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Author Topic: Arctic Ocean salinity, temperature and waves  (Read 35743 times)

johnm33

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Re: Arctic Ocean salinity, temperature and waves
« Reply #200 on: March 24, 2019, 01:17:57 PM »
Looking at 156/7/8 animations some of the things I'm suggesting already seem to be there, just couldn't see them til' I looked for them. What I was particularly interested in was the increasing Atlantification of the shelf waters in Laptev through ESS, it appears the saline Atlantic waters are stopping the Siberian freshwater from entering the Arctic in it's accustomed way and that it is only entering much further east, where the inflow from Bering is being forced west and mixes with it. Thus the 'ridge' of thick ice being formed further east one could say at the confluence of the gyre and the incoming Atlantic stream. That may be responsible for the increasing depth of the 'Pacific' layer.
 The more or less random pulses of Atlantic waters coming through Fram on their way to Nares is there to be seen too, as is the flow which is likely generating the gyres which are dropping into Beaufort and Atlantifying it's basal waters.
I don't know if the Davis Strait array is functioning or if/when the data is accessible, I guess an alternative would be a record of expected and actual tides from somewhere on Baffin Island to give some clue about how much fresh-water is escaping. Higher low tides = more imho.
I'm beginning to think I must have upset a Chinaman, interesting times.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #201 on: March 24, 2019, 06:49:06 PM »
posting here for smaller readership as it may be rubbish. Worldview, terra/modis nares, mar23-24.
Can I see waves? click on image to run.
« Last Edit: March 24, 2019, 07:30:59 PM by uniquorn »

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #202 on: March 24, 2019, 10:48:14 PM »
What I was particularly interested in was the increasing Atlantification of the shelf waters in Laptev through ESS<snippage>
I think I see evidence of the Atlantic in the Laptev and maybe that is not helping the thin wind driven ice north of the Anzhu islands. All should become clearer over the next few weeks.
Worldview terra/modis ess/laptev mar16-24

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #203 on: March 26, 2019, 02:26:04 PM »
I couldn't find any recent data for the Davis Strait array. Does anyone reading have access?

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #204 on: March 27, 2019, 12:56:07 PM »
Comparison of whoi itp89 and 110 with drift speed and buoy temperature. Their drifts cover a similar path east of the Mclure Strait and the profiles show the tenperature difference at 50-100m between 2016 and 2019 (different months though, I think). edit: note salinity below 400m
itp89 is still stalwartly reporting buoy temperature despite spending 2 winters iced up in the Mclure strait then Viscount Melville Sound. The profiler is was only changing depth a few metres per day when it stopped profiling in 2016, similar to itp107 but perhaps it will drift back into the main channel when melt starts. Buoy temperature is a handy 'on the ground' reference. http://www.whoi.edu/page.do?pid=148096

worldview terra modis mar26. x marks the spot, rough location of itp89

edit: On another note itp103,4 and 5 all still heading north east against the annual ice drift
edit2: all profiling from itp89 stopped day250 2016
« Last Edit: March 27, 2019, 09:57:29 PM by uniquorn »

johnm33

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Re: Arctic Ocean salinity, temperature and waves
« Reply #205 on: March 28, 2019, 10:54:15 AM »
Had to check the depth in McLure it barely goes deeper than 400m, it's interesting that the outflow seems to be from the upper layers. http://elevation.maplogs.com/poi/sachs_harbour_nt_canada.437131.html best full screen and zoom out a little.
OT but I'd never really noticed how smooth some of the otherwise rugged looking coasts were in the CAA, makes me think very soft rocks or more likely yedoma. The steepness of the drops offshore are remarkable too.
added, for elevation click on the point of interest, +doesn't work for me now either.
« Last Edit: April 02, 2019, 04:42:41 PM by johnm33 »

