Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
c4co 1952 1952

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	290.2244 	land 	CRU	25.13	11.54
msl 	  3.7875 	global 	COADS	11.69	0.32
qnet 	 22.3267 	ocean 	OAFLUX	14.24	1.56
tp 	 60.4172 	global 	CMAP	38.87	1.55
ewss 	  9.4049 	ocean 	DASILVA	4.03	2.33
nsss 	  6.7593 	ocean 	DASILVA	3.10	2.18
SST 	385.8984 	ocean 	GISS	17.21	22.42
SSS 	  0.3388 	ocean 	levitus	0.22	1.54
SICE 	 37.7169 	ocean 	GISS	0.34	110.93
T 	527.7322 	zonal 	ERA40	38.89	13.56
U 	  9.3289 	zonal 	ERA40	12.07	0.77
V 	  3.8039 	zonal 	ERA40	8.25	0.46
Q 	532.9161 	zonal 	ERA40	29.41	18.12

Total Performance Index is : 14.4061
Partial PI (atm only) is   : 6.6171

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
c4co 1952 1952

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	224.2955 	land 	CRU	25.13	8.92
msl 	  3.7875 	global 	COADS	11.69	0.32
qnet 	 21.2889 	ocean 	OAFLUX	14.24	1.49
tp 	 60.4172 	global 	CMAP	38.87	1.55
ewss 	  9.5685 	ocean 	DASILVA	4.03	2.37
nsss 	  6.0168 	ocean 	DASILVA	3.10	1.94
SST 	385.8984 	ocean 	GISS	17.21	22.42
SSS 	  0.3388 	ocean 	levitus	0.22	1.54
SICE 	 37.7169 	ocean 	GISS	0.34	110.93
T 	526.5561 	zonal 	ERA40	38.89	13.53
U 	  7.4266 	zonal 	ERA40	12.07	0.61
V 	  3.6979 	zonal 	ERA40	8.25	0.44
Q 	530.9451 	zonal 	ERA40	29.41	18.05

Total Performance Index is : 14.1623
Partial PI (atm only) is   : 6.2028