This dataset mainly contains two types of data: 
1) In situ data from mooring buoy (*mooring)
2) Model data (mzht*)

In the *mooring file, ue2 and ve2 is the zonal and meridional velocity used in the paper, dimension is (depth,time).
x1 is the time and y1 is the depth corresponding to the velocity data.
t2 and s2 is the temperature and salinity used in the paper.
x2 is the time and y2 is the depth corresponding to the emperature and salinity data, dimension is (depth,time).
other variables in the *mooring file are not relavant in this paper, which can be delete.
The location of the mooring is 113E and 16 N.

In the mzht* file, mzht2012 to mzht2015 means the data from 2012 to 2015. In each file, the variables mt and zt is the meridional and zonal heat transport in the SCS. The dimension is (latitude,longitude,depth,month). The S2Bgrid file contains the grid info which is standard MITgcm model output format.