Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vaaa 2014 2014

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 15.7194 	land 	CRU	25.13	0.62
msl 	  1.5848 	global 	COADS	11.69	0.13
qnet 	 20.3865 	ocean 	OAFLUX	14.24	1.43
tp 	 24.4355 	global 	CMAP	38.87	0.62
ewss 	  9.8276 	ocean 	DASILVA	4.03	2.43
nsss 	  4.4338 	ocean 	DASILVA	3.10	1.43
T 	  6.0045 	zonal 	ERA40	38.89	0.15
U 	  2.1615 	zonal 	ERA40	12.07	0.17
V 	  1.9912 	zonal 	ERA40	8.25	0.24
Q 	 13.8917 	zonal 	ERA40	29.41	0.47

Total Performance Index is : 3.3607
Partial PI (atm only) is   : 5.4057

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vaaa 2014 2014

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 12.4418 	land 	CRU	25.13	0.49
msl 	  1.5848 	global 	COADS	11.69	0.13
qnet 	 19.1803 	ocean 	OAFLUX	14.24	1.34
tp 	 24.4355 	global 	CMAP	38.87	0.62
ewss 	 10.8451 	ocean 	DASILVA	4.03	2.69
nsss 	  4.0620 	ocean 	DASILVA	3.10	1.31
SST 	  4.0620 	ocean 	GISS	17.21	0
SSS 	  4.0620 	ocean 	levitus	0.22	0
SICE 	  4.0620 	ocean 	GISS	0.34	0
T 	  5.4986 	zonal 	ERA40	38.89	0.14
U 	  1.9659 	zonal 	ERA40	12.07	0.16
V 	  1.8490 	zonal 	ERA40	8.25	0.22
Q 	  7.7623 	zonal 	ERA40	29.41	0.26

Total Performance Index is : 0.5661
Partial PI (atm only) is   : 0.2885