent loss and 3 years of gain.  The  two years of most loss were 2007 (25.9%) and 2012 (20.9%).  The two years of most gain were 2008 (10.4%) and 2009 (11.3%).

Based on this limited sample (ten years only), I find it hard to believe that some folks believe that a rebound this year could result in a mean extent of greater than 5 or 6M Km Sq.

The below tables should be self explanatory.  The first is the history of the past ten years and the second table shows how great a percentage of gain/loss is required to achieve a specific final result.  We know the folks at WUWT don't understand science or critical thinking, I just hope the folks on the Forum exhibit some more rational thought processes and reasoning.  Weather will be the  final arbiter this year, as always, yet there must be limits to the magnitude of the changes either way.  Between science and statistics those limits should be definable.



"Share Your Knowledge.  It's a Way to Achieve Immortality."  ......the Dalai Lama

Neven

  • Administrator
  • First-year ice
  • Posts: 9470
    • View Profile
    • Arctic Sea Ice Blog
  • Liked: 1333
  • Likes Given: 617
Re: IJIS/JAXA
« Reply #115 on: June 07, 2013, 10:26:01 AM »
I agree with OLN.

Quote
Is there anything we can read into the late update for 5 June, taken together with the recent century breaks and the downward adjustment of the 4 June number? I'm picturing IJIS/JAXA folks looking at their data with disbelief, wondering if the gargantuan drop they see for 5 June can be real, wanting to be really careful before they post it publicly....

This happens regularly, for all kinds of reasons. This time I don't think it has to do with a gargantuan drop, because I haven't seen in my daily routine of comparing UB SIC maps from one day to the next.
The enemy is within
Don't confuse me with him

E. Smith

Frivolousz21

  • Nilas ice
  • Posts: 1915
  • Live in Belleville, IL..15 miles SE of St. Louis.
    • View Profile
  • Liked: 598
  • Likes Given: 7
Re: IJIS/JAXA
« Reply #116 on: June 07, 2013, 10:55:29 AM »

The SW Canadian Archipelago is torching so hard the ice melt is showing up as almost open water.  When it's concentration is still near 100 percent.

Probably throwing off the readings.

I got a nickname for all my guns
a Desert Eagle that I call Big Pun
a two shot that I call Tupac
and a dirty pistol that love to crew hop
my TEC 9 Imma call T-Pain
my 3-8 snub Imma call Lil Wayne
machine gun named Missy so loud
it go e-e-e-e-ow e-e-e-e-e-e-blaow

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #117 on: June 07, 2013, 11:01:42 AM »
IJIS:

No regular up date today??
Have a ice day!

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #118 on: June 07, 2013, 11:03:23 AM »

The SW Canadian Archipelago is torching so hard the ice melt is showing up as almost open water.  When it's concentration is still near 100 percent.

Probably throwing off the readings.



Probably due to the turquoise color? Indicating the state of the ice just before final break up.
Have a ice day!

Shared Humanity

  • Guest
Re: IJIS/JAXA
« Reply #119 on: June 07, 2013, 04:21:16 PM »
OLN.....

I can think of several reasons this is the case.

1.) This site is so awesome that a lot of new and not as informed people are visiting and commenting. I count myself as one of these. I really don't know much and have yet to cast a vote on any of the forecasts for area, extent or volume.

2.) Over the past decade, final SIE has begun to bounce all over the place. If I had to predict SIE for the season, I would predict it to be unpredictable. Your own charts show this.

3.) Given the state of the Arctic, entirely new mechanisms are now impacting ice in ways we have never seen. We simply don't understand what all of these are and how they will impact the ice.

It's kind of like watching a really good horror flick. I'm going to pull up a chair with a bowl of popcorn.  :o

Frivolousz21

  • Nilas ice
  • Posts: 1915
  • Live in Belleville, IL..15 miles SE of St. Louis.
    • View Profile
  • Liked: 598
  • Likes Given: 7
Re: IJIS/JAXA
« Reply #120 on: June 07, 2013, 10:51:35 PM »

The SW Canadian Archipelago is torching so hard the ice melt is showing up as almost open water.  When it's concentration is still near 100 percent.

Probably throwing off the readings.



Probably due to the turquoise color? Indicating the state of the ice just before final break up.

Essentially.  The emissivity of all of the water on top of and in the top layers of the ice is probably wrecking havoc.

