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gerontocrat

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Greenland 2019 Melt Season
« on: January 13, 2019, 08:37:02 AM »
https://www.dmi.dk/en/groenland/maalinger/greenland-ice-sheet-surface-mass-budget/

2019 MELT SEASON - 2018-2019 SMB SEASON As at 12 Jan 2019

Some dry days and wet days so far this year.

And for the next 5 to 10 days it looks like,
- no melt,
- below average precipitation,
- SMB balance year to date a bit more below average.


_____________________________________________________________
SMB = Surface Mass Balance, which excludes mass loss from calving that on average is greater than SMB gain in the year. i.e. usually Greenland loses mass every year.

GRACE follow-on data - where are you?
_____________________________________________________________
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #1 on: January 20, 2019, 06:25:01 PM »
https://www.dmi.dk/en/groenland/maalinger/greenland-ice-sheet-surface-mass-budget/

2019 MELT SEASON - 2018-2019 SMB SEASON As at 19 Jan 2019

Some dry days and wet days so far this year.

And for the next 5 to 10 days it looks like,
- no melt,
- Some dryish days and some wettish days,
- SMB balance year to date stays below average.

In other words - no change


_____________________________________________________________
SMB = Surface Mass Balance, which excludes mass loss from calving that on average is greater than SMB gain in the year. i.e. usually Greenland loses mass every year.

GRACE follow-on data - where are you?
_____________________________________________________________
"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)

lurkalot

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oren

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Re: Greenland 2019 Melt Season
« Reply #3 on: January 22, 2019, 01:05:42 PM »
I haven't read the whole paper yet, buy as the study uses GRACE data up to 2016, I would guess the only news is the locality of mass loss. If the Southwest is producing more melt, some other area of the ice sheet is producing less, given that GRACE has measured the total mass of the ice sheet with reasonable accuracy.
The big news will come once the new GRACE data becomes operational. Then we will know if ice mass loss has slowed or even stopped in 2017-18, as indicated by a better surface mass balance and by the seeming slowdown in Jakobshavn calving.

gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #4 on: January 24, 2019, 07:24:10 AM »
https://www.dmi.dk/en/groenland/maalinger/greenland-ice-sheet-surface-mass-budget/

2019 MELT SEASON - 2018-2019 SMB SEASON As at 19 Jan 2019

Some dry days and wet days so far this year.

And for the rest of he month it looks like,
- no melt,
- Some dryish days and some wettish days but overall below average,
- SMB balance year to date further below average.

In other words - not a lot of change


_____________________________________________________________
SMB = Surface Mass Balance, which excludes mass loss from calving that on average is greater than SMB gain in the year. i.e. usually Greenland loses mass every year.

GRACE follow-on data - where are you?
_____________________________________________________________
"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

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Re: Greenland 2019 Melt Season & Surface Mass Balance (SMB) 2018-19
« Reply #5 on: January 30, 2019, 12:39:54 PM »
https://www.dmi.dk/en/groenland/maalinger/greenland-ice-sheet-surface-mass-budget/

2019 MELT SEASON - 2018-2019 SMB SEASON As at 29 Jan 2019

In the last week,
- no melt,
- Some dryish days and some wettish days but overall below average,
- SMB balance year to date further below average.

And for next 10 days it looks like,
- no melt,
- Some dryish days and some wettish days but overall below average,
- SMB balance year to date further below average.

In other words - not a lot of change


_____________________________________________________________
SMB = Surface Mass Balance, which excludes mass loss from calving that on average is greater than SMB gain in the year. i.e. usually Greenland loses mass every year.

GRACE follow-on data - where are you? Has Trump's shutdown delayed things?
_____________________________________________________________
"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

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Re: Greenland 2019 Melt Season & Surface Mass Balance (SMB) 2018-19
« Reply #6 on: February 02, 2019, 09:35:33 AM »
https://www.dmi.dk/en/groenland/maalinger/greenland-ice-sheet-surface-mass-budget/

2019 MELT SEASON - 2018-2019 SMB SEASON As at 1 Feb 2019

In the last week,
- no melt,
- Some dry days and some wettish days but overall below average,
- SMB balance year to date further below average.

And for next 10 days it looks like,
- no melt,
- Mostly dryish days and some wettish days but overall well below average,
- SMB balance year to date further below average.

In other words - perhaps a significant change due to lack of precipitation. (Most of Canada looking pretty dry as well)


_____________________________________________________________
SMB = Surface Mass Balance, which excludes mass loss from calving that on average is greater than SMB gain in the year. i.e. usually Greenland loses mass every year.

