NASA Earth Day/Night Images

We serve two NASA image products: The Blue and Black marble mosaics. We have filtered and down-ampled those as well at the same resolutions that are available for the Earth DEMs. However, all images are pixel-registered only.

The available resolutions for this image are:

• "01d", "30m", "20m", "15m", "10m", "06m", "05m", "04m", "03m", "02m", "01m", "30s". Where the suffix d, m and s stand for arc-degrees, arc-minutes, and arc-seconds. See also the manual of remotegrid for information about the grid registrations.

On first usage, the grids are downloaded to the user ./gmt/server/... directory. On later usages, the image(s) are loaded from that local directory.

Refer to earth_daynight for more details about technical detail, available resolutions, sizes, version information and references.

Example

I = gmtread(remotegrid("day", res="6m"))
viz(I)

or for the night images

I = gmtread(remotegrid("night", res="6m"))
viz(I)