Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1880 1880

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 25.5012 	land 	CRU	25.13	1.01
msl 	  2.2529 	global 	COADS	11.69	0.19
qnet 	 20.9166 	ocean 	OAFLUX	14.24	1.46
tp 	 29.0827 	global 	CMAP	38.87	0.74
ewss 	  8.4302 	ocean 	DASILVA	4.03	2.09
nsss 	  5.4308 	ocean 	DASILVA	3.10	1.75
SST 	 29.8599 	ocean 	GISS	17.21	1.73
SSS 	  0.1542 	ocean 	levitus	0.22	0.70
SICE 	2600.2426 	ocean 	GISS	0.34	7647.77
T 	 24.4686 	zonal 	ERA40	38.89	0.62
U 	  3.1642 	zonal 	ERA40	12.07	0.26
V 	  2.0868 	zonal 	ERA40	8.25	0.25
Q 	 32.4075 	zonal 	ERA40	29.41	1.10

Total Performance Index is : 589.2053
Partial PI (atm only) is   : 0.5957

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1880 1880

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 24.0504 	land 	CRU	25.13	0.95
msl 	  2.2529 	global 	COADS	11.69	0.19
qnet 	 19.7665 	ocean 	OAFLUX	14.24	1.38
tp 	 29.0827 	global 	CMAP	38.87	0.74
ewss 	  8.2622 	ocean 	DASILVA	4.03	2.05
nsss 	  4.7923 	ocean 	DASILVA	3.10	1.54
SST 	 29.8599 	ocean 	GISS	17.21	1.73
SSS 	  0.1542 	ocean 	levitus	0.22	0.70
SICE 	2600.2426 	ocean 	GISS	0.34	7647.77
T 	 22.2857 	zonal 	ERA40	38.89	0.57
U 	  2.8569 	zonal 	ERA40	12.07	0.23
V 	  1.9335 	zonal 	ERA40	8.25	0.23
Q 	 24.6966 	zonal 	ERA40	29.41	0.83

Total Performance Index is : 589.1469
Partial PI (atm only) is   : 0.5342