Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vhis 1986 1986

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 24.9772 	land 	CRU	25.13	0.99
msl 	  2.8748 	global 	COADS	11.69	0.24
qnet 	 20.5494 	ocean 	OAFLUX	14.24	1.44
tp 	 36.6263 	global 	CMAP	38.87	0.94
ewss 	  8.1975 	ocean 	DASILVA	4.03	2.03
nsss 	  6.0012 	ocean 	DASILVA	3.10	1.93
SST 	 33.2734 	ocean 	GISS	17.21	1.93
SSS 	  0.1464 	ocean 	levitus	0.22	0.66
SICE 	2273.8501 	ocean 	GISS	0.34	6687.79
T 	 24.5645 	zonal 	ERA40	38.89	0.63
U 	  4.0096 	zonal 	ERA40	12.07	0.33
V 	  2.9786 	zonal 	ERA40	8.25	0.36
Q 	 33.3758 	zonal 	ERA40	29.41	1.13

Total Performance Index is : 515.4153
Partial PI (atm only) is   : 0.6600

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vhis 1986 1986

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 25.3704 	land 	CRU	25.13	1.00
msl 	  2.8748 	global 	COADS	11.69	0.24
qnet 	 19.3552 	ocean 	OAFLUX	14.24	1.35
tp 	 36.6263 	global 	CMAP	38.87	0.94
ewss 	  9.1312 	ocean 	DASILVA	4.03	2.26
nsss 	  5.5346 	ocean 	DASILVA	3.10	1.78
SST 	 33.2734 	ocean 	GISS	17.21	1.93
SSS 	  0.1464 	ocean 	levitus	0.22	0.66
SICE 	2273.8501 	ocean 	GISS	0.34	6687.79
T 	 23.6104 	zonal 	ERA40	38.89	0.60
U 	  3.8326 	zonal 	ERA40	12.07	0.31
V 	  2.8389 	zonal 	ERA40	8.25	0.34
Q 	 27.3163 	zonal 	ERA40	29.41	0.92

Total Performance Index is : 515.3938
Partial PI (atm only) is   : 0.6214