Dear Grass usrers, I would like to ask if someone can clarify me the following question w.r.t. DMSP nightlight data and specially VIIRS/DNB nighttime light data: I have found in some sources in the internet, (i.e Google Earth Engine) saying the pixels' spatial resolution for VIIRS/DNB nighttime light data is of 15 Arc Seconds while for DMSP is 30 Arc Seconds, is this correct; while in some other places several parers and mainly websites, it appears that VIIRS/DNB nighttime light data it naturally a pixels' spatial resolution of 750 m or ~ 500 while DMSP pixels' size is of about 1km x 1km?
If, the Arc Seconds measure of 30 for DSMP nightlight data and 15 for VIIRS/DNB nighttime light data is correct, how should I define this magnitude in meters? Is it correct to say that DMSP data pixels' spatial resolution size is about 1 km x 1 km while VIIRS/DNB night light data has a pixel size of 500 x 500 m, or it should be said that VIIRS/DNB nighttime light data is 750 x 750 m? Thanks a lot for your response. Berst regards,
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