Author Topic: Test space (Read 44934 times)

uniquorn · « **Reply #300 on:** August 31, 2020, 11:26:18 PM »

amsr2-uhh jun1-aug30 no dates crf29
removed

uniquorn · « **Reply #301 on:** September 17, 2020, 12:28:09 AM »

tried to do difference on seaice.de post here
Strange that the two years were different pixel sizes. A very rough resize produced this, so I think I've done something wrong. Interesting though.
removed

uniquorn · « **Reply #302 on:** September 17, 2020, 12:42:43 AM »

grain extract was better. Might try more accurate scaling tomorrow.
posted elsewhere

uniquorn · « **Reply #303 on:** September 24, 2020, 10:10:09 PM »

155 arctic buoys, mar-sep

uniquorn · « **Reply #304 on:** October 02, 2020, 01:07:03 AM »

finally starting to get my head around macid's code for this
will probably have to be mp4. Maybe possible to label the years. Cairo might fix the colours or work out how to make them discrete.

edit: whoi itp7,8 and 9 produced over 9million variable and took 6hrs to load so looking at loading them into MySQL and querying from there. I wonder what computer macid was using.

yu · « **Reply #305 on:** October 03, 2020, 12:29:23 PM »

VISHOP file

oren · « **Reply #306 on:** October 04, 2020, 08:15:58 AM »

Interesting visualization.

uniquorn · « **Reply #307 on:** October 05, 2020, 09:49:40 PM »

buoys, april-oct. Ignore the deployment straight lines.

SimonF92 · « **Reply #308 on:** October 06, 2020, 04:30:55 PM »

Quote from: uniquorn on October 05, 2020, 09:49:40 PM

buoys, april-oct. Ignore the deployment straight lines.

thats amazing!

uniquorn · « **Reply #309 on:** October 16, 2020, 03:41:39 PM »

wake timing a bit quick -removed

uniquorn · « **Reply #310 on:** October 20, 2020, 10:59:42 PM »

IBCAO_v4_200m-sliced

sidd · « **Reply #311 on:** October 21, 2020, 06:10:01 AM »

very nice.

sidd

yu · « **Reply #312 on:** October 22, 2020, 06:02:10 AM »

Hello,

How do i load a pic. that will look good but will be small in size?
Its currently 8 Mb of jpg copied from excel as picture.
Thank you

oren · « **Reply #313 on:** October 22, 2020, 07:24:41 AM »

It looks great! I can't think how you can reduce it much and not lose the level of detail of the second zoom.
However, I don't think size is that much of an issue, as users can decide whether to click it or not. Just warn it's a large image.

John_The_Elder · « **Reply #314 on:** October 22, 2020, 04:20:04 PM »

I like the layout, very visual.
Perhaps a legend of years and days for new users would help.
John

uniquorn · « **Reply #315 on:** October 26, 2020, 01:40:43 PM »

a quick look at ascat, some missing days, best viewed slow --

uniquorn · « **Reply #316 on:** October 26, 2020, 09:34:16 PM »

with v103 overlay at 60%. Interesting effect with amsr2 moving over the stationary repeated missing frames.

uniquorn · « **Reply #317 on:** October 29, 2020, 11:33:00 PM »

not sure about this one. grain extract on sstfnd here, 1 day diff. clearly would be better without the contours.

A-Team · « **Reply #318 on:** October 30, 2020, 02:25:09 PM »

Grain merge is going to leave a lot of 128 where the difference is 0 so it helps to use the Levels tool (on image and palette) to brighten the colors. SSTfnd will primarily address the Siberian side so there is some resolution gain (for a given size) to cropping to the ROI. Contours here make it rather busy so the number of contour levels could be lowered (or dispensed with altogether).

