New GMT remote datasets

Announcements
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We are pleased to announce a major addition of remote datasets including:

  • Reliefs grids of other celestial bodies (Moon, Mercury, Venus, Mars and Pluto)
  • Mean Sea Surface
  • Mean Dynamic Topography
  • Distance to nearest shoreline.
  • Earth Free-Air Anomaly Errors
  • N-S and E-W deflection of the vertical,

We now offer a total of 25 grids. Read more about them and find the data citations on the GMT dataset documentation.

3 Likes
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Awesome to have all of these grids available!

The Lunar LOLA original grid dimensions look a little strange. Using, e.g., the N/S dimension; (180/53347)*3600 gives a cell size of 12.14688 seconds. The table reports a cell size of 14.06… seconds.

Isn’t the original LOLA DEM given at 1/256 of a degree resolution (= 14.06)? In that case the dimensions of the original grid should be: 92160 x 46080.

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Not sure what numbers you are using. File dimension gives these increments

rpn 360 92160 DIV 3600 MUL

14.0625

We are working from the released Tif file https://planetarymaps.usgs.gov/mosaic/Lunar_LRO_LOLA_Global_LDEM_118m_Mar2014.tif which is 92160 x 46080 and that gives 14.0625 seconds increment, which is why you need 6.5 to work with the 4 highest oddly-resolution planetary data sets.