Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1865 1865

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 28.5200 	land 	CRU	25.13	1.13
msl 	  2.8989 	global 	COADS	11.69	0.24
qnet 	 21.4092 	ocean 	OAFLUX	14.24	1.50
tp 	 32.6496 	global 	CMAP	38.87	0.83
ewss 	  7.5481 	ocean 	DASILVA	4.03	1.87
nsss 	  5.9736 	ocean 	DASILVA	3.10	1.92
SST 	 29.7382 	ocean 	GISS	17.21	1.72
SSS 	  0.1513 	ocean 	levitus	0.22	0.68
SICE 	2819.3122 	ocean 	GISS	0.34	8292.09
T 	 27.4780 	zonal 	ERA40	38.89	0.70
U 	  4.2770 	zonal 	ERA40	12.07	0.35
V 	  2.6681 	zonal 	ERA40	8.25	0.32
Q 	 35.8964 	zonal 	ERA40	29.41	1.22

Total Performance Index is : 638.8130
Partial PI (atm only) is   : 0.6842

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1865 1865

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 27.0631 	land 	CRU	25.13	1.07
msl 	  2.8989 	global 	COADS	11.69	0.24
qnet 	 20.2801 	ocean 	OAFLUX	14.24	1.42
tp 	 32.6496 	global 	CMAP	38.87	0.83
ewss 	  7.7985 	ocean 	DASILVA	4.03	1.93
nsss 	  5.2439 	ocean 	DASILVA	3.10	1.69
SST 	 29.7382 	ocean 	GISS	17.21	1.72
SSS 	  0.1513 	ocean 	levitus	0.22	0.68
SICE 	2819.3122 	ocean 	GISS	0.34	8292.09
T 	 25.1888 	zonal 	ERA40	38.89	0.64
U 	  3.9671 	zonal 	ERA40	12.07	0.32
V 	  2.5280 	zonal 	ERA40	8.25	0.30
Q 	 28.3552 	zonal 	ERA40	29.41	0.96

Total Performance Index is : 638.7607
Partial PI (atm only) is   : 0.6228