Clim. Past, 15, 1809–1824, 2019 https://doi.org/10.5194/cp-15-1809-2019 © Author(s) 2019. This work is distributed under the Creative Commons Attribution 4.0 License. A comparison of drought information in early North American colonial documentary records and a high-resolution tree-ring-based reconstruction Sam White Department of History, Ohio State University, Columbus, OH 43125, USA Correspondence: Sam White (
[email protected]) Received: 4 January 2019 – Discussion started: 16 January 2019 Revised: 20 August 2019 – Accepted: 29 August 2019 – Published: 11 October 2019 Abstract. Historical documentary records contain valuable scriptions in written records (historical climatology). The lat- information on climate, weather, and their societal impacts ter approach has been employed with high reconstruction during the pre-instrumental period, but it may be difficult skill for regions and periods with abundant and consistent to assess the objectivity and reliability of this information, personal writings and official archives, including parts of Eu- particularly where the documentary record is incomplete or rope and China during the past six centuries. However, most the reliability of the information it contains is uncertain. This historical regions and periods lack such abundant and consis- article presents a comprehensive review of information re- tent written records before the instrumental period. In these lating to drought found in original written records concern- cases, historical observers tend to act as a “high-pass filter” ing all early European expeditions (1510–1610 CE) into the recording mostly extreme events and/or as degraded archives present-day US and Canada, and compares this information preserving scattered periodic climate proxies and descrip- with maps and time series of drought generated from the tree- tions (Bradley, 2015).