Support the Arctic Sea Ice Forum and Blog

Author Topic: 2020 Sea ice area and extent data  (Read 413993 times)

Alison

  • New ice
  • Posts: 56
    • View Profile
  • Liked: 24
  • Likes Given: 145
Re: 2020 Sea ice area and extent data
« Reply #1200 on: August 05, 2020, 09:29:35 PM »
Gero, that’s awful news. I’d like to contribute, too. It would be a small price to pay for my daily numbers fix!
« Last Edit: August 06, 2020, 06:02:57 AM by Alison »

Steven

  • Grease ice
  • Posts: 627
    • View Profile
  • Liked: 189
  • Likes Given: 17
Re: 2020 Sea ice area and extent data
« Reply #1201 on: August 05, 2020, 09:49:29 PM »
NSIDC daily sea ice area: 2020 is lowest on record for the date, basically tied with 2012.



I created the graph using data from Wipneus' site.

Ranking of the NSIDC daily area values for 4th August:


jdallen

  • Young ice
  • Posts: 3233
    • View Profile
  • Liked: 499
  • Likes Given: 204
Re: 2020 Sea ice area and extent data
« Reply #1202 on: August 05, 2020, 10:24:25 PM »
My God gerontocrat! That's awful. I wish you have made backups.
Perhaps we from the forum could each give some money for you to buy a (2nd hand?) laptop.

I wish you strength with the sudden hole in your life/routine.
A virtual hug from me.
Good Idea,
All right, Nanning, if anyone opens a pot to help Gerontocrat, I'm in.
+1. Ditto.
This space for Rent.

be cause

  • Nilas ice
  • Posts: 1379
    • View Profile
  • Liked: 597
  • Likes Given: 455
Re: 2020 Sea ice area and extent data
« Reply #1203 on: August 05, 2020, 10:46:42 PM »
Just to confirm .. this is open for donations toward gero's computing needs ..

https://www.gofundme.com/f/geros-laptop/share

  virtual hugs and kisses to all donors .. and a promise of graphs and numbers a plenty to follow .. b.c.
2007 + 5 = 2012 + 4 = 2016 + 3 = 2019 + 2 = 2021 
 (phew)

Stephan

  • Nilas ice
  • Posts: 1336
    • View Profile
  • Liked: 468
  • Likes Given: 231
Re: 2020 Sea ice area and extent data
« Reply #1204 on: August 05, 2020, 10:57:49 PM »
I also added some money to that gofundme.  :)
It is too late just to be concerned about Climate Change

gerontocrat

  • First-year ice
  • Posts: 9104
    • View Profile
  • Liked: 3597
  • Likes Given: 27
Re: 2020 Sea ice area and extent data
« Reply #1205 on: August 05, 2020, 11:47:21 PM »
I am overwhelmed and touched by the generosity of spirit of so many of you.

The fund has reached its goal.

I hope you will see me posting again pretty soon.

Thanks again,

Matt
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

igs

  • Guest
Re: 2020 Sea ice area and extent data
« Reply #1206 on: August 06, 2020, 12:51:42 AM »
My God gerontocrat! That's awful. I wish you have made backups.
Perhaps we from the forum could each give some money for you to buy a (2nd hand?) laptop.

I wish you strength with the sudden hole in your life/routine.
A virtual hug from me.


I'm in if someone will organize it. Perhaps Gero can let us know what kind of equipment would serve his purposes and perhaps you have a paypal account or something similar easy to send some funds.

DON'T BE SHY you deserve any help from us who benefit for so long from the great efforts you made.

Maven

  • New ice
  • Posts: 5
    • View Profile
  • Liked: 3
  • Likes Given: 200
Re: 2020 Sea ice area and extent data
« Reply #1207 on: August 06, 2020, 02:22:30 AM »
My God gerontocrat! That's awful. I wish you have made backups.
Perhaps we from the forum could each give some money for you to buy a (2nd hand?) laptop.

I wish you strength with the sudden hole in your life/routine.
A virtual hug from me.


I'm in if someone will organize it. Perhaps Gero can let us know what kind of equipment would serve his purposes and perhaps you have a paypal account or something similar easy to send some funds.

DON'T BE SHY you deserve any help from us who benefit for so long from the great efforts you made.


