Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vhis 1993 1993

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 28.1538 	land 	CRU	25.13	1.12
msl 	  2.2072 	global 	COADS	11.69	0.18
qnet 	 20.3258 	ocean 	OAFLUX	14.24	1.42
tp 	 31.9819 	global 	CMAP	38.87	0.82
ewss 	  7.9039 	ocean 	DASILVA	4.03	1.96
nsss 	  5.2864 	ocean 	DASILVA	3.10	1.70
SST 	 30.2390 	ocean 	GISS	17.21	1.75
SSS 	  0.1526 	ocean 	levitus	0.22	0.69
SICE 	2651.7529 	ocean 	GISS	0.34	7799.27
T 	 23.9422 	zonal 	ERA40	38.89	0.61
U 	  3.6053 	zonal 	ERA40	12.07	0.29
V 	  2.5573 	zonal 	ERA40	8.25	0.30
Q 	 32.6477 	zonal 	ERA40	29.41	1.11

Total Performance Index is : 600.8630
Partial PI (atm only) is   : 0.6328

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vhis 1993 1993

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 26.9726 	land 	CRU	25.13	1.07
msl 	  2.2072 	global 	COADS	11.69	0.18
qnet 	 19.1312 	ocean 	OAFLUX	14.24	1.34
tp 	 31.9819 	global 	CMAP	38.87	0.82
ewss 	  7.4387 	ocean 	DASILVA	4.03	1.84
nsss 	  4.8178 	ocean 	DASILVA	3.10	1.55
SST 	 30.2390 	ocean 	GISS	17.21	1.75
SSS 	  0.1526 	ocean 	levitus	0.22	0.69
SICE 	2651.7529 	ocean 	GISS	0.34	7799.27
T 	 22.9058 	zonal 	ERA40	38.89	0.58
U 	  3.4628 	zonal 	ERA40	12.07	0.28
V 	  2.4431 	zonal 	ERA40	8.25	0.29
Q 	 26.7789 	zonal 	ERA40	29.41	0.91

Total Performance Index is : 600.8130
Partial PI (atm only) is   : 0.5900