5,000 Years of Great Basin Temperatures Derived from Tree Rings

Der var meget varmere i Skandinavien, både i Jesus tid og tidlig middelalder

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19/06/2014

Der var meget varmere i Skandinavien, både i Jesus tid og tidlig middelalder. Vi bliver fyldt med løgn om hockey stick og rekordtemperaturer. Det underlige er imidlertid at de bedste og rigeste tider mennesker har haft på denne planet har været i varmeperioder - jo varmere jo bedre. Det handler om overbefolkning ikke klima.  Der var 120 PPM mindre Co2 for 1000 år siden og alligevel varmere.

lidt uddrag: Based on the results of their painstaking work, the four researchers report that "the inferred temperature of the modern period was exceeded twice in the Common Era: +1.69°C in the mid first century AD (centered on AD 33) and +1.58°C in the mid seventh century (centered on AD 634)," while "the coldest interval is in the mid to late fifteenth century AD (centered on AD 1469)." And "consistent with these results and suggesting that some of the departures from mean conditions are at least hemispheric in scale," 

" they say that"estimates of northern Scandinavian summer temperatures indicate nearly identical dates for their warmest and coldest 30-year periods over the last ~2,000 years, at AD 21-50 and AD 1451-1480 respectively,"

citing Esper et al. (2012). In addition, they say that other paleotemperature proxy archives, "such as lacustrine and meadow sediment cores, packrat middens, and glacial moraine dynamics (Thompson et al., 1994; Clark and Gillespie, 1997; Smith and Betancourt, 2006; Reinemannet al., 2009) are in general agreement with our results, recording higher temperatures during the middle Holocene."