Just to confirm .. this is open for donations toward gero's computing needs ..

https://www.gofundme.com/f/geros-laptop/share

  virtual hugs and kisses to all donors .. and a promise of graphs and numbers a plenty to follow .. b.c.

glennbuck

  • Frazil ice
  • Posts: 334
    • View Profile
  • Liked: 114
  • Likes Given: 30
Re: 2020 Sea ice area and extent data
« Reply #1208 on: August 06, 2020, 02:39:24 AM »
Will be able to buy a supercomputer at this rate, i use a rubber keyboard for spills and a desktop is safer and easy to upgrade compared to a laptop with two monitors is nice. Great this is sorted and Matt can get on with his great job we all appreciate your awesome work. 
« Last Edit: August 06, 2020, 02:44:34 AM by glennbuck »

icy voyeur2

  • New ice
  • Posts: 6
    • View Profile
  • Liked: 3
  • Likes Given: 28
Re: 2020 Sea ice area and extent data
« Reply #1209 on: August 06, 2020, 04:00:26 AM »
Thanks to all.

It will be done ASAP.. hopefully normal service resumes early next week.

Matt Greenwood, aka gerontocrat.


Almost donated as I get the idea. My backspace key won't work, and I haven't work in years so a new laptop is a scary budget item. But I see the "goal" has been met, and I have anonymity issues.

Still, sending love regards your dedication and effort. It is appreciated.

For what little it's worth, my last laptop has a dead keyboard and monitor and power port, but I cracked the case to solder on a new wire so I could power it up, use an external monitor and keyboard to transfer files to a USB drive and save years worth of scripts and data that are, oddly, dear to me. Think I"ll back up some of my current laptop soon.

Maybe I'll catch the next person whose dog's exuberance spills the coffee (my late Newfoundland Dog was named Java, still miss him). Apologies for rambling, but again, know that even those who didn't pony up this time appreciate your work.

Juan C. García

  • Nilas ice
  • Posts: 2031
    • View Profile
  • Liked: 967
  • Likes Given: 697
Re: 2020 Sea ice area and extent data
« Reply #1210 on: August 06, 2020, 05:08:45 AM »
I am surprised of how weak the Arctic sea ice looks, but at the end, the extent drops have been lower than average.
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

Frivolousz21

  • Nilas ice
  • Posts: 1845
  • Live in Belleville, IL..15 miles SE of St. Louis.
    • View Profile
  • Liked: 550
  • Likes Given: 6
Re: 2020 Sea ice area and extent data
« Reply #1211 on: August 06, 2020, 05:17:02 AM »
I am surprised of how weak the Arctic sea ice looks, but at the end, the extent drops have been lower than average.

Have had a reverse dipole for like 10 days.(just guessing, at least a week.  We're lucky we have even seen three drops we have.


Drops are about to pick up a lot tho.


All of that carved put green is likely to disappear.
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

Juan C. García

  • Nilas ice
  • Posts: 2031
    • View Profile
  • Liked: 967
  • Likes Given: 697
Re: 2020 Sea ice area and extent data
« Reply #1212 on: August 06, 2020, 05:38:40 AM »
I am surprised of how weak the Arctic sea ice looks, but at the end, the extent drops have been lower than average.
Sorry that I posted here. I thought that I was on "The 2020 melting season" thread.

[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

August 5th, 2020:
     5,502,068 km2, a drop of -52,097 km2.
     2020 is the lowest on record.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent
« Last Edit: August 06, 2020, 06:03:29 AM by Juan C. García »
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

bill kapra

  • New ice
  • Posts: 19
    • View Profile
  • Liked: 23
  • Likes Given: 2
Re: 2020 Sea ice area and extent data
« Reply #1213 on: August 06, 2020, 05:48:24 AM »
Thank you Gerontocrat!
Longtime lurker very much appreciates your efforts. Glad to kick in a little bit to help. Here’s to all of the members of thus board and the strong community you’ve created. A plaesure and honor to be among you.

Juan C. García

  • Nilas ice
  • Posts: 2031
    • View Profile
  • Liked: 967
  • Likes Given: 697
Re: 2020 Sea ice area and extent data
« Reply #1214 on: August 06, 2020, 06:10:17 AM »
I am overwhelmed and touched by the generosity of spirit of so many of you.

The fund has reached its goal.

I hope you will see me posting again pretty soon.

Thanks again,

Matt
Gerontocrat: Congratulations that you got a new laptop & it is great that you accepted the gift. The ASIF would not be the same without you!

