Support the Arctic Sea Ice Forum and Blog

Author Topic: Greenland 2019 Melt Season  (Read 23135 times)

Mr. Ä

  • ASIF Lurker
  • Posts: 3
  • I should choose a better names to use.
    • View Profile
  • Liked: 0
  • Likes Given: 0
Re: Greenland 2019 Melt Season
« Reply #150 on: May 27, 2019, 05:40:49 PM »
So much sediment flowing to the fjords already. And new dark ground being uncovered every day. Looks like it could be a bad year for Kangerlussuaq harbor.
« Last Edit: May 28, 2019, 06:54:38 PM by Mr. Ä »

Stephan

  • ASIF Citizen
  • Posts: 473
    • View Profile
  • Liked: 135
  • Likes Given: 73
Re: Greenland 2019 Melt Season
« Reply #151 on: May 27, 2019, 07:52:52 PM »
Early melting also on Greenland's eastern side.
The webcam image shows two melt ponds on Freya Gletscher, located at an altitude of 1.053 m asl on an island south of Zackenberg Bay. I added the coordinates into the picture.
In 2016 the first melt pond was visible on June 13, in 2017 it was June 6.
2018 had no pictures, the webcam was out of service from May 3 on.
Unfortunately there are no older pictures available.
Link to the website: https://www.foto-webcam.eu/webcam/freya1/2017/06/04/1200
See attached photo

oren

  • ASIF Governor
  • Posts: 3692
    • View Profile
  • Liked: 491
  • Likes Given: 1008
Re: Greenland 2019 Melt Season
« Reply #152 on: May 28, 2019, 05:43:47 AM »
Beautiful webcam, thanks for the link.

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #153 on: May 28, 2019, 12:21:19 PM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 27 May 2019

Weekly accumulated SMB anomaly map attached.

16 to 21 May Precipitation outweighs melt on these days, but not by much.
22 to 27 May Melt outweighs precipitation on these days.

Next 10 days The GFS forecast still saying Southern Greenland will be very dry, with even the SE looking extremely dry. Precipitation coming into the North - I don't think that is usual. 

Very good conditions for insolation in the Southern half (that's sunshine all day and night 24/7). Above zero temperatures on the East and especially the West coastal fringes (and Baffin Bay) in the long afternoons.  My prediction that belongs to me is that there will be yet more days of SMB loss (unless outweighed by increasing precipitation in the North later in the forecast period).

The persistence of melt, and the persistent low precipitation is unusual, hence the accumulated SMB gain in the 2018-19 year at circa 60 GT below average, in contrast to the above average mass gains in the previous 2 years.
[/quote]
"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)

Tor Bejnar

  • ASIF Governor
  • Posts: 2578
    • View Profile
  • Liked: 214
  • Likes Given: 82
Re: Greenland 2019 Melt Season
« Reply #154 on: May 28, 2019, 04:01:37 PM »
Quote
The persistence of melt, and the persistent low precipitation is unusual

From climatology, I think the melt is unusual, but not the lack of precipitation.  If low precipitation continues through June, that would be unusual.  See Sleepy's 'original post' to see the whole year's daily average precipitation GIF.
Arctic ice is healthy for children and other living things.

b_lumenkraft

  • ASIF Upper Class
  • Posts: 1442
    • View Profile
  • Liked: 304
  • Likes Given: 1425
Re: Greenland 2019 Melt Season
« Reply #155 on: May 29, 2019, 08:07:53 AM »
That looks like a lot of water discharging downhill from melt ponds?

I would agree. The whole ice sheet border area is thawing.

return [B8A*1, B03*1,B02*1] gives you a nice blue tint for melting snow and ice.

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #156 on: May 29, 2019, 08:37:22 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 28 May 2019

16 to 21 May Precipitation outweighs melt on these days, but not by much.
22 to 28 May Melt outweighs precipitation on these days.

Next 10 days For the first 5 days the GFS forecast still saying Southern Greenland will be very dry, with even the SE looking extremely dry. After that precipitation coming into the North and then also from the  South. 

Very good conditions for insolation in the Southern half to begin with (that's sunshine all day and night 24/7). Above zero temperatures on the East and especially the West coastal fringes (and Baffin Bay) in the long afternoons.  My prediction that belongs to me is that there will be a few more days of SMB loss until  outweighed by increasing precipitation later in the forecast period.

