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Author Topic: Arctic Ocean salinity, temperature and waves  (Read 56670 times)

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #450 on: September 16, 2019, 10:02:07 PM »
Mixing. whoi itp103, sep16.
6m temperature over 2C
« Last Edit: September 16, 2019, 10:09:31 PM by uniquorn »

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #451 on: September 17, 2019, 12:25:14 AM »
A salinity hiccup on whoi itp105 over the last 3 days on both microcats at 5m and 6m
https://www.whoi.edu/page.do?pid=163456

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #452 on: September 17, 2019, 12:38:43 PM »
Following up on the 2 buoys above, here is amsr2-uhh overlaid onto mercator 0m temperature at 60% transparency, amundsen gulf and mclure strait, jul1-sep15. amsr2-uhh 0% concentration, normally dark blue, has been set to fully transparent.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #453 on: September 18, 2019, 07:56:54 PM »
ascat showed some weather over itp105, and an overlay of Aleph_Null's nullschool hindcast would appear to confirm it is associated with fast moving high pressure cyclone, but the dates don't really match up with the low salinity so...
don't know

ascat, north of CAA, day240-260
ascat overlaid with h~f_190906-190911_iwpd_850hPa
edit: technote - poor scaling on the overlay

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #454 on: September 20, 2019, 02:56:40 PM »
whoi itp116 is the only itp completing full profiles. The rest have flat motor batteries I think.
With the stupid questions thread in mind, here is a closer look at temperature(purple), salinity(red) and density(green), 10-50m, day234-263.
There isn't much thermocline to see at 34m close to the pole(~0.03C), the halocline is more pronounced.
Maybe the mosaic buoys will provide some more revealing data

blumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #455 on: September 20, 2019, 05:59:00 PM »
New profiler ITP119! \o/
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uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #456 on: September 20, 2019, 11:55:48 PM »
Great news :)
Reposting  whoi itp110 7m-50m from 2018, day264 to 2019, day120 (at location -134.8350  73.6623N) with location insert.

edit: corrected label and added part2
whoi itp110 7m-80m from 2019, day123-218
density green, temperature purple, salinity red
temp    -1.8 to 0.6C
salinity  27.5 to 31.2
density 1021.5 to 1025kg/m^3
« Last Edit: September 21, 2019, 01:49:12 PM by uniquorn »

MyACIsDying

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Re: Arctic Ocean salinity, temperature and waves
« Reply #457 on: September 21, 2019, 07:53:31 PM »
It's hard to match the ITP buoys temperature & salinity profiles with their location using the standard plots provided, so I practiced my R and took a stab at it.

Because of the constraint of one type of value displayed per location point, I started with the average temperature of the 0-60 dbar ocean layer. I'd like to animate it based on date with a fading trail, but if anyone has suggestions for a better calculated value to display, let me know please.

L3 data was available for years 2005-2014

slow wing

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Re: Arctic Ocean salinity, temperature and waves
« Reply #458 on: September 22, 2019, 10:40:24 AM »
It's hard to match the ITP buoys temperature & salinity profiles with their location using the standard plots provided, so I practiced my R and took a stab at it.

Excellent! Much appreciated initiative, MyACIsDying. This is a plot I've wanted to see often.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #459 on: September 22, 2019, 12:09:11 PM »
if anyone has suggestions for a better calculated value to display, let me know please.
Very nice. As the data is quite old it may be more interesting to animate depthwise, rather than date. Perhaps a 10m average down to, say, 350m? If you are prepared to share code it would be most welcome on a dev thread.
This approach may also work well with the mosaic buoys.
L3 data time series would be handy for comparison with more recent data in similar locations though. Can you provide a link pls?
edit: I read the small print and see data goes up to 2019
« Last Edit: September 22, 2019, 10:51:46 PM by uniquorn »

blumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #460 on: September 22, 2019, 04:33:34 PM »
SSS, 01. Sept 2018 to 20. Sept 2019, 10-day increments

Click to play
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blumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #461 on: September 22, 2019, 04:54:20 PM »
Salinity 30m, 01. Sept 2018 to 20. Sept 2019, 10-day increments

Click to play
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Pmt111500

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Re: Arctic Ocean salinity, temperature and waves
« Reply #462 on: September 22, 2019, 09:51:25 PM »
Yeah, Kara Sea starts to be pretty Atlantic.
Cooling the outside by heat pump.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #463 on: September 22, 2019, 10:34:03 PM »
If the model is correct there is also a more clearly defined atlantic finger reaching into the Beaufort from the CAA. See https://forum.arctic-sea-ice.net/index.php/topic,2417.msg188825.html#msg188825 for animation going back to 2017.

