Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
c4co 1938 1938

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	214.8339 	land 	CRU	25.13	8.54
msl 	  4.8807 	global 	COADS	11.69	0.41
qnet 	 21.9117 	ocean 	OAFLUX	14.24	1.53
tp 	 70.9821 	global 	CMAP	38.87	1.82
ewss 	 10.1563 	ocean 	DASILVA	4.03	2.52
nsss 	  6.6178 	ocean 	DASILVA	3.10	2.13
SST 	339.8276 	ocean 	GISS	17.21	19.74
SSS 	  0.3303 	ocean 	levitus	0.22	1.50
SICE 	 53.9672 	ocean 	GISS	0.34	158.72
T 	427.8233 	zonal 	ERA40	38.89	11.00
U 	  9.3811 	zonal 	ERA40	12.07	0.77
V 	  4.4174 	zonal 	ERA40	8.25	0.53
Q 	413.5318 	zonal 	ERA40	29.41	14.06

Total Performance Index is : 17.1746
Partial PI (atm only) is   : 5.3042

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
c4co 1938 1938

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	165.4054 	land 	CRU	25.13	6.58
msl 	  4.8807 	global 	COADS	11.69	0.41
qnet 	 20.8182 	ocean 	OAFLUX	14.24	1.46
tp 	 70.9821 	global 	CMAP	38.87	1.82
ewss 	 11.0150 	ocean 	DASILVA	4.03	2.73
nsss 	  6.1555 	ocean 	DASILVA	3.10	1.98
SST 	339.8276 	ocean 	GISS	17.21	19.74
SSS 	  0.3303 	ocean 	levitus	0.22	1.50
SICE 	 53.9672 	ocean 	GISS	0.34	158.72
T 	426.7777 	zonal 	ERA40	38.89	10.97
U 	  8.4487 	zonal 	ERA40	12.07	0.69
V 	  4.3329 	zonal 	ERA40	8.25	0.52
Q 	411.5978 	zonal 	ERA40	29.41	13.99

Total Performance Index is : 17.0084
Partial PI (atm only) is   : 4.9971