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Neven

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Re: Glossary ... for newbies and others
« Reply #50 on: July 12, 2016, 11:14:19 AM »
Thanks, Jim. Added those to the top post.
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slow wing

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Re: Glossary ... for newbies and others
« Reply #51 on: July 14, 2016, 12:27:38 PM »
Weather forecasting models

GFS - Global Forecast System

ECMWF (AKA Euro) - European Centre for Medium-Range Weather Forecasts

UKMO - United Kingdom Meteorological Office

NAVGEM -  Navy Global Environmental Model

See the sidebar at MeteoCiel for a few more!

Thanks. Tropical Tidbits,
http://www.tropicaltidbits.com/analysis/models/
also has
CMC, which looks like a Canadian run of the GEM model?
JMA = a Japanese model


slow wing

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Re: Glossary ... for newbies and others
« Reply #52 on: July 14, 2016, 12:30:46 PM »
Their ensembles of the models are not obvious to me from their acronyms:
EPS
GEFS
GEPS

Anyone?

JayW

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Re: Glossary ... for newbies and others
« Reply #53 on: July 14, 2016, 12:54:07 PM »
Their ensembles of the models are not obvious to me from their acronyms:
EPS
GEFS
GEPS

Anyone?

EPS is ECMWF ensembles
GEFS is GFS ensembles
GEPS is GGEM ensembles
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JayW

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Re: Glossary ... for newbies and others
« Reply #54 on: July 14, 2016, 12:56:04 PM »
Their ensembles of the models are not obvious to me from their acronyms:
EPS
GEFS
GEPS

Anyone?

EPS is ECMWF ensembles commonly EURO ENS
GEFS is GFS ensembles
GEPS is GGEM ensembles (Canadian)
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Cate

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Re: Glossary ... for newbies and others
« Reply #55 on: July 18, 2016, 11:50:20 PM »
Ice Glossary from the Canadian Ice Service of Environment and Climate Change Canada. 

Concise but pretty extensive. My apologies if it's been posted already.

http://www.ec.gc.ca/glaces-ice/default.asp?lang=En&n=501D72C1-1

Neven

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Re: Glossary ... for newbies and others
« Reply #56 on: August 30, 2016, 09:00:53 AM »
Neven,

I do not know which thread would be appropriate for this question.


Sourabh, ask perhaps in the <a href="http://forum.arctic-sea-ice.net/index.php/topic,143.msg87274.html#msg87274">Stupid Questions</a> thread, even though this is not a stupid question. Here is the wrong place.

You can also use the Search function, top of the page, below the banner.
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Flocke

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Re: Glossary ... for newbies and others
« Reply #57 on: September 07, 2016, 07:18:45 AM »
RCP 8.5 Representative Concentration Pathways, predection of greenhouse gas concentrations
AR5 IPCC Fifth Assessment report
ECS equilibrum climate sensitivity

(https://forum.arctic-sea-ice.net/index.php/topic,1493.msg89152.html#msg89152 and following)

logicmanPatrick

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Re: Glossary ... for newbies and others
« Reply #58 on: December 08, 2016, 07:44:04 PM »
THC  Thermohaline Circulation

NOW  North Water Polynya

NEW   Northeast Water Polynya

Excellent article -
http://www.issibern.ch/teams/Polynya/
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Neven

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Re: Glossary ... for newbies and others
« Reply #59 on: December 08, 2016, 10:39:39 PM »
Added. Thanks, Patrick.
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hendric

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Re: Glossary ... for newbies and others
« Reply #60 on: January 02, 2017, 09:19:32 AM »
FDD = Freezing Degree Days.  Sum of temps in C below freezing. Provides integrated intensity of cold.
TDD = Thawing Degree Days.  Sum of temps in C above freezing. Provides integrated intensity of warmth.

