Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1881 1881

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 28.1745 	land 	CRU	25.13	1.12
msl 	  3.1913 	global 	COADS	11.69	0.27
qnet 	 20.7278 	ocean 	OAFLUX	14.24	1.45
tp 	 37.9153 	global 	CMAP	38.87	0.97
ewss 	  7.9853 	ocean 	DASILVA	4.03	1.98
nsss 	  6.2880 	ocean 	DASILVA	3.10	2.02
SST 	 29.5967 	ocean 	GISS	17.21	1.71
SSS 	  0.1476 	ocean 	levitus	0.22	0.67
SICE 	2661.4299 	ocean 	GISS	0.34	7827.73
T 	 26.3977 	zonal 	ERA40	38.89	0.67
U 	  3.8639 	zonal 	ERA40	12.07	0.32
V 	  2.9722 	zonal 	ERA40	8.25	0.36
Q 	 32.7657 	zonal 	ERA40	29.41	1.11

Total Performance Index is : 603.1061
Partial PI (atm only) is   : 0.6885

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1881 1881

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 28.1452 	land 	CRU	25.13	1.11
msl 	  3.1913 	global 	COADS	11.69	0.27
qnet 	 19.5302 	ocean 	OAFLUX	14.24	1.37
tp 	 37.9153 	global 	CMAP	38.87	0.97
ewss 	  7.7997 	ocean 	DASILVA	4.03	1.93
nsss 	  5.3188 	ocean 	DASILVA	3.10	1.71
SST 	 29.5967 	ocean 	GISS	17.21	1.71
SSS 	  0.1476 	ocean 	levitus	0.22	0.67
SICE 	2661.4299 	ocean 	GISS	0.34	7827.73
T 	 24.1951 	zonal 	ERA40	38.89	0.62
U 	  3.5885 	zonal 	ERA40	12.07	0.29
V 	  2.8642 	zonal 	ERA40	8.25	0.34
Q 	 25.2737 	zonal 	ERA40	29.41	0.85

Total Performance Index is : 603.0438
Partial PI (atm only) is   : 0.6357