GRACE follow-on data - where are you? Has Trump's shutdown delayed things?
_____________________________________________________________
[/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

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Re: Greenland 2019 Melt Season
« Reply #7 on: February 04, 2019, 11:19:16 PM »
Denmark's Meteorological Institute have gone and decided to do a website makeover. Perhaps they have got a new IT director who has to show he has done something, anything, to justify his existence.

So asking for this;- https://www.dmi.dk/en/groenland/maalinger/greenland-ice-sheet-surface-mass-budget/

gets you this:-

The page does not exist
Sorry, we can't find the page you're looking for. This may be because beta.dmi.dk is under construction.

Try one of these links instead:
front page
switch, Contact
About the weather
How to get the most out of the weather on the new website


DMI temp north of 80 link still works, as does the SST site, though I expect this will be screwed up as well.
"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

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Re: Greenland 2019 Melt Season & Surface Mass Balance (SMB) 2018-19
« Reply #8 on: February 06, 2019, 10:08:29 AM »
The Danes haved moved the information to their polar portal at:-
http://polarportal.dk/en/greenland/surface-conditions/

They've also changed the graphics

2019 MELT SEASON - 2018-2019 SMB SEASON As at 5 Feb 2019

In the last week,
- no melt (apart from some sublimation),
- Some dry days and some wettish days but overall below average,
- SMB balance year to date further below average. Image shows where precipitation is and is not happening.

And for next 10 days it looks like,
- no melt,
- Mostly dryish days and some wettish days but overall below average,
- SMB balance year to date further below average.

In other words - perhaps a continuing change due to lack of precipitation. (Most of Canada looking pretty dry as well). GFS image attached

They've also added an albedo image

_____________________________________________________________
SMB = Surface Mass Balance, which excludes mass loss from calving that on average is greater than SMB gain in the year. i.e. usually Greenland loses mass every year.

GRACE follow-on data - where are you?
_____________________________________________________________
"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)

litesong

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Re: Greenland 2019 Melt Season & Surface Mass Balance (SMB) 2018-19
« Reply #9 on: February 07, 2019, 05:08:46 AM »
And for next 10 days it looks like,
- no melt,
- Mostly dryish days and some wettish days but overall below average,
- SMB balance year to date further below average.

In other words - perhaps a continuing change due to lack of precipitation. (Most of Canada looking pretty dry as well).
Meanwhile:
Our Pacific Northwest U.S., after record January 2019 warm temperature, now has Arctic & far northern Canadian cold pushing through the BC's Fraser Valley, spreading cold, mixing with Pacific Ocean moisture & presenting a foot of snow, east of Salish Sea(Puget Sound). Our local morning temps are 11degF. Now, predictions are for more snow. Our increasing cold, coming from Canada & the Arctic, & Pacific moisture, NOT reaching Canada, agrees with your assessment for northern Canada & the Arctic.

gerontocrat

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Re: Greenland 2019 Melt Season & SMB 2018-19
« Reply #10 on: February 09, 2019, 10:23:09 AM »
http://polarportal.dk/en/greenland/surface-conditions/

2019 MELT SEASON - 2018-2019 SMB SEASON As at 8 Feb 2019

In the last few days,
- no melt (apart from some sublimation),
- Some dry days and some wettish days but overall well below average,
- SMB balance year to date further below average. 2nd image shows where precipitation is and is not happening.

And for next 10 days it looks like,
- no melt,
- Mostly dryish days and some wettish days but overall below average,
- SMB balance year to date further below average. At already well over 50 GT or 25% below that average, becoming significant.

In other words - perhaps a continuing change due to lack of precipitation. (Most of Central and Northern Canada looking pretty dry as well). GFS image attached.
_____________________________________________________________
SMB = Surface Mass Balance, which excludes mass loss from calving that on average is greater than SMB gain in the year. i.e. usually Greenland loses mass every year.

GRACE follow-on data - where are you?
_____________________________________________________________
"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)

FrostKing70

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Re: Greenland 2019 Melt Season
« Reply #11 on: February 12, 2019, 04:20:44 PM »
Dropping towards the bottom on SMB

gerontocrat

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Re: Greenland 2019 Melt Season & SMB 2018-19
« Reply #12 on: February 15, 2019, 01:49:22 PM »
http://polarportal.dk/en/greenland/surface-conditions/

2019 MELT SEASON - 2018-2019 SMB SEASON As at 14 Feb 2019

In the last few days,
- no melt (apart from some sublimation),
- Some dry days and some wettish days but overall well below average,
- SMB balance year to date further below average.