An now, I invite everybody to think on Neven. He has been running this place and the ASIB for 10+ years. I don't know how much it has cost, but I am sure that it has been expensive to develop and maintain.

To donate, you have to go to Neven's ASIB and click on "Support & donate" on the circle on the right side.

https://neven1.typepad.com/

Thanks! We are a great team!
« Last Edit: August 06, 2020, 06:37:48 AM by Juan C. García »
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

binntho

  • Nilas ice
  • Posts: 1492
    • View Profile
  • Liked: 499
  • Likes Given: 115
Re: 2020 Sea ice area and extent data
« Reply #1215 on: August 06, 2020, 06:59:41 AM »
I am overwhelmed and touched by the generosity of spirit of so many of you.

The fund has reached its goal.

I hope you will see me posting again pretty soon.

Thanks again,

Matt
HI Gero just donated something towards a new USB wireless keyboard and mouse. Put plastic cover over your laptop keyboard - then the next time the dog spills it's coffee over it (I can just picture it reading your posts avidly while sipping on an early-morning latte) you only have to replace the USB keyboard.

To whoever manages the fundraiser: Please stop it before we in the Old World react to the first pleas for donations and keep piling the money in!
because a thing is eloquently expressed it should not be taken to be as necessarily true
St. Augustine, Confessions V, 6

psymmo7

  • New ice
  • Posts: 67
    • View Profile
  • Liked: 32
  • Likes Given: 14
Re: 2020 Sea ice area and extent data
« Reply #1216 on: August 06, 2020, 09:20:17 AM »
Just to confirm .. this is open for donations toward gero's computing needs ..

https://www.gofundme.com/f/geros-laptop/share

  virtual hugs and kisses to all donors .. and a promise of graphs and numbers a plenty to follow .. b.c.

Thanks to bc, blumenkraft and others for organising the go fund me page.
I have kept my promise and donated.
Gero - enjoy your new laptop

MrGreeny

  • New ice
  • Posts: 45
    • View Profile
  • Liked: 10
  • Likes Given: 8
Re: 2020 Sea ice area and extent data
« Reply #1217 on: August 06, 2020, 09:33:53 AM »
I was wondering why Geronto wasn't posting lately until I saw what had happened.

I like reading your posts here on the forums along with Juans and you have done a lot of good work here, keep up the good work!
The ice spins right round baby right round, like a record baby right round round round ~

blumenkraft

  • Guest
Re: 2020 Sea ice area and extent data
« Reply #1218 on: August 06, 2020, 10:09:22 AM »
UPDATE

The fundraising was very successful! I never imagined we can pull this kind of thing off, but here we are. I want to thank everyone. You folks are just awesome! Of course, the GoFundMe page will stay up for a little since it's not even up for 24h (we are not even around the globe with this).

I will hand over the campaign page to Gero later for him to withdraw the funds.

When the GoFundMe site is offline and you still have some spare bucks, please follow Juans advice and donate to the forum.

I'm humbled and honored to be a part of this awesome community.

Special thanks to Be Cause and Greylib!

Gray-Wolf

  • Grease ice
  • Posts: 890
    • View Profile
  • Liked: 122
  • Likes Given: 318
Re: 2020 Sea ice area and extent data
« Reply #1219 on: August 06, 2020, 02:21:57 PM »
You awesome folk!

Just retweeted the page as I have no cash but lots of followers.....

I'm sure any 'excess' funding can be diverted to the needs of the Forum once Gerontocrat is sorted out?
KOYAANISQATSI

ko.yaa.nis.katsi (from the Hopi language), n. 1. crazy life. 2. life in turmoil. 3. life disintegrating. 4. life out of balance. 5. a state of life that calls for another way of living.
 
VIRESCIT VULNERE VIRTUS

Alphabet Hotel

  • Frazil ice
  • Posts: 342
    • View Profile
  • Liked: 131
  • Likes Given: 68
Re: 2020 Sea ice area and extent data
« Reply #1220 on: August 06, 2020, 03:15:43 PM »
NSIDC daily extent

7-day average:  (5860 − 6090) / 7  =  −33
14-day average: (5860 − 6330) / 14  =  −34

