Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vaaa 2015 2015

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 15.4423 	land 	CRU	25.13	0.61
msl 	  1.4853 	global 	COADS	11.69	0.12
qnet 	 18.9302 	ocean 	OAFLUX	14.24	1.32
tp 	 25.0342 	global 	CMAP	38.87	0.64
ewss 	  9.2478 	ocean 	DASILVA	4.03	2.29
nsss 	  4.3835 	ocean 	DASILVA	3.10	1.41
T 	  6.5072 	zonal 	ERA40	38.89	0.16
U 	  2.1650 	zonal 	ERA40	12.07	0.17
V 	  1.9636 	zonal 	ERA40	8.25	0.23
Q 	 12.3468 	zonal 	ERA40	29.41	0.41

Total Performance Index is : 3.3353
Partial PI (atm only) is   : 5.3971

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vaaa 2015 2015

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 11.1689 	land 	CRU	25.13	0.44
msl 	  1.4853 	global 	COADS	11.69	0.12
qnet 	 17.7285 	ocean 	OAFLUX	14.24	1.24
tp 	 25.0342 	global 	CMAP	38.87	0.64
ewss 	 10.0417 	ocean 	DASILVA	4.03	2.49
nsss 	  4.2255 	ocean 	DASILVA	3.10	1.36
SST 	  4.2255 	ocean 	GISS	17.21	0
SSS 	  4.2255 	ocean 	levitus	0.22	0
SICE 	  4.2255 	ocean 	GISS	0.34	0
T 	  5.9856 	zonal 	ERA40	38.89	0.15
U 	  2.0244 	zonal 	ERA40	12.07	0.16
V 	  1.8462 	zonal 	ERA40	8.25	0.22
Q 	  6.3230 	zonal 	ERA40	29.41	0.21

Total Performance Index is : 0.5407
Partial PI (atm only) is   : 0.2771