And for next 10 days it looks like,
- no melt,
- Mostly dryish days and some wettish days but overall below average,
- SMB balance year to date further below average. At already well over 50 GT becoming significant. This is in major contrast with Snow Water Equivalent (i.e. Mass) in North America and Eurasia both running at well over +1 SD above average.

In other words - perhaps a continuing change to further below average SMB due to lack of precipitation.  GFS image attached.
_____________________________________________________________
SMB = Surface Mass Balance, which excludes mass loss from calving that on average is greater than SMB gain in the year. i.e. usually Greenland loses mass every year.

GRACE follow-on data - where are you? This is what Germany said late last year___
GRACE Follow-On: Mission Status and Schedule
Mission operations are currently nominal, with continuous collection of K-band ranging
observations. The mission is currently in IOC, with a planned transition into Phase-E
(Science Phase) on Jan-28, 2019. After a Validation & Verification phase (up to 120-
days), Level-1 Science Data deliveries will commence in Spring 2019
_____________________________________________________________
"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)

FrostKing70

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Re: Greenland 2019 Melt Season
« Reply #13 on: February 18, 2019, 05:47:37 PM »
Line continues to trend towards the lower edge of the 30 year band:

oren

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Re: Greenland 2019 Melt Season
« Reply #14 on: February 19, 2019, 04:11:37 AM »
I must say it's becoming a bit disturbing. A lot of it is random variation but recently all coins fell on the same side. After a couple of good years, we may be sliding back towards the abyss.

gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #15 on: February 20, 2019, 01:19:03 PM »
I must say it's becoming a bit disturbing. A lot of it is random variation but recently all coins fell on the same side. After a couple of good years, we may be sliding back towards the abyss.
Whereupon, it seems that maybe it is a case of "all-change".

http://polarportal.dk/en/greenland/surface-conditions/

In the last 2 days, precipitation has been above average. It looks very much as if the southern and eastern coasts of Greenland are going to have a lot of precipitation over at least the next week to 10 days. Is there a significant change in Arctic weather underway ?

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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #16 on: February 23, 2019, 11:51:41 AM »


http://polarportal.dk/en/greenland/surface-conditions/

In the last few days, precipitation has been well above average. However, the signal for above average precipitation in the next week or so seems to have weakened.
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #17 on: March 01, 2019, 01:22:33 PM »
http://polarportal.dk/en/greenland/surface-conditions/ as at Feb 28 2019

Note the strong sublimation on the West Coast on the 28th.

In the last few days, precipitation has been well above average and below average. However, the signal for precipitation in the next week or so seems to have weakened (as has that for North America as a whole).
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #18 on: March 06, 2019, 12:09:09 PM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 5 March 2019


In the last week or so , precipitation was well above average for a few days and in the last 2 days well below average.
Accumulated SMB in the year to date is well over 50 GT (circa 15 to 20%) below average.

The forecast for precipitation in the next week or so is for very low precipitation. The contrast with North America is great.
"Para a Causa do Povo a Luta Continua!"
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #19 on: March 12, 2019, 01:11:04 PM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 11 March 2019

In the last 5 days or so, precipitation was mostly well below average.
Accumulated SMB in the year to date is around 75 GT (circa 15 to 20%) below average.

The forecast for precipitation in the next week or so is for very low precipitation followed by in a few days by above average precipitation in the S.E. quadrant.

The contrast with North America is currently very great. However, there are signs for the remainder  of March of increased warmth meaning less snow and more rain..
"Para a Causa do Povo a Luta Continua!"
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #20 on: March 18, 2019, 11:28:48 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 17 March 2019

In the last 5 days or so, precipitation was mostly well below average.
Accumulated SMB in the year to date is around 75 GT or more (circa 15 to 20%) below average.

However, it looks likely that precipitation could be somewhat above average over the next few days. This includes at least one cyclonic event from the S.E. identified in the recent paper about the significance and increasing frequency of summer and winter rainfall events.

The contrast with North America continues - now N. America gets a bit dryer as Greenland gets a bit wetter.
___________________________________________________________________
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #21 on: March 23, 2019, 10:37:02 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 22 March 2019

In the last 5 days or so, precipitation was mostly a bit above average.
Accumulated SMB in the year to date is still around 75 GT or more (circa 15%) below average.