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #206 on: April 02, 2019, 03:14:37 PM »
Elevations didn't work for me from maplogs.com but it was interesting to see the coastline without the ice.
Decided that I'd ignored sea surface height for long enough. Here is mercator's model from jan2018-mar2019.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #207 on: April 04, 2019, 10:37:16 PM »
mercator 34m salinity overlaid onto ascat, jan2018-apr3(2019) as a rough guide to arctic atlantipacification.
The stutters are due to missing ascat data, nearest days have been duplicated. The mercator scale is not really relevant as the overlay changes the hues but red is saltier than blue. Using 34m salinity here as 0m tends to change rapidly with ice melt and hides the underlying currents.
Ascat swaths leave rotating data gaps at the periphery, summer and seas are a swirl of 'weather' so once again, hazard warning.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #208 on: April 06, 2019, 01:48:18 PM »
It seems that Pacification is really happening right now, in front of our eyes.


I think we know that Nino events can , via Kelvin waves, push warm surface waters up the U.S. coast and into the basin via Bering?

Now we are in a low grade nino event but no big Kelvin waves have really had impact but we should remember the state of the Interdecadal Pacific oscillation since 2014?

Since 2014 this natural forcing has been in its positive state. This means that, over its area of influence , warmed surface waters are present ( instead of being buried in the upper ocean?) .Will this mean twenty odd years of ever warmer surface waters pushing in from the Pacific side of the basin?

It's early days but maybe we have left it long enough to expect more melt over the Pacific side as Pacific ocean currents begin to deliver these warmed surface waters ?
Not familiar with PDO. I hope Gray-Wolf doesn't mind the repost here for reference.
From NOAA https://www.ncdc.noaa.gov/teleconnections/pdo/
Quote
The Pacific Decadal Oscillation (PDO) is often described as a long-lived El Niño-like pattern of Pacific climate variability (Zhang et al. 1997). As seen with the better-known El Niño/Southern Oscillation (ENSO), extremes in the PDO pattern are marked by widespread variations in the Pacific Basin and the North American climate. In parallel with the ENSO phenomenon, the extreme phases of the PDO have been classified as being either warm or cool, as defined by ocean temperature anomalies in the northeast and tropical Pacific Ocean. When SSTs are anomalously cool in the interior North Pacific and warm along the Pacific Coast, and when sea level pressures are below average over the North Pacific, the PDO has a positive value. When the climate anomaly patterns are reversed, with warm SST anomalies in the interior and cool SST anomalies along the North American coast, or above average sea level pressures over the North Pacific, the PDO has a negative value (Courtesy of Mantua, 1999

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #209 on: April 08, 2019, 12:39:23 AM »
melt pond testing. Clouds are there...

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #210 on: April 09, 2019, 07:11:05 PM »
Following up on this post:
Crackification on the Atlantic side continues.
ascat resolution doesn't really pick up the fracture in the thicker ice but it shows clearly in the darker area north of laptev on day91 with more fractures further south in the following days. The wind across the laptev changed 3 days ago so probably not related. The southerly fractures fit well with the bathymetry though.
ascat day85-98 forward and back.
ascat day98 with NOAA bathymetry map overlaid.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #211 on: April 10, 2019, 12:01:23 AM »
update on polarportal.dk ice surface temperature, feb1-apr8

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #212 on: April 10, 2019, 01:16:59 AM »
cs2smos merged sit, mar-apr7 for reference (not fixed scale, will look at that. Limited panoply skills)
« Last Edit: April 10, 2019, 01:25:03 AM by uniquorn »

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #213 on: April 11, 2019, 11:56:58 AM »
update on the laptev lomonosov fractures
ascat day89-100, forward and back.
worldview terra modis, high contrast, apr7-11, ascat apr7-10 inset.
« Last Edit: April 11, 2019, 12:46:06 PM by uniquorn »

be cause

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Re: Arctic Ocean salinity, temperature and waves
« Reply #214 on: April 11, 2019, 12:50:06 PM »
we could do with a plug for the .. but Ill not go there .. :) .. b.c.
2007 + 5 = 2012 + 4 = 2016 + 3 = 2019 ...