The accumulated SMB gain in the 2018-19 year is well below average, in contrast to the above average mass gains in the previous 2 years.
_________________________________________________________
Quote from DMI Polar Portal....
Note, when comparing with the surface mass balance under ”Daily change”, that melting can occur without surface mass loss since the meltwater can refreeze in the underlying snow. Likewise, surface mass loss can occur without melting due to sublimation.
"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)

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #157 on: May 30, 2019, 10:59:27 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 29 May 2019

16 to 21 May Precipitation outweighs melt on these days, but not by much.
22 to 29 May Melt outweighs precipitation on these days.

Next 10 days The GFS forecast still saying Greenland will be mostly dry, with even the SE looking extremely dry. Some moderate precipitation on the West coast half-way up Baffin Bay.

Good conditions for insolation in general (that's sunshine all day and night 24/7). Above zero temperatures on the East and especially the West coastal fringes (and Baffin Bay) in the long afternoons.  But no indication that melt will increase substantially. Note that some of the daily SMB loss is due to sublimation. See note below.

My prediction that belongs to me is that there will be more days of SMB loss but becoming closer to the average daily SMB change.

The below average SMB accumulated gain for the 2018-19 year is still increasing, in contrast to the above average mass gains in the previous 2 years.
_________________________________________________________
Quote from DMI Polar Portal....
Note, when comparing with the surface mass balance under ”Daily change”, that melting can occur without surface mass loss since the meltwater can refreeze in the underlying snow. Likewise, surface mass loss can occur without melting due to sublimation.
"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)

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #158 on: May 31, 2019, 11:28:03 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 30 May 2019

16 to 21 May Precipitation outweighs melt on these days, but not by much.
22 to 29 May Melt outweighs precipitation on these days.

30 May Precipitation outweighs melt on this day, but not by much.

Next 10 days The GFS forecast still saying Greenland will be mostly dry, with even the SE looking extremely dry. Some moderate precipitation on the West coast.

Good conditions for insolation in general (that's sunshine all day and night 24/7). Above zero temperatures on the East and especially the West coastal fringes (and Baffin Bay) in the long afternoons.  But no indication that melt will increase substantially. Note that some of the daily SMB loss is due to sublimation.

The below average SMB accumulated gain for the 2018-19 year is still increasing, in contrast to the above average mass gains in the previous 2 years.
_________________________________________________________
My prediction that belongs to me is that there will be more days of SMB loss but becoming much closer to the average daily SMB change. Given this reversion to far more average daily change, postings will be reduced to the weekly update of the accumulated SMB anomalies map.
« Last Edit: May 31, 2019, 12:55:20 PM by gerontocrat »
"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)

b_lumenkraft

  • ASIF Upper Class
  • Posts: 1442
    • View Profile
  • Liked: 304
  • Likes Given: 1425
Re: Greenland 2019 Melt Season
« Reply #159 on: May 31, 2019, 04:04:02 PM »
How we already know 2019 will be a big melt year for Greenland


oren

  • ASIF Governor
  • Posts: 3692
    • View Profile
  • Liked: 491
  • Likes Given: 1008
Re: Greenland 2019 Melt Season
« Reply #160 on: May 31, 2019, 04:46:48 PM »
How we already know 2019 will be a big melt year for Greenland
I must say this is quite disturbing.
Does anyone know if the station data quoted in the video is available somewhere online?
(Albedo, snow depth, temperature).

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #161 on: May 31, 2019, 05:47:40 PM »
How we already know 2019 will be a big melt year for Greenland
I must say this is quite disturbing.
Does anyone know if the station data quoted in the video is available somewhere online?
(Albedo, snow depth, temperature).
Go to http://polarportal.dk/en/greenland/surface-conditions/

Choose a weather station (e.g. ) and
Quote
"By holding the mouse over the circles, you can see the day’s weather observations from meteorological stations that are used to monitor the melting processes.
Albedo not available by individual stations, but certainly as a map updated quite often with slider on main DMI site.

Click on "See Details at GEUS" and you get loads of stuff, not just about the weather stations, but about just about everything to do with the Greenland Ice Sheet.. Indeed, I had not a clue all this stuff was there.
_______________________________________________________________________
This year is different from the last 2 years - and perhaps it was the last 2 years that were the aberration. see last image - can't remember from whence it came - SIDC Greenland Today?
"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)

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #162 on: May 31, 2019, 06:12:36 PM »
Re video above...
So there was I thinking that perhaps things were getting to look much more like average, and then the guy from DMI tells us the early melt has pre-conditioned the Greenland surface for a major melt year.



