Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1951 1951

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 17.9977 	land 	CRU	25.13	0.71
msl 	  2.4398 	global 	COADS	11.69	0.20
qnet 	 19.8754 	ocean 	OAFLUX	14.24	1.39
tp 	 38.8233 	global 	CMAP	38.87	0.99
ewss 	  7.9307 	ocean 	DASILVA	4.03	1.96
nsss 	  6.2054 	ocean 	DASILVA	3.10	2.00
SST 	 31.1882 	ocean 	GISS	17.21	1.81
SSS 	  0.1347 	ocean 	levitus	0.22	0.61
SICE 	2117.9852 	ocean 	GISS	0.34	6229.36
T 	 19.8230 	zonal 	ERA40	38.89	0.50
U 	  2.5033 	zonal 	ERA40	12.07	0.20
V 	  2.2234 	zonal 	ERA40	8.25	0.26
Q 	 24.0912 	zonal 	ERA40	29.41	0.81

Total Performance Index is : 480.0615
Partial PI (atm only) is   : 0.5242

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1951 1951

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 16.1911 	land 	CRU	25.13	0.64
msl 	  2.4398 	global 	COADS	11.69	0.20
qnet 	 18.6938 	ocean 	OAFLUX	14.24	1.31
tp 	 38.8233 	global 	CMAP	38.87	0.99
ewss 	  8.1681 	ocean 	DASILVA	4.03	2.02
nsss 	  5.7209 	ocean 	DASILVA	3.10	1.84
SST 	 31.1882 	ocean 	GISS	17.21	1.81
SSS 	  0.1347 	ocean 	levitus	0.22	0.61
SICE 	2117.9852 	ocean 	GISS	0.34	6229.36
T 	 18.1248 	zonal 	ERA40	38.89	0.46
U 	  2.3571 	zonal 	ERA40	12.07	0.19
V 	  2.0763 	zonal 	ERA40	8.25	0.25
Q 	 17.6809 	zonal 	ERA40	29.41	0.60

Total Performance Index is : 480.0215
Partial PI (atm only) is   : 0.4757