2020-07-22  6.330
2020-07-23  6.301    −29
2020-07-24  6.311    +10
2020-07-25  6.246    −65
2020-07-26  6.204    −42
2020-07-27  6.130    −74
2020-07-28  6.221    +91
2020-07-29  6.090  −131
2020-07-30  6.069    −21
2020-07-31  6.036    −33
2020-08-01  5.976    −60
2020-08-02  5.852  −124
2020-08-03  5.790    −62
2020-08-04  5.783      −7
2020-08-05  5.860    +77

weatherdude88

  • Frazil ice
  • Posts: 154
    • View Profile
  • Liked: 12
  • Likes Given: 0
Re: 2020 Sea ice area and extent data
« Reply #1221 on: August 06, 2020, 10:19:58 PM »
For 8.5.2020, NSIDC northern hemisphere sea ice extent single daily value is 5.86 millions of square kilometers. This is an increase of 77,000 square kilometers from the previous day.

Sea ice extent is now in third place for the date.

Sea ice area is now in second place for the date.

The trailing averages should reflect the change of the trajectory of the 2020 northern hemisphere melting season in the next several days.

This should come as a surprise to no one.   

It is likely JAXA sea ice extent will fall into third place within 2-3 days. 2019 and 2012 have some significant sea ice extent decreases the next several day.

sqwazw

  • New ice
  • Posts: 12
    • View Profile
  • Liked: 2
  • Likes Given: 42
Re: 2020 Sea ice area and extent data
« Reply #1222 on: August 07, 2020, 01:39:45 AM »
Just to confirm .. this is open for donations toward gero's computing needs ..

https://www.gofundme.com/f/geros-laptop/share

  virtual hugs and kisses to all donors .. and a promise of graphs and numbers a plenty to follow .. b.c.
That was an easy sell, love your work here Gerontocrat. With the goal exceeded by a country mile, buy a nice workstation rather than just a plain old laptop.

Ranman99

  • New ice
  • Posts: 40
    • View Profile
  • Liked: 11
  • Likes Given: 5
Re: 2020 Sea ice area and extent data
« Reply #1223 on: August 07, 2020, 02:17:23 AM »
Absoltuley anything that is handy for the work!!!  :-* :-* :-*
Randy Fitton

Juan C. García

  • Nilas ice
  • Posts: 2031
    • View Profile
  • Liked: 967
  • Likes Given: 697
Re: 2020 Sea ice area and extent data
« Reply #1224 on: August 07, 2020, 05:34:46 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

August 6th, 2020:
     5,489,054 km2, a drop of -13,014 km2.
     2020 is still the lowest on record.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent
« Last Edit: August 07, 2020, 05:43:47 AM by Juan C. García »
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

Alphabet Hotel

  • Frazil ice
  • Posts: 342
    • View Profile
  • Liked: 131
  • Likes Given: 68
Re: 2020 Sea ice area and extent data
« Reply #1225 on: August 07, 2020, 06:24:31 PM »
NSIDC daily extent

7-day average:  (5812 − 6069) / 7  =  −37
14-day average: (5812 − 6301) / 14  =  −35

2020-07-23  6.301
2020-07-24  6.311    +10
2020-07-25  6.246    −65
2020-07-26  6.204    −42
2020-07-27  6.130    −74
2020-07-28  6.221    +91
2020-07-29  6.090  −131
2020-07-30  6.069    −21
2020-07-31  6.036    −33
2020-08-01  5.976    −60
2020-08-02  5.852  −124
2020-08-03  5.790    −62
2020-08-04  5.783      −7
2020-08-05  5.860    +77
2020-08-06  5.812    −48

Juan C. García

  • Nilas ice
  • Posts: 2031
    • View Profile
  • Liked: 967
  • Likes Given: 697
Re: 2020 Sea ice area and extent data
« Reply #1226 on: August 08, 2020, 05:33:52 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

August 7th, 2020:
     5,459,062 km2, a drop of -29,992 km2.
     2020 is now the 3rd lowest on record.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent
« Last Edit: August 08, 2020, 05:52:28 AM by Juan C. García »
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

Alphabet Hotel

  • Frazil ice
  • Posts: 342
    • View Profile
  • Liked: 131
  • Likes Given: 68
Re: 2020 Sea ice area and extent data
« Reply #1227 on: August 08, 2020, 04:25:24 PM »
NSIDC daily extent

7-day average:  (5760 − 6036) / 7  =  −39
14-day average: (5760 − 6311) / 14  =  −39

