Table 1. Magnitude of Variance Reduction Obtained With the Common 2-D and the New 3-D SSB Correction Models Relative to the Reduction Obtained When Applying a 1-D SSB Correctiona

Jason-1 SSB Models	Relative SLA Variance Reduction (cm2)	Relative Collinear DeltaSSH Variance Reduction (cm2)
	Validation Data Set	Validation Data Set
	2002	2003	2004	2002	2003	2004
2002 version, 2-D SSB	1.37	1.62	1.88	2.80	2.98	3.20
2002 version, 3-D SSB	2.83	2.65	3.26	4.18	4.51	4.82
2002 version, difference (3-D-2-D)	1.46	1.03	1.38	1.38	1.53	1.62
2004 version, 2-D SSB	1.32	1.72	2.06	2.79	2.97	3.26
2004 version, 3-D SSB	2.47	2.74	3.56	3.89	4.33	4.74
2004 version, difference (3-D-2-D)	1.15	1.02	1.50	1.10	1.36	1.48
	SLA w/o SSB (cm2)	Collinear DeltaSSH w/o SSB (cm2)
Total variance	120.99	121.08	118.72	82.22	83.97	81.90
Variance explained by 1-D SSB	22.55	23.48	21.88	18.94	18.37	17.24

aEach estimate is for a full year of global Jason-1 altimeter data. The results are calculated using both the Jason-1 sea level anomaly (SLA) and collinear (10 days) sea surface height (SSH) difference data sets for the years indicated. Models were developed using year 2002 or 2004 data as indicated. Also provided are the total variance of both SLA and SSH differences without (w/o) sea state bias (SSB) correction and the variance explained by the 1-D SSB model computed as ­3.8% SWH.