Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1942 1942

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 18.9595 	land 	CRU	25.13	0.75
msl 	  1.6311 	global 	COADS	11.69	0.13
qnet 	 20.1460 	ocean 	OAFLUX	14.24	1.41
tp 	 31.3425 	global 	CMAP	38.87	0.80
ewss 	  7.9710 	ocean 	DASILVA	4.03	1.97
nsss 	  5.4283 	ocean 	DASILVA	3.10	1.75
SST 	 24.9847 	ocean 	GISS	17.21	1.45
SSS 	  0.1290 	ocean 	levitus	0.22	0.58
SICE 	2449.0691 	ocean 	GISS	0.34	7203.14
T 	 19.7861 	zonal 	ERA40	38.89	0.50
U 	  2.7900 	zonal 	ERA40	12.07	0.23
V 	  2.2428 	zonal 	ERA40	8.25	0.27
Q 	 25.5894 	zonal 	ERA40	29.41	0.87

Total Performance Index is : 554.9115
Partial PI (atm only) is   : 0.5071

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1942 1942

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 17.2871 	land 	CRU	25.13	0.68
msl 	  1.6311 	global 	COADS	11.69	0.13
qnet 	 18.9747 	ocean 	OAFLUX	14.24	1.33
tp 	 31.3425 	global 	CMAP	38.87	0.80
ewss 	  8.6609 	ocean 	DASILVA	4.03	2.14
nsss 	  4.6147 	ocean 	DASILVA	3.10	1.48
SST 	 24.9847 	ocean 	GISS	17.21	1.45
SSS 	  0.1290 	ocean 	levitus	0.22	0.58
SICE 	2449.0691 	ocean 	GISS	0.34	7203.14
T 	 17.8761 	zonal 	ERA40	38.89	0.45
U 	  2.5383 	zonal 	ERA40	12.07	0.21
V 	  2.0955 	zonal 	ERA40	8.25	0.25
Q 	 18.5973 	zonal 	ERA40	29.41	0.63

Total Performance Index is : 554.8669
Partial PI (atm only) is   : 0.4500