This has led to the search for data that is based on historical, biological and geological records that, if properly applied, could be combined with recent satellite data, to extend the climate record from the seasonal to interannual periods to the millenial periods. Recent work has been published which extends the El Nino Southern Oscillation record back some 450 years.
Dendrochronological records help to extend long term climate records back to the millenial regimes.
Geological records provide data for climate change on our planet from thousands to millions of years in the past. If these multidisciplinary datasets can be fused in some manner, they may provide a key to the understanding of longer term climate changes that have occurred over the history of our planet. In the course of research for this dissertation, the author will attempt to compare and combine datasets from the satellite, dendrochronological, and geological regimes to study the course of climate change over a ten-thousand year period of our planet. By doing so, the author will seek to understand the climate changes in view of more deterministic processes, whose combinatorics leads to the apparent chaotic climate changes throughout the ages. Interview polar researchers knowledgeable in the field.