"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)

b_lumenkraft

  • ASIF Upper Class
  • Posts: 1442
    • View Profile
  • Liked: 304
  • Likes Given: 1425
Re: Greenland 2019 Melt Season
« Reply #163 on: May 31, 2019, 06:31:11 PM »
My takeaway from the video was the point that we are so far ahead of 2012 this year.

But yes, they kinda cherrypicked that NUK region there and made extrapolations.

Tor Bejnar

  • ASIF Governor
  • Posts: 2578
    • View Profile
  • Liked: 214
  • Likes Given: 82
Re: Greenland 2019 Melt Season
« Reply #164 on: May 31, 2019, 06:38:43 PM »
Re Oren posting the Jason Box explanation that 2019 does not look good for Greenland's ice:  how can one "like" such bad news?  (But I'm grateful anyway.)

By the way, if you search for "Jason Box" in the ASIF Search, you'll get some 30 references to him starting in 2013.  (OT: I don't like that he sees geoengineering as something we must do, but it may be the only way to avoid 4C - but unless the geoengineering lowers CO2 concentrations, the oceans will become toxic.) 
Arctic ice is healthy for children and other living things.

Stephan

  • ASIF Citizen
  • Posts: 473
    • View Profile
  • Liked: 135
  • Likes Given: 73
Re: Greenland 2019 Melt Season
« Reply #165 on: May 31, 2019, 07:34:45 PM »
How we already know 2019 will be a big melt year for Greenland
Thanks for sharing this important information with us.

b_lumenkraft

  • ASIF Upper Class
  • Posts: 1442
    • View Profile
  • Liked: 304
  • Likes Given: 1425
Re: Greenland 2019 Melt Season
« Reply #166 on: May 31, 2019, 07:37:08 PM »
Welcome Stephan :)

sidd

  • ASIF Governor
  • Posts: 4535
    • View Profile
  • Liked: 155
  • Likes Given: 0
Re: Greenland 2019 Melt Season
« Reply #167 on: May 31, 2019, 09:51:19 PM »
Re:  difference between "average" and "mean"

educate me please ?

sidd

FrostKing70

  • ASIF Lurker
  • Posts: 75
    • View Profile
  • Liked: 8
  • Likes Given: 12
Re: Greenland 2019 Melt Season
« Reply #168 on: May 31, 2019, 09:57:05 PM »
Oops, I confused "mean" and "median"!

An example with a small data set:

Data :  1,2,3,16,18

This data set has 5 data points which sum to 40.

The average is the sum divided by the number of data points so 40/5 = 8, which is the same as the mean

The median is the middle number when the data is arranged numerically, so the median for this data set is 3

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #169 on: May 31, 2019, 10:36:49 PM »
Oops, I confused "mean" and "median"!

An example with a small data set:

Data :  1,2,3,16,18

This data set has 5 data points which sum to 40.

The average is the sum divided by the number of data points so 40/5 = 8, which is the same as the mean

The median is the middle number when the data is arranged numerically, so the median for this data set is 3
The example given is why the median is often used when distribution is extremely skewed, e.g. income distribution in the USA and UK.
"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)

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #170 on: June 01, 2019, 10:18:17 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 30 May 2019

16 to 21 May Precipitation outweighs melt on these days, but not by much.
22 to 29 May Melt outweighs precipitation on these days.

30 -31 May Precipitation outweighs melt on this day, but not by much.

Next 10 days The GFS forecast still saying Greenland will be mostly dry, with even the SE looking extremely dry. Some moderate precipitation on the West coast.
_________________________________________________________
My prediction that belongs to me is that there will be more days of SMB loss but becoming much closer to the average daily SMB change. Given this reversion to far more average daily change, postings will be reduced to the weekly update of the accumulated SMB anomalies map.
[/quote]
"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)

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #171 on: June 04, 2019, 03:53:58 PM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 3 June 2019

It is the day of the weekly update of the accumulated SMB anomalies map.

Melt now below average, but precipitation even more so. So daily SMB change being close to zero or a bit -ve. Shows clearly on the accumulated SMB graph.

