Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vhis 1922 1922

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 20.6539 	land 	CRU	25.13	0.82
msl 	  2.1474 	global 	COADS	11.69	0.18
qnet 	 21.1747 	ocean 	OAFLUX	14.24	1.48
tp 	 35.4258 	global 	CMAP	38.87	0.91
ewss 	  8.2048 	ocean 	DASILVA	4.03	2.03
nsss 	  5.5495 	ocean 	DASILVA	3.10	1.79
SST 	 31.3329 	ocean 	GISS	17.21	1.82
SSS 	  0.1427 	ocean 	levitus	0.22	0.64
SICE 	2296.5515 	ocean 	GISS	0.34	6754.56
T 	 22.9764 	zonal 	ERA40	38.89	0.59
U 	  3.3741 	zonal 	ERA40	12.07	0.27
V 	  2.0640 	zonal 	ERA40	8.25	0.25
Q 	 29.0560 	zonal 	ERA40	29.41	0.98

Total Performance Index is : 520.4861
Partial PI (atm only) is   : 0.5714

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vhis 1922 1922

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 19.3675 	land 	CRU	25.13	0.77
msl 	  2.1474 	global 	COADS	11.69	0.18
qnet 	 20.0299 	ocean 	OAFLUX	14.24	1.40
tp 	 35.4258 	global 	CMAP	38.87	0.91
ewss 	  8.3273 	ocean 	DASILVA	4.03	2.06
nsss 	  4.9729 	ocean 	DASILVA	3.10	1.60
SST 	 31.3329 	ocean 	GISS	17.21	1.82
SSS 	  0.1427 	ocean 	levitus	0.22	0.64
SICE 	2296.5515 	ocean 	GISS	0.34	6754.56
T 	 21.2443 	zonal 	ERA40	38.89	0.54
U 	  3.0959 	zonal 	ERA40	12.07	0.25
V 	  1.9532 	zonal 	ERA40	8.25	0.23
Q 	 22.1985 	zonal 	ERA40	29.41	0.75

Total Performance Index is : 520.4392
Partial PI (atm only) is   : 0.5185