Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
caaa 1991 1991

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 19.4010 	land 	CRU	25.13	0.77
msl 	  1.3199 	global 	COADS	11.69	0.11
qnet 	 21.2890 	ocean 	OAFLUX	14.24	1.49
tp 	 24.7740 	global 	CMAP	38.87	0.63
ewss 	  9.7564 	ocean 	DASILVA	4.03	2.42
nsss 	  4.9289 	ocean 	DASILVA	3.10	1.58
T 	  7.7874 	zonal 	ERA40	38.89	0.20
U 	  1.9270 	zonal 	ERA40	12.07	0.15
V 	  2.0714 	zonal 	ERA40	8.25	0.25
Q 	 18.1054 	zonal 	ERA40	29.41	0.61

Total Performance Index is : 3.4007
Partial PI (atm only) is   : 5.4457

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
caaa 1991 1991

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 17.0877 	land 	CRU	25.13	0.67
msl 	  1.3199 	global 	COADS	11.69	0.11
qnet 	 20.0973 	ocean 	OAFLUX	14.24	1.41
tp 	 24.7740 	global 	CMAP	38.87	0.63
ewss 	 10.9494 	ocean 	DASILVA	4.03	2.71
nsss 	  4.5558 	ocean 	DASILVA	3.10	1.46
SST 	  4.5558 	ocean 	GISS	17.21	0
SSS 	  4.5558 	ocean 	levitus	0.22	0
SICE 	  4.5558 	ocean 	GISS	0.34	0
T 	  6.5771 	zonal 	ERA40	38.89	0.16
U 	  1.7523 	zonal 	ERA40	12.07	0.14
V 	  1.9614 	zonal 	ERA40	8.25	0.23
Q 	 11.7728 	zonal 	ERA40	29.41	0.40

Total Performance Index is : 0.6092
Partial PI (atm only) is   : 0.3342