Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
v585 2018 2018

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 16.3431 	land 	CRU	25.13	0.65
msl 	  1.6677 	global 	COADS	11.69	0.14
qnet 	 19.4104 	ocean 	OAFLUX	14.24	1.36
tp 	 41.8276 	global 	CMAP	38.87	1.07
ewss 	  7.9615 	ocean 	DASILVA	4.03	1.97
nsss 	  5.7771 	ocean 	DASILVA	3.10	1.86
SST 	 45.6109 	ocean 	GISS	17.21	2.65
SSS 	  0.1429 	ocean 	levitus	0.22	0.64
SICE 	1651.6152 	ocean 	GISS	0.34	4857.69
T 	 27.2488 	zonal 	ERA40	38.89	0.70
U 	  2.6319 	zonal 	ERA40	12.07	0.21
V 	  2.2278 	zonal 	ERA40	8.25	0.27
Q 	 27.3868 	zonal 	ERA40	29.41	0.93

Total Performance Index is : 374.6261
Partial PI (atm only) is   : 0.5671

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
v585 2018 2018

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 12.7834 	land 	CRU	25.13	0.50
msl 	  1.6677 	global 	COADS	11.69	0.14
qnet 	 18.1697 	ocean 	OAFLUX	14.24	1.27
tp 	 41.8276 	global 	CMAP	38.87	1.07
ewss 	  8.4016 	ocean 	DASILVA	4.03	2.08
nsss 	  4.9730 	ocean 	DASILVA	3.10	1.60
SST 	 45.6109 	ocean 	GISS	17.21	2.65
SSS 	  0.1429 	ocean 	levitus	0.22	0.64
SICE 	1651.6152 	ocean 	GISS	0.34	4857.69
T 	 26.9160 	zonal 	ERA40	38.89	0.69
U 	  2.5071 	zonal 	ERA40	12.07	0.20
V 	  2.1028 	zonal 	ERA40	8.25	0.25
Q 	 22.1572 	zonal 	ERA40	29.41	0.75

Total Performance Index is : 374.5792
Partial PI (atm only) is   : 0.5142