2020-07-24  6.311
2020-07-25  6.246    −65
2020-07-26  6.204    −42
2020-07-27  6.130    −74
2020-07-28  6.221    +91
2020-07-29  6.090  −131
2020-07-30  6.069    −21
2020-07-31  6.036    −33
2020-08-01  5.976    −60
2020-08-02  5.852  −124
2020-08-03  5.790    −62
2020-08-04  5.783      −7
2020-08-05  5.860    +77
2020-08-06  5.812    −48
2020-08-07  5.760    −52

Stephan

  • Nilas ice
  • Posts: 1336
    • View Profile
  • Liked: 468
  • Likes Given: 231
Re: 2020 Sea ice area and extent data
« Reply #1228 on: August 08, 2020, 09:01:58 PM »
I added the monthly extent value for July 2020 into my long-term plot where I calculate the extent anomalies from 1979 up to now.
The average (1979-2020) July extent is now 9.13 M km². July 2020 had an average extent of 7.28 M km², which is 1.85 M km² less than that long-term average and the lowest on record so far.
The much higher than normal losses in July 2020 pushed the actual value below the red long-term linear trend line by 0.66 M km² (calculated from the linear trend line this July should have been at 7.94 M km²).
The slope of the long-term linear trend line has become steeper by two digits (-0.0551 instead of -0.0549).

See attached graph.
It is too late just to be concerned about Climate Change

Lord M Vader

  • Nilas ice
  • Posts: 1330
    • View Profile
  • Liked: 46
  • Likes Given: 29
Re: 2020 Sea ice area and extent data
« Reply #1229 on: August 09, 2020, 05:26:48 AM »
August 8:    5,390,893 km2.  Down 68,169 km2

weatherdude88

  • Frazil ice
  • Posts: 154
    • View Profile
  • Liked: 12
  • Likes Given: 0
Re: 2020 Sea ice area and extent data
« Reply #1230 on: August 09, 2020, 05:30:58 AM »
August 8:    5,390,893 km2. Almost a century drop, down 98,161 km2.

5,459,062 - 5,390,893 = 68,169

The 2-day change is a decrease of 98,161 square kilometers of sea ice extent on JAXA.

Here is the 1-day change of the AMSR2 concentration map in a .gif file format.








« Last Edit: August 09, 2020, 05:37:18 AM by weatherdude88 »

Lord M Vader

  • Nilas ice
  • Posts: 1330
    • View Profile
  • Liked: 46
  • Likes Given: 29
Re: 2020 Sea ice area and extent data
« Reply #1231 on: August 09, 2020, 05:32:12 AM »
Thanks Weatherdude, I had already changed the number before your post.

Juan C. García

  • Nilas ice
  • Posts: 2031
    • View Profile
  • Liked: 967
  • Likes Given: 697
Re: 2020 Sea ice area and extent data
« Reply #1232 on: August 09, 2020, 05:42:15 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

August 8th, 2020:
     5,390,893 km2, a drop of -68,169 km2.
     2020 is 3rd lowest on record.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

Alphabet Hotel

  • Frazil ice
  • Posts: 342
    • View Profile
  • Liked: 131
  • Likes Given: 68
Re: 2020 Sea ice area and extent data
« Reply #1233 on: August 09, 2020, 03:50:42 PM »
NSIDC daily extent

7-day average:  (5645 − 5976) / 7  =  −47
14-day average: (5645 − 6246) / 14  =  −43

2020-07-25  6.246
2020-07-26  6.204    −42
2020-07-27  6.130    −74
2020-07-28  6.221    +91
2020-07-29  6.090  −131
2020-07-30  6.069    −21
2020-07-31  6.036    −33
2020-08-01  5.976    −60
2020-08-02  5.852  −124
2020-08-03  5.790    −62
2020-08-04  5.783      −7
2020-08-05  5.860    +77
2020-08-06  5.812    −48
2020-08-07  5.760    −52
2020-08-08  5.645  −115

Steven

  • Grease ice
  • Posts: 627
    • View Profile
  • Liked: 189
  • Likes Given: 17
Re: 2020 Sea ice area and extent data
« Reply #1234 on: August 09, 2020, 08:07:06 PM »
NSIDC daily area is currently 3.47 million km2, which is second lowest for the date. 

It is 0.33 million km2 above 2012, 0.10 million km2 below 2019, 0.21 below 2016, and 0.48 below the 2010s average. 

Area has been dropping slowly in the last few days, at an average rate of -0.02 million km2 per day during the last 5 days. 

