Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
caaa 1990 1990

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 19.1307 	land 	CRU	25.13	0.76
msl 	  1.5457 	global 	COADS	11.69	0.13
qnet 	 20.1469 	ocean 	OAFLUX	14.24	1.41
tp 	 23.6015 	global 	CMAP	38.87	0.60
ewss 	  9.4845 	ocean 	DASILVA	4.03	2.35
nsss 	  4.4169 	ocean 	DASILVA	3.10	1.42
T 	  7.3305 	zonal 	ERA40	38.89	0.18
U 	  2.2144 	zonal 	ERA40	12.07	0.18
V 	  1.9652 	zonal 	ERA40	8.25	0.23
Q 	 17.5733 	zonal 	ERA40	29.41	0.59

Total Performance Index is : 3.3730
Partial PI (atm only) is   : 5.4400

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
caaa 1990 1990

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 16.0868 	land 	CRU	25.13	0.64
msl 	  1.5457 	global 	COADS	11.69	0.13
qnet 	 18.9388 	ocean 	OAFLUX	14.24	1.32
tp 	 23.6015 	global 	CMAP	38.87	0.60
ewss 	 10.5468 	ocean 	DASILVA	4.03	2.61
nsss 	  4.0832 	ocean 	DASILVA	3.10	1.31
SST 	  4.0832 	ocean 	GISS	17.21	0
SSS 	  4.0832 	ocean 	levitus	0.22	0
SICE 	  4.0832 	ocean 	GISS	0.34	0
T 	  6.4397 	zonal 	ERA40	38.89	0.16
U 	  1.9757 	zonal 	ERA40	12.07	0.16
V 	  1.8467 	zonal 	ERA40	8.25	0.22
Q 	 11.0562 	zonal 	ERA40	29.41	0.37

Total Performance Index is : 0.5784
Partial PI (atm only) is   : 0.3257