The growth of SMB +ve anomalies in the SE in contrast with the growth of -ve anomalies over the rest of Greenland is shown in the attached gif of monthly changes (click to play).

The effect on Albedo in May is shown on the other gif.

Next 10 days The GFS forecast still saying Greenland will be fairly dry, with moderate precipitation in the north and north west especially.
_________________________________________________________
My prediction that belongs to me (that has been OK so far) is that there will be more days of SMB loss but becoming much closer to the average daily SMB change.

Given this reversion to far more average daily change, postings will be reduced to the weekly update of the accumulated SMB anomalies map.
"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)

oren

  • ASIF Governor
  • Posts: 3692
    • View Profile
  • Liked: 491
  • Likes Given: 1008
Re: Greenland 2019 Melt Season
« Reply #172 on: June 04, 2019, 05:25:30 PM »
Thanks for your constant updates GRC. I think SMB max for the year can already be called at around May 20th, ~3 weeks earlier than usual. Let's hope for a benign melt season (and for GRACE data).

Darvince

  • ASIF Citizen
  • Posts: 262
    • View Profile
    • NSIDC Daily
  • Liked: 13
  • Likes Given: 5
Re: Greenland 2019 Melt Season
« Reply #173 on: June 08, 2019, 07:51:46 AM »
Holy sh*t



It's just as bad the D4 high, too, and the forecast trend has only gotten worse, and it's also on the Euro, as far as I can tell...

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #174 on: June 08, 2019, 11:16:56 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 7 June 2019

I picked up on the same theme as Darvince. An event on its way.

Recent Days
Melt now below average, but precipitation even more so. So daily SMB change being close to zero or a bit -ve. Shows clearly on the accumulated SMB graph.

Next 7 days
Precipitation
The GFS forecast still saying Greenland will be fairly  to very dry, with light precipitation in the west and a bit more in the SE. It is also likely that it will be a mix of rain and snow.

Melt and SMB change
Temperatures, especially in the long afternoons, are predicted to increase over the following days to a maximum on Thursday, when most of Greenland will be above zero. and to remain high (but not as high)  over a substantial area of Greenland in the following days.

The combination of ever increasing melt, together with low precipitation (some of which will fall as rain) suggest a major mass loss developing over the next week.
_________________________________________________________
My prediction that belonged to me (that has been OK so far) was that there will be more days of SMB loss but becoming much closer to the average daily SMB change.

That prediction looks likely to be another one for the rubbish tip.
"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)

Shared Humanity

  • ASIF Governor
  • Posts: 3498
    • View Profile
  • Liked: 189
  • Likes Given: 22
Re: Greenland 2019 Melt Season
« Reply #175 on: June 08, 2019, 06:26:55 PM »

My prediction that belonged to me (that has been OK so far) was that there will be more days of SMB loss but becoming much closer to the average daily SMB change.

That prediction looks likely to be another one for the rubbish tip.

That prediction was spot on IMHO as there was a significant stall in SMB loss. The oncoming melt simply exemplifies the impact of short term weather.

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #176 on: June 09, 2019, 11:21:35 AM »

Melt and SMB change
Temperatures, especially in the long afternoons, are predicted to increase over the following days to a maximum on Thursday, when most of Greenland will be above zero. and to remain high (but not as high)  over a substantial area of Greenland in the following days.

The combination of ever increasing melt, together with low precipitation (some of which will fall as rain) suggest a major mass loss developing over the next week.

The melt event looks like being stronger, starting earlier and lasting longer.
____________________________________________________

Won't do the snow on Ellesmere Island, and the sea ice in Baffin Bay, the CAA and Hudson Bay a lot of good, either.
"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)

oren

  • ASIF Governor
  • Posts: 3692
    • View Profile
  • Liked: 491
  • Likes Given: 1008
Re: Greenland 2019 Melt Season
« Reply #177 on: June 09, 2019, 11:40:13 AM »
Wow. That's some kind of event indeed.

ArcticMelt2

  • ASIF Citizen
  • Posts: 219
    • View Profile
  • Liked: 25
  • Likes Given: 0
Re: Greenland 2019 Melt Season
« Reply #178 on: June 09, 2019, 11:56:35 AM »
This is very bad. A strong melting has already begun yesterday. The situation is aggravated by a cold winter (little snow). Expected a powerful flood, as in 2012.

