13
votes
Accepted
Does the 0m elevation height of a Digital Elevation Model (Copernicus DEM) correspond to mean sea level?
From the website you linked:
Coordinate Reference System: Horizontal WGS84-G1150 (EPSG 4326) (DGED & DTED format), (EPSG 3035) for continental Europe and UTM , (EPSG 32740, 32622, 32738, 32620) ...
- 15.4k
6
votes
If the Sea level rises, will the mountains lose their height?
It depends on which vertical datum your mountain elevation references. If the elevation of the mountain is expressed in meters above mean sea level (or some other tidal datum) then yes. If the ...
- 81
5
votes
If the Sea level rises, will the mountains lose their height?
If the Sea level rises, will the mountains lose their height?
It depends on the mountain. Some mountains are rising due to plate tectonics or isostatic rebound. This can easily outpace sea level rise ...
- 23.1k
4
votes
Accepted
How to find the altitude above mean sea level of the wind in forecast data such as GFS
It makes sense, some locations have a surface pressure under 1000 mb... which means to get to 1000 mb you'd have to go below ground (the basic idea of the calculation is that pressure decreases as you ...
- 8,713
4
votes
Does the 0m elevation height of a Digital Elevation Model (Copernicus DEM) correspond to mean sea level?
What I would do is cast the data into a new projection (if absolutely necessary).
In particular, once you have a global model tied to a known reference ellipsoid you can convert that into local ...
- 41
3
votes
Does the 0m elevation height of a Digital Elevation Model (Copernicus DEM) correspond to mean sea level?
Here is the answer from the Support Team of Copernicus:
The definition of the 0 m elevation for ocean areas is not dependent on the acquisition date of the input images. Please note that the ...
- 313
3
votes
How do you estimate the depth of a lake?
You may as well ask if you stand on the coast of east Africa, the Arabian peninsular, Iran, west coast of India, or the southern tip of India, the west coast of Sumatra, the east coast of Madagascar, ...
- 24.6k
2
votes
Accepted
Obtaining ELA from AAR method
The ELA (Equilibrium Altitude) is related to the AAR (Accumulationa Area relationship). But before exploring the realationship we must establish what these entities mean.
First, AAR, relates the area ...
- 5,014
2
votes
Accepted
How or where to find out how many percent of the Earth's surface is above/below a certain altitude?
What you want is known as a hypsograph or a hypsographic/hypsometric curve which shows the distribution of elevations of the Earth's land surfaces (and can be extended to include the distribution of ...
- 813
1
vote
How do you estimate the depth of a lake?
IF (a big if) you can see enough local topography to estimate the underwater slopes, you can get some likely bounds. If the lake had filled yesterday, projecting the slopes on either side until they ...
- 89
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