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #215 on: April 14, 2019, 11:18:18 PM »
A comparison of mercator(model) 318m salinity, feb1-apr13, 2018 and 2019. The reason this thread was started.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #216 on: April 15, 2019, 09:43:24 PM »
reposting comparison of bering to laptev mercator(model) 0m salinity, feb1-apr13, 2018 and 2019 for reference. Note high salinity in southern laptev.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #217 on: April 16, 2019, 11:37:37 PM »
The good people at the woods hole oceanographic institution are once again posting active itp buoy data. This animation only showing those with full depth profiles.
https://www.whoi.edu/page.do?pid=163196

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #218 on: April 19, 2019, 07:56:59 PM »
Following up on the laptev lomonosov fractures here is ascat and piomas apr1-15(ish)

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #219 on: April 22, 2019, 03:25:41 PM »
50 days of ascat (to apr20) with NOAA bathymetry overlaid at 22% transparency.
Looking mostly to see how the laptev fractures fit in to the bigger picture. Also interesting is nares/lincoln,  chukchi plateau and east greenland albeit at low resolution.
Never noticed before that it's shallower where the Oddenham ridge once formed
« Last Edit: April 22, 2019, 03:37:59 PM by uniquorn »

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #220 on: April 22, 2019, 09:47:54 PM »
mercator-salinity-0m-34m-92m-318m--arctic-jan1-apr21.
Had this set up for nares, posting full arctic for ref..

johnm33

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Re: Arctic Ocean salinity, temperature and waves
« Reply #221 on: April 30, 2019, 11:00:51 AM »
Looking at the above animation and, https://www7320.nrlssc.navy.mil/GLBhycomcice1-12/navo/arcticsss_nowcast_anim30d.gif zoomed fully in on the CAA. It seems that Pac. waters are penetrating along the coast even into Amundsen, and beyond where they are stirring up the fresher deep water, and I assume slowly replacing it. The current flowing through to Lancaster sound via Franklin strait suggests it still has the signature of Pac. energy and has been remarkably persistent, coincident with the Beaufort high. From the north it appears Atl. waters have penetrated the garlic press and are 'colonising' Mclure-Lancaster NWP and mixing there with the Pac. waters.
 If this persists the CAA will melt out and there's going to be nothing to inhibit the freshwater lens of Beaufort passing through to Baffin/Labrador, which in turn suggests much greater penetration of Atl.+Pac. waters into the Arctic.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #222 on: April 30, 2019, 11:02:52 PM »
It's a shame hycom don't have a 34m model to compare. Agree with the interpretation but where to look for verification? I suppose Nares opening early is one. Amundsen has melted much further east this year....

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #223 on: May 03, 2019, 10:06:07 PM »
Worldview terra modis amundsen apr1-may2
uni-hamburg amsr2-uhh mar19-may2 2016 overlay

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #224 on: May 04, 2019, 09:32:37 PM »
nasa nsidc daac ease-grid sea ice age v4.1 for 2018 (cropped to >1yr ice to reduce file size)
OT but here for ref
« Last Edit: May 04, 2019, 09:53:22 PM by uniquorn »

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #225 on: May 07, 2019, 01:45:30 PM »
update on amundsen gulf, worldview aqua modis (clearer) may7, heavy contrast. This area only frozen fast since apr1.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #226 on: May 08, 2019, 10:08:52 PM »
whoi itp110 for Bruce Steele. The warm layer getting thicker again as 110 drifts south west.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #227 on: May 11, 2019, 10:33:13 PM »
Possibly a similar surge last year. Looks different though.
Worldview aqua modis, north greenland may11, 2018 and 2019. This year coincides with an event along the CAA coast and, of course, the Nares is open. Less resistance. Might even be sucked. Sure there's a better term than that.
« Last Edit: May 11, 2019, 10:41:34 PM by uniquorn »

johnm33

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Re: Arctic Ocean salinity, temperature and waves
« Reply #228 on: May 12, 2019, 12:00:21 AM »
Wondering if the more powerful flow through Nares leads to a more powerful backwash as it temporarily stalls/reverses? again and again?

