Thursday, December 12, 2013
On elevation and sun dogs
during the traverse to ABN.
For the attentive and technically minded reader:
You may have noticed an asterix (*) in my last post regarding elevation,
which I meant to get back to in that post. I've been flagging elevation as
2677m. This isn't definitive, as it is based on barometric pressure in
conjunction with GPS (using some clever jiggery pokery in the device
itself). The alternative is pure GPS, which doesn't give good elevation
from a basic GPS. Digital elevation data for the site (Bamber's DEM)give an
elevation of 2701m, which is probably the best value we have. Eventually we
will have good a good GPS fix from a geodetic GPS we will deploy.