Originally Posted by StuM
Sorry, I don't understand what you are actually asking. Care the rephrase your question?
Rephrasing question but it seems my question has already been answered.
I am aware for any chart or map to be produced on a flat sheet of paper a projection must be used, mercator or whatever. I was wondering if the distortion created by the use of the projection was the reason for needing a geostrophic wind
I have before me a globe and a synoptic chart printed off the internet
I have made some crude measurements as follows:
I have measured one degree of longitude at 70 deg LAT and 40 deg LAT in mm.
On the globe the measurements are 14mm and 31mm respectively.
On the synoptic chart the measurements are 13mm and 34mm respectively.
There does seem to be some distortion here but maybe does not account for the significant differences in the geostrophic wind
I do have a basic understanding of Coriolis and once posted on a forum asking for someone to work me an example of the coriolis formula to assist my further understanding but no takers?.