Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1963 1963

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 24.2617 	land 	CRU	25.13	0.96
msl 	  2.0065 	global 	COADS	11.69	0.17
qnet 	 22.1453 	ocean 	OAFLUX	14.24	1.55
tp 	 38.2704 	global 	CMAP	38.87	0.98
ewss 	  7.9951 	ocean 	DASILVA	4.03	1.98
nsss 	  5.6536 	ocean 	DASILVA	3.10	1.82
SST 	 32.5155 	ocean 	GISS	17.21	1.88
SSS 	  0.1467 	ocean 	levitus	0.22	0.66
SICE 	2246.4072 	ocean 	GISS	0.34	6607.08
T 	 23.2410 	zonal 	ERA40	38.89	0.59
U 	  4.4706 	zonal 	ERA40	12.07	0.37
V 	  2.6124 	zonal 	ERA40	8.25	0.31
Q 	 29.4110 	zonal 	ERA40	29.41	1.00

Total Performance Index is : 509.1807
Partial PI (atm only) is   : 0.6257

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1963 1963

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 20.7347 	land 	CRU	25.13	0.82
msl 	  2.0065 	global 	COADS	11.69	0.17
qnet 	 21.0223 	ocean 	OAFLUX	14.24	1.47
tp 	 38.2704 	global 	CMAP	38.87	0.98
ewss 	  8.8523 	ocean 	DASILVA	4.03	2.19
nsss 	  5.4561 	ocean 	DASILVA	3.10	1.76
SST 	 32.5155 	ocean 	GISS	17.21	1.88
SSS 	  0.1467 	ocean 	levitus	0.22	0.66
SICE 	2246.4072 	ocean 	GISS	0.34	6607.08
T 	 21.0734 	zonal 	ERA40	38.89	0.54
U 	  4.0966 	zonal 	ERA40	12.07	0.33
V 	  2.4719 	zonal 	ERA40	8.25	0.29
Q 	 22.8495 	zonal 	ERA40	29.41	0.77

Total Performance Index is : 509.1492
Partial PI (atm only) is   : 0.5571