Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
v585 2021 2021

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 15.7574 	land 	CRU	25.13	0.62
msl 	  1.7184 	global 	COADS	11.69	0.14
qnet 	 20.0543 	ocean 	OAFLUX	14.24	1.40
tp 	 36.7274 	global 	CMAP	38.87	0.94
ewss 	  8.2987 	ocean 	DASILVA	4.03	2.05
nsss 	  6.0408 	ocean 	DASILVA	3.10	1.94
SST 	 46.4049 	ocean 	GISS	17.21	2.69
SSS 	  0.1463 	ocean 	levitus	0.22	0.66
SICE 	1584.1517 	ocean 	GISS	0.34	4659.26
T 	 32.8621 	zonal 	ERA40	38.89	0.84
U 	  3.2154 	zonal 	ERA40	12.07	0.26
V 	  2.2940 	zonal 	ERA40	8.25	0.27
Q 	 27.5285 	zonal 	ERA40	29.41	0.93

Total Performance Index is : 359.3846
Partial PI (atm only) is   : 0.5714

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
v585 2021 2021

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 11.6596 	land 	CRU	25.13	0.46
msl 	  1.7184 	global 	COADS	11.69	0.14
qnet 	 18.8976 	ocean 	OAFLUX	14.24	1.32
tp 	 36.7274 	global 	CMAP	38.87	0.94
ewss 	  8.5596 	ocean 	DASILVA	4.03	2.12
nsss 	  5.3602 	ocean 	DASILVA	3.10	1.72
SST 	 46.4049 	ocean 	GISS	17.21	2.69
SSS 	  0.1463 	ocean 	levitus	0.22	0.66
SICE 	1584.1517 	ocean 	GISS	0.34	4659.26
T 	 32.4726 	zonal 	ERA40	38.89	0.83
U 	  3.0963 	zonal 	ERA40	12.07	0.25
V 	  2.1746 	zonal 	ERA40	8.25	0.26
Q 	 22.4830 	zonal 	ERA40	29.41	0.76

Total Performance Index is : 359.3392
Partial PI (atm only) is   : 0.5200