Note the cryo2smos file should be perfectly complimentary for a given date, meaning the two can be combined in a single image but with a double palette (labels top and bottom or completely distinct). It also provides an ice mask to go with the land mask. Selecting and re-coloring this allows them to be distinguished from the open water 128 which might be left alone or made a light white.

uniquorn · « **Reply #319 on:** November 20, 2020, 12:44:39 PM »

comparison of 2013 and 2020 melting season in the beaufort using amsr2-uhh
duplicated some missing or poor quality days. It's possible to use higher res images (larger file sizes)

BornFromTheVoid · « **Reply #320 on:** November 27, 2020, 10:15:43 PM »

I've been working with the Central England Temperature (CET) series a bit lately, and one thing I've worked out is the most recent warm and cold record for each day of the year. I'm toying around with different visualistion methods.
The one below has the daily records with diamond symbols and the monthly averages with solid lines. The 365 days of the year follow the 360 degrees of the circle. The bands are at 50 day intervals, so the closer to the centre, the more recent the record was set.
However, I still think it's a bit messy, so any suggestion on altering it or whatever else is quite welcome!

kassy · « **Reply #321 on:** November 27, 2020, 11:20:59 PM »

For the sort of data that is about as clear as you can get it.

The records also follow an absolute trend so there should be a way to colour code that?

uniquorn · « **Reply #322 on:** November 29, 2020, 12:53:02 PM »

Playing with cmems lobelia (My Ocean) https://tinyurl.com/yyhff8p7
Here using gimp grain extract on one day difference.

uniquorn · « **Reply #323 on:** November 29, 2020, 02:18:41 PM »

added clahe 2.1 to bring out the thin ice movement in the laptev. file size is a bit bigger

oren · « **Reply #324 on:** November 30, 2020, 03:26:55 AM »

Great animation.

SimonF92 · « **Reply #325 on:** November 30, 2020, 11:01:21 AM »

Quote from: uniquorn on November 29, 2020, 02:18:41 PM

added clahe 2.1 to bring out the thin ice movement in the laptev. file size is a bit bigger

I have been wanting to track individual floes (average area and velocity) in the CAB for a while. I got it working with something for my phd (cells) and I know it could probably work on ice floes because effectively they are both moving objects on a plane.

I have been looking for good images of floes for a while and these are by far the best I have seen uniquorn. Is the generation of these images automatable?

uniquorn · « **Reply #326 on:** November 30, 2020, 09:14:16 PM »

Quote

track individual floes

In this case I think you would be tracking modelled floes.

Quote

Abstract
The Arctic Sea Ice Analysis and Forecast system uses the neXtSIM stand-alone sea ice model running the Maxwell-Elasto-Brittle sea ice rheology on an adaptive triangular mesh of 10 km average cell length. The model domain covers the whole Arctic domain, excluding the Canadian Archipelago, the Baffin and Hudson Bays. neXtSIM is forced with surface atmosphere forcings from the ECMWF (European Centre for Medium-Range Weather Forecasts) and ocean forcings from TOPAZ4, the ARC MFC PHY NRT system (002_001a). neXtSIM runs daily, assimilating OSI-SAF sea ice concentrations (both SSMI and AMSR2) from the SI TAC and providing 7-day forecasts. The output variables are the ice concentrations, ice thickness, ice drift velocity and snow depths, provided at hourly frequency. The adaptive Lagrangian mesh is interpolated for convenience on a 3 km resolution regular grid in a Polar Stereographic projection. The projection is identical to other ARC MFC products.

The movement is interesting though and as it's based on osi-saf it should be reasonably accurate. Available hourly

SimonF92 · « **Reply #327 on:** November 30, 2020, 10:15:17 PM »

Thanks for providing the paper. I think you are correct, pretty complicated stuff to get your head around though

uniquorn · « **Reply #328 on:** December 01, 2020, 05:59:52 PM »

iabp drift oct26-nov30
stop start in the mclure strait.

uniquorn · « **Reply #329 on:** December 11, 2020, 11:04:46 PM »

cmems vs buoy test, dec1-11. ice motion not too bad.
should have gone with bigger buoys, shame about the cmems glitch dec8, dates not quite synced

uniquorn · « **Reply #330 on:** January 18, 2021, 10:11:57 PM »

ascat large 2020334-2021017
a bit too large - removed

News:

Author Topic: Test space (Read 44934 times)