It would take very little water on the ice to come back as open water.  Last night the far Western side went below freezing a bit.  Probably refroze the top top layer of the ice like a puddle at night and then it unthaws the next day.

the sensor went from showing blue to white but the ice is still the turquoise color on MODIS. 

So the color to the naked eye eximplify's the melt but the sensor probably wont show up as open water unless the top top layer has standing water sitting on it.
I got a nickname for all my guns
a Desert Eagle that I call Big Pun
a two shot that I call Tupac
and a dirty pistol that love to crew hop
my TEC 9 Imma call T-Pain
my 3-8 snub Imma call Lil Wayne
machine gun named Missy so loud
it go e-e-e-e-ow e-e-e-e-e-e-blaow

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #121 on: June 08, 2013, 12:13:17 AM »
Here is an example why the ice got the turquoise color, image is from Kimmirut Canada:



 
Have a ice day!

ghoti

  • Grease ice
  • Posts: 767
    • View Profile
  • Liked: 12
  • Likes Given: 15
Re: IJIS/JAXA
« Reply #122 on: June 08, 2013, 12:36:37 AM »
I'm amazed the ice there isn't rubble. The tide there has massive amplitude.
Friday 2013-06-07   
Sunrise  2:44 AM EDT, Sunset 10:34 PM EDT
Moonrise  2:45 AM EDT, Moonset  9:09 PM EDT
   Low Tide:   2:17 AM EDT   9.4 feet
  High Tide:   8:24 AM EDT  32.2 feet
   Low Tide:   2:30 PM EDT   9.6 feet
  High Tide:   8:40 PM EDT  33.7 feet

The snow machines and sleds visible in the photo disappear below the roof-line of the building in the foreground at low tide.

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #123 on: June 08, 2013, 10:57:24 AM »
IJIS:

No regular update today?

"In a recent article posted in Nature, an international journal of science, Eicken said the fast-changing sea ice is dangerous because of its unpredictable nature. Where once there was multi-year sea ice that responded in predictable ways, now there is young, first-year ice.

Eicken said the new ice is more difficult to predict not only because it changes quickly but also because current satellite systems are being confused by meltwater. Satellites, he said, are e
ven struggling to track the difference between newly formed ice and open water with waves or foam."
from : http://www.thedutchharborfisherman.com/article/1323changes_in_sea_ice_monitoring_critical_to
Have a ice day!

Wipneus

  • Citizen scientist
  • Young ice
  • Posts: 4220
    • View Profile
    • Arctische Pinguin
  • Liked: 1025
  • Likes Given: 0
Re: IJIS/JAXA
« Reply #124 on: June 08, 2013, 11:32:54 AM »
IJIS:

No regular update today?



Not only Jaxa shows that the Windsat data stream has stopped on June 5:

http://www.ssmi.com/windsat/windsat_data_daily.html?pass=descending

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #125 on: June 09, 2013, 10:58:27 AM »
IJIS:

As expected no regular update today?
Have a ice day!

Wipneus

  • Citizen scientist
  • Young ice
  • Posts: 4220
    • View Profile
    • Arctische Pinguin
  • Liked: 1025
  • Likes Given: 0
Re: IJIS/JAXA
« Reply #126 on: June 09, 2013, 04:54:13 PM »
The reservation about data not calibrated yet in the sea ice monitor is gone! When did that happen?

If so, nothing should be in the way of using ASMR2 data for the extent calculations.

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #127 on: June 10, 2013, 10:58:42 AM »
IJIS:

No regular update today! ???
Have a ice day!

OldLeatherneck

  • Grease ice
  • Posts: 554
    • View Profile
  • Liked: 2
  • Likes Given: 0
Re: IJIS/JAXA
« Reply #128 on: June 10, 2013, 02:39:34 PM »
Does anyone have any definitive reason that IJIS has not updated for 5 consecutive days? 

I would think that someone on this Forum would have contacts that could provide this information.
"Share Your Knowledge.  It's a Way to Achieve Immortality."  ......the Dalai Lama

SATire

  • Grease ice
  • Posts: 514
    • View Profile
  • Liked: 34
  • Likes Given: 8
Re: IJIS/JAXA
« Reply #129 on: June 10, 2013, 04:02:12 PM »
As I know the Japanese way to do things, I would guess they are triple and quadruple checking ASMR2 and after everything is fine and some days stood fine, they may follow the road Wipneus suggested above :-)
Maybe CT joined them 2 days ago?