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #229 on: May 12, 2019, 08:00:39 PM »
Could be. Maybe b_l will take a look at the Nares entrance and see what comes up.

Reflection of weather event entering chukchi on day119 causes CAA lift off?
ascat day114-131 5days/sec

b_lumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #230 on: May 12, 2019, 08:16:34 PM »
Wondering if the more powerful flow through Nares leads to a more powerful backwash as it temporarily stalls/reverses? again and again?

John, how do you mean backwash? What would i have to look for exactly? The amplitude of tides in the horizontal direction?

johnm33

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Re: Arctic Ocean salinity, temperature and waves
« Reply #231 on: May 13, 2019, 11:51:59 AM »
backwash If a powerful current is flowing and it gets stalled by a tidal surge, for instance rushing up from Kane then I suspect the flow of the current stalls and pressure waves build up and are expressed by upward and sideways movement from the current generating various eddies in the process, then the current resumes, rinse repeat, - - I think?

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #232 on: May 13, 2019, 10:23:26 PM »
Cross posting mercator salinity 0m and 34m, apr4-may10 for ref.
Worldview aqua modis apr6-may13. Lincoln sea events well documented on the Nares thread.
uni-hamburg amsr2-uhh shows the CAA lift off more clearly than ascat above. (click to run)
Widening gyre driven fractures till apr29. Wind changes to southerly on may1 causing small lift off.. Anticyclone with northerlies over central CAA till may5 closing it. By may7 southerlies across central CAA cause larger lift off and by may10 easterlies from Fram strait meet with the southerlies to cause the humped fractures over north of ellesmere. nth greenland fractures not helped by the incoming atlantic current.
« Last Edit: May 13, 2019, 11:39:05 PM by uniquorn »

Stephan

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Re: Arctic Ocean salinity, temperature and waves
« Reply #233 on: May 13, 2019, 10:47:58 PM »
Thanks a lot for these animations.
Doesn't look too good for the ice in the whole region from SE Beaufort up to the Fram Strait entry...

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #234 on: May 14, 2019, 10:36:05 AM »
Despite the wind based description above, this still looks more like an ocean driven event to me.
noaa bathymetry overlaid onto heavily contrasted uni-hamburg amsr2-uhh may6-13 foward and back (hasty attempt-gotta go gardening ;) )

johnm33

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Re: Arctic Ocean salinity, temperature and waves
« Reply #235 on: May 15, 2019, 10:44:25 PM »
Looking again at the break-up north of Greenland, I noticed on hycom th. an almost simultaneous series of internal waves[?] breaking though in Beaufort near Amundsen, then looked at nullschool   and as well as the low in the north Atlantic helping water pass north of Iceland-Faroes there was a distinct drop in pressure just off the coast in Beaufort [10-11]which probably assisted the Atlantic waters inflow and led to the breakaway of the thick ice along the CAA coastline. I can't think of any occasion short of the last few days of the melt-season when that area has looked so vulnerable.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #236 on: May 15, 2019, 11:01:57 PM »
Yes. Still looking at it. Here's ascat overlaid onto unihamburg amsr2uhh(heavy contrast), apr24-may14. I still think it's the push from the pacific into the chukchi that causes it. There's a compression from the atmospheric weather into the caa then upwelling or disturbance when the waves hit along the coast. Then reflection out into beaufort.
Will try to look more at the hycom ani tomorrow. It's a better illustration of the movement.
edit:not related, but interesting how the fractures north of ellef ringnes match up with the scatter difference.
« Last Edit: May 15, 2019, 11:45:48 PM by uniquorn »

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #237 on: May 16, 2019, 12:25:16 AM »
High pressure and clockwise rotation of the ice pack induce Eckman upwelling in the near shore waters of Alaska and Canada. The Coriolis effect deflects the ice towards the center of the high and it is replaced by water from below. If high pressure persists it slowly pumps up warm water from the Atlantic layer along the continental shelf.

