The MWP at the Tivoli North Bay of New York's Hudson Estuary
Sritairat, S., Peteet, D.M., Kenna, T.C., Sambrotto, R., Kurdyla, D. and Guilderson, T. 2012. A history of vegetation sediment and nutrient dynamics at Tivoli North Bay, Hudson Estuary, New York. Estuarine, Coastal and Shelf Science 102-103: 24-35.
In discussing their results, the six scientists say they first identified a pre-European settlement period (AD 826-1310) that had a "high percentage of Carya, a warmth-loving species (Fowells, 1965)," which finding, as they describe it, "supports an increase in temperature." In addition, at a depth dated to AD 1087 ± 72, they found a charcoal maximum, referring to it as "a feature that is also found in other Hudson river marsh cores at Piermont (Pederson et al., 2005) and Iona (Peteet et al., 2006)," which represents, in their words, "the warm, dry Medieval Warm Period (MWP)," which they further state is "likely a result of a regional Hudson Valley MWP recorded on a larger spatial scale in other parts of North America and the globe."
Acknowledging that "while there is a debate if the MWP is a global phenomenon as the warming is not synchronized at all sites around the globe," Sritairat et al. write that "many paleoclimatic records suggest widespread climatic anomalies, such as parts of Europe (Mangini et al., 2005), Tasmania (Cook et al., 1991), Asia (Yang et al., 2002), and Africa (Alin and Cohen, 2003) during the same time period." And so it is that the case for the existence of a global MWP continues to grow.
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Mangini, A., Spotl, C. and Verdes, P. 2005. Reconstruction of temperature in the Central Alps during the past 2000 yr from a delta(18)O stalagmite record. Earth and Planetary Science Letters 235: 741-751.
Pederson, D.C., Peteet, D.M., Kurdyla, D. and Guilderson, T. 2005. Medieval warming, little ice age, and European impact on the environment during the last millennium in the lower Hudson valley, New York, USA. Quaternary Research 63: 238-249.
Peteet, D.M., Peteet, D., Pederson, D., Kurdyla, D. and Guilderson, T. 2006. Hudson River paleoecology from marshes. In: Hudson River Fishes and Their Environment. American Fisheries Society Monograph.
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