Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vaaa 1971 1971

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 29.5367 	land 	CRU	25.13	1.17
msl 	  2.1517 	global 	COADS	11.69	0.18
qnet 	 19.1059 	ocean 	OAFLUX	14.24	1.34
tp 	 22.9363 	global 	CMAP	38.87	0.59
ewss 	  8.6958 	ocean 	DASILVA	4.03	2.15
nsss 	  4.4438 	ocean 	DASILVA	3.10	1.43
T 	 14.2511 	zonal 	ERA40	38.89	0.36
U 	  3.7775 	zonal 	ERA40	12.07	0.31
V 	  1.8919 	zonal 	ERA40	8.25	0.22
Q 	 19.9921 	zonal 	ERA40	29.41	0.67

Total Performance Index is : 3.4169
Partial PI (atm only) is   : 5.5157

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vaaa 1971 1971

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 25.3210 	land 	CRU	25.13	1.00
msl 	  2.1517 	global 	COADS	11.69	0.18
qnet 	 17.8431 	ocean 	OAFLUX	14.24	1.25
tp 	 22.9363 	global 	CMAP	38.87	0.59
ewss 	  9.0221 	ocean 	DASILVA	4.03	2.23
nsss 	  4.0005 	ocean 	DASILVA	3.10	1.29
SST 	  4.0005 	ocean 	GISS	17.21	0
SSS 	  4.0005 	ocean 	levitus	0.22	0
SICE 	  4.0005 	ocean 	GISS	0.34	0
T 	 13.3222 	zonal 	ERA40	38.89	0.34
U 	  3.3354 	zonal 	ERA40	12.07	0.27
V 	  1.7739 	zonal 	ERA40	8.25	0.21
Q 	 15.7260 	zonal 	ERA40	29.41	0.53

Total Performance Index is : 0.6069
Partial PI (atm only) is   : 0.4457