NCEP/NCAR 500mb height
monthly mean hgt from the NCEP Reanalysis
X axis: whole world in 144 2.50° steps,
first point at 0.00° E, last point at 357.50° E
Y axis: regular grid with 73 -2.50° steps,
first point at 90.00° N, last point at 90.00° S
Z at 500.00 millibar
Monthly data available from Jan1948 to Mar2024 ( 915 months)
Variable hgt (Monthly mean geopotential height) in m Full metadata.
Please consider downloading this field from the authoritative site.
If you really want to get it here,
NCEP/NCAR 500mb height is available as
a netcdf file (size 17.7174 MB).