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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 ?

"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 #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.
"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 #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).
"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 #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!"
"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 #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
"Damn, I wanted to see what happened next" (Epitaph)