Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 2013 2013

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 16.0286 	land 	CRU	25.13	0.63
msl 	  2.4283 	global 	COADS	11.69	0.20
qnet 	 19.6610 	ocean 	OAFLUX	14.24	1.38
tp 	 35.4205 	global 	CMAP	38.87	0.91
ewss 	  8.7638 	ocean 	DASILVA	4.03	2.17
nsss 	  6.2554 	ocean 	DASILVA	3.10	2.01
SST 	 43.9967 	ocean 	GISS	17.21	2.55
SSS 	  0.1469 	ocean 	levitus	0.22	0.66
SICE 	1683.7585 	ocean 	GISS	0.34	4952.23
T 	 30.9917 	zonal 	ERA40	38.89	0.79
U 	  3.2753 	zonal 	ERA40	12.07	0.27
V 	  2.7252 	zonal 	ERA40	8.25	0.33
Q 	 26.9071 	zonal 	ERA40	29.41	0.91

Total Performance Index is : 381.9261
Partial PI (atm only) is   : 0.5771

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 2013 2013

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 12.7086 	land 	CRU	25.13	0.50
msl 	  2.4283 	global 	COADS	11.69	0.20
qnet 	 18.4797 	ocean 	OAFLUX	14.24	1.29
tp 	 35.4205 	global 	CMAP	38.87	0.91
ewss 	  9.5901 	ocean 	DASILVA	4.03	2.37
nsss 	  5.8720 	ocean 	DASILVA	3.10	1.89
SST 	 43.9967 	ocean 	GISS	17.21	2.55
SSS 	  0.1469 	ocean 	levitus	0.22	0.66
SICE 	1683.7585 	ocean 	GISS	0.34	4952.23
T 	 30.4900 	zonal 	ERA40	38.89	0.78
U 	  3.1536 	zonal 	ERA40	12.07	0.26
V 	  2.6474 	zonal 	ERA40	8.25	0.32
Q 	 21.6962 	zonal 	ERA40	29.41	0.73

Total Performance Index is : 381.8992
Partial PI (atm only) is   : 0.5285