The area anomaly (relative to the 1981-2010 average) is currently -1.90 million km2.


weatherdude88

  • Frazil ice
  • Posts: 154
    • View Profile
  • Liked: 12
  • Likes Given: 0
Re: 2020 Sea ice area and extent data
« Reply #1235 on: August 09, 2020, 08:10:18 PM »
For 8.8.2020, the NSIDC northern hemisphere sea ice area single daily value is 3.473803 millions of square kilometers. This is a decrease of 13,048 square kilometers from the previous day.

The change from the previous daily value, over the past five days are as follows:

-73,057 (8.4)
-780 (8.5)
-30,586 (8.6)
-4,347 (8.7)
-13,048 (8.8 )

Area losses continue to be below average. With the daily extent loss of -115, compaction increased on this day.

Area is in 2nd place for the date, and may fall to fourth place within the next 2 - 3 days.
« Last Edit: August 09, 2020, 10:47:19 PM by weatherdude88 »

Juan C. García

  • Nilas ice
  • Posts: 2031
    • View Profile
  • Liked: 967
  • Likes Given: 697
Re: 2020 Sea ice area and extent data
« Reply #1236 on: August 10, 2020, 05:29:42 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

August 9th, 2020:
     5,297,487 km2, a drop of -93,406 km2.
     2020 is 3rd lowest on record.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent
« Last Edit: August 10, 2020, 05:41:16 AM by Juan C. García »
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

Alphabet Hotel

  • Frazil ice
  • Posts: 342
    • View Profile
  • Liked: 131
  • Likes Given: 68
Re: 2020 Sea ice area and extent data
« Reply #1237 on: August 10, 2020, 06:11:57 PM »
NSIDC daily extent

7-day average:  (5549 − 5852) / 7  =  −43
14-day average: (5549 − 6204) / 14  =  −47

2020-07-26  6.204
2020-07-27  6.130    −74
2020-07-28  6.221    +91
2020-07-29  6.090  −131
2020-07-30  6.069    −21
2020-07-31  6.036    −33
2020-08-01  5.976    −60
2020-08-02  5.852  −124
2020-08-03  5.790    −62
2020-08-04  5.783      −7
2020-08-05  5.860    +77
2020-08-06  5.812    −48
2020-08-07  5.760    −52
2020-08-08  5.645  −115
2020-08-09  5.549    −96

weatherdude88

  • Frazil ice
  • Posts: 154
    • View Profile
  • Liked: 12
  • Likes Given: 0
Re: 2020 Sea ice area and extent data
« Reply #1238 on: August 10, 2020, 10:09:11 PM »
For 8.9.2020, the NSIDC northern hemisphere sea ice area single daily value is 3.456533 millions of square kilometers. This is a decrease of 17,270 square kilometers from the previous day.

The change from the previous daily value, over the past five days are as follows:

-780 (8.5)
-30,586 (8.6)
-4,347 (8.7)
-13,048 (8.8 )
-17,270 (8.9)

If you factor in leap year, 2020 is now in fourth place for the date. Area losses continue to be below average. NSIDC compaction increased on this day.

HapHazard

  • Frazil ice
  • Posts: 356
    • View Profile
  • Liked: 141
  • Likes Given: 2631
Re: 2020 Sea ice area and extent data
« Reply #1239 on: August 10, 2020, 11:13:07 PM »
2020-08-08  5.645  −115
2020-08-09  5.549    −96

*edit* something broke on the forum & screwed this up.
« Last Edit: August 11, 2020, 05:51:26 PM by HapHazard »

Niall Dollard

  • Grease ice
  • Posts: 750
    • View Profile
  • Liked: 289
  • Likes Given: 67
Re: 2020 Sea ice area and extent data
« Reply #1240 on: August 11, 2020, 11:27:23 AM »
And the forum is back. Just got the daily Jaxa extent figures.

August 10th : 5,261,295 km2

A drop of 36,192.

MrGreeny

  • New ice
  • Posts: 45
    • View Profile
  • Liked: 10
  • Likes Given: 8
Re: 2020 Sea ice area and extent data
« Reply #1241 on: August 11, 2020, 02:21:17 PM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.]

