10.6084/m9.figshare.977937.v3
Ronan Connolly
Ronan
Connolly
Global temperature changes of the last millennium - Supplementary Information
figshare
2014
Global temperature trends
Temperature proxies
Medieval Warm Period
Little Ice Age
Current Warm Period
Millennial reconstructions
Paleoclimatology
Climate Science
2014-10-11 13:57:51
Dataset
https://figshare.com/articles/dataset/Global_temperature_changes_of_the_last_millennium_Supplementary_Information/977937
<p>Supplementary information dataset for the following article:</p>
<p>R. Connolly and M. Connolly (2014). <em>Global temperature changes of the last millennium</em>. Open Peer Rev. J., 16 (Clim. Sci.), ver 0.1 (non peer-reviewed draft)</p>
<p>19 different global temperature trend estimates for the last 1000 years constructed from temperature proxies.</p>
<p> </p>
<p><strong>Abstract of article</strong></p>
<p>A review of the various global (or hemispheric) millennial temperature reconstructions was carried out. Unlike previous reviews, technical analyses presented via internet blogs were considered as well as the conventional peer-reviewed literature.</p>
<p>There was a remarkable consistency between all of the reconstructions in identifying three climatically distinct periods. These consisted of two relatively warm periods – the “Medieval Warm Period” (c. 800-1200 AD) and the “Current Warm Period” (c. 1900 AD on) – and a relatively cool period – the “Little Ice Age” (c. 1500-1850 AD). Disagreement seems to centre over how the two warm periods compare to each other, and exactly how cold, and continuous the cool period was.</p>
<p>However, many of the assumptions behind the reconstructions have still not been adequately justified. In addition, there are substantial inconsistencies in the data on which they are based, and between proxy-based and thermometer-based estimates.</p>