Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1974 1974

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 17.0976 	land 	CRU	25.13	0.68
msl 	  2.0144 	global 	COADS	11.69	0.17
qnet 	 21.1142 	ocean 	OAFLUX	14.24	1.48
tp 	 39.7758 	global 	CMAP	38.87	1.02
ewss 	  8.8852 	ocean 	DASILVA	4.03	2.20
nsss 	  5.8843 	ocean 	DASILVA	3.10	1.89
SST 	 30.4048 	ocean 	GISS	17.21	1.76
SSS 	  0.1326 	ocean 	levitus	0.22	0.60
SICE 	2176.8613 	ocean 	GISS	0.34	6402.53
T 	 20.3608 	zonal 	ERA40	38.89	0.52
U 	  3.1180 	zonal 	ERA40	12.07	0.25
V 	  2.7351 	zonal 	ERA40	8.25	0.33
Q 	 25.9456 	zonal 	ERA40	29.41	0.88

Total Performance Index is : 493.4084
Partial PI (atm only) is   : 0.5500

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1974 1974

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 15.7516 	land 	CRU	25.13	0.62
msl 	  2.0144 	global 	COADS	11.69	0.17
qnet 	 19.9755 	ocean 	OAFLUX	14.24	1.40
tp 	 39.7758 	global 	CMAP	38.87	1.02
ewss 	  9.9582 	ocean 	DASILVA	4.03	2.47
nsss 	  5.7447 	ocean 	DASILVA	3.10	1.85
SST 	 30.4048 	ocean 	GISS	17.21	1.76
SSS 	  0.1326 	ocean 	levitus	0.22	0.60
SICE 	2176.8613 	ocean 	GISS	0.34	6402.53
T 	 19.1211 	zonal 	ERA40	38.89	0.49
U 	  2.9698 	zonal 	ERA40	12.07	0.24
V 	  2.6109 	zonal 	ERA40	8.25	0.31
Q 	 19.8415 	zonal 	ERA40	29.41	0.67

Total Performance Index is : 493.3946
Partial PI (atm only) is   : 0.5028