Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
vhis 1952 1952

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 23.4727 	land 	CRU	25.13	0.93
msl 	  2.3530 	global 	COADS	11.69	0.20
qnet 	 20.9003 	ocean 	OAFLUX	14.24	1.46
tp 	 38.4341 	global 	CMAP	38.87	0.98
ewss 	  8.6368 	ocean 	DASILVA	4.03	2.14
nsss 	  6.1570 	ocean 	DASILVA	3.10	1.98
SST 	 32.6746 	ocean 	GISS	17.21	1.89
SSS 	  0.1517 	ocean 	levitus	0.22	0.68
SICE 	2840.8606 	ocean 	GISS	0.34	8355.47
T 	 22.7908 	zonal 	ERA40	38.89	0.58
U 	  3.0858 	zonal 	ERA40	12.07	0.25
V 	  2.5981 	zonal 	ERA40	8.25	0.31
Q 	 31.2908 	zonal 	ERA40	29.41	1.06

Total Performance Index is : 643.6869
Partial PI (atm only) is   : 0.6157

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
vhis 1952 1952

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 23.1722 	land 	CRU	25.13	0.92
msl 	  2.3530 	global 	COADS	11.69	0.20
qnet 	 19.7614 	ocean 	OAFLUX	14.24	1.38
tp 	 38.4341 	global 	CMAP	38.87	0.98
ewss 	  8.7538 	ocean 	DASILVA	4.03	2.17
nsss 	  5.6415 	ocean 	DASILVA	3.10	1.81
SST 	 32.6746 	ocean 	GISS	17.21	1.89
SSS 	  0.1517 	ocean 	levitus	0.22	0.68
SICE 	2840.8606 	ocean 	GISS	0.34	8355.47
T 	 21.1497 	zonal 	ERA40	38.89	0.54
U 	  2.8795 	zonal 	ERA40	12.07	0.23
V 	  2.4895 	zonal 	ERA40	8.25	0.30
Q 	 24.4720 	zonal 	ERA40	29.41	0.83

Total Performance Index is : 643.6461
Partial PI (atm only) is   : 0.5714