Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vaaa 1981 1981

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 20.4506 	land 	CRU	25.13	0.81
msl 	  2.4631 	global 	COADS	11.69	0.21
qnet 	 20.0835 	ocean 	OAFLUX	14.24	1.41
tp 	 23.4278 	global 	CMAP	38.87	0.60
ewss 	 11.3215 	ocean 	DASILVA	4.03	2.80
nsss 	  5.0162 	ocean 	DASILVA	3.10	1.61
T 	  8.8139 	zonal 	ERA40	38.89	0.22
U 	  3.6795 	zonal 	ERA40	12.07	0.30
V 	  1.8834 	zonal 	ERA40	8.25	0.22
Q 	 19.1464 	zonal 	ERA40	29.41	0.65

Total Performance Index is : 3.4484
Partial PI (atm only) is   : 5.4671

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vaaa 1981 1981

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 16.6213 	land 	CRU	25.13	0.66
msl 	  2.4631 	global 	COADS	11.69	0.21
qnet 	 18.8839 	ocean 	OAFLUX	14.24	1.32
tp 	 23.4278 	global 	CMAP	38.87	0.60
ewss 	 11.5887 	ocean 	DASILVA	4.03	2.87
nsss 	  4.5980 	ocean 	DASILVA	3.10	1.48
SST 	  4.5980 	ocean 	GISS	17.21	0
SSS 	  4.5980 	ocean 	levitus	0.22	0
SICE 	  4.5980 	ocean 	GISS	0.34	0
T 	  7.5899 	zonal 	ERA40	38.89	0.19
U 	  3.4165 	zonal 	ERA40	12.07	0.28
V 	  1.7609 	zonal 	ERA40	8.25	0.21
Q 	 12.5690 	zonal 	ERA40	29.41	0.42

Total Performance Index is : 0.6338
Partial PI (atm only) is   : 0.3671