Please use this identifier to cite or link to this item: https://doi.org/10.5194/cp-8-1551-2012
DC FieldValue
dc.titleConstraining the temperature history of the past millennium using early instrumental observations
dc.contributor.authorBrohan, P
dc.contributor.authorAllan, R
dc.contributor.authorFreeman, E
dc.contributor.authorWheeler, D
dc.contributor.authorWilkinson, C
dc.contributor.authorWilliamson, F
dc.date.accessioned2020-11-10T00:34:24Z
dc.date.available2020-11-10T00:34:24Z
dc.date.issued2012
dc.identifier.citationBrohan, P, Allan, R, Freeman, E, Wheeler, D, Wilkinson, C, Williamson, F (2012). Constraining the temperature history of the past millennium using early instrumental observations. Climate of the Past 8 (5) : 1551-1563. ScholarBank@NUS Repository. https://doi.org/10.5194/cp-8-1551-2012
dc.identifier.issn18149324
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/183221
dc.description.abstractThe current assessment that twentieth-century global temperature change is unusual in the context of the last thousand years relies on estimates of temperature changes from natural proxies (tree-rings, ice-cores, etc.) and climate model simulations. Confidence in such estimates is limited by difficulties in calibrating the proxies and systematic differences between proxy reconstructions and model simulations. As the difference between the estimates extends into the relatively recent period of the early nineteenth century it is possible to compare them with a reliable instrumental estimate of the temperature change over that period, provided that enough early thermometer observations, covering a wide enough expanse of the world, can be collected. One organisation which systematically made observations and collected the results was the English East India Company (EEIC), and their archives have been preserved in the British Library. Inspection of those archives revealed 900 log-books of EEIC ships containing daily instrumental measurements of temperature and pressure, and subjective estimates of wind speed and direction, from voyages across the Atlantic and Indian Oceans between 1789 and 1834. Those records have been extracted and digitised, providing 273 000 new weather records offering an unprecedentedly detailed view of the weather and climate of the late eighteenth and early nineteenth centuries. The new thermometer observations demonstrate that the large-scale temperature response to the Tambora eruption and the 1809 eruption was modest (perhaps 0.5 °C). This provides an out-of-sample validation for the proxy reconstructions - supporting their use for longer-term climate reconstructions. However, some of the climate model simulations in the CMIP5 ensemble show much larger volcanic effects than this - such simulations are unlikely to be accurate in this respect. © Author(s) 2012.
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceUnpaywall 20201031
dc.subjectclimate modeling
dc.subjectglobal climate
dc.subjecthistorical record
dc.subjectpaleotemperature
dc.subjectproxy climate record
dc.subjectreconstruction
dc.subjecttemperature profile
dc.subjecttwentieth century
dc.subjectvolcanic eruption
dc.subjectwind velocity
dc.typeArticle
dc.contributor.departmentASIA RESEARCH INSTITUTE
dc.description.doi10.5194/cp-8-1551-2012
dc.description.sourcetitleClimate of the Past
dc.description.volume8
dc.description.issue5
dc.description.page1551-1563
Appears in Collections:Staff Publications
Elements

Show simple item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_5194_cp-8-1551-2012.pdf2.18 MBAdobe PDF

OPEN

NoneView/Download

SCOPUSTM   
Citations

40
checked on May 12, 2022

WEB OF SCIENCETM
Citations

36
checked on Sep 23, 2021

Page view(s)

145
checked on May 12, 2022

Google ScholarTM

Check

Altmetric


This item is licensed under a Creative Commons License Creative Commons