Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1913 1913

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 27.8558 	land 	CRU	25.13	1.10
msl 	  2.9224 	global 	COADS	11.69	0.24
qnet 	 20.6556 	ocean 	OAFLUX	14.24	1.45
tp 	 47.5581 	global 	CMAP	38.87	1.22
ewss 	  8.8844 	ocean 	DASILVA	4.03	2.20
nsss 	  6.0684 	ocean 	DASILVA	3.10	1.95
SST 	 32.9142 	ocean 	GISS	17.21	1.91
SSS 	  0.1534 	ocean 	levitus	0.22	0.69
SICE 	2662.4064 	ocean 	GISS	0.34	7830.60
T 	 29.0768 	zonal 	ERA40	38.89	0.74
U 	  4.9939 	zonal 	ERA40	12.07	0.41
V 	  3.1164 	zonal 	ERA40	8.25	0.37
Q 	 39.3794 	zonal 	ERA40	29.41	1.33

Total Performance Index is : 603.4007
Partial PI (atm only) is   : 0.7728

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1913 1913

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 28.8357 	land 	CRU	25.13	1.14
msl 	  2.9224 	global 	COADS	11.69	0.24
qnet 	 19.4620 	ocean 	OAFLUX	14.24	1.36
tp 	 47.5581 	global 	CMAP	38.87	1.22
ewss 	  9.0459 	ocean 	DASILVA	4.03	2.24
nsss 	  5.6800 	ocean 	DASILVA	3.10	1.83
SST 	 32.9142 	ocean 	GISS	17.21	1.91
SSS 	  0.1534 	ocean 	levitus	0.22	0.69
SICE 	2662.4064 	ocean 	GISS	0.34	7830.60
T 	 27.0970 	zonal 	ERA40	38.89	0.69
U 	  4.7343 	zonal 	ERA40	12.07	0.39
V 	  3.0033 	zonal 	ERA40	8.25	0.36
Q 	 32.1176 	zonal 	ERA40	29.41	1.09

Total Performance Index is : 603.3661
Partial PI (atm only) is   : 0.7328