Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
caaa 1978 1978

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 25.3612 	land 	CRU	25.13	1.00
msl 	  2.7139 	global 	COADS	11.69	0.23
qnet 	 19.1612 	ocean 	OAFLUX	14.24	1.34
tp 	 23.0244 	global 	CMAP	38.87	0.59
ewss 	  9.0836 	ocean 	DASILVA	4.03	2.25
nsss 	  4.7189 	ocean 	DASILVA	3.10	1.52
T 	 11.4804 	zonal 	ERA40	38.89	0.29
U 	  2.5631 	zonal 	ERA40	12.07	0.21
V 	  1.9302 	zonal 	ERA40	8.25	0.23
Q 	 22.0182 	zonal 	ERA40	29.41	0.74

Total Performance Index is : 3.4153
Partial PI (atm only) is   : 5.5085

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
caaa 1978 1978

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 21.4150 	land 	CRU	25.13	0.85
msl 	  2.7139 	global 	COADS	11.69	0.23
qnet 	 17.8912 	ocean 	OAFLUX	14.24	1.25
tp 	 23.0244 	global 	CMAP	38.87	0.59
ewss 	  9.5876 	ocean 	DASILVA	4.03	2.37
nsss 	  4.2719 	ocean 	DASILVA	3.10	1.37
SST 	  4.2719 	ocean 	GISS	17.21	0
SSS 	  4.2719 	ocean 	levitus	0.22	0
SICE 	  4.2719 	ocean 	GISS	0.34	0
T 	 10.2810 	zonal 	ERA40	38.89	0.26
U 	  2.2777 	zonal 	ERA40	12.07	0.18
V 	  1.8012 	zonal 	ERA40	8.25	0.21
Q 	 15.1626 	zonal 	ERA40	29.41	0.51

Total Performance Index is : 0.6015
Partial PI (atm only) is   : 0.4042