Some of the sites were blogs, others are political sites, not scientific ones. And the last one does not make a statement concerning whether the MWP was global.
Papers on the MWP as Global Event AGW Observer
This list contains papers on the medieval warm period (MWP) with emphasis on global analysis. The list is not complete, and will most likely be updated in the future in order to make it more thorough and more representative.
UPDATE (August 19, 2010): Ljungqvist (2009) added, thanks to Darius for pointing it out (see the comment section below).
UPDATE (May 17, 2010): Trouet et al. (2009) added.
UPDATE (January 20, 2010): Osborn & Briffa (2006) added.
Global Signatures and Dynamical Origins of the Little Ice Age and Medieval Climate Anomaly – Mann et al. (2009) “Global temperatures are known to have varied over the past 1500 years, but the spatial patterns have remained poorly defined. We used a global climate proxy network to reconstruct surface temperature patterns over this interval. The Medieval period is found to display warmth that matches or exceeds that of the past decade in some regions, but which falls well below recent levels globally.” [Link to PDF]
Centennial Variations of the Global Monsoon Precipitation in the Last Millennium: Results from ECHO-G Model – Liu et al. (2009) “The authors investigate how the global monsoon (GM) precipitation responds to the external and anthropogenic forcing in the last millennium by analyzing a pair of control and forced millennium simulations with the ECHAM and the global Hamburg Ocean Primitive Equation (ECHO-G) coupled ocean–atmosphere model. … Conversely, strong GM was simulated during the model Medieval Warm Period (ca. 1030–1240). … The simulated change of GM in the last 30 yr has a spatial pattern that differs from that during the Medieval Warm Period, suggesting that global warming that arises from the increases of greenhouse gases and the input solar forcing may have different effects on the characteristics of GM precipitation.”
Persistent Positive North Atlantic Oscillation Mode Dominated the Medieval Climate Anomaly – Trouet et al. (2009) “The Medieval Climate Anomaly (MCA) was the most recent pre-industrial era warm interval of European climate, yet its driving mechanisms remain uncertain. We present here a 947-year-long multidecadal North Atlantic Oscillation (NAO) reconstruction and find a persistent positive NAO during the MCA. Supplementary reconstructions based on climate model results and proxy data indicate a clear shift to weaker NAO conditions into the Little Ice Age (LIA). Globally distributed proxy data suggest that this NAO shift is one aspect of a global MCA-LIA climate transition that probably was coupled to prevailing La Niña–like conditions amplified by an intensified Atlantic meridional overturning circulation during the MCA.” [Link to PDF]