It is interesting to know how soon the first data from GRACE-2 will appear.

Csnavywx

  • ASIF Citizen
  • Posts: 493
    • View Profile
  • Liked: 13
  • Likes Given: 0
Re: Greenland 2019 Melt Season
« Reply #179 on: June 09, 2019, 02:17:08 PM »
This is setting up to be an extreme event. Freezing levels on the FV3 and EC get very high (3000-4000m), possibly all the way to the summit. 700mb temps rise to +5 to +10C  for an extended period, meaning widespread intense surface melt and ponding. These temp values aloft are very similar to an unmodified subtropical airmass (500mb temps approaching -10C).

Stephan

  • ASIF Citizen
  • Posts: 473
    • View Profile
  • Liked: 135
  • Likes Given: 73
Re: Greenland 2019 Melt Season
« Reply #180 on: June 09, 2019, 05:33:51 PM »
Slow, but constant snow melt at Freya Gletscher, T = +0.4°C
No additional melt ponds so far.
https://www.foto-webcam.eu/webcam/freya1/

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #181 on: June 11, 2019, 08:55:23 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 10 June 2019

It is the day of the weekly update of the accumulated SMB anomalies map.

Melt now below average, but precipitation even more so. So daily SMB change being below zero and lower than average. This difference is increasing and shows clearly on the accumulated SMB graph.

The SMB +ve anomalies in the SE in contrast with the growth of -ve anomalies over the rest of Greenland is increasing.

Next 10 days
Melt A melting event is commencing as much of Greenland becomes above freezing on Wednesday and Thursday. After that the event moderates somewhat but temperatures remain above average.

Precipitation The GFS forecast still saying Greenland will be fairly dry.
_________________________________________________________
My prediction that belongs to me (that to my surprise has been OK so far) is that there will be days of well above average melt and SMB loss, peaking on Wednesday or Thursday and moderating somewhat afterwards.
"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)

Greenbelt

  • ASIF Citizen
  • Posts: 124
    • View Profile
  • Liked: 12
  • Likes Given: 15
Re: Greenland 2019 Melt Season
« Reply #182 on: June 11, 2019, 06:56:40 PM »
Noticed prediction for very warm temps across most of Greenland this week.  Jet stream his highly N-S and very wavy across N America today.

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #183 on: June 12, 2019, 09:23:28 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 11 June 2019

Melt was stronger but still below average, and it snowed in the SE. Hence SMB loss / gain about zero but ever increasing difference between the SE coastal fringe accumulated +ve SMB anomaly and the -ve anomaly for the rest of Greenland.
_________________________________________________________
[/b]My prediction that belongs to me (that to my surprise has been OK so far) is that there will be days of well above average melt and SMB loss, peaking on Wednesday or Thursday and moderating somewhat afterwards.
[/quote]
"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)

b_lumenkraft

  • ASIF Upper Class
  • Posts: 1442
    • View Profile
  • Liked: 304
  • Likes Given: 1425
Re: Greenland 2019 Melt Season
« Reply #184 on: June 12, 2019, 04:30:39 PM »
Oh, boi.

This is Greenland west coast in the M8 band.

That darkening means melting.

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #185 on: June 12, 2019, 06:41:47 PM »
Oh, boi.

That darkening means melting.

http://nsidc.org/greenland-today/ have done a report on April & May 2019. Confirms what I have been wittering on about recently.

Note how their melt images and graphs tend to show a greater area and percentage of melt compared with DMI. Algorithms.....
"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)

Darvince

  • ASIF Citizen
  • Posts: 262
    • View Profile
    • NSIDC Daily
  • Liked: 13
  • Likes Given: 5
Re: Greenland 2019 Melt Season
« Reply #186 on: June 12, 2019, 11:02:22 PM »
Oh, boi.

This is Greenland west coast in the M8 band.

That darkening means melting.

Very impressive... Over how many hours is this?

ArcticMelt2

  • ASIF Citizen
  • Posts: 219
    • View Profile
  • Liked: 25
  • Likes Given: 0
Re: Greenland 2019 Melt Season
« Reply #187 on: June 13, 2019, 03:41:48 AM »
At the Summit +0.7 Celsius.

