Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
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Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 70.1554 	land 	CRU	25.13	2.79
msl 	  3.0328 	global 	COADS	11.69	0.25
qnet 	 19.4410 	ocean 	OAFLUX	14.24	1.36
tp 	 51.0274 	global 	CMAP	38.87	1.31
ewss 	  9.6725 	ocean 	DASILVA	4.03	2.40
nsss 	  7.9891 	ocean 	DASILVA	3.10	2.57
SST 	136.5597 	ocean 	GISS	17.21	7.93
SSS 	  0.2134 	ocean 	levitus	0.22	0.97
SICE 	739.4472 	ocean 	GISS	0.34	2174.84
T 	151.6190 	zonal 	ERA40	38.89	3.89
U 	  3.1294 	zonal 	ERA40	12.07	0.25
V 	  2.6863 	zonal 	ERA40	8.25	0.32
Q 	101.8270 	zonal 	ERA40	29.41	3.46

Total Performance Index is : 169.4107
Partial PI (atm only) is   : 1.7528

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
c370 2076 2076

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 51.9444 	land 	CRU	25.13	2.06
msl 	  3.0328 	global 	COADS	11.69	0.25
qnet 	 18.2940 	ocean 	OAFLUX	14.24	1.28
tp 	 51.0274 	global 	CMAP	38.87	1.31
ewss 	 11.5222 	ocean 	DASILVA	4.03	2.85
nsss 	  7.1043 	ocean 	DASILVA	3.10	2.29
SST 	136.5597 	ocean 	GISS	17.21	7.93
SSS 	  0.2134 	ocean 	levitus	0.22	0.97
SICE 	739.4472 	ocean 	GISS	0.34	2174.84
T 	151.3391 	zonal 	ERA40	38.89	3.89
U 	  2.7914 	zonal 	ERA40	12.07	0.23
V 	  2.5990 	zonal 	ERA40	8.25	0.31
Q 	 99.3736 	zonal 	ERA40	29.41	3.37

Total Performance Index is : 169.3523
Partial PI (atm only) is   : 1.6314