Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
caaa 2017 2017

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 14.2950 	land 	CRU	25.13	0.56
msl 	  1.7836 	global 	COADS	11.69	0.15
qnet 	 20.2014 	ocean 	OAFLUX	14.24	1.41
tp 	 26.7647 	global 	CMAP	38.87	0.68
ewss 	 10.6846 	ocean 	DASILVA	4.03	2.65
nsss 	  4.7117 	ocean 	DASILVA	3.10	1.51
T 	  7.6408 	zonal 	ERA40	38.89	0.19
U 	  3.4353 	zonal 	ERA40	12.07	0.28
V 	  2.2312 	zonal 	ERA40	8.25	0.27
Q 	 12.2340 	zonal 	ERA40	29.41	0.41

Total Performance Index is : 3.3930
Partial PI (atm only) is   : 5.4000

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
caaa 2017 2017

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 11.3210 	land 	CRU	25.13	0.45
msl 	  1.7836 	global 	COADS	11.69	0.15
qnet 	 19.0638 	ocean 	OAFLUX	14.24	1.33
tp 	 26.7647 	global 	CMAP	38.87	0.68
ewss 	 11.8896 	ocean 	DASILVA	4.03	2.95
nsss 	  4.3795 	ocean 	DASILVA	3.10	1.41
SST 	  4.3795 	ocean 	GISS	17.21	0
SSS 	  4.3795 	ocean 	levitus	0.22	0
SICE 	  4.3795 	ocean 	GISS	0.34	0
T 	  7.2004 	zonal 	ERA40	38.89	0.18
U 	  3.3184 	zonal 	ERA40	12.07	0.27
V 	  2.1191 	zonal 	ERA40	8.25	0.25
Q 	  6.4307 	zonal 	ERA40	29.41	0.21

Total Performance Index is : 0.6061
Partial PI (atm only) is   : 0.3128