Sentences with phrase «historical sea ice cover»

Not exact matches

«Anecdotal data» is the term that climate scientists (IPCC, etc.) assign to what tony b calls «historical evidence» This can be old sea charts, notes by explorers, crop records, old chronicals of mines being covered by advancing ice and snow, etc..

When compared (validated) against historical sea ice observations it was found that the reconstruction not only had a dominant temperature - related signal, but that the proxy - based reconstruction also had a second signal which corresponded with variations in sea ice cover (extent), therefore confirming the 2nd network signal was a proxy for Arctic sea ice cover (as shown in figure 1).