Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
c4co 1940 1940

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	277.2912 	land 	CRU	25.13	11.03
msl 	  4.4067 	global 	COADS	11.69	0.37
qnet 	 21.4678 	ocean 	OAFLUX	14.24	1.50
tp 	 64.7537 	global 	CMAP	38.87	1.66
ewss 	  9.6366 	ocean 	DASILVA	4.03	2.39
nsss 	  6.3382 	ocean 	DASILVA	3.10	2.04
SST 	374.6683 	ocean 	GISS	17.21	21.77
SSS 	  0.3428 	ocean 	levitus	0.22	1.55
SICE 	 33.2147 	ocean 	GISS	0.34	97.69
T 	501.6438 	zonal 	ERA40	38.89	12.89
U 	  7.6010 	zonal 	ERA40	12.07	0.62
V 	  4.4076 	zonal 	ERA40	8.25	0.53
Q 	513.5248 	zonal 	ERA40	29.41	17.46

Total Performance Index is : 13.1923
Partial PI (atm only) is   : 6.3657

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
c4co 1940 1940

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	209.6736 	land 	CRU	25.13	8.34
msl 	  4.4067 	global 	COADS	11.69	0.37
qnet 	 20.4235 	ocean 	OAFLUX	14.24	1.43
tp 	 64.7537 	global 	CMAP	38.87	1.66
ewss 	 10.5084 	ocean 	DASILVA	4.03	2.60
nsss 	  5.5954 	ocean 	DASILVA	3.10	1.80
SST 	374.6683 	ocean 	GISS	17.21	21.77
SSS 	  0.3428 	ocean 	levitus	0.22	1.55
SICE 	 33.2147 	ocean 	GISS	0.34	97.69
T 	500.4038 	zonal 	ERA40	38.89	12.86
U 	  6.4711 	zonal 	ERA40	12.07	0.53
V 	  4.3219 	zonal 	ERA40	8.25	0.52
Q 	511.5381 	zonal 	ERA40	29.41	17.39

Total Performance Index is : 12.9623
Partial PI (atm only) is   : 5.9528