Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vhis 1917 1917

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 24.6149 	land 	CRU	25.13	0.97
msl 	  2.1646 	global 	COADS	11.69	0.18
qnet 	 19.3667 	ocean 	OAFLUX	14.24	1.36
tp 	 39.0982 	global 	CMAP	38.87	1.00
ewss 	  8.1814 	ocean 	DASILVA	4.03	2.03
nsss 	  5.3959 	ocean 	DASILVA	3.10	1.74
SST 	 28.1495 	ocean 	GISS	17.21	1.63
SSS 	  0.1290 	ocean 	levitus	0.22	0.58
SICE 	2330.4241 	ocean 	GISS	0.34	6854.18
T 	 22.5352 	zonal 	ERA40	38.89	0.57
U 	  4.8458 	zonal 	ERA40	12.07	0.40
V 	  2.5920 	zonal 	ERA40	8.25	0.31
Q 	 29.8270 	zonal 	ERA40	29.41	1.01

Total Performance Index is : 528.1507
Partial PI (atm only) is   : 0.6342

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vhis 1917 1917

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 22.5837 	land 	CRU	25.13	0.89
msl 	  2.1646 	global 	COADS	11.69	0.18
qnet 	 18.1366 	ocean 	OAFLUX	14.24	1.27
tp 	 39.0982 	global 	CMAP	38.87	1.00
ewss 	  8.3628 	ocean 	DASILVA	4.03	2.07
nsss 	  4.5785 	ocean 	DASILVA	3.10	1.47
SST 	 28.1495 	ocean 	GISS	17.21	1.63
SSS 	  0.1290 	ocean 	levitus	0.22	0.58
SICE 	2330.4241 	ocean 	GISS	0.34	6854.18
T 	 20.5427 	zonal 	ERA40	38.89	0.52
U 	  4.5808 	zonal 	ERA40	12.07	0.37
V 	  2.4693 	zonal 	ERA40	8.25	0.29
Q 	 22.6445 	zonal 	ERA40	29.41	0.76

Total Performance Index is : 528.0930
Partial PI (atm only) is   : 0.5728