At the moment little reason to suppose sea ice loss will accelerate, which makes the general disintegration of the sea ice all along the Arctic ocean edge from the Beaufort to the Greenland Sea all a bit of a mystery to me.

Persistent high pressure in May June and July is not good for Arctic sea ice, especially in the Beaufort sea.
perhaps because the caa coast is the one place where the ice isn't really rotating

FishOutofWater

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Re: Arctic Ocean salinity, temperature and waves
« Reply #238 on: May 16, 2019, 06:34:52 AM »
The eastern CAA has just barely started moving. I was thinking about the Mackenzie river delta region when I wrote that. It has both upwelling and river water.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #239 on: May 16, 2019, 10:07:16 AM »
Thanks for the clarification FOoW. I didn't notice the green text was a quote.

b_lumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #240 on: May 16, 2019, 10:37:51 AM »
Someone's not reading Gerontocrats reports carefully!  ::)

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #241 on: May 16, 2019, 11:59:50 AM »
True, I mostly look at the numbers but there was also this... https://forum.arctic-sea-ice.net/index.php/topic,2649.msg199429.html#msg199429

It would be easier to understand if the caa coastal ice was rotating but in the last 9 days it has hardly moved westward. Just north and south. The gyre driven ice slipping by the 'thick ice' north of caa.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #242 on: May 20, 2019, 10:39:06 PM »
whoi itp110 salinity looks unusual from day105-120, (apr14-19, profile 413-443) https://www.whoi.edu/page.do?pid=163197
day109 data 12m-90m below

%ITP 110, profile 422: year day longitude(E+) latitude(N+) ndepths
2019  109.25141  -134.3791  74.1888  375 0
%year day pressure(dbar) temperature(C) salinity oxygen(umol/kg)
2019  109.25177   12   -1.5098   28.5838  184.7593
2019  109.25183   14   -1.5091   28.4931  195.4595
2019  109.25191   16   -1.5086   28.4130  205.3583
2019  109.25201   18   -1.5081   28.3412  212.2450
2019  109.25210   20   -1.5078   28.2903  216.1363
2019  109.25219   22   -1.5075   28.2615  217.7087
2019  109.25227   24   -1.5072   28.2385  217.6469
2019  109.25235   26   -1.5069   28.2252  216.4158
2019  109.25244   28   -1.5063   28.2195  214.5133
2019  109.25252   30   -1.5056   28.2078  211.7976
2019  109.25260   32   -1.5052   28.2038  209.3528
2019  109.25269   34   -1.5047   28.1997  206.8115
2019  109.25277   36   -1.5043   28.1916  204.1676
2019  109.25285   38   -1.5041   28.1701  202.3795
2019  109.25294   40   -1.5053   28.1295  202.2120
2019  109.25302   42   -1.5074   28.1066  203.7017
2019  109.25311   44   -1.5056   28.0840  205.3730
2019  109.25319   46   -1.5011   28.0746  207.2045
2019  109.25328   48   -1.4626   28.0411  207.3436
2019  109.25338   50   -1.1448   27.7462  203.9530
2019  109.25346   52   -0.8278   27.4566  200.9226
2019  109.25355   54   -0.6948   27.3505  199.7994
2019  109.25363   56   -0.6210   27.3089  198.5083
2019  109.25372   58   -0.4989   27.2259  195.8627
2019  109.25380   60   -0.4030   27.1750  194.4695
2019  109.25388   62   -0.3251   27.1523  195.4071
2019  109.25397   64   -0.2430   27.1630  198.0447
2019  109.25405   66   -0.1234   27.2234  204.6875
2019  109.25413   68   -0.0664   27.3863  216.4030
2019  109.25423   70   -0.0609   27.5189  229.5733
2019  109.25432   72   -0.0484   27.6743  238.4603
2019  109.25441   74   -0.0097   27.8478  242.8352
2019  109.25449   76    0.0471   27.9405  248.0106
2019  109.25458   78    0.0681   28.1058  255.3205
2019  109.25466   80    0.0575   28.4758  265.1770
2019  109.25474   82    0.1238   28.8198  275.2943
2019  109.25483   84    0.1752   29.0430  282.4478
2019  109.25491   86    0.1714   29.2519  286.3756
2019  109.25499   88    0.1259   29.4694  287.2250
2019  109.25509   90    0.0811   29.6863  285.4066

