Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1895 1895

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 38.0849 	land 	CRU	25.13	1.51
msl 	  4.1138 	global 	COADS	11.69	0.35
qnet 	 20.1759 	ocean 	OAFLUX	14.24	1.41
tp 	 37.9266 	global 	CMAP	38.87	0.97
ewss 	  8.2664 	ocean 	DASILVA	4.03	2.05
nsss 	  5.4524 	ocean 	DASILVA	3.10	1.75
SST 	 34.3822 	ocean 	GISS	17.21	1.99
SSS 	  0.1800 	ocean 	levitus	0.22	0.81
SICE 	2839.0033 	ocean 	GISS	0.34	8350.00
T 	 32.5487 	zonal 	ERA40	38.89	0.83
U 	  6.1241 	zonal 	ERA40	12.07	0.50
V 	  3.4825 	zonal 	ERA40	8.25	0.42
Q 	 40.9929 	zonal 	ERA40	29.41	1.39

Total Performance Index is : 643.3830
Partial PI (atm only) is   : 0.8528

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1895 1895

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 37.6808 	land 	CRU	25.13	1.49
msl 	  4.1138 	global 	COADS	11.69	0.35
qnet 	 18.9336 	ocean 	OAFLUX	14.24	1.32
tp 	 37.9266 	global 	CMAP	38.87	0.97
ewss 	  8.6921 	ocean 	DASILVA	4.03	2.15
nsss 	  5.1463 	ocean 	DASILVA	3.10	1.66
SST 	 34.3822 	ocean 	GISS	17.21	1.99
SSS 	  0.1800 	ocean 	levitus	0.22	0.81
SICE 	2839.0033 	ocean 	GISS	0.34	8350.00
T 	 30.3851 	zonal 	ERA40	38.89	0.78
U 	  5.7183 	zonal 	ERA40	12.07	0.47
V 	  3.3309 	zonal 	ERA40	8.25	0.40
Q 	 33.3749 	zonal 	ERA40	29.41	1.13

Total Performance Index is : 643.3476
Partial PI (atm only) is   : 0.7985