Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 2004 2004

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 15.8913 	land 	CRU	25.13	0.63
msl 	  2.9872 	global 	COADS	11.69	0.25
qnet 	 20.1061 	ocean 	OAFLUX	14.24	1.41
tp 	 39.5211 	global 	CMAP	38.87	1.01
ewss 	 10.2930 	ocean 	DASILVA	4.03	2.55
nsss 	  6.7452 	ocean 	DASILVA	3.10	2.17
SST 	 43.5462 	ocean 	GISS	17.21	2.53
SSS 	  0.1492 	ocean 	levitus	0.22	0.67
SICE 	1965.1633 	ocean 	GISS	0.34	5779.89
T 	 28.1060 	zonal 	ERA40	38.89	0.72
U 	  2.9152 	zonal 	ERA40	12.07	0.24
V 	  2.2800 	zonal 	ERA40	8.25	0.27
Q 	 24.0027 	zonal 	ERA40	29.41	0.81

Total Performance Index is : 445.6269
Partial PI (atm only) is   : 0.5614

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 2004 2004

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 12.1229 	land 	CRU	25.13	0.48
msl 	  2.9872 	global 	COADS	11.69	0.25
qnet 	 18.9669 	ocean 	OAFLUX	14.24	1.33
tp 	 39.5211 	global 	CMAP	38.87	1.01
ewss 	 11.1802 	ocean 	DASILVA	4.03	2.77
nsss 	  6.0122 	ocean 	DASILVA	3.10	1.93
SST 	 43.5462 	ocean 	GISS	17.21	2.53
SSS 	  0.1492 	ocean 	levitus	0.22	0.67
SICE 	1965.1633 	ocean 	GISS	0.34	5779.89
T 	 27.5237 	zonal 	ERA40	38.89	0.70
U 	  2.8143 	zonal 	ERA40	12.07	0.23
V 	  2.1983 	zonal 	ERA40	8.25	0.26
Q 	 18.5820 	zonal 	ERA40	29.41	0.63

Total Performance Index is : 445.5907
Partial PI (atm only) is   : 0.5085