Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1977 1977

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 17.7212 	land 	CRU	25.13	0.70
msl 	  1.6611 	global 	COADS	11.69	0.14
qnet 	 20.5580 	ocean 	OAFLUX	14.24	1.44
tp 	 41.2353 	global 	CMAP	38.87	1.06
ewss 	  8.3290 	ocean 	DASILVA	4.03	2.06
nsss 	  5.2336 	ocean 	DASILVA	3.10	1.68
SST 	 33.5200 	ocean 	GISS	17.21	1.94
SSS 	  0.1373 	ocean 	levitus	0.22	0.62
SICE 	2348.5323 	ocean 	GISS	0.34	6907.44
T 	 21.5443 	zonal 	ERA40	38.89	0.55
U 	  2.7603 	zonal 	ERA40	12.07	0.22
V 	  2.3560 	zonal 	ERA40	8.25	0.28
Q 	 26.8724 	zonal 	ERA40	29.41	0.91

Total Performance Index is : 532.2338
Partial PI (atm only) is   : 0.5514

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1977 1977

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 16.0897 	land 	CRU	25.13	0.64
msl 	  1.6611 	global 	COADS	11.69	0.14
qnet 	 19.4017 	ocean 	OAFLUX	14.24	1.36
tp 	 41.2353 	global 	CMAP	38.87	1.06
ewss 	  8.4086 	ocean 	DASILVA	4.03	2.08
nsss 	  5.0053 	ocean 	DASILVA	3.10	1.61
SST 	 33.5200 	ocean 	GISS	17.21	1.94
SSS 	  0.1373 	ocean 	levitus	0.22	0.62
SICE 	2348.5323 	ocean 	GISS	0.34	6907.44
T 	 20.3544 	zonal 	ERA40	38.89	0.52
U 	  2.5771 	zonal 	ERA40	12.07	0.21
V 	  2.2352 	zonal 	ERA40	8.25	0.27
Q 	 20.6945 	zonal 	ERA40	29.41	0.70

Total Performance Index is : 532.1992
Partial PI (atm only) is   : 0.5057