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GEUS-Glaciology-and-Climate / freshwater

Greenland liquid water runoff from 1958 through 2019
https://doi.org/10.5194/essd-12-2811-2020
GNU Lesser General Public License v3.0
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Improved DEM surface #1

Closed mankoff closed 4 years ago

mankoff commented 4 years ago

Currently using GIMP 0714 DEM surface. There may be better surface to use? Or a temporally homogeneous surface instead of the temporally diverse GIMP surface?

However, this is likely not a major issue as shown by the sensitivity study about outlet displacement with different routing options.

Any issues relating to subglacial routing are related to this.

mankoff commented 4 years ago

Ideally surface updates temporally each year matching runoff date.

mankoff commented 4 years ago

Now using ArcticDEM 100 m. Can still improve to higher res.

mankoff commented 4 years ago

Higher than 100 m doesn't appear to be needed after comparing stream routing to Google Earth satellite imagery of streams.