I found some contradictions on the details, with some sites saying the freezing point of sea water, and others saying above 0*C (maybe useful for rivers or lakes?). I couldn't find anything on the specifics of how the number for a day is calculated, but some sites implied that it was a continuous integration of all temps vs some kind of average.

https://nsidc.org/cryosphere/seaice/processes/thermodynamic_growth.html


 

Neven

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Re: Glossary ... for newbies and others
« Reply #61 on: January 02, 2017, 11:23:29 AM »
Thanks and welcome to the forum, hendric. I've added FDD and TDD to the list.
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logicmanPatrick

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Re: Glossary ... for newbies and others
« Reply #62 on: January 19, 2017, 10:11:10 PM »
MIZ
Marginal Ice Zone

I didn't find that in a search of the ASIF, so here's a useful link to explain it:

http://www.apl.washington.edu/project/project.php?id=miz
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Neven

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Re: Glossary ... for newbies and others
« Reply #63 on: January 19, 2017, 11:33:11 PM »
Thanks, Patrick, added now.
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Ice Shieldz

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Re: Glossary ... for newbies and others
« Reply #64 on: January 20, 2017, 12:29:14 AM »
WACC - Warm Arctic, Cold Continents (also WACCy for adverb/adjective usage)

"The emergence of rapid Arctic warming in recent decades has coincided with unusually cold winters over Northern Hemisphere continents. It has been speculated that this “Warm Arctic, Cold Continents” trend pattern is due to sea ice loss."

Source:  https://www.esrl.noaa.gov/psd/people/lantao.sun/publications/2016_SPH_GRL.pdf

Neven

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Re: Glossary ... for newbies and others
« Reply #65 on: January 20, 2017, 08:43:29 AM »
Added, thanks.
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logicmanPatrick

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Re: Glossary ... for newbies and others
« Reply #66 on: January 26, 2017, 12:46:43 AM »
NWP North West Passage
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Tor Bejnar

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Re: Glossary ... for newbies and others
« Reply #67 on: January 29, 2017, 04:05:20 PM »
"FJI" is repeatedly used by at least 3 posters (for example: today's "Just a followup from yesterday on the poleward region poleward of Barents-FJl."  by A-Team).  Pmt111500 suggested it means Franz Josef Islands when I asked.  There is some support for this when I do an internet search (~5 results for "FJI" "Franz Josef Islands" plus "FJI" "Franz Joseph Islands").  Should FJI be added to the glossary?  Or should folks be asked to use the standard "FJL" [Franz Josef(ph) Land](~13,000 internet search hits)?
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magnamentis

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Re: Glossary ... for newbies and others
« Reply #68 on: January 29, 2017, 04:22:50 PM »
"FJI" is repeatedly used by at least 3 posters (for example: today's "Just a followup from yesterday on the poleward region poleward of Barents-FJl."  by A-Team).  Pmt111500 suggested it means Franz Josef Islands when I asked.  There is some support for this when I do an internet search (~5 results for "FJI" "Franz Josef Islands" plus "FJI" "Franz Joseph Islands").  Should FJI be added to the glossary?  Or should folks be asked to use the standard "FJL" [Franz Josef(ph) Land](~13,000 internet search hits)?

there is the old official name that is "Franz Josef Land" after the emperor "Franz Josef von Habsburg" (K&K Monarchy)

and

the new russian offical name that is: Zemlya Frantsa-Iosifa or Земля́ Фра́нца-Ио́сифа respectively

all other names are translations and i'm not sure if every abbreviation should be added, that would be confusing IMO

https://en.wikipedia.org/wiki/Franz_Josef_Land
« Last Edit: January 29, 2017, 04:28:34 PM by magnamentis »
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Neven

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Re: Glossary ... for newbies and others
« Reply #69 on: January 29, 2017, 06:07:49 PM »
NWP North West Passage

Thanks, added now, as well as NSR (Northern Sea Route). Funny we didn't have those on the list yet.  :)

And yes, it's Franz Josef Land, period.
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A-Team

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Re: Glossary ... for newbies and others
« Reply #70 on: January 30, 2017, 05:21:09 PM »
Sounds good. I will use FJL in the future since that is what Wikipedia has settled on. Also, that is found primarily in the very oldest maps. Note however a google scholar search for "franz josef islands" has 4 pages of journal matches, so they are not on board.

