Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vhis 1888 1888

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 28.9603 	land 	CRU	25.13	1.15
msl 	  2.3598 	global 	COADS	11.69	0.20
qnet 	 20.1761 	ocean 	OAFLUX	14.24	1.41
tp 	 38.9711 	global 	CMAP	38.87	1.00
ewss 	  7.6809 	ocean 	DASILVA	4.03	1.90
nsss 	  5.9726 	ocean 	DASILVA	3.10	1.92
SST 	 29.4864 	ocean 	GISS	17.21	1.71
SSS 	  0.1291 	ocean 	levitus	0.22	0.58
SICE 	2281.4626 	ocean 	GISS	0.34	6710.18
T 	 27.1217 	zonal 	ERA40	38.89	0.69
U 	  3.5547 	zonal 	ERA40	12.07	0.29
V 	  2.4555 	zonal 	ERA40	8.25	0.29
Q 	 34.7838 	zonal 	ERA40	29.41	1.18

Total Performance Index is : 517.1153
Partial PI (atm only) is   : 0.6857

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vhis 1888 1888

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 27.3856 	land 	CRU	25.13	1.08
msl 	  2.3598 	global 	COADS	11.69	0.20
qnet 	 18.9829 	ocean 	OAFLUX	14.24	1.33
tp 	 38.9711 	global 	CMAP	38.87	1.00
ewss 	  7.6107 	ocean 	DASILVA	4.03	1.88
nsss 	  5.4332 	ocean 	DASILVA	3.10	1.75
SST 	 29.4864 	ocean 	GISS	17.21	1.71
SSS 	  0.1291 	ocean 	levitus	0.22	0.58
SICE 	2281.4626 	ocean 	GISS	0.34	6710.18
T 	 25.0427 	zonal 	ERA40	38.89	0.64
U 	  3.2207 	zonal 	ERA40	12.07	0.26
V 	  2.3459 	zonal 	ERA40	8.25	0.28
Q 	 27.2067 	zonal 	ERA40	29.41	0.92

Total Performance Index is : 517.0623
Partial PI (atm only) is   : 0.6257