Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1868 1868

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 25.7541 	land 	CRU	25.13	1.02
msl 	  2.8095 	global 	COADS	11.69	0.24
qnet 	 20.8652 	ocean 	OAFLUX	14.24	1.46
tp 	 34.7930 	global 	CMAP	38.87	0.89
ewss 	  7.8193 	ocean 	DASILVA	4.03	1.94
nsss 	  5.7047 	ocean 	DASILVA	3.10	1.84
SST 	 29.4170 	ocean 	GISS	17.21	1.70
SSS 	  0.1600 	ocean 	levitus	0.22	0.72
SICE 	2747.2377 	ocean 	GISS	0.34	8080.11
T 	 24.3836 	zonal 	ERA40	38.89	0.62
U 	  3.5135 	zonal 	ERA40	12.07	0.29
V 	  2.8931 	zonal 	ERA40	8.25	0.35
Q 	 34.3255 	zonal 	ERA40	29.41	1.16

Total Performance Index is : 622.4876
Partial PI (atm only) is   : 0.6528

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1868 1868

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 25.1984 	land 	CRU	25.13	1.00
msl 	  2.8095 	global 	COADS	11.69	0.24
qnet 	 19.6877 	ocean 	OAFLUX	14.24	1.38
tp 	 34.7930 	global 	CMAP	38.87	0.89
ewss 	  8.9097 	ocean 	DASILVA	4.03	2.21
nsss 	  5.0616 	ocean 	DASILVA	3.10	1.63
SST 	 29.4170 	ocean 	GISS	17.21	1.70
SSS 	  0.1600 	ocean 	levitus	0.22	0.72
SICE 	2747.2377 	ocean 	GISS	0.34	8080.11
T 	 21.9959 	zonal 	ERA40	38.89	0.56
U 	  3.2215 	zonal 	ERA40	12.07	0.26
V 	  2.7652 	zonal 	ERA40	8.25	0.33
Q 	 26.6611 	zonal 	ERA40	29.41	0.90

Total Performance Index is : 622.4561
Partial PI (atm only) is   : 0.5971