Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1869 1869

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 25.9544 	land 	CRU	25.13	1.03
msl 	  3.1274 	global 	COADS	11.69	0.26
qnet 	 20.9844 	ocean 	OAFLUX	14.24	1.47
tp 	 39.3169 	global 	CMAP	38.87	1.01
ewss 	  8.6346 	ocean 	DASILVA	4.03	2.14
nsss 	  6.0108 	ocean 	DASILVA	3.10	1.93
SST 	 29.3771 	ocean 	GISS	17.21	1.70
SSS 	  0.1534 	ocean 	levitus	0.22	0.69
SICE 	2790.5872 	ocean 	GISS	0.34	8207.60
T 	 24.7696 	zonal 	ERA40	38.89	0.63
U 	  3.7853 	zonal 	ERA40	12.07	0.31
V 	  2.6246 	zonal 	ERA40	8.25	0.31
Q 	 32.4416 	zonal 	ERA40	29.41	1.10

Total Performance Index is : 632.3215
Partial PI (atm only) is   : 0.6642

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1869 1869

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 25.0132 	land 	CRU	25.13	0.99
msl 	  3.1274 	global 	COADS	11.69	0.26
qnet 	 19.8136 	ocean 	OAFLUX	14.24	1.39
tp 	 39.3169 	global 	CMAP	38.87	1.01
ewss 	  9.0391 	ocean 	DASILVA	4.03	2.24
nsss 	  5.1585 	ocean 	DASILVA	3.10	1.66
SST 	 29.3771 	ocean 	GISS	17.21	1.70
SSS 	  0.1534 	ocean 	levitus	0.22	0.69
SICE 	2790.5872 	ocean 	GISS	0.34	8207.60
T 	 22.5862 	zonal 	ERA40	38.89	0.58
U 	  3.5642 	zonal 	ERA40	12.07	0.29
V 	  2.4967 	zonal 	ERA40	8.25	0.30
Q 	 25.0373 	zonal 	ERA40	29.41	0.85

Total Performance Index is : 632.2738
Partial PI (atm only) is   : 0.6114