This is interesting from the mosaic expedition:
 https://epic.awi.de/id/eprint/50082/1/Expeditionsprogramm_PS122.pdf   page 55
Quote
Outline The sea ice in the Arctic Ocean is changing under global warming, and there is evidence that the inflow of Atlantic water (AW) has reduced the upper ocean stratification enough, such that convective wintertime deepening of the mixed layer may have caused a sizable upward heat flux in parts of the Eurasian Basin. In the more permanently ice-covered central regions of the Arctic Ocean, it is thought that the halocline still prevents vertical mixing and thus, strong upward heat fluxes year-round. However, wintertime measurements hardly exist. Near-surface trapping of heat during the late summer has been of growing importance as the influence of solar radiation entering the ocean increases with snow melt, melt-pond formation and increasing open water fraction of the ice-pack. Observing a full seasonal cycle as well as studying the ice-ocean-atmosphere system in the Arctic at shorter timescales using an extended set of parameters will be extended in an unprecedented manner by MOSAiC. The specific focus of the OCEAN team is here on the physical parameters of the upper ocean, bounding on the sea-ice and the atmosphere, and the interaction with the lower parts of the water column. This will not only improve our understanding of the physics of the upper ocean at times where no or few measurements exist and throughout a full seasonal cycle but also improve our understanding of feedbacks with the sea-ice/snow, the lower atmosphere, biogeochemical processes and the ecosystem. The overall aim of our work is to understand, throughout all seasons, the dynamics in the upper Arctic ocean mixed-layer and the halocline on the scale of turbulent vertical mixing to the (sub)mesoscale, embedded in the Arctic system of large-scale advective pathways of different water masses.

MyACIsDying

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Re: Arctic Ocean salinity, temperature and waves
« Reply #464 on: September 22, 2019, 11:53:23 PM »
if anyone has suggestions for a better calculated value to display, let me know please.
Very nice. As the data is quite old it may be more interesting to animate depthwise, rather than date. Perhaps a 10m average down to, say, 350m? If you are prepared to share code it would be most welcome on a dev thread.
This approach may also work well with the mosaic buoys.
L3 data time series would be handy for comparison with more recent data in similar locations though. Can you provide a link pls?
edit: I read the small print and see data goes up to 2019

Thanks, your suggestion turned out nice and I want to go deeper but ran out of time, so 0-350m it is for now. I'll post the R code over at the dev thread with some warning of amateur practices. Only for the final.zip data again, the others have different structures but next on the list.


uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #465 on: September 23, 2019, 12:16:34 AM »
Very, very nice, an arctic ocean visualisation with the same scale from top to bottom (well 350m)

blumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #466 on: September 23, 2019, 07:55:25 AM »
Very nice indeed! Thank you, MyACIsDying!
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uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #467 on: September 23, 2019, 01:16:22 PM »
Does R do anything 3D? Playing around with imageJ gave me this so far...
going to dev thread
« Last Edit: September 23, 2019, 01:22:05 PM by uniquorn »

blumenkraft

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Re: Arctic Ocean salinity, temperature and waves
« Reply #468 on: September 23, 2019, 01:27:50 PM »
Let it rotate so you hit every dot. Looks awesome!
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uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #469 on: September 27, 2019, 09:26:48 PM »
I'll post the R code over at the dev thread with some warning of amateur practices. Only for the final.zip data again, the others have different structures but next on the list.
Having fun installing R and the dependencies dependencies, nearly ready to test. Also played around with various overlays but the projection used here is different. 3D is too much for me at the moment.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #470 on: September 28, 2019, 10:33:08 AM »
3 new whoi itp buoys for the CAB/Beaufort now, itp117, 118 and 119.
itp116 drifting close to the pole.
itp117 and 118 have SAMI with temperature but no salinity   :-\
« Last Edit: September 28, 2019, 10:57:04 AM by uniquorn »

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #471 on: September 28, 2019, 12:50:22 PM »
And now ITP 110 has hoisted the white flag and surrender.<snippage>
Were those temp/salinity charts from itp110 or mercator?

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #472 on: October 01, 2019, 11:56:00 PM »
Ice mass balance buoy, Beaufort.
https://www.cryosphereinnovation.com/386840

MyACIsDying

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Re: Arctic Ocean salinity, temperature and waves
« Reply #473 on: October 03, 2019, 12:11:03 AM »
Does R do anything 3D? Playing around with imageJ gave me this so far...
going to dev thread
R does a lot for me when I talk right to her :) I'm testing with translating lon/lat into xy coords so I can use base ggplot2 functions like geom_path with coordinates offsets, only y axis down per layer for now to produce the first image. need to optimize it further so I can program angles to rotate the 'camera' around and see all sides. Would take to much processing for now. I'm starting to publish stuff on GitHub if you're interested.

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #474 on: October 06, 2019, 04:36:19 PM »
Very interested. That's very close to what I've been thinking of. Thanks.
edit - itp116 has a smaller footprint for testing rotation.
« Last Edit: October 06, 2019, 08:31:44 PM by uniquorn »

uniquorn

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Re: Arctic Ocean salinity, temperature and waves
« Reply #475 on: October 09, 2019, 03:38:44 PM »
Large format mp4, amsr2-uhh over gmrt bathy, sep1-oct8. Pls download as I'll remove it within 48hrs (it's a bit large) -removed
« Last Edit: October 10, 2019, 09:47:12 PM by uniquorn »