Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1994 1994

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 17.7586 	land 	CRU	25.13	0.70
msl 	  1.7121 	global 	COADS	11.69	0.14
qnet 	 20.4326 	ocean 	OAFLUX	14.24	1.43
tp 	 35.8230 	global 	CMAP	38.87	0.92
ewss 	  8.2239 	ocean 	DASILVA	4.03	2.04
nsss 	  5.6101 	ocean 	DASILVA	3.10	1.80
SST 	 33.5673 	ocean 	GISS	17.21	1.95
SSS 	  0.1489 	ocean 	levitus	0.22	0.67
SICE 	2048.6373 	ocean 	GISS	0.34	6025.40
T 	 21.0500 	zonal 	ERA40	38.89	0.54
U 	  2.3399 	zonal 	ERA40	12.07	0.19
V 	  2.0113 	zonal 	ERA40	8.25	0.24
Q 	 25.3666 	zonal 	ERA40	29.41	0.86

Total Performance Index is : 464.3753
Partial PI (atm only) is   : 0.5128

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1994 1994

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 15.9145 	land 	CRU	25.13	0.63
msl 	  1.7121 	global 	COADS	11.69	0.14
qnet 	 19.2601 	ocean 	OAFLUX	14.24	1.35
tp 	 35.8230 	global 	CMAP	38.87	0.92
ewss 	  8.9667 	ocean 	DASILVA	4.03	2.22
nsss 	  4.7667 	ocean 	DASILVA	3.10	1.53
SST 	 33.5673 	ocean 	GISS	17.21	1.95
SSS 	  0.1489 	ocean 	levitus	0.22	0.67
SICE 	2048.6373 	ocean 	GISS	0.34	6025.40
T 	 20.2891 	zonal 	ERA40	38.89	0.52
U 	  2.2102 	zonal 	ERA40	12.07	0.18
V 	  1.9136 	zonal 	ERA40	8.25	0.23
Q 	 19.8589 	zonal 	ERA40	29.41	0.67

Total Performance Index is : 464.3392
Partial PI (atm only) is   : 0.4700