August 10th, 2020:
     5,261,295 km2, a drop of -36,192 km2.
     2020 is 3rd lowest on record.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent

Graph attached, self calculated.
The ice spins right round baby right round, like a record baby right round round round ~

weatherdude88

  • Frazil ice
  • Posts: 154
    • View Profile
  • Liked: 12
  • Likes Given: 0
Re: 2020 Sea ice area and extent data
« Reply #1242 on: August 11, 2020, 03:47:51 PM »

2020-08-08  5.645  −115
2020-08-09  5.549    −96

Here we go.

NSIDC daily sea ice extent

8.10.2020 5.595 +46
« Last Edit: August 11, 2020, 03:53:14 PM by oren »

Juan C. García

  • Nilas ice
  • Posts: 2031
    • View Profile
  • Liked: 967
  • Likes Given: 697
Re: 2020 Sea ice area and extent data
« Reply #1243 on: August 11, 2020, 03:57:08 PM »
Thank you for the ADS-JAXA posts, Niall Dollard and MrGreeny.  :)

[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

August 10th, 2020:
     5,261,295 km2, a drop of -36,192 km2.
     2020 is 3rd lowest on record.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

Alphabet Hotel

  • Frazil ice
  • Posts: 342
    • View Profile
  • Liked: 131
  • Likes Given: 68
Re: 2020 Sea ice area and extent data
« Reply #1244 on: August 11, 2020, 05:16:04 PM »
NSIDC daily extent

7-day average:  (5595 − 5790) / 7  =  −28
14-day average: (5595 − 6130) / 14  =  −38

2020-07-27  6.130
2020-07-28  6.221    +91
2020-07-29  6.090  −131
2020-07-30  6.069    −21
2020-07-31  6.036    −33
2020-08-01  5.976    −60
2020-08-02  5.852  −124
2020-08-03  5.790    −62
2020-08-04  5.783      −7
2020-08-05  5.860    +77
2020-08-06  5.812    −48
2020-08-07  5.760    −52
2020-08-08  5.645  −115
2020-08-09  5.549    −96
2020-08-10  5.595    +46

Juan C. García

  • Nilas ice
  • Posts: 2031
    • View Profile
  • Liked: 967
  • Likes Given: 697
Re: 2020 Sea ice area and extent data
« Reply #1245 on: August 12, 2020, 05:32:34 AM »
[ADS NIPR VISHOP (JAXA)] Arctic Sea Ice Extent.

August 11th, 2020:
     5,231,356 km2, a drop of -29,939 km2.
     2020 is 3rd lowest on record.
     Highlighted 2020 & the 4 years with a daily lowest min in Sept. (2012, 2019, 2016 & 2007).
     In the graph are today's 10 lowest years.
     Source: https://ads.nipr.ac.jp/vishop/#/extent
« Last Edit: August 12, 2020, 05:43:28 AM by Juan C. García »
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

Lord M Vader

  • Nilas ice
  • Posts: 1330
    • View Profile
  • Liked: 46
  • Likes Given: 29
Re: 2020 Sea ice area and extent data
« Reply #1246 on: August 12, 2020, 07:36:09 AM »
Juan C & Gerontocrat: seems like good odds that melting rate this month could be record low unless it doesn't speed up soon.

glennbuck

  • Frazil ice
  • Posts: 334
    • View Profile
  • Liked: 114
  • Likes Given: 30
Re: 2020 Sea ice area and extent data
« Reply #1247 on: August 12, 2020, 02:31:44 PM »
Arctic sea ice area for Aug 11th,  3,352,813 km^2. NSIDC Daily Area. Change from yesterday of  35,410 km^2

lowests minimum: 2.241 (2012), 2.477 (2016)
(2019) minimum: 2.960

igs

  • Guest
Re: 2020 Sea ice area and extent data
« Reply #1248 on: August 12, 2020, 02:32:07 PM »
Juan C & Gerontocrat: seems like good odds that melting rate this month could be record low unless it doesn't speed up soon.


it will  :) :) :) :) :) :)

weatherdude88

  • Frazil ice
  • Posts: 154
    • View Profile
  • Liked: 12
  • Likes Given: 0
Re: 2020 Sea ice area and extent data
« Reply #1249 on: August 12, 2020, 04:02:47 PM »
For 8.11.2020, the NSIDC northern hemisphere sea ice extent single daily value is 5.579 millions of square kilometers. This is a decrease of 16,000 square kilometers from the previous day.

2020 is now in fifth place for the date. 2020 now has more sea ice extent for the date, than 2007,2012, 2017, and 2019. 2020 may fall into sixth place in the next 2 days, as 2016 has some significant losses the next several days.