Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1991 1991

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 16.4899 	land 	CRU	25.13	0.65
msl 	  2.6720 	global 	COADS	11.69	0.22
qnet 	 20.9372 	ocean 	OAFLUX	14.24	1.47
tp 	 35.0347 	global 	CMAP	38.87	0.90
ewss 	  8.5069 	ocean 	DASILVA	4.03	2.11
nsss 	  5.7288 	ocean 	DASILVA	3.10	1.84
SST 	 37.3586 	ocean 	GISS	17.21	2.17
SSS 	  0.1445 	ocean 	levitus	0.22	0.65
SICE 	2034.4865 	ocean 	GISS	0.34	5983.78
T 	 21.3082 	zonal 	ERA40	38.89	0.54
U 	  2.6740 	zonal 	ERA40	12.07	0.22
V 	  2.6159 	zonal 	ERA40	8.25	0.31
Q 	 23.7614 	zonal 	ERA40	29.41	0.80

Total Performance Index is : 461.2046
Partial PI (atm only) is   : 0.5200

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1991 1991

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 14.3534 	land 	CRU	25.13	0.57
msl 	  2.6720 	global 	COADS	11.69	0.22
qnet 	 19.7469 	ocean 	OAFLUX	14.24	1.38
tp 	 35.0347 	global 	CMAP	38.87	0.90
ewss 	  9.1518 	ocean 	DASILVA	4.03	2.27
nsss 	  5.4673 	ocean 	DASILVA	3.10	1.76
SST 	 37.3586 	ocean 	GISS	17.21	2.17
SSS 	  0.1445 	ocean 	levitus	0.22	0.65
SICE 	2034.4865 	ocean 	GISS	0.34	5983.78
T 	 20.2027 	zonal 	ERA40	38.89	0.51
U 	  2.5121 	zonal 	ERA40	12.07	0.20
V 	  2.4992 	zonal 	ERA40	8.25	0.30
Q 	 18.2453 	zonal 	ERA40	29.41	0.62

Total Performance Index is : 461.1792
Partial PI (atm only) is   : 0.4742