Letter Re: Some Useful Mapping Web Sites
James, I’m sending you a link to some detailed maps of the world based on detailed data: several basic variables such as average precipitation, temperature variables, population, earth lights (and change in earth lights over time), biomass maps (vegetation) and more. Some linked pages contain data that can be used in virtual globes such as NASA World Wind. If you explore the various links, you can find a wealth of high quality data that could be used in a long term grid down/other scenario where this basic world information could be very useful for travel, and more. This can also …