Patch for errors in NASA OceanColor L3 nc files. Specially fix the UD flip issue. #8380
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… flip issue. NASA MODIS L3 grids are a mess, with wrong coordinates and the valid_min/max attributes in opposite order of that of the lat vector. That is, the lat vector is top-down but valid_min = -90 and valid_max = 90. Furthermore, the grid is grid-registered and the start lat should be -90 + 180/4321/2 = -89.97917148808146 but it wrongly starts at -89.979171752929688 (well ends at this number because the vec is top-down). Same mess with the lon vector.
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NASA MODIS L3 grids are a mess, with wrong coordinates and the valid_min/max attributes in opposite order of that of the lat vector. That is, the lat vector is top-down but valid_min = -90 and valid_max = 90. Furthermore, the grid is grid-registered and the start lat should be -90 + 180/4321/2 = -89.97917148808146 but it wrongly starts at -89.979171752929688 (well ends at this number because the vec is top-down). Same mess with the lon vector.
This PR applies fixes to those nc files such that grid has the right lat order and do not print (because fixed) worrying warnings like