Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1919 1919

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 26.4359 	land 	CRU	25.13	1.05
msl 	  2.5657 	global 	COADS	11.69	0.21
qnet 	 19.9577 	ocean 	OAFLUX	14.24	1.40
tp 	 33.0526 	global 	CMAP	38.87	0.85
ewss 	  7.6652 	ocean 	DASILVA	4.03	1.90
nsss 	  5.8475 	ocean 	DASILVA	3.10	1.88
SST 	 31.8059 	ocean 	GISS	17.21	1.84
SSS 	  0.1723 	ocean 	levitus	0.22	0.78
SICE 	2548.1978 	ocean 	GISS	0.34	7494.69
T 	 25.8470 	zonal 	ERA40	38.89	0.66
U 	  3.4935 	zonal 	ERA40	12.07	0.28
V 	  2.2344 	zonal 	ERA40	8.25	0.27
Q 	 33.7950 	zonal 	ERA40	29.41	1.14

Total Performance Index is : 577.4576
Partial PI (atm only) is   : 0.6371

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1919 1919

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 25.2190 	land 	CRU	25.13	1.00
msl 	  2.5657 	global 	COADS	11.69	0.21
qnet 	 18.7384 	ocean 	OAFLUX	14.24	1.31
tp 	 33.0526 	global 	CMAP	38.87	0.85
ewss 	  7.4441 	ocean 	DASILVA	4.03	1.84
nsss 	  4.9073 	ocean 	DASILVA	3.10	1.58
SST 	 31.8059 	ocean 	GISS	17.21	1.84
SSS 	  0.1723 	ocean 	levitus	0.22	0.78
SICE 	2548.1978 	ocean 	GISS	0.34	7494.69
T 	 23.9148 	zonal 	ERA40	38.89	0.61
U 	  3.1493 	zonal 	ERA40	12.07	0.26
V 	  2.0908 	zonal 	ERA40	8.25	0.25
Q 	 26.6497 	zonal 	ERA40	29.41	0.90

Total Performance Index is : 577.3938
Partial PI (atm only) is   : 0.5828