Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1905 1905

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 32.0435 	land 	CRU	25.13	1.27
msl 	  2.8951 	global 	COADS	11.69	0.24
qnet 	 20.0318 	ocean 	OAFLUX	14.24	1.40
tp 	 36.5016 	global 	CMAP	38.87	0.93
ewss 	  7.7584 	ocean 	DASILVA	4.03	1.92
nsss 	  6.2544 	ocean 	DASILVA	3.10	2.01
SST 	 30.8250 	ocean 	GISS	17.21	1.79
SSS 	  0.1689 	ocean 	levitus	0.22	0.76
SICE 	2804.4397 	ocean 	GISS	0.34	8248.35
T 	 30.4786 	zonal 	ERA40	38.89	0.78
U 	  4.1064 	zonal 	ERA40	12.07	0.34
V 	  2.9688 	zonal 	ERA40	8.25	0.35
Q 	 39.3111 	zonal 	ERA40	29.41	1.33

Total Performance Index is : 635.4976
Partial PI (atm only) is   : 0.7485

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1905 1905

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 31.3214 	land 	CRU	25.13	1.24
msl 	  2.8951 	global 	COADS	11.69	0.24
qnet 	 18.8083 	ocean 	OAFLUX	14.24	1.32
tp 	 36.5016 	global 	CMAP	38.87	0.93
ewss 	  8.1994 	ocean 	DASILVA	4.03	2.03
nsss 	  5.1588 	ocean 	DASILVA	3.10	1.66
SST 	 30.8250 	ocean 	GISS	17.21	1.79
SSS 	  0.1689 	ocean 	levitus	0.22	0.76
SICE 	2804.4397 	ocean 	GISS	0.34	8248.35
T 	 28.3918 	zonal 	ERA40	38.89	0.73
U 	  3.7487 	zonal 	ERA40	12.07	0.31
V 	  2.8628 	zonal 	ERA40	8.25	0.34
Q 	 31.7364 	zonal 	ERA40	29.41	1.07

Total Performance Index is : 635.4438
Partial PI (atm only) is   : 0.6942