Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vaaa 1970 1970

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 22.9752 	land 	CRU	25.13	0.91
msl 	  1.6116 	global 	COADS	11.69	0.13
qnet 	 19.4981 	ocean 	OAFLUX	14.24	1.36
tp 	 24.9804 	global 	CMAP	38.87	0.64
ewss 	  9.3318 	ocean 	DASILVA	4.03	2.31
nsss 	  5.2787 	ocean 	DASILVA	3.10	1.70
T 	  6.8970 	zonal 	ERA40	38.89	0.17
U 	  2.1517 	zonal 	ERA40	12.07	0.17
V 	  2.2184 	zonal 	ERA40	8.25	0.26
Q 	 11.1616 	zonal 	ERA40	29.41	0.37

Total Performance Index is : 3.3861
Partial PI (atm only) is   : 5.4357

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vaaa 1970 1970

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 17.7997 	land 	CRU	25.13	0.70
msl 	  1.6116 	global 	COADS	11.69	0.13
qnet 	 18.2590 	ocean 	OAFLUX	14.24	1.28
tp 	 24.9804 	global 	CMAP	38.87	0.64
ewss 	 10.6007 	ocean 	DASILVA	4.03	2.63
nsss 	  4.8919 	ocean 	DASILVA	3.10	1.57
SST 	  4.8919 	ocean 	GISS	17.21	0
SSS 	  4.8919 	ocean 	levitus	0.22	0
SICE 	  4.8919 	ocean 	GISS	0.34	0
T 	  6.3075 	zonal 	ERA40	38.89	0.16
U 	  2.0325 	zonal 	ERA40	12.07	0.16
V 	  2.0771 	zonal 	ERA40	8.25	0.25
Q 	 10.2680 	zonal 	ERA40	29.41	0.34

Total Performance Index is : 0.6046
Partial PI (atm only) is   : 0.3400