It looks likely that precipitation could be somewhat above average over the next few days and concentrated in the south. This includes at least one cyclonic event being rain from much farther south in the Atlantic which GFS assumes to turn to snow when hitting the Greenland coast, even though GFS shows at or above freezing temperatures on that southern coastal fringe. Increasing frequency of summer and winter rainfall events ?

The contrast with North America continues - now N. America gets a bit dryer as Greenland gets a bit wetter.
___________________________________________________________________
ps: Latest on GRACE Follow-on I can find is from https://climate.nasa.gov/vital-signs/ice-sheets/

Quote
Please note that the most recent data are from June 2017, when the GRACE mission concluded science operations. Users can expect new data from GRACE’s successor mission, GRACE Follow-On, in the summer of 2019.​
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FrostKing70

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Re: Greenland 2019 Melt Season
« Reply #22 on: March 28, 2019, 03:19:13 PM »
SMB continues to be at the lower end of the range...

Darvince

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Re: Greenland 2019 Melt Season
« Reply #23 on: March 31, 2019, 07:49:20 PM »
Looks like possibly the first melt event of the season coming in a few days? It brings with it rain, and snow for higher elevations.


gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #24 on: April 01, 2019, 12:03:13 PM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 31 March 2019

In the last 10 days or so, precipitation was more above average than below.
Accumulated SMB in the year to date is still around 75 GT (circa 15%) below average.

It looks likely that precipitation could be somewhat above average over the next few days and concentrated in the south. This includes at least one cyclonic event on this Tuesday as noted by Darvince (see post above) being rain from much farther south in the Atlantic which GFS assumes to turn to freezing rain and snow when hitting the Greenland SW coast, even though GFS shows at or above freezing temperatures on that southwest coastal fringe.
Will this show as melting on the DMI map for the day?
Increasing frequency of summer and winter rainfall events ?
___________________________________________________________________
ps: Latest on GRACE Follow-on I can find is from https://climate.nasa.gov/vital-signs/ice-sheets/

Quote
Please note that the most recent data are from June 2017, when the GRACE mission concluded science operations. Users can expect new data from GRACE’s successor mission, GRACE Follow-On, in the summer of 2019.​

pps: NSIDC's "Greenland Today" should be waking up this month.
"Para a Causa do Povo a Luta Continua!"
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #25 on: April 03, 2019, 10:25:48 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 31 March 2019

The cyclonic event on Tuesday  2 April as noted by Darvince (see post above) did happen. Parts of the SW coast and inland were above freezing. (first image). Rain from much farther south in the Atlantic was partly rain, partly freezing rain and partly snow. The rain is shown as penetrating some way inland (see image 2).

Did this show as melting on the DMI SMB map for the day? NO
___________________________________________________________________
ps: Latest on GRACE Follow-on can be found at https://media.gfz-potsdam.de/gfz/sec12/pdf/GRACE_FO_SDS_newsletter_No2.pdf

Data in May June?


pps: NSIDC's "Greenland Today" should be waking up this month.
[/quote]
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Darvince

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Re: Greenland 2019 Melt Season
« Reply #26 on: April 05, 2019, 04:19:06 AM »
There does seem to have been more than zero melt extent as calculated by DMI's melting algorithm rather than surface mass balance algorithm, seen here (look very closely at the southwest Greenland coast):



I am guessing that as usual for the earliest above-freezing temperatures, it shows as positive mass balance because any rain refroze in the ice.

gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #27 on: April 06, 2019, 09:22:52 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 5 April 2019

In the last week or so, precipitation was more above average than below.
Accumulated SMB in the year to date is still around 75 GT (circa 15%) below average.

On some days warmth has entered Baffin Bay with resulting melt (probably sublimation) along the SW coast (see todayssmb map). GFS predicts several days of fairly strong +ve temperature anomalies in Baffin Bay in the next 10 days. More sublimation, or even a melt event?

It looks likely that precipitation could be somewhat below average over the next 10 days apart from a small area of high precipitation on the SE coast.  This precipitation is predicted to come from the SE or East as a mixture of rain and snow.
___________________________________________________________________
"Para a Causa do Povo a Luta Continua!"
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uniquorn

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Re: Greenland 2019 Melt Season
« Reply #28 on: April 10, 2019, 10:48:50 PM »
Maybe it happens occasionally, but I don't remember seeing 125km winds over Greenland.
https://tinyurl.com/y2l287lk

gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #29 on: April 14, 2019, 10:27:27 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 13 April 2019

The 13th April was a genuine melting event (see first image attached). Only a little one but a melt event nevertheless.

