Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1929 1929

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 22.4451 	land 	CRU	25.13	0.89
msl 	  2.5556 	global 	COADS	11.69	0.21
qnet 	 20.5990 	ocean 	OAFLUX	14.24	1.44
tp 	 39.5125 	global 	CMAP	38.87	1.01
ewss 	  6.9784 	ocean 	DASILVA	4.03	1.73
nsss 	  4.9733 	ocean 	DASILVA	3.10	1.60
SST 	 27.7088 	ocean 	GISS	17.21	1.61
SSS 	  0.1390 	ocean 	levitus	0.22	0.63
SICE 	2406.8628 	ocean 	GISS	0.34	7079.00
T 	 20.5127 	zonal 	ERA40	38.89	0.52
U 	  3.1489 	zonal 	ERA40	12.07	0.26
V 	  2.2677 	zonal 	ERA40	8.25	0.27
Q 	 27.4222 	zonal 	ERA40	29.41	0.93

Total Performance Index is : 545.3923
Partial PI (atm only) is   : 0.5842

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1929 1929

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 20.7195 	land 	CRU	25.13	0.82
msl 	  2.5556 	global 	COADS	11.69	0.21
qnet 	 19.4314 	ocean 	OAFLUX	14.24	1.36
tp 	 39.5125 	global 	CMAP	38.87	1.01
ewss 	  6.9623 	ocean 	DASILVA	4.03	1.72
nsss 	  4.5146 	ocean 	DASILVA	3.10	1.45
SST 	 27.7088 	ocean 	GISS	17.21	1.61
SSS 	  0.1390 	ocean 	levitus	0.22	0.63
SICE 	2406.8628 	ocean 	GISS	0.34	7079.00
T 	 18.6837 	zonal 	ERA40	38.89	0.48
U 	  2.9082 	zonal 	ERA40	12.07	0.24
V 	  2.1495 	zonal 	ERA40	8.25	0.26
Q 	 20.5144 	zonal 	ERA40	29.41	0.69

Total Performance Index is : 545.3446
Partial PI (atm only) is   : 0.5300