Tor Bejnar

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Re: Glossary ... for newbies and others
« Reply #71 on: January 30, 2017, 08:40:53 PM »
I see the 4 pages of google scholar pages when searching for "Franz Josef Islands" (2 more pages for "Franz Joseph Islands"), but only 3 articles (one questionable) use "FJI" to represent these islands.

"Franz Josef Land" has 99 google scholar pages and "Franz Joseph Land" has 100 additional google scholar pages.  "FJL" is used in about 370 of these articles.

I guess there are no crumbs here for the <1%.   :D
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Neven

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Re: Glossary ... for newbies and others
« Reply #72 on: January 30, 2017, 11:22:25 PM »
I live in Austria. I have to call it Franz-Josef-Land. They discovered it. 8) ;)
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Pmt111500

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Re: Glossary ... for newbies and others
« Reply #73 on: January 31, 2017, 05:46:47 AM »
To spell it out, in my post an hour or so back I used the expletive profanity and foul language acronym (in this scientific context at least) that should not be added to the list. (GDI! - God Did It!) GDI - God Damn It is the more usual explanation.
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logicmanPatrick

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Re: Glossary ... for newbies and others
« Reply #74 on: February 01, 2017, 04:25:23 AM »
For the sake of leaving no stone unturned: archive.org lists one false positive for texts containing  'Franz Josef Islands', so that name seemingly has no historical authenticity.
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RikW

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Re: Glossary ... for newbies and others
« Reply #75 on: February 01, 2017, 08:50:23 AM »
Is it an idea to add the difference between Extent and Area in the list?

If I understand correctly Extent is based on a grid where every tile in that grid that has 15% or more ice cover is counted and Area only the ice cover is counted?

Neven

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Re: Glossary ... for newbies and others
« Reply #76 on: February 01, 2017, 01:54:05 PM »
Is it an idea to add the difference between Extent and Area in the list?

Nah, it's just a glossary.

If I understand correctly Extent is based on a grid where every tile in that grid that has 15% or more ice cover is counted and Area only the ice cover is counted?

Yes, everything above 15% in a grid is counted as 100% (and below as 0%). For area it's the ice cover as is, but it is considered 0% below 15% as well.

Extent was created to reduce the influence of melt ponds (which get counted as open water for area).
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Ice Shieldz

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Re: Glossary ... for newbies and others
« Reply #77 on: February 11, 2017, 01:57:34 AM »
SFW - Stratospheric Final Warming

The final warming of the stratosphere that occurs in early to late spring. The SFW is the final transition of the zonal winds from wintertime westerlies to summertime easterlies as solar heating of the high latitude stratosphere increases.

Sources:
http://onlinelibrary.wiley.com/doi/10.1029/2008GL036624/full
http://rxb.eas.gatech.edu/papers/black_mcdaniel_2006b.pdf
http://www.arl.noaa.gov/documents/JournalPDFs/Butler_et_al_2015_bams-d-13-00173.1.pdf

Neven

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Re: Glossary ... for newbies and others
« Reply #78 on: February 11, 2017, 09:47:55 AM »
Added, thanks.
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martalunde68

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Re: Glossary ... for newbies and others
« Reply #79 on: February 19, 2017, 05:48:31 PM »
A couple of pollution terms:
HFO – heavy fuel oil
LFO – light fuel oil
(So much fuss about them lately! Read this https://thebarentsobserver.com/en/arctic/2017/02/eu-wants-ban-heavy-fuel-arctic

Neven

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Re: Glossary ... for newbies and others
« Reply #80 on: February 19, 2017, 09:55:37 PM »
Thanks and welcome, martalunde68. I've added the terms and released your profile.
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shmengie

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Re: Glossary ... for newbies and others
« Reply #81 on: February 24, 2017, 05:30:57 PM »
https://earth.nullschool.net

Is an awesome viewer of weather & winds around the Earth

Best viewed via:  Google's chrome web browser -- due to javascript optimization.

