Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vhis 1972 1972

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 26.5748 	land 	CRU	25.13	1.05
msl 	  2.1754 	global 	COADS	11.69	0.18
qnet 	 20.2762 	ocean 	OAFLUX	14.24	1.42
tp 	 32.3948 	global 	CMAP	38.87	0.83
ewss 	  8.4062 	ocean 	DASILVA	4.03	2.08
nsss 	  6.6689 	ocean 	DASILVA	3.10	2.15
SST 	 35.3472 	ocean 	GISS	17.21	2.05
SSS 	  0.1863 	ocean 	levitus	0.22	0.84
SICE 	2836.3835 	ocean 	GISS	0.34	8342.30
T 	 26.3290 	zonal 	ERA40	38.89	0.67
U 	  4.2154 	zonal 	ERA40	12.07	0.34
V 	  2.8767 	zonal 	ERA40	8.25	0.34
Q 	 37.8998 	zonal 	ERA40	29.41	1.28

Total Performance Index is : 642.7330
Partial PI (atm only) is   : 0.6700

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vhis 1972 1972

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 25.5877 	land 	CRU	25.13	1.01
msl 	  2.1754 	global 	COADS	11.69	0.18
qnet 	 19.0834 	ocean 	OAFLUX	14.24	1.34
tp 	 32.3948 	global 	CMAP	38.87	0.83
ewss 	  8.0903 	ocean 	DASILVA	4.03	2.00
nsss 	  5.8891 	ocean 	DASILVA	3.10	1.89
SST 	 35.3472 	ocean 	GISS	17.21	2.05
SSS 	  0.1863 	ocean 	levitus	0.22	0.84
SICE 	2836.3835 	ocean 	GISS	0.34	8342.30
T 	 25.0039 	zonal 	ERA40	38.89	0.64
U 	  4.0403 	zonal 	ERA40	12.07	0.33
V 	  2.7527 	zonal 	ERA40	8.25	0.33
Q 	 31.6656 	zonal 	ERA40	29.41	1.07

Total Performance Index is : 642.6776
Partial PI (atm only) is   : 0.6271