Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vhis 1968 1968

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 28.9431 	land 	CRU	25.13	1.15
msl 	  3.0818 	global 	COADS	11.69	0.26
qnet 	 20.6252 	ocean 	OAFLUX	14.24	1.44
tp 	 30.9743 	global 	CMAP	38.87	0.79
ewss 	  7.2005 	ocean 	DASILVA	4.03	1.78
nsss 	  5.8320 	ocean 	DASILVA	3.10	1.88
SST 	 35.8724 	ocean 	GISS	17.21	2.08
SSS 	  0.1503 	ocean 	levitus	0.22	0.68
SICE 	2755.6448 	ocean 	GISS	0.34	8104.83
T 	 28.6368 	zonal 	ERA40	38.89	0.73
U 	  3.7915 	zonal 	ERA40	12.07	0.31
V 	  2.5660 	zonal 	ERA40	8.25	0.31
Q 	 36.7534 	zonal 	ERA40	29.41	1.24

Total Performance Index is : 624.4215
Partial PI (atm only) is   : 0.6842

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vhis 1968 1968

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 28.9680 	land 	CRU	25.13	1.15
msl 	  3.0818 	global 	COADS	11.69	0.26
qnet 	 19.4552 	ocean 	OAFLUX	14.24	1.36
tp 	 30.9743 	global 	CMAP	38.87	0.79
ewss 	  7.3858 	ocean 	DASILVA	4.03	1.83
nsss 	  5.3292 	ocean 	DASILVA	3.10	1.71
SST 	 35.8724 	ocean 	GISS	17.21	2.08
SSS 	  0.1503 	ocean 	levitus	0.22	0.68
SICE 	2755.6448 	ocean 	GISS	0.34	8104.83
T 	 27.0024 	zonal 	ERA40	38.89	0.69
U 	  3.5574 	zonal 	ERA40	12.07	0.29
V 	  2.4372 	zonal 	ERA40	8.25	0.29
Q 	 29.7453 	zonal 	ERA40	29.41	1.01

Total Performance Index is : 624.3823
Partial PI (atm only) is   : 0.6400