Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1873 1873

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 27.8055 	land 	CRU	25.13	1.10
msl 	  2.1229 	global 	COADS	11.69	0.18
qnet 	 20.9498 	ocean 	OAFLUX	14.24	1.47
tp 	 31.4813 	global 	CMAP	38.87	0.80
ewss 	  7.1361 	ocean 	DASILVA	4.03	1.77
nsss 	  5.4201 	ocean 	DASILVA	3.10	1.74
SST 	 28.5052 	ocean 	GISS	17.21	1.65
SSS 	  0.1746 	ocean 	levitus	0.22	0.79
SICE 	2662.9744 	ocean 	GISS	0.34	7832.27
T 	 25.7733 	zonal 	ERA40	38.89	0.66
U 	  4.0262 	zonal 	ERA40	12.07	0.33
V 	  2.1498 	zonal 	ERA40	8.25	0.26
Q 	 31.5863 	zonal 	ERA40	29.41	1.07

Total Performance Index is : 603.3915
Partial PI (atm only) is   : 0.6285

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1873 1873

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 25.2352 	land 	CRU	25.13	1.00
msl 	  2.1229 	global 	COADS	11.69	0.18
qnet 	 19.8041 	ocean 	OAFLUX	14.24	1.39
tp 	 31.4813 	global 	CMAP	38.87	0.80
ewss 	  7.2288 	ocean 	DASILVA	4.03	1.79
nsss 	  4.8115 	ocean 	DASILVA	3.10	1.55
SST 	 28.5052 	ocean 	GISS	17.21	1.65
SSS 	  0.1746 	ocean 	levitus	0.22	0.79
SICE 	2662.9744 	ocean 	GISS	0.34	7832.27
T 	 23.4631 	zonal 	ERA40	38.89	0.60
U 	  3.6473 	zonal 	ERA40	12.07	0.30
V 	  2.0328 	zonal 	ERA40	8.25	0.24
Q 	 24.1730 	zonal 	ERA40	29.41	0.82

Total Performance Index is : 603.3369
Partial PI (atm only) is   : 0.5628