Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
c4co 1918 1918

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	251.9224 	land 	CRU	25.13	10.02
msl 	  3.1542 	global 	COADS	11.69	0.26
qnet 	 20.4034 	ocean 	OAFLUX	14.24	1.43
tp 	 59.7588 	global 	CMAP	38.87	1.53
ewss 	  9.1385 	ocean 	DASILVA	4.03	2.26
nsss 	  6.5236 	ocean 	DASILVA	3.10	2.10
SST 	339.2549 	ocean 	GISS	17.21	19.71
SSS 	  0.3217 	ocean 	levitus	0.22	1.46
SICE 	 52.6686 	ocean 	GISS	0.34	154.90
T 	464.1302 	zonal 	ERA40	38.89	11.93
U 	  6.6376 	zonal 	ERA40	12.07	0.54
V 	  3.4956 	zonal 	ERA40	8.25	0.42
Q 	456.4352 	zonal 	ERA40	29.41	15.51

Total Performance Index is : 17.0823
Partial PI (atm only) is   : 5.7442

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
c4co 1918 1918

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	193.8646 	land 	CRU	25.13	7.71
msl 	  3.1542 	global 	COADS	11.69	0.26
qnet 	 19.3099 	ocean 	OAFLUX	14.24	1.35
tp 	 59.7588 	global 	CMAP	38.87	1.53
ewss 	  8.7969 	ocean 	DASILVA	4.03	2.18
nsss 	  5.8732 	ocean 	DASILVA	3.10	1.89
SST 	339.2549 	ocean 	GISS	17.21	19.71
SSS 	  0.3217 	ocean 	levitus	0.22	1.46
SICE 	 52.6686 	ocean 	GISS	0.34	154.90
T 	462.9497 	zonal 	ERA40	38.89	11.90
U 	  5.4712 	zonal 	ERA40	12.07	0.45
V 	  3.4232 	zonal 	ERA40	8.25	0.41
Q 	454.2218 	zonal 	ERA40	29.41	15.44

Total Performance Index is : 16.8607
Partial PI (atm only) is   : 5.3857