Artful Dodger

  • Frazil ice
  • Posts: 459
  • The traps have got him, and that's all about it!
    • View Profile
  • Liked: 24
  • Likes Given: 127
Re: IJIS/JAXA
« Reply #130 on: June 11, 2013, 08:17:47 AM »
As I know the Japanese way to do things...
Hi SATire,

That would be the International way of doing things (IJIS is a multi-national program based in at the University of Alaska in Fairbanks). The Japanese Space Agency JAXA is NOT the agency issuing IJIS updates..

http://www.ijis.iarc.uaf.edu/en/welcome/access.htm

JAXA built the AMSR2 sensor and launched the satellite, which is still sending data (see the IJIC SIC charts on the ASI Graphs page).
Cheers!
Lodger

Wipneus

  • Citizen scientist
  • Young ice
  • Posts: 4220
    • View Profile
    • Arctische Pinguin
  • Liked: 1025
  • Likes Given: 0
Re: IJIS/JAXA
« Reply #131 on: June 11, 2013, 08:20:10 AM »
Some of the missing Windsat data is being filled in (June 7). If so there is hope for some IJIS update soon.

http://www.ssmi.com/windsat/windsat_data_daily.html?pass=descending

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #132 on: June 11, 2013, 10:57:52 AM »
IJIS:

11,246,875 km2 (June 8, 2013
Have a ice day!

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #133 on: June 11, 2013, 10:59:07 AM »
IJIS:

11,270,938 km2 (June 9, 2013)

11,059,219 km2 (June 10, 2013) 

382,656 km2 above 2012
and
74,124 km2 above 2000s average.
Have a ice day!

Peter Ellis

  • Grease ice
  • Posts: 619
    • View Profile
  • Liked: 33
  • Likes Given: 14
Re: IJIS/JAXA
« Reply #134 on: June 11, 2013, 12:00:39 PM »
Still a very bouncy trace - I wouldn't trust that double century break at all, even after revision.  I think the Windsat data is sufficiently noisy that day-to-day changes are simply misleading.  Overall we're looking at 450k lost in the last week, after 275k the week before.

Jim Pettit

  • Nilas ice
  • Posts: 1175
    • View Profile
  • Liked: 41
  • Likes Given: 11
Re: IJIS/JAXA
« Reply #135 on: June 11, 2013, 12:15:24 PM »
Now that IJIS/JAXA is back, replete with three days of missing data, I have to agree that the day-to-day numbers seem--to me questionable. That is, in the seven days prior to the dropout (28 May - 04 Jun), IJIS extent dropped by an average of 63,400k km2 per day, with two century breaks in a row right at the end. But then over the next five days (Jun 05 - Jun 09), extent dropped by just 82k in total, a daily average of 16k km2--and that was followed by yesterday's jumbo drop of 212k.

Normally, that wouldn't be a big deal. But an even more suspect thing happened back in the early part of the year that has me wondering. To wit:

Over the two weeks prior to 24 Jan, IJIS extent had grown by an average of about 50k per day. On the 24th, it suddenly decreased by 91k. Data from the 25th is missing. On 26 Jan, data returned, this time showing a massive two-day growth total of 327k--after which it fell back into the routine of growing by a few tens of thousands each day.

Bottom line, and as Peter Ellis just wrote, I'd take the IJIS numbers around a data dropout with a huge grain of salt...

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #136 on: June 11, 2013, 12:28:02 PM »
I agree the figures look suspicious but overall I think the numbers are pretty much ok, especially when compared to 2012:

http://igloo.atmos.uiuc.edu/cgi-bin/test/print.sh?fm=06&fd=08&fy=2012&sm=06&sd=08&sy=2013
Have a ice day!

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #137 on: June 12, 2013, 10:57:33 AM »
IJIS:

11,186,250 km2 (June 10, 2013) revised

11,120,313 km2 (June 11, 2013)

545,157 km2 km2 more than 2012
and
177,907 km2 more than 2000s average
« Last Edit: June 12, 2013, 11:14:08 AM by Espen »
Have a ice day!

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #138 on: June 13, 2013, 10:58:36 AM »
IJIS:

11,027,813 km2 (June 12, 2013)

558,594 km2 above 2012
and
128,157 km2 above 2000s average
Have a ice day!

