TempLS mesh, reported here (as of 8 April, 4359 stations), was down from 1.074°C in Feb to 0.988 in March (base 1961-90). This is comparable to the drop in the TLT satellite indices, and greater than the NCEP/NCAR index (0.057). TempLS grid dropped by only 0.037°C, which is similar to NCEP/NCAR. The TempLS anomaly is the second highest in the record, after February.
The spherical harmonics map is here:
Again unusually warm in Russia and most of N America (except Labrador strait region). Not so warm in Arctic, cold in Antarctica, and also cool in N Pacific.
The reason for the grid-mesh discrepancy is again the different coverage of the events at the poles. Both cooled, and the mesh algorithm covers that better. So GISS may well drop more than NOAA and HADCRUT.
To illustrate that, I'll show the attribution of the anomaly (from here):
It shows the area-weighted contributions to the average. SST actually went up a little. But Arctic and Antarctic went down from Feb, and it looks like in sum, by about 0.04°C. That is fairly close to the difference between mesh and grid. Otherwise Asia (excl Sib), Siberia and N America were the big contributors, with Europe still well positive, but less than Feb.