(this is why; I'm creating this off topic post here)
Key codes:
i-reduce hPa (higher view of atmosphere)
I-top (10 hPa) view
m-increase hPa (lower view of atmosphere)
M-bottom (surface) view
j-3 hours earlier
J-1 day earlier
k-3 hours later
K-1 day later
a-rotate earth clockwise 1°
A-rotate earth clockwise 5°
s-rotate earth counter clockwise 1°
S-rotate earth counter clockwise 5°
d-zoom in 1%
D-zoom in 5%
x-zoom out 1%
X-zoom out 5%
z-tilt earth up 1°
Z-tilt earth up 5°
w-tilt earth down 1°
W-tilt earth down 5°
z-tilt earth up 1°
g-show/hide grid
e-show/hide earth menu
p-pause/play

Nice to know... IMO :-)
« Last Edit: February 25, 2017, 01:02:44 AM by shmengie »
Professor Trump, who'd thought it was that complicated?

slow wing

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Re: Glossary ... for newbies and others
« Reply #82 on: February 24, 2017, 09:43:09 PM »
Thanks shmengie! I didn't know that and it really works!

Neven

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Re: Glossary ... for newbies and others
« Reply #83 on: March 11, 2017, 09:26:53 AM »
From Global Cryosphere Watch:

[2017-03-10] 1000+ terms added to the cryosphere glossary!. We"ve just added over 1000 entries to the cryosphere glossary! There are now 4141 entries from 26 sources; over 2200 are unique. http://globalcryospherewatch.org/reference/glossary.php.
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Sarat

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Re: Glossary ... for newbies and others
« Reply #84 on: April 18, 2017, 04:24:02 PM »
Hi can can anyone define "torching", from what i can tell its when ice changes albedo and starts looking darker on filtered satellite images?  What are the implications of this for the melt?

oren

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Re: Glossary ... for newbies and others
« Reply #85 on: April 18, 2017, 08:42:36 PM »
Hi can can anyone define "torching", from what i can tell its when ice changes albedo and starts looking darker on filtered satellite images?  What are the implications of this for the melt?
I will try though I'm no expert:
Torching - slang for when a significant amount of heat, typically anomalous temps and/or clear sunny sky, is applied to the ice. Terminology to keep the spirits going as we watch the melting season.
"Torching" as Wipneus uses it in his AMSR2 thread - when the ice loses 100% concentration over large areas of the AMSR2 animation. Remember it's a radar "image" so it's not albedo and actual darkening - but possibly concentration drops due to surface wetness, actual meltwater or even rain, or cloud interference. "Torching" is not necessarily the result of actual torching. The implications are that the ice is not in a perfect condition, and might melt sooner than 100% concentration ice.

Sarat

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Re: Glossary ... for newbies and others
« Reply #86 on: April 18, 2017, 10:56:11 PM »
Thank you Oren!

Tor Bejnar

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Re: Glossary ... for newbies and others
« Reply #87 on: May 14, 2017, 05:12:08 AM »
Should "SSTA" be in the page 1 glossary?  SSTA = Sea Surface Temperature Anomalies in the 2017 ENSO thread. It was just used (undefined) in the 2017 Melting Season thread.
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Neven

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Re: Glossary ... for newbies and others
« Reply #88 on: May 14, 2017, 10:28:50 AM »
Should "SSTA" be in the page 1 glossary?  SSTA = Sea Surface Temperature Anomalies in the 2017 ENSO thread. It was just used (undefined) in the 2017 Melting Season thread.

