Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vaaa 1977 1977

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 22.2506 	land 	CRU	25.13	0.88
msl 	  1.6865 	global 	COADS	11.69	0.14
qnet 	 19.4795 	ocean 	OAFLUX	14.24	1.36
tp 	 23.7617 	global 	CMAP	38.87	0.61
ewss 	  9.5724 	ocean 	DASILVA	4.03	2.37
nsss 	  4.4982 	ocean 	DASILVA	3.10	1.45
T 	 10.0329 	zonal 	ERA40	38.89	0.25
U 	  2.2345 	zonal 	ERA40	12.07	0.18
V 	  1.8017 	zonal 	ERA40	8.25	0.21
Q 	 20.6743 	zonal 	ERA40	29.41	0.70

Total Performance Index is : 3.3961
Partial PI (atm only) is   : 5.4757

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vaaa 1977 1977

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 18.7212 	land 	CRU	25.13	0.74
msl 	  1.6865 	global 	COADS	11.69	0.14
qnet 	 18.3219 	ocean 	OAFLUX	14.24	1.28
tp 	 23.7617 	global 	CMAP	38.87	0.61
ewss 	 10.6923 	ocean 	DASILVA	4.03	2.65
nsss 	  3.9104 	ocean 	DASILVA	3.10	1.26
SST 	  3.9104 	ocean 	GISS	17.21	0
SSS 	  3.9104 	ocean 	levitus	0.22	0
SICE 	  3.9104 	ocean 	GISS	0.34	0
T 	  8.7833 	zonal 	ERA40	38.89	0.22
U 	  1.9631 	zonal 	ERA40	12.07	0.16
V 	  1.6907 	zonal 	ERA40	8.25	0.20
Q 	 13.8810 	zonal 	ERA40	29.41	0.47

Total Performance Index is : 0.5946
Partial PI (atm only) is   : 0.3628