Citazione Originariamente Scritto da clayco Visualizza Messaggio
Iòl grafico di Esper evidenzia un netto periodo caldo medievale, e termina con valori inferiori a quelli medievali, che sono sottostimati rispetto ai valori strumentali
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Certo che non ti manca la diabolica perseveranza, eh(tautologia....)

Qui è sempre Esper con Cook e la D'Arrigo, nel 2004 (che è successivo al 2002).

"The Northern Hemisphere (NH) temperature reconstruction published by Esper, Cook, and Schweingruber (ECS) in 2002 is revisited in order to strengthen and clarify its interpretation."

NH extra-tropical, dendro.



Cook ER, Esper J, D’Arrigo R (2004) Extra-tropical Northern Hemisphere temperature variability over the past 1000 years. Quaternary Science Reviews 23, 2063-2074

“[…] Persistently above-average temperatures in the AD 960–1050 interval also suggest the largescale occurrence of a ‘‘Medieval Warm Period’’ in the NH extra-tropics. However, declining site availability and low withinchronology tree-ring replication prior to AD 1200 weakens this interpretation considerably. […]
After recalibration to take this property into account, annual temperatures up to AD 2000 over extra-tropical NH land areas have probably exceeded by about 0.3 °C the warmest previous interval over the past 1162 years.”