Yes! As well as SST itself, SAT and SLP. I can't believe those weren't in there yet. I've added them all, including SSTa (I like it better with a small 'a' at the end), and SIV and SIT as well.

Thanks, Tor.
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Hyperion

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Re: Glossary ... for newbies and others
« Reply #89 on: May 14, 2017, 08:50:58 PM »
For more terms you can refer to NSIDC's Glossary. Or peruse the Global Croysphere ???
::)
The Titan Hyperion was the first to understand, by diligent attention and observation, the movement of both the sun and the moon and the other stars, and the seasons as well, in that they are caused by these bodies, and to make these facts known to others; — Diodorus Siculus (5.67.1)

Jontenoy

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Re: Glossary ... for newbies and others
« Reply #90 on: July 14, 2017, 09:56:02 AM »
Can someone explain '  GARLIC PRESS '

Andreas T

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Re: Glossary ... for newbies and others
« Reply #91 on: July 14, 2017, 10:48:03 AM »
garlic press is another casual term which refers to the Canadian Arctic Archipelago (CAA) and the fact that when ice in its passages has become mobile in August there is movement of ice which has compacted against the islands into those passages and from those passages into the Parry channel with its connection out into Baffin bay.
The narrowness of the passages into Parry channel (red arrows) compared to those from the open arctic ocean into the CAA shows how obstructed this flow is. Because of that the flow happens in stages. Ice which moves into the larger passages in late August freezes in in early October. In the following year it will partly melt, partly make its way into the Parry channel. If it survives there until freeze up, it may make it much reduced by melt into Baffin bay in the following year.
What matters of course is not how much ice arrives in Baffin bay but how much ice moves out of the Central Arctic Basin by this route.
I have not seen any attempt to quantify this but is claimed at times (including quite early in the melt season) by various people (I just picked the first I found)

The image is from 30. Aug 2015 https://go.nasa.gov/2ugn3xC just to give an example of a clear view

I think the opening of the CAA may be more important than it initially appears to be. It's kind of like opening a pressure relief valve of sorts. It seems to me, with my limited experience, to change the dynamics within the CAB.
                                                                                                                             
pauldry600
The Canadian Arpegio (or however you spell it) is notoriously difficult to break down so it may not all go but this will surely test it to the limit
It don't have to all go, as in melt. If enough gets weakened and broken up, the rest will eventually just flush out. Remember that at the end of last melt season, smaller floes were moving through until the end and got frozen together. I don't suspect the bonds between these to be any stronger than elsewhere. Also, wave activity has been infiltrating some of the channels, despite the dampening effect of the ice.

Pmt111500

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Re: Glossary ... for newbies and others
« Reply #92 on: July 14, 2017, 10:53:03 AM »
Can someone explain '  GARLIC PRESS '
Not the correct place for the question, but "garlic press" of the canadian arctic archipelago is just an euphemism for the structure  and currents of it. Sufficiently weak ice north of the archipelago gets broken by the combined effect of dominant currents from north, the assisting winds and the narrow channels in there providing grinding effect. The resulting mush of rather thick pieces of ice gets spread along the center of Northwest passage, and is still a hazard for weaker ships travelling there... Much easirr to say "garlic press" ;-).
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Jontenoy

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Re: Glossary ... for newbies and others
« Reply #93 on: July 14, 2017, 02:52:09 PM »
Thanks to you both

Tor Bejnar

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Re: Glossary ... for newbies and others
« Reply #94 on: July 18, 2017, 04:06:56 PM »
GAC - Great Arctic Cyclone and other "xAC" terms don't appear to be found in this Glossary.
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Neven

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Re: Glossary ... for newbies and others
« Reply #95 on: July 18, 2017, 04:17:44 PM »
Well, I'll be. Don't know how we managed to forget about those. Thanks, Tor. GAC and PAC added now.
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