Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1998 1998

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 18.4464 	land 	CRU	25.13	0.73
msl 	  2.7062 	global 	COADS	11.69	0.23
qnet 	 19.2371 	ocean 	OAFLUX	14.24	1.35
tp 	 45.8060 	global 	CMAP	38.87	1.17
ewss 	  8.7281 	ocean 	DASILVA	4.03	2.16
nsss 	  5.6917 	ocean 	DASILVA	3.10	1.83
SST 	 34.8035 	ocean 	GISS	17.21	2.02
SSS 	  0.1480 	ocean 	levitus	0.22	0.67
SICE 	2035.6803 	ocean 	GISS	0.34	5987.29
T 	 20.7576 	zonal 	ERA40	38.89	0.53
U 	  4.6292 	zonal 	ERA40	12.07	0.38
V 	  2.6350 	zonal 	ERA40	8.25	0.31
Q 	 26.6044 	zonal 	ERA40	29.41	0.90

Total Performance Index is : 461.5053
Partial PI (atm only) is   : 0.6071

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1998 1998

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 15.6826 	land 	CRU	25.13	0.62
msl 	  2.7062 	global 	COADS	11.69	0.23
qnet 	 17.9595 	ocean 	OAFLUX	14.24	1.26
tp 	 45.8060 	global 	CMAP	38.87	1.17
ewss 	  8.9577 	ocean 	DASILVA	4.03	2.22
nsss 	  5.3713 	ocean 	DASILVA	3.10	1.73
SST 	 34.8035 	ocean 	GISS	17.21	2.02
SSS 	  0.1480 	ocean 	levitus	0.22	0.67
SICE 	2035.6803 	ocean 	GISS	0.34	5987.29
T 	 20.0763 	zonal 	ERA40	38.89	0.51
U 	  4.4475 	zonal 	ERA40	12.07	0.36
V 	  2.4981 	zonal 	ERA40	8.25	0.30
Q 	 20.6923 	zonal 	ERA40	29.41	0.70

Total Performance Index is : 461.4676
Partial PI (atm only) is   : 0.5557