Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1950 1950

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 17.5006 	land 	CRU	25.13	0.69
msl 	  1.9343 	global 	COADS	11.69	0.16
qnet 	 20.3007 	ocean 	OAFLUX	14.24	1.42
tp 	 42.8085 	global 	CMAP	38.87	1.10
ewss 	  8.3641 	ocean 	DASILVA	4.03	2.07
nsss 	  6.1442 	ocean 	DASILVA	3.10	1.98
SST 	 32.0729 	ocean 	GISS	17.21	1.86
SSS 	  0.1420 	ocean 	levitus	0.22	0.64
SICE 	2122.2469 	ocean 	GISS	0.34	6241.90
T 	 21.2400 	zonal 	ERA40	38.89	0.54
U 	  2.5926 	zonal 	ERA40	12.07	0.21
V 	  2.2487 	zonal 	ERA40	8.25	0.27
Q 	 26.2130 	zonal 	ERA40	29.41	0.89

Total Performance Index is : 481.0561
Partial PI (atm only) is   : 0.5514

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1950 1950

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 16.1613 	land 	CRU	25.13	0.64
msl 	  1.9343 	global 	COADS	11.69	0.16
qnet 	 19.1078 	ocean 	OAFLUX	14.24	1.34
tp 	 42.8085 	global 	CMAP	38.87	1.10
ewss 	  8.7033 	ocean 	DASILVA	4.03	2.15
nsss 	  5.3288 	ocean 	DASILVA	3.10	1.71
SST 	 32.0729 	ocean 	GISS	17.21	1.86
SSS 	  0.1420 	ocean 	levitus	0.22	0.64
SICE 	2122.2469 	ocean 	GISS	0.34	6241.90
T 	 19.5179 	zonal 	ERA40	38.89	0.50
U 	  2.4071 	zonal 	ERA40	12.07	0.19
V 	  2.1472 	zonal 	ERA40	8.25	0.26
Q 	 19.7564 	zonal 	ERA40	29.41	0.67

Total Performance Index is : 481.0092
Partial PI (atm only) is   : 0.5028