JayW

  • ASIF Citizen
  • Posts: 438
    • View Profile
  • Liked: 109
  • Likes Given: 93
"To defy the laws of tradition, is a crusade only of the brave" - Les Claypool

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #189 on: June 13, 2019, 07:27:06 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 12 June 2019

Melt was much stronger and well above average, and it snowed in the SE. Hence SMB was a mass loss but not by much, but increasing again the difference between the SE coastal fringe accumulated +ve SMB anomaly and the -ve anomaly for the rest of Greenland.
_________________________________________________________
[/b]My prediction that belongs to me is now that today -Thursday - will see a strong melt and less snow in the SE, and in the days after melt moderating considerably, i.e. somewhat less of a major event than I thought a few days ago.
"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)

b_lumenkraft

  • ASIF Upper Class
  • Posts: 1442
    • View Profile
  • Liked: 304
  • Likes Given: 1425
Re: Greenland 2019 Melt Season
« Reply #190 on: June 13, 2019, 09:55:26 AM »
Very impressive... Over how many hours is this?

Sorry, should have mentioned it.

It's roughly 2 days, but i skipped the still frames. So the last 4-5 frames where the darkening is expanding so dramatically is only ~ 4-5 hours.

b_lumenkraft

  • ASIF Upper Class
  • Posts: 1442
    • View Profile
  • Liked: 304
  • Likes Given: 1425
Re: Greenland 2019 Melt Season
« Reply #191 on: June 13, 2019, 01:19:41 PM »
North Greenland. That glacier at Nares Land.

(Click to play)

JayW

  • ASIF Citizen
  • Posts: 438
    • View Profile
  • Liked: 109
  • Likes Given: 93
Re: Greenland 2019 Melt Season
« Reply #192 on: June 13, 2019, 08:56:41 PM »
 :o
"To defy the laws of tradition, is a crusade only of the brave" - Les Claypool

oren

  • ASIF Governor
  • Posts: 3692
    • View Profile
  • Liked: 491
  • Likes Given: 1008
Re: Greenland 2019 Melt Season
« Reply #193 on: June 13, 2019, 09:03:19 PM »
An event indeed!

b_lumenkraft

  • ASIF Upper Class
  • Posts: 1442
    • View Profile
  • Liked: 304
  • Likes Given: 1425
Re: Greenland 2019 Melt Season
« Reply #194 on: June 13, 2019, 09:09:08 PM »
I saw it was bad. I never imagined it to be that bad in the numbers.  :-[

Stephan

  • ASIF Citizen
  • Posts: 473
    • View Profile
  • Liked: 135
  • Likes Given: 73
Re: Greenland 2019 Melt Season
« Reply #195 on: June 13, 2019, 09:40:25 PM »
No further melt ponds on Freya Gletscher today, but a faster snow melt than at all the other days before. And temperatures now above +10°C [guessing they do not represent the measurement standards as they are usual in weather stations].
Link: https://www.foto-webcam.eu/webcam/freya1/

gerontocrat

  • ASIF Royalty
  • Posts: 5001
    • View Profile
  • Liked: 737
  • Likes Given: 16
Re: Greenland 2019 Melt Season
« Reply #196 on: June 13, 2019, 10:00:31 PM »
Greenland very warm Thursday (today) Friday and Saturday. Stays above freezing on the coasts after that but not as extreme.

Max Temps attached
"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)

Rod

  • ASIF Citizen
  • Posts: 129
    • View Profile
  • Liked: 55
  • Likes Given: 6
Re: Greenland 2019 Melt Season
« Reply #197 on: June 14, 2019, 03:07:28 AM »
I hate to sound too dramatic, but this event is pretty damn dramatic for this early in the year, Greenland is on 🔥 (Worldview Bands 3-6-7).

werther

  • ASIF Middle Class
  • Posts: 717
    • View Profile
  • Liked: 2
  • Likes Given: 0
Re: Greenland 2019 Melt Season
« Reply #198 on: June 14, 2019, 04:50:13 AM »
Just saw the Greenland temp spike on the graphs page...very worrying indeed!

b_lumenkraft

  • ASIF Upper Class
  • Posts: 1442
    • View Profile
  • Liked: 304
  • Likes Given: 1425
Re: Greenland 2019 Melt Season
« Reply #199 on: June 14, 2019, 07:55:58 AM »
It keeps going... obviously, given the temps.

This is a GIF showing M8 band overlayed with 'natural colours'.