Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
caaa 1979 1979

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 21.0626 	land 	CRU	25.13	0.83
msl 	  1.7555 	global 	COADS	11.69	0.15
qnet 	 20.6185 	ocean 	OAFLUX	14.24	1.44
tp 	 25.3662 	global 	CMAP	38.87	0.65
ewss 	 11.2135 	ocean 	DASILVA	4.03	2.78
nsss 	  4.7756 	ocean 	DASILVA	3.10	1.54
T 	 10.5625 	zonal 	ERA40	38.89	0.27
U 	  4.1555 	zonal 	ERA40	12.07	0.34
V 	  3.0076 	zonal 	ERA40	8.25	0.36
Q 	 21.1802 	zonal 	ERA40	29.41	0.72

Total Performance Index is : 3.4676
Partial PI (atm only) is   : 5.4785

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
caaa 1979 1979

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 18.1661 	land 	CRU	25.13	0.72
msl 	  1.7555 	global 	COADS	11.69	0.15
qnet 	 19.4839 	ocean 	OAFLUX	14.24	1.36
tp 	 25.3662 	global 	CMAP	38.87	0.65
ewss 	 13.2329 	ocean 	DASILVA	4.03	3.28
nsss 	  4.1663 	ocean 	DASILVA	3.10	1.34
SST 	  4.1663 	ocean 	GISS	17.21	0
SSS 	  4.1663 	ocean 	levitus	0.22	0
SICE 	  4.1663 	ocean 	GISS	0.34	0
T 	  9.2701 	zonal 	ERA40	38.89	0.23
U 	  4.0140 	zonal 	ERA40	12.07	0.33
V 	  2.8891 	zonal 	ERA40	8.25	0.35
Q 	 14.4606 	zonal 	ERA40	29.41	0.49

Total Performance Index is : 0.6846
Partial PI (atm only) is   : 0.4171