CDO

I tried
cdo -L -uv2dv uv.cli_1991_2020.nc dv.cli_1991_2020.nc
, which returned
cdo uv2dv: Allocate 2 arrays to hold the Legendre polynoms: size=484352 Bytes
cdo uv2dv: Processed 196608 values from 2 variables over 12 timesteps [0.04s 13MB].

However, the file is strange

cdo -griddes dv.cli_1991_2020.nc #

1. gridID 1 #
   gridtype = spectral
   gridsize = 1892
   truncation = 42
   complexpacking = 1
   cdo griddes: Processed 2 variables [0.03s 8012KB].

cdo -griddes uv.cli_1991_2020.nc #

1. gridID 1 #
   gridtype = gaussian
   gridsize = 8192
   xsize = 128
   ysize = 64
   xname = lon
   xlongname = "longitude"
   xunits = "degrees_east"
   yname = lat
   ylongname = "latitude"
   yunits = "degrees_north"
   numLPE = 32
   xfirst = 0
   xinc = 2.8125
   yvals = 87.8637988392326 85.0965269883174 82.3129129478863 79.5256065726595 76.7368996803683
   73.9475151539897 71.1577520115873 68.3677561083132 65.5776070108278 62.7873517989631
   59.9970201084913 57.2066315276432 54.4161995260862 51.6257336749382 48.8352409662506
   46.0447266311017 43.2541946653509 40.463648178115 37.6730896290453 34.8825209937735
   32.091943881744 29.3013596217627 26.510769325211 23.7201739335347 20.9295742544895
   18.1389709902393 15.3483647594915 12.5577561152307 9.76714555919557 6.97653355394863
   4.18592053318915 1.3953069108195 -1.3953069108195 -4.18592053318915 -6.97653355394863
   -9.76714555919557 -12.5577561152307 -15.3483647594915 -18.1389709902393
   -20.9295742544895 -23.7201739335347 -26.510769325211 -29.3013596217627
   -32.091943881744 -34.8825209937735 -37.6730896290453 -40.463648178115
   -43.2541946653509 -46.0447266311017 -48.8352409662506 -51.6257336749382
   -54.4161995260862 -57.2066315276432 -59.9970201084913 -62.7873517989631
   -65.5776070108278 -68.3677561083132 -71.1577520115873 -73.9475151539897
   -76.7368996803683 -79.5256065726595 -82.3129129478863 -85.0965269883174
   -87.8637988392326
   cdo griddes: Processed 2 variables [0.01s 8324KB].