The Climate Explorer will accept netCDF files provided they are reasonably CF-compliant and adhere to the following extra restrictions.

1. There is exactly one variable called 'lon*' or 'x' with units 'degree[s]_e*'.
2. There is exactly one variable called 'lat*' or 'y' with units 'degree[s]_n*'.
3. There is exactly one variable called 'time*' or 't' with consecutive days/months/years. If there are missing data please include these time steps. (Note that the ASCII time series representation does allow holes in the time axis.)
4. There is exactly one variable not called 'time*' or 't' that depends at least on time and possibly on the x, y and (optionally) z-axes. Missing values are indicated by _FillValue or missing_value, valid_min/valid_max or not considered.

'*' denotes anything, [x] denotes x is optional. All name requirements are case insensitive.