I have downloaded a SST image of the United Kingdom. It is in PNG format with no coordinate system.
I know the dimensions of my image and its lat/long range. However, i'm not sure what approach to take in Arcmap to set the co-ordinate system.
There is a web-page describing how to convert image co-ordinates to latitude/longitude but it is beyond my scope link
The image is apparently produced in Mercator projection
Note, this will need to be carried out on multiple rasters, so a automated/batch approach, which isn't interactive or manual, is required
Dimension 1596 x 1617
Latitude range 47 — 62.999108
Longditude range -15 — 13
Pixel dimensions 1.100149 x 1.100149