Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1918 1918

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 30.5610 	land 	CRU	25.13	1.21
msl 	  2.6909 	global 	COADS	11.69	0.23
qnet 	 20.2472 	ocean 	OAFLUX	14.24	1.42
tp 	 35.9739 	global 	CMAP	38.87	0.92
ewss 	  8.1221 	ocean 	DASILVA	4.03	2.01
nsss 	  5.7980 	ocean 	DASILVA	3.10	1.87
SST 	 30.0412 	ocean 	GISS	17.21	1.74
SSS 	  0.1741 	ocean 	levitus	0.22	0.79
SICE 	2511.1356 	ocean 	GISS	0.34	7385.69
T 	 27.5315 	zonal 	ERA40	38.89	0.70
U 	  4.1364 	zonal 	ERA40	12.07	0.34
V 	  2.2494 	zonal 	ERA40	8.25	0.27
Q 	 34.9127 	zonal 	ERA40	29.41	1.18

Total Performance Index is : 569.1053
Partial PI (atm only) is   : 0.6928

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1918 1918

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 28.6035 	land 	CRU	25.13	1.13
msl 	  2.6909 	global 	COADS	11.69	0.23
qnet 	 19.0020 	ocean 	OAFLUX	14.24	1.33
tp 	 35.9739 	global 	CMAP	38.87	0.92
ewss 	  7.9163 	ocean 	DASILVA	4.03	1.96
nsss 	  5.3067 	ocean 	DASILVA	3.10	1.71
SST 	 30.0412 	ocean 	GISS	17.21	1.74
SSS 	  0.1741 	ocean 	levitus	0.22	0.79
SICE 	2511.1356 	ocean 	GISS	0.34	7385.69
T 	 25.5006 	zonal 	ERA40	38.89	0.65
U 	  3.8550 	zonal 	ERA40	12.07	0.31
V 	  2.1243 	zonal 	ERA40	8.25	0.25
Q 	 27.7525 	zonal 	ERA40	29.41	0.94

Total Performance Index is : 569.0500
Partial PI (atm only) is   : 0.6328