Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vhis 1984 1984

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 27.9957 	land 	CRU	25.13	1.11
msl 	  2.9050 	global 	COADS	11.69	0.24
qnet 	 20.2755 	ocean 	OAFLUX	14.24	1.42
tp 	 39.1290 	global 	CMAP	38.87	1.00
ewss 	  8.2872 	ocean 	DASILVA	4.03	2.05
nsss 	  6.3386 	ocean 	DASILVA	3.10	2.04
SST 	 34.2710 	ocean 	GISS	17.21	1.99
SSS 	  0.1608 	ocean 	levitus	0.22	0.73
SICE 	2558.5719 	ocean 	GISS	0.34	7525.21
T 	 26.1533 	zonal 	ERA40	38.89	0.67
U 	  3.6097 	zonal 	ERA40	12.07	0.29
V 	  2.7702 	zonal 	ERA40	8.25	0.33
Q 	 33.5038 	zonal 	ERA40	29.41	1.13

Total Performance Index is : 579.8623
Partial PI (atm only) is   : 0.6814

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vhis 1984 1984

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 27.5604 	land 	CRU	25.13	1.09
msl 	  2.9050 	global 	COADS	11.69	0.24
qnet 	 19.0650 	ocean 	OAFLUX	14.24	1.33
tp 	 39.1290 	global 	CMAP	38.87	1.00
ewss 	  8.9985 	ocean 	DASILVA	4.03	2.23
nsss 	  5.8494 	ocean 	DASILVA	3.10	1.88
SST 	 34.2710 	ocean 	GISS	17.21	1.99
SSS 	  0.1608 	ocean 	levitus	0.22	0.73
SICE 	2558.5719 	ocean 	GISS	0.34	7525.21
T 	 25.1110 	zonal 	ERA40	38.89	0.64
U 	  3.3781 	zonal 	ERA40	12.07	0.27
V 	  2.6512 	zonal 	ERA40	8.25	0.32
Q 	 27.3295 	zonal 	ERA40	29.41	0.92

Total Performance Index is : 579.8346
Partial PI (atm only) is   : 0.6400