Dataset: Greenhouse gases

[pmast]

• [x] update to v4.2 data (ranging to december 2019) [get data here] (https://drive.google.com/drive/folders/1OoiTRqfikOpm72fRs5FwflPfb9o6hcX4)
  • variables are: xch4 and xco2
• [x] export CO2 data with correct color scheme (see bellow)
• [x] export CH4 data with correct color scheme (see bellow) - [ ] get data from copernicus

[pmast]

I checked back email conversations and data stores. It seems the Obs4Mibs data we have is the best available. Unfortunately.

The data only has a 2º x 2º resolution.

[pmast]

CO2:

400 168 35 21
394.17 255 109 43
388.33 250 227 66
376.67 0 213 252
365 0 44 153

[pmast]

CH4:

1825 183 40 24
1812 240 60 40
1807 255 100 40
1785 255 220 65
1766 233 233 80
1755 180 245 127
1731 60 240 220
1717 0 200 255
1664 0 50 170
1650 0 44 153

[pwambach]

Output images had only one color. After checking the min/max values I adjusted the colors maps to

0.000001825 183 40 24
0.000001812 240 60 40
0.000001807 255 100 40
0.000001785 255 220 65
0.000001766 233 233 80
0.000001755 180 245 127
0.000001731 60 240 220
0.000001717 0 200 255
0.000001664 0 50 170
0.000001650 0 44 153
nv 0 0 0 0

and

0.000400 168 35 21
0.00039417 255 109 43
0.00038833 250 227 66
0.00037667 0 213 252
0.000365 0 44 153
nv 0 0 0 0

[pmast]

:+1:

[pmast]

@lassescheele, could you prepare the latest version of the greenhouses gases for us?

You already had done that earlier.

https://drive.google.com/drive/folders/1OoiTRqfikOpm72fRs5FwflPfb9o6hcX4

[lassescheele]

It seems that the new data (v4.2) has a resolution of only 5° x 5°. @pmast is that as expected?

[pwambach]

I tested the new xco2 files and somehow the resolution seems to be less than 180x90 pixels. The new xco2:

and the old xch4:

Both source files (the tifs from Lasse) have a resolution of 180x90 but the new xco2 seems to have a lower "internal" resolution. The question is if it's like that in the original source files or if comes from our processing.

[pmast]

Hm that's not nice.

The portal where I have downloaded the data indeed states that it is 5º x 5º resolution which would be 72x36 pixel. I have to trace back where I got the older version from. And talk to the science team directly.

[pmast]

I got in contact with the science team:

1. they like what we have
2. there will be a 2 degree version coming for the latest data, just not yet.

--> in the mean time we should add the 5 degree version of CH4 as well.

I prefer the 5 degree version above the 2 degree version because it runs longer.