In the last week or so, precipitation was more above average than below.
Accumulated SMB in the year to date is still well below average but increasing strongly, especially on the coastal region of the SE.

It looks likely that precipitation could be very much average over the next 10 days especially  on the SE coast.  Much of this precipitation is predicted to come from the SE or East as a mixture of rain and snow.
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #30 on: April 16, 2019, 11:05:54 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 15 April 2019

The 13th April melting event has continued to 15th April, only a little one but a bit stronger on the 15th. It may well be the last such event for at least 10 days
"Para a Causa do Povo a Luta Continua!"
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #31 on: April 17, 2019, 11:07:05 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 16 April 2019

I was wrong - again. The melting event has persisted into the 16th April.
Quote
The 13th April melting event has continued to 15th April, only a little one but a bit stronger on the 15th. It may well be the last such event for at least 10 days
"Para a Causa do Povo a Luta Continua!"
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #32 on: April 21, 2019, 06:40:32 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 20 April 2019

This melting event has persisted unto the 20th April.
Quote
The 13th April melting event has continued to 15th April, only a little one but a bit stronger on the 15th. It may well be the last such event for at least 10 days
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #33 on: April 23, 2019, 10:24:46 AM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 22 April 2019

Melting
The 13th April melting event has continued until the 22 April. Only a little one but a melt event nevertheless and early.. It looks as if the South West coast will be getting bursts of warmth on most days from 27th April onwards (per GFS). This is backed up by the weather forecast for Nuuk predicting daytime maxima of around +5 to +7 next week and beyond. This could produce a stronger and persistent melt event.

precipitation
In the last 2 weeks or so, precipitation was much above average.
Accumulated SMB in the year to date is still below average but increased strongly, especially on the coastal region of the SE.

It looks likely that precipitation could be very much average over the next 10 days especially  on the SE coast.  Much of this precipitation is predicted to come from the SE or East as a mixture of rain and snow.
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Stephan

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Re: Greenland 2019 Melt Season
« Reply #34 on: April 23, 2019, 07:42:48 PM »
This is the weather forecast for Narssasuaq, close to the southern tip of Greenland:
Looks like really melting weather there.

gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #35 on: April 25, 2019, 08:06:27 AM »
And GFS saying that Greenland (and Baffin Bay) is going to have a sustained and substantial melting event starting sometime this Sunday and continuing until ....?
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #36 on: April 26, 2019, 12:09:54 PM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 25 April 2019

Melting
The 13th April melting event has never totally stopped, just reduced. Only a little one but a melt event nevertheless and early and persistent.. It looks as if it is already a tad stronger on the 25th. It also looks as if the Southern Greenland coast will be getting bursts of warmth to above freezing on most days from 27th April onwards and very strongly in the entirety of Baffin Bay next Monday. (per GFS).

precipitation
In the last 2 weeks or so, precipitation was much above average. Accumulated SMB in the year to date is still below average but increased strongly, especially on the coastal region of the SE. 

It looks likely that precipitation could be very much average over the next 10 days especially  on the SE coast.  Much of this precipitation is predicted to come from the SE or East as a mixture of rain and snow.

It is just possible that melt could exceed precipitation for a day or two in the period Sunday to Tuesday. Now that would be early
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Stephan

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Re: Greenland 2019 Melt Season
« Reply #37 on: April 26, 2019, 03:21:04 PM »
Updated weather forecast for Narssarsuaq - still heading towards massive melting.

Tor Bejnar

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Re: Greenland 2019 Melt Season
« Reply #38 on: April 26, 2019, 03:43:25 PM »
Another forecast for Narsarsuaq is a little less hot (only up to 11º).  Here are the temp norms and extremes for this time of year for this south Greenland village.  Rain is definitely in the forecast!
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #39 on: April 27, 2019, 09:35:41 PM »
melt increases a little bit

For those who might not know, NSIDC has a Greenland webpage.
http://nsidc.org/greenland-today/

I think they use a somewhat different model that produces similar but not the same results as DMI
Also the maps are much lower resolution.