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #139 on: June 14, 2013, 11:15:16 AM »
IJIS:

10,978,594 km2 (June 13, 2013) 

632,500 km2 above 2012

and

128,219 km2 above 2000s average

and

the highest since 2003?
Have a ice day!

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #140 on: June 15, 2013, 11:02:44 AM »
IJIS:

10,969,844 km2 (June 14, 2013) 

744,844 km2 above 2012
and
167,422 km2 above 2000s average
Have a ice day!

Neven

  • Administrator
  • First-year ice
  • Posts: 9470
    • View Profile
    • Arctic Sea Ice Blog
  • Liked: 1333
  • Likes Given: 617
Re: IJIS/JAXA
« Reply #141 on: June 15, 2013, 11:09:24 AM »
A drop of just 8,750 km2, that's insanely low!  :D

I never would've expected the weather to have such an impact in June. Not after last year. But extent is of course not measuring the holes in the ice pack.

I'm going to have to look at CAPIE one of these days...
The enemy is within
Don't confuse me with him

E. Smith

ivica

  • Nilas ice
  • Posts: 1475
  • Kelele
    • View Profile
  • Liked: 99
  • Likes Given: 0
Re: IJIS/JAXA
« Reply #142 on: June 15, 2013, 01:38:13 PM »
A bit off-topic:
What are day drop maxes for extent & area meassured ever?
This summer could chalenge them.

Neven

  • Administrator
  • First-year ice
  • Posts: 9470
    • View Profile
    • Arctic Sea Ice Blog
  • Liked: 1333
  • Likes Given: 617
Re: IJIS/JAXA
« Reply #143 on: June 15, 2013, 02:21:08 PM »
I believe the biggest single day drop for CT SIA was 437K for May 1st. If things keep going this slow, and the weather makes a sudden switch, a 300+K drop should be possible.

As far as IJIS is concerned I only see one double century drop (202K) for July 3rd 2007, a rare occurrence. Might happen this year, but holes don't get registered for SIE.
The enemy is within
Don't confuse me with him

E. Smith

Jim Pettit

  • Nilas ice
  • Posts: 1175
    • View Profile
  • Liked: 41
  • Likes Given: 11
Re: IJIS/JAXA
« Reply #144 on: June 15, 2013, 02:49:50 PM »
It's very difficult to look at the visible evidence and not expect to see at least handful of massive daily drops in extent (and area, for that matter) sometime over the next eight weeks or so. The ice is simply too thin and too frangible for it to withstand the dual onslaught of insolation and temperature maxima; even the vagaries of the extent and area algorithms won't be able to hold up then, and should come crashing downward.

But, as always, we'll see...

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #145 on: June 16, 2013, 10:59:25 AM »
IJIS:

10,939,063 km2 (June 15, 2013)

739,063 km2 above 2012

and 192,375 m2 above 2000s average
Have a ice day!

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #146 on: June 17, 2013, 10:58:04 AM »
IJIS:

10,914,375 km2
(June 16, 2013)

752,969 km2 above 2012
and
223,656 km2 above 2000s average?
Have a ice day!

Neven

  • Administrator
  • First-year ice
  • Posts: 9470
    • View Profile
    • Arctic Sea Ice Blog
  • Liked: 1333
  • Likes Given: 617
Re: IJIS/JAXA
« Reply #147 on: June 17, 2013, 01:37:56 PM »
With CT SIA recording some very big drops - two almost double centuries in a row - CAPIE has started to shoot down as well...
The enemy is within
Don't confuse me with him

E. Smith

Espen

  • Young ice
  • Posts: 3705
    • View Profile
  • Liked: 420
  • Likes Given: 4
Re: IJIS/JAXA
« Reply #148 on: June 17, 2013, 04:42:13 PM »
Maybe IJIS cant find the cliff?
« Last Edit: June 18, 2013, 11:12:43 AM by Espen »
Have a ice day!

Neven

  • Administrator
  • First-year ice
  • Posts: 9470
    • View Profile
    • Arctic Sea Ice Blog
  • Liked: 1333
  • Likes Given: 617
Re: IJIS/JAXA
« Reply #149 on: June 17, 2013, 07:40:53 PM »
Couldn't find it last year either, if I remember correctly.
The enemy is within
Don't confuse me with him

E. Smith