Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1965 1965

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 22.9888 	land 	CRU	25.13	0.91
msl 	  2.8270 	global 	COADS	11.69	0.24
qnet 	 20.2371 	ocean 	OAFLUX	14.24	1.42
tp 	 43.2020 	global 	CMAP	38.87	1.11
ewss 	  6.9508 	ocean 	DASILVA	4.03	1.72
nsss 	  5.8475 	ocean 	DASILVA	3.10	1.88
SST 	 32.7582 	ocean 	GISS	17.21	1.90
SSS 	  0.1413 	ocean 	levitus	0.22	0.64
SICE 	2413.8679 	ocean 	GISS	0.34	7099.61
T 	 22.9429 	zonal 	ERA40	38.89	0.58
U 	  3.3653 	zonal 	ERA40	12.07	0.27
V 	  2.3153 	zonal 	ERA40	8.25	0.28
Q 	 28.7046 	zonal 	ERA40	29.41	0.97

Total Performance Index is : 547.0407
Partial PI (atm only) is   : 0.6228

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1965 1965

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 21.0722 	land 	CRU	25.13	0.83
msl 	  2.8270 	global 	COADS	11.69	0.24
qnet 	 19.0227 	ocean 	OAFLUX	14.24	1.33
tp 	 43.2020 	global 	CMAP	38.87	1.11
ewss 	  6.9202 	ocean 	DASILVA	4.03	1.71
nsss 	  5.3983 	ocean 	DASILVA	3.10	1.74
SST 	 32.7582 	ocean 	GISS	17.21	1.90
SSS 	  0.1413 	ocean 	levitus	0.22	0.64
SICE 	2413.8679 	ocean 	GISS	0.34	7099.61
T 	 21.2517 	zonal 	ERA40	38.89	0.54
U 	  3.0777 	zonal 	ERA40	12.07	0.25
V 	  2.2003 	zonal 	ERA40	8.25	0.26
Q 	 22.1951 	zonal 	ERA40	29.41	0.75

Total Performance Index is : 546.9930
Partial PI (atm only) is   : 0.5685