Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
caaa 1977 1977

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 23.7455 	land 	CRU	25.13	0.94
msl 	  1.2919 	global 	COADS	11.69	0.11
qnet 	 18.8256 	ocean 	OAFLUX	14.24	1.32
tp 	 24.8017 	global 	CMAP	38.87	0.63
ewss 	 10.2240 	ocean 	DASILVA	4.03	2.53
nsss 	  5.0931 	ocean 	DASILVA	3.10	1.64
T 	 10.6949 	zonal 	ERA40	38.89	0.27
U 	  2.7115 	zonal 	ERA40	12.07	0.22
V 	  2.1669 	zonal 	ERA40	8.25	0.26
Q 	 21.9416 	zonal 	ERA40	29.41	0.74

Total Performance Index is : 3.4353
Partial PI (atm only) is   : 5.4885

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
caaa 1977 1977

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 20.8649 	land 	CRU	25.13	0.83
msl 	  1.2919 	global 	COADS	11.69	0.11
qnet 	 17.6317 	ocean 	OAFLUX	14.24	1.23
tp 	 24.8017 	global 	CMAP	38.87	0.63
ewss 	 11.6129 	ocean 	DASILVA	4.03	2.88
nsss 	  4.7778 	ocean 	DASILVA	3.10	1.54
SST 	  4.7778 	ocean 	GISS	17.21	0
SSS 	  4.7778 	ocean 	levitus	0.22	0
SICE 	  4.7778 	ocean 	GISS	0.34	0
T 	  9.5489 	zonal 	ERA40	38.89	0.24
U 	  2.4051 	zonal 	ERA40	12.07	0.19
V 	  2.0383 	zonal 	ERA40	8.25	0.24
Q 	 15.2605 	zonal 	ERA40	29.41	0.51

Total Performance Index is : 0.6461
Partial PI (atm only) is   : 0.3928