ERS-1 Blended Sea Level Anomaly

Empirical orthogonal functions are used to analyze a set of error maps constructed from the difference between monthly mean ERS-1 altimeter and tide gauge measurements at 30 island locations in the central and western Pacific. The large-scale, low-frequency components indentified by this analysis are interpolated and then added to the original altimeter data to produce a set of blended island/alitmeter sea level maps which are more accurate and detailed than those produced from either data set alone. For more information, see Miller et al. Blending ERS-1 Altimetry and Tide-Gauge Data, Eos Trans. AGU 74, 16, 1993.

The data are here