johnm33

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Re: Arctic Ocean salinity, temperature and waves
« Reply #243 on: May 23, 2019, 11:17:37 AM »
"I still think it's the push from the pacific into the chukchi that causes it"
Yes it looks like the Pacific water pushed in to the Arctic both sides of Chukchi plateau and it's energy transited across, probably also causing both the recent bottom melt that passed across the ice like a shadow[turbulence?] and forcing the thicker ice west as a consequence.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #244 on: May 23, 2019, 10:10:37 PM »
<snippage(large)> If there is an operative Alaskan coastal current, it cannot be on the surface as countercurrent surface ice eddies are not seen (unlike in East Greenland).<snippage(large)>
Net annual export is roughly 44,000 cubic km per year from the Arctic to Baffin Bay, a small portion of sverdrups coming in with the West Spitsbergen Current or leaving via the East Greenland Current.<snippage(large)>
Agreed. Even the rammb sliders I've looked at don't show any ice eddies(so far). Obviously they are present at the chukchi/beaufort boundary and mercator model would appear to show an occasional current sinking to 34m or lower. Depending on interpretation that could be seen as upwelling though.
There is this from https://link.springer.com/article/10.1007/s10584-012-0576-4
Quote
Fresh waters originating in the Pacific, in the Atlantic and in Arctic rivers can be distinguished via chemical signatures. For example, Pacific water has a distinctive neodymium signature imparted by the weathering of volcanic rocks that comprise the Pacific Rim (Goldstein and Hemming 2004); such rock is enriched in 143Nd via the radioactive decay of 147Sm, which is itself enriched in the mantle where the magma originates. The high 143Nd/144Nd ratio in Pacific water differs from those of Atlantic and river waters, which contact old continental crust.

Samples for analysis were collected during the IPY-GEOTRACES program in the southern Beaufort Sea. The high measured ratio of neodymium isotopes reveals a presence of Pacific freshwater even at great depth in the Canada Basin (Porcelli et al. 2009). Low salinity water from the Pacific can only reach such depth if its salinity is greatly enhanced via extreme ice growth, likely in flaw leads near the coast. The IPY study of neodymium therefore provides a new means to trace rare ventilation of the Arctic basins by Pacific water.
with an interesting take on temp/salinity I hadn't seen before shown below.
Limited readership here unless you post long animations ;)
« Last Edit: May 23, 2019, 10:26:53 PM by uniquorn »

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #245 on: May 23, 2019, 11:47:58 PM »
whoi itp103 internal buoy temperature reached 10C today, which probably says more about sunshine than air temperature. I won't post these temps on the melting thread again as they could be misleading. Thanks Bruce.
https://www.whoi.edu/page.do?pid=163356
« Last Edit: May 24, 2019, 12:17:44 AM by uniquorn »

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #246 on: May 26, 2019, 12:26:28 AM »
for reference, a rough overlay of global hycom cice ice thickness (GLBb 0.08-93.0) over ascat at 42% transparency.

b_lumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #247 on: May 28, 2019, 03:03:07 PM »
This is a GIF showing salinity at 30m 01.01. to today.

Are Atlantic waters soon mixing with Pacific waters? And could that have effects on the Beaufort Gyre?

Very big file due to a lot of days stitched together, sorry.

(i feel you petm  ;) )

kassy

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Re: Arctic Ocean salinity, temperature and waves
« Reply #248 on: May 28, 2019, 03:49:41 PM »
It would be cool to have some bathymetric overlay for that type of map.

b_lumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #249 on: May 29, 2019, 09:55:33 AM »
Sorry Kassy, i'm afraid this is beyond my abilities. :(