They also do not operate the site in winter as it really just looks at melt apart from the end of Greenland Year (Sept to August) analysis.
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gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #40 on: April 28, 2019, 01:28:09 PM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 27 April 2019

Melting
The 13th April melting event has never totally stopped, just reduced. Only a little one but a melt event nevertheless and early and persistent.. The melt is already stronger by the 27th. As yet the melt does not show on the West coast even though GFS showed above zero temperatures on that coast on Saturday. It also looks as if these bursts of warmth to above freezing on the Southern Greenland coast will be considerable stronger today (the 28th April), and in the entirety of Baffin Bay next Monday.

Indeed, the whole of Greenland looks like having very much above temperatures for a good few days.

I will be surprised if the melt map for today the 28th does not show melting on the West coast and also spreading further north on both coasts.

precipitation
In the last 2 weeks or so, precipitation was much above average. Accumulated SMB in the year to date is still below average but increased strongly, especially on the coastal region of the SE. 

GFS is indicating that over the next 10 days it looks like that precipitation could be very much below average over the next 10 days except for the extreme SE coast. In that small area  perhaps much of this very high precipitation could be a mixture of rain and snow.

It is just possible that melt could exceed precipitation for a day or two in Monday or Tuesday. Now that would be early
"Para a Causa do Povo a Luta Continua!"
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magnamentis

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Re: Greenland 2019 Melt Season
« Reply #41 on: April 28, 2019, 04:54:57 PM »
nice outlook for inhabitants:

Temps of:
>15C for several consecutive days, starting from tomorrow not that common in April AFAIK
« Last Edit: April 28, 2019, 07:46:17 PM by magnamentis »
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Niall Dollard

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Re: Greenland 2019 Melt Season
« Reply #42 on: April 28, 2019, 06:20:27 PM »
The east of Greenland has been warm of late (many stations up to 8 C) and now it will be the turn of the west.

There are quite a few different forecasts out there. All of them forecasting warmth but bit of a disagreement as to how warm it will get.

I tend to use the yr.no forecast for these lattitudes. 

Here is their forecast for Sisimiut (Qeqqata) - roughly in yellow area where Magnamentis has highlighted.

https://www.yr.no/place/Greenland/Qeqqata/Sisimiut/long.html

BenB

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Re: Greenland 2019 Melt Season
« Reply #43 on: April 29, 2019, 11:58:06 AM »
The (relatively) warm weather in Greenland is reflected in a further spike in the melt extent:


gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #44 on: April 29, 2019, 12:48:24 PM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 28 April 2019

Melt
And here is 28 April by DMI.  Definitely a chance of  daily SMB change going -ve over the next day or two. All depends on precipitation in the SE :- amount and rain / snow mixture.
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Niall Dollard

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Re: Greenland 2019 Melt Season
« Reply #45 on: April 30, 2019, 12:13:09 AM »
nice outlook for inhabitants:

Temps of:
>15C for several consecutive days, starting from tomorrow not that common in April AFAIK

Kangerlussuaq managed a max of 15.3 C today. Here is a picture of the weather station from Google Street taken in July 2016 (yes they even got to Greenland).

It's a dry spot, well inland. Could be almost mistaken for Arizona.  :)

https://goo.gl/maps/PGT8j2TiHdCxqjcF8


gerontocrat

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Re: Greenland 2019 Melt Season
« Reply #46 on: April 30, 2019, 12:08:10 PM »
http://polarportal.dk/en/greenland/surface-conditions/ as at 29 April 2019

Melt
And here is 29 April by DMI.  Precipitation > Melt.
Looking as if some level of melt going to persist for some time.
"Para a Causa do Povo a Luta Continua!"
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Tor Bejnar

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Re: Greenland 2019 Melt Season
« Reply #47 on: April 30, 2019, 04:42:15 PM »
The (relatively) warm weather in Greenland is reflected in a further spike in the melt extent:
...
I was curious to compare Ben's chart with 2012 - the year of the big melt.  NSIDC gives the comparison with their interactive map (with 2012 and 2019 pre-selected!)  I selected the years with notable early melt to put 2019 into perspective (below).  Note that the 'grey zones' hardly register until May.
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Stephan

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Re: Greenland 2019 Melt Season
« Reply #48 on: April 30, 2019, 08:58:11 PM »
...so until now the melt area 2019 in Greenland is nothing to write home about.

Tor Bejnar

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Re: Greenland 2019 Melt Season
« Reply #49 on: May 01, 2019, 01:39:24 AM »
2019 has more early melt than most years, and is among the half-dozen years with early melt.  A couple years, however, had much more significant melt events before May.  So perk up your ears, but don't write home yet!  :)
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