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Author Topic: Greenland 2020-21 SMB (Snowfall & Melting) Year  (Read 1147 times)

gerontocrat

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Greenland 2020-21 SMB (Snowfall & Melting) Year
« on: September 05, 2020, 12:30:00 PM »
I am starting this thread so these posts conform to the DMI Greenland Year September to August as in their website http://polarportal.dk/en/greenland/surface-conditions/.

Also,I will plonk GRACE-FO data on overall Greenland Ice Sheet Mass here (when I get it).

The Greenland 2019-20 melting Season thread is staying open, as there will be many year end reports coming out in the next few months.

Here are the daily & cumulative graphs for 4 September.
"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 2020-21 SMB (Snowfall & Melting) Year
« Reply #1 on: September 06, 2020, 12:12:07 PM »
Data from...
http://polarportal.dk/en/greenland/surface-conditions/
http://ensemblesrt3.dmi.dk/data/prudence/temp/PLA/PP_GSMB/

The new DMI year for SMB starts while the DMI keeps the old year for melt open. Too complicated for little me.

Data as at 5 Sep 2020.

Melt a respectable 7.4% of the surface area of Greenland.

Precipitation high(ish).
The result is a daily SMB gain of 2.2 GT.

Cumulative SMB gain for the year is 4.5 GT.

Melt may persist though reducing
A succession of lows bringing a mixture of rain and snow may well mean precipitation is high

SMB gains - maybe some large - in prospect.
_________________________________________________________________
Updates will be less frequent from now, depending on any  unusual SMB gains or lack of gains.
Click on images for full size view.
"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 2020-21 SMB (Snowfall & Melting) Year
« Reply #2 on: September 13, 2020, 10:57:21 AM »
Data from...
http://polarportal.dk/en/greenland/surface-conditions/
http://ensemblesrt3.dmi.dk/data/prudence/temp/PLA/PP_GSMB/


Data as at 12 Sep 2020.

Melt has reduced to almost zero.

Precipitation quite low this week.

Cumulative SMB gain for the year is 13.4 GT, a little bit below average.

There may be a final blip of melt mid-week.
A succession of lows bringing a mixture of rain and snow may well mean precipitation is high.

SMB gains - maybe some large - in prospect.

Updates will be less frequent from now, depending on any  unusual SMB gains or lack of gains.
_________________________________________________________________
Click on images for full size view.
"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 2020-21 SMB (Snowfall & Melting) Year
« Reply #3 on: September 16, 2020, 06:29:48 PM »
Data from...
http://polarportal.dk/en/greenland/surface-conditions/
http://ensemblesrt3.dmi.dk/data/prudence/temp/PLA/PP_GSMB/


Data as at 15 Sep 2020.

Melt did a small blip up to 1.15%.

Precipitation was low this week but on this day a big dump..

Cumulative SMB daily gain high at 4.4 GT, for the year 18.4 GT, a little bit below average.

There may be a final blip of melt today (Wednesday)
A succession of lows bringing a mixture of rain and snow may well mean precipitation is high.

SMB gains - maybe some large - in prospect.

Updates will be less frequent from now, depending on any  unusual SMB gains or lack of gains.
_________________________________________________________________
Click on images for full size view.
"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 2020-21 SMB (Snowfall & Melting) Year
« Reply #4 on: September 18, 2020, 11:08:53 AM »
Data from...
http://polarportal.dk/en/greenland/surface-conditions/
http://ensemblesrt3.dmi.dk/data/prudence/temp/PLA/PP_GSMB/

Data as at 17 Sep 2020.

Melt did a small blip up to 2.3% on the 16th

Precipitation high in the last 2 days..

Cumulative SMB daily gain high at 5 GT on the 16th, 2Gt on the 17th, for the year 25.4 GT, almost up to average.

There may be some final blips of melt this month, but very small.
A succession of lows bringing a mixture of rain and snow may well mean precipitation is high.

SMB gains - maybe some large - in prospect.

Updates will be less frequent from now, depending on any  unusual SMB gains or lack of gains.
_________________________________________________________________
Click on images for full size.
"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 2020-21 SMB (Snowfall & Melting) Year
« Reply #5 on: October 03, 2020, 01:03:04 PM »
Data from...
http://polarportal.dk/en/greenland/surface-conditions/
http://ensemblesrt3.dmi.dk/data/prudence/temp/PLA/PP_GSMB/

September 2020 to August 2021 Year


Data as at 2 October 2020.

Melt has petered out to almost zero
Precipitation variable

Cumulative SMB gain 53 GT, a bit below average.

There may be some final blips of melt this month. but very small.

Updates will be less frequent from now, depending on any  unusual SMB gains or lack of gains.
As it is somewhat boring at the moment, a gif is attached of melt and smb change to date.
_________________________________________________________________
Click on images for full size.
"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 2020-21 SMB (Snowfall & Melting) Year
« Reply #6 on: October 16, 2020, 03:51:58 PM »
Data from...
http://polarportal.dk/en/greenland/surface-conditions/
http://ensemblesrt3.dmi.dk/data/prudence/temp/PLA/PP_GSMB/


data to 15 October

Melt has almost stopped. So instead here is a gif of daily SMB gain and cumulative SMB anomaly plus SMB and melt graphs.

Pretty much average snowfall so far.

"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)