Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vaaa 2016 2016

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 14.3058 	land 	CRU	25.13	0.56
msl 	  1.3551 	global 	COADS	11.69	0.11
qnet 	 20.3509 	ocean 	OAFLUX	14.24	1.42
tp 	 26.2995 	global 	CMAP	38.87	0.67
ewss 	 10.1168 	ocean 	DASILVA	4.03	2.51
nsss 	  5.2345 	ocean 	DASILVA	3.10	1.68
T 	  8.4682 	zonal 	ERA40	38.89	0.21
U 	  3.5692 	zonal 	ERA40	12.07	0.29
V 	  2.1213 	zonal 	ERA40	8.25	0.25
Q 	 12.2611 	zonal 	ERA40	29.41	0.41

Total Performance Index is : 3.3930
Partial PI (atm only) is   : 5.3928

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vaaa 2016 2016

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 10.8525 	land 	CRU	25.13	0.43
msl 	  1.3551 	global 	COADS	11.69	0.11
qnet 	 19.1616 	ocean 	OAFLUX	14.24	1.34
tp 	 26.2995 	global 	CMAP	38.87	0.67
ewss 	 12.0184 	ocean 	DASILVA	4.03	2.98
nsss 	  4.9134 	ocean 	DASILVA	3.10	1.58
SST 	  4.9134 	ocean 	GISS	17.21	0
SSS 	  4.9134 	ocean 	levitus	0.22	0
SICE 	  4.9134 	ocean 	GISS	0.34	0
T 	  8.0172 	zonal 	ERA40	38.89	0.20
U 	  3.4416 	zonal 	ERA40	12.07	0.28
V 	  1.9802 	zonal 	ERA40	8.25	0.24
Q 	  6.5236 	zonal 	ERA40	29.41	0.22

Total Performance Index is : 0.6192
Partial PI (atm only) is   : 0.3071