Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1969 1969

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 23.6088 	land 	CRU	25.13	0.93
msl 	  3.1037 	global 	COADS	11.69	0.26
qnet 	 20.6632 	ocean 	OAFLUX	14.24	1.45
tp 	 39.4546 	global 	CMAP	38.87	1.01
ewss 	  9.2905 	ocean 	DASILVA	4.03	2.30
nsss 	  6.2595 	ocean 	DASILVA	3.10	2.01
SST 	 28.5564 	ocean 	GISS	17.21	1.65
SSS 	  0.1382 	ocean 	levitus	0.22	0.62
SICE 	2262.0541 	ocean 	GISS	0.34	6653.10
T 	 21.5884 	zonal 	ERA40	38.89	0.55
U 	  5.5421 	zonal 	ERA40	12.07	0.45
V 	  2.9231 	zonal 	ERA40	8.25	0.35
Q 	 28.5156 	zonal 	ERA40	29.41	0.96

Total Performance Index is : 512.7415
Partial PI (atm only) is   : 0.6442

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1969 1969

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 21.2865 	land 	CRU	25.13	0.84
msl 	  3.1037 	global 	COADS	11.69	0.26
qnet 	 19.4985 	ocean 	OAFLUX	14.24	1.36
tp 	 39.4546 	global 	CMAP	38.87	1.01
ewss 	  9.3627 	ocean 	DASILVA	4.03	2.32
nsss 	  5.6485 	ocean 	DASILVA	3.10	1.82
SST 	 28.5564 	ocean 	GISS	17.21	1.65
SSS 	  0.1382 	ocean 	levitus	0.22	0.62
SICE 	2262.0541 	ocean 	GISS	0.34	6653.10
T 	 20.1889 	zonal 	ERA40	38.89	0.51
U 	  5.2812 	zonal 	ERA40	12.07	0.43
V 	  2.7767 	zonal 	ERA40	8.25	0.33
Q 	 22.1853 	zonal 	ERA40	29.41	0.75

Total Performance Index is : 512.6923
Partial PI (atm only) is   : 0.5900