Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1985 1985

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 17.0132 	land 	CRU	25.13	0.67
msl 	  2.1728 	global 	COADS	11.69	0.18
qnet 	 20.2174 	ocean 	OAFLUX	14.24	1.41
tp 	 33.0527 	global 	CMAP	38.87	0.85
ewss 	  9.1169 	ocean 	DASILVA	4.03	2.26
nsss 	  6.2356 	ocean 	DASILVA	3.10	2.01
SST 	 34.3615 	ocean 	GISS	17.21	1.99
SSS 	  0.1443 	ocean 	levitus	0.22	0.65
SICE 	2106.5620 	ocean 	GISS	0.34	6195.77
T 	 22.2455 	zonal 	ERA40	38.89	0.57
U 	  2.6360 	zonal 	ERA40	12.07	0.21
V 	  2.4448 	zonal 	ERA40	8.25	0.29
Q 	 28.4528 	zonal 	ERA40	29.41	0.96

Total Performance Index is : 477.5246
Partial PI (atm only) is   : 0.5328

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1985 1985

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 15.2151 	land 	CRU	25.13	0.60
msl 	  2.1728 	global 	COADS	11.69	0.18
qnet 	 19.0779 	ocean 	OAFLUX	14.24	1.33
tp 	 33.0527 	global 	CMAP	38.87	0.85
ewss 	  9.9560 	ocean 	DASILVA	4.03	2.47
nsss 	  5.8658 	ocean 	DASILVA	3.10	1.89
SST 	 34.3615 	ocean 	GISS	17.21	1.99
SSS 	  0.1443 	ocean 	levitus	0.22	0.65
SICE 	2106.5620 	ocean 	GISS	0.34	6195.77
T 	 21.3117 	zonal 	ERA40	38.89	0.54
U 	  2.5023 	zonal 	ERA40	12.07	0.20
V 	  2.3214 	zonal 	ERA40	8.25	0.28
Q 	 22.5182 	zonal 	ERA40	29.41	0.76

Total Performance Index is : 477.5007
Partial PI (atm only) is   : 0.4871