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Author Topic: Daily Extent, Area and Volume Data  (Read 1498 times)

Revillo

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Daily Extent, Area and Volume Data
« on: May 27, 2016, 08:42:29 AM »
I'm interested in making some interactive visualizations that simultaneously include daily (Arctic) area, extent and volume figures for as far back as they're available.

So far I've found NSIDC extent values 1979-2014:
ftp://sidads.colorado.edu/DATASETS/NOAA/G02135/north/daily/data/NH_seaice_extent_final.csv

And PIOMAS daily volume 1979-2016 here:
http://psc.apl.uw.edu/research/projects/arctic-sea-ice-volume-anomaly/data/

I can't seem to find the IJIS data for area/extent, or another area dataset. I understand that these datasets aren't perfectly intercompatible but I'd like to get the rough idea across. Does anyone happn to have all this data in a format that's ready to go or know where I can find it? Thanks!

Neven

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Re: Daily Extent, Area and Volume Data
« Reply #1 on: May 27, 2016, 08:49:26 AM »
Revillo, if you go to the Arctic Sea Ice Graphs website, you'll see links to many datasets on the upper right (like JAXA). Also check out Wipneus' website, Arctische Pinguin, for any spreadsheets he has on offer.
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Revillo

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Re: Daily Extent, Area and Volume Data
« Reply #2 on: May 27, 2016, 09:25:09 AM »
Oh Thanks Neven, had missed that panel entirely.
 
It looks like my best bet would be to use the monthly values for extent and area from NSIDC, and then average the PIOMAS values for each month.

In your opinion, would there be any value in using these in concert with PIOMAS volume? Or would you consider the data sets too distinct?

Neven

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Re: Daily Extent, Area and Volume Data
« Reply #3 on: May 27, 2016, 10:06:48 AM »
Oh Thanks Neven, had missed that panel entirely.
 
It looks like my best bet would be to use the monthly values for extent and area from NSIDC, and then average the PIOMAS values for each month.

In your opinion, would there be any value in using these in concert with PIOMAS volume? Or would you consider the data sets too distinct?

I'm not an expert, so I don't know the exact differences between PIOMAS and NSIDC SII, etc, with regards to land masks and geography covered, but it should work as a 'rough' idea, if all years are consistent.
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Tealight

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Re: Daily Extent, Area and Volume Data
« Reply #4 on: May 27, 2016, 02:51:38 PM »
If you also want to include Northern Hemisphere snow area, you can get weekly data from Rutgers University and then interpolate values for daily snow area.

http://climate.rutgers.edu/snowcover/table_area.php?ui_set=2

Revillo

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Re: Daily Extent, Area and Volume Data
« Reply #5 on: May 29, 2016, 06:23:24 AM »
Here's my first attempt at a visualization, please allow a moment for it to load. A browser supporting WebGL is also required (nearly all current browsers do):

http://htmlpreview.github.io/?https://raw.githubusercontent.com/revillo/arctic-slices/master/slices.html

Please let me know if anyone finds this sort of thing useful or if they have any suggestions on how to improve it, or if you have an idea for a similar project.

If you also want to include Northern Hemisphere snow area, you can get weekly data from Rutgers University and then interpolate values for daily snow area.

http://climate.rutgers.edu/snowcover/table_area.php?ui_set=2


Thanks Tealight, I'll think about a way to incorporate snow cover.

Laurent

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Re: Daily Extent, Area and Volume Data
« Reply #6 on: May 29, 2016, 12:35:46 PM »
I don't find it very useful as such but very nice attempt. I would find it more readable if it was seen from left to right, that is how I expect the time to be seen. Put the informations on the upper left and right corner and increase the visual differences. May be having a year to compare one slice with an other also. Thanks for the work.