Timothy J Osborn

Biographic Data

ID6370438
NAMETimothy J Osborn
GIVEN NAMESTimothy J
FAMILY NAMEOsborn
SIGNATUREOSBORN T J
AFFILIATIONSUniversity of East Anglia
ORCID0000-0001-8425-6799
VERIFIEDYes
TOTAL WORKS14
TOTAL CITATIONS20
AUTHOR COUNT14
EDITOR COUNT0
FIRST PUBLICATION YEAR1998
LATEST PUBLICATION YEAR2026
H-INDEX3

  • Did changing climate in the tropical South Pacific contribute to the eastward migration and settlement of Polynesia

    Open AccessDavid Sear, Mark Peaple et al.ARTICLEJournal of Pacific Archaeology2026

    The migration of humans into the eastern Pacific was relatively rapid and focused around 900-1250 CE. Although the causes for this migration are varied, we put forward evidence to suggest that a change in the mean state of the tropical South Pacific from La Niña like to El Niño like conditions accompanied by an increase in climate “shocks” around the period of migration, could have created conditions to promote migration east into the Pacific. We…

  • Importance of beginning industrial-era climate simulations in the eighteenth century

    Open AccessAndrew Ballinger, Andrew Schurer et al.ARTICLEEnvironmental Research Letters2025

    Climate simulations of the industrial era typically start in 1850, using the first fifty years as a baseline for ‘pre-industrial’ climate. However, the period immediately prior to 1850 is of particular interest due to early human influence and heightened volcanic activity, the latter of which led to cooler global temperatures than those observed in the subsequent historical period. In this study, we present a suite of Earth system model simulatio…

  • Version 4 of the CRU TS monthly high-resolution gridded multivariate climate dataset

    Open AccessIan Harris, Timothy J Osborn et al.ARTICLEScientific Data2020

    CRU TS (Climatic Research Unit gridded Time Series) is a widely used climate dataset on a 0.5° latitude by 0.5° longitude grid over all land domains of the world except Antarctica. It is derived by the interpolation of monthly climate anomalies from extensive networks of weather station observations. Here we describe the construction of a major new version, CRU TS v4. It is updated to span 1901–2018 by the inclusion of additional station observat…

  • The global and regional impacts of climate change under representative concentration pathway forcings and shared socioeconomic pathway socioeconomic scenarios

    Open AccessNigel W Arnell, Jason Lowe et al.ARTICLEEnvironmental Research Letters2019

    This paper presents an evaluation of the global and regional consequences of climate change for heat extremes, water resources, river and coastal flooding, droughts, agriculture and energy use. It presents change in hazard and resource base under different rates of climate change (representative concentration pathways (RCP)), and socio-economic impacts are estimated for each combination of RCP and shared socioeconomic pathway. Uncertainty in the …

  • Keith R. Briffa: 1952-2017

    Open AccessMalcolm K Hughes, Edward R Cook et al.ARTICLETree-Ring Research2018

    Keith was

  • In Memoriam: Keith R Briffa, 1952–2017

    Open AccessTimothy J Osborn, P D Jones et al.ARTICLEThe Holocene2018References: 11

    Keith R Briffa was one of the most influential palaeoclimatologists of the last 30 years. His primary research interests lay in Late-Holocene climate change with a geographical emphasis on northern Eurasia. His greatest impact was in the field of dendroclimatology, a field that he helped to shape. His contributions have been seminal to the development of sound methods for tree-ring analysis and in their proper application to allow the interpretat…

  • Updated high‐resolution grids of monthly climatic observations – the CRU TS3 .10 Dataset

    Open AccessIan Harris, P D Jones et al.ARTICLEInternational Journal of…2014

    This paper describes the construction of an updated gridded climate dataset (referred to as CRU TS3 .10) from monthly observations at meteorological stations across the world's land areas. Station anomalies (from 1961 to 1990 means) were interpolated into 0.5