Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vhis 1980 1980

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 28.5583 	land 	CRU	25.13	1.13
msl 	  3.1818 	global 	COADS	11.69	0.27
qnet 	 21.0877 	ocean 	OAFLUX	14.24	1.48
tp 	 37.7788 	global 	CMAP	38.87	0.97
ewss 	  7.9319 	ocean 	DASILVA	4.03	1.96
nsss 	  6.2211 	ocean 	DASILVA	3.10	2.00
SST 	 33.3704 	ocean 	GISS	17.21	1.93
SSS 	  0.1611 	ocean 	levitus	0.22	0.73
SICE 	2706.0826 	ocean 	GISS	0.34	7959.06
T 	 26.6697 	zonal 	ERA40	38.89	0.68
U 	  5.1796 	zonal 	ERA40	12.07	0.42
V 	  2.8946 	zonal 	ERA40	8.25	0.35
Q 	 35.5485 	zonal 	ERA40	29.41	1.20

Total Performance Index is : 613.2446
Partial PI (atm only) is   : 0.7171

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vhis 1980 1980

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 26.8541 	land 	CRU	25.13	1.06
msl 	  3.1818 	global 	COADS	11.69	0.27
qnet 	 19.9078 	ocean 	OAFLUX	14.24	1.39
tp 	 37.7788 	global 	CMAP	38.87	0.97
ewss 	  8.2944 	ocean 	DASILVA	4.03	2.05
nsss 	  5.7256 	ocean 	DASILVA	3.10	1.84
SST 	 33.3704 	ocean 	GISS	17.21	1.93
SSS 	  0.1611 	ocean 	levitus	0.22	0.73
SICE 	2706.0826 	ocean 	GISS	0.34	7959.06
T 	 25.4411 	zonal 	ERA40	38.89	0.65
U 	  4.9245 	zonal 	ERA40	12.07	0.40
V 	  2.7672 	zonal 	ERA40	8.25	0.33
Q 	 29.2233 	zonal 	ERA40	29.41	0.99

Total Performance Index is : 613.2053
Partial PI (atm only) is   : 0.6671