Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1931 1931

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 23.0456 	land 	CRU	25.13	0.91
msl 	  2.5372 	global 	COADS	11.69	0.21
qnet 	 19.9582 	ocean 	OAFLUX	14.24	1.40
tp 	 39.5010 	global 	CMAP	38.87	1.01
ewss 	  8.6107 	ocean 	DASILVA	4.03	2.13
nsss 	  5.8762 	ocean 	DASILVA	3.10	1.89
SST 	 30.1947 	ocean 	GISS	17.21	1.75
SSS 	  0.1367 	ocean 	levitus	0.22	0.62
SICE 	2413.1364 	ocean 	GISS	0.34	7097.46
T 	 21.8479 	zonal 	ERA40	38.89	0.56
U 	  3.9902 	zonal 	ERA40	12.07	0.33
V 	  2.7482 	zonal 	ERA40	8.25	0.33
Q 	 30.7017 	zonal 	ERA40	29.41	1.04

Total Performance Index is : 546.8953
Partial PI (atm only) is   : 0.6271

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1931 1931

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 21.4294 	land 	CRU	25.13	0.85
msl 	  2.5372 	global 	COADS	11.69	0.21
qnet 	 18.7386 	ocean 	OAFLUX	14.24	1.31
tp 	 39.5010 	global 	CMAP	38.87	1.01
ewss 	  8.9686 	ocean 	DASILVA	4.03	2.22
nsss 	  5.5693 	ocean 	DASILVA	3.10	1.79
SST 	 30.1947 	ocean 	GISS	17.21	1.75
SSS 	  0.1367 	ocean 	levitus	0.22	0.62
SICE 	2413.1364 	ocean 	GISS	0.34	7097.46
T 	 20.0363 	zonal 	ERA40	38.89	0.51
U 	  3.7133 	zonal 	ERA40	12.07	0.30
V 	  2.6110 	zonal 	ERA40	8.25	0.31
Q 	 23.5627 	zonal 	ERA40	29.41	0.80

Total Performance Index is : 546.8569
Partial PI (atm only) is   : 0.5700