B How can Greenland lose 269b tons/year and loose only 269km3?

AI Thread Summary
The discussion centers on the calculation of ice volume from mass, specifically addressing the discrepancy between Greenland's reported loss of 269 billion tons and the calculated volume of 292.39 km3. The density of ice is noted as 920 kg/m3, leading to the conclusion that the volume should exceed 269 km3. Participants question the origins of the figures used, including whether the mass was derived from volume or measured independently. There is clarification on the conversion between cubic meters and cubic kilometers, emphasizing the importance of accurate unit conversion. The conversation highlights the complexities in measuring glacial mass and volume accurately.
IvicaPhysics
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The density of ice is 920 kg/m3.
Now let's calculate.
m = 269 000 000 000 000 kg
p = 920 kg/m3
-----------------------------
v=?
V=m/p
V=269 000 000 000 000 kg / 920 kg/m3
V = 292 391 304 347 m3 = 292 391 304.347 km3
v > 269 km3
*NOTE* I made a mistake in the title. I meant to write 269 km3
[Note: Title fixed by moderator]
 
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IvicaPhysics said:
V = 292 391 304 347 m3 = 292 391 304.347 km3
There's your problem. If 1 km = 1000 m, then 1 km3 = (1000 m)3 = 1 000 000 000 m3.
 
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It would be interesting to know the source of the original two numbers. For example was the mass calculated from the volume anyway or was the mass measured independently by gravitational survey?
 
IvicaPhysics said:
V = 292 391 304 347 m3 = 292 391 304.347 km3
v > 269 km3

As DrClaude said, 1 km3 = (1,000m)3=1,0003m3=109 m3
or
1m3 = (0.001km)3=0.0013km3=10-9km3
so
V = 292 391 304 347 m3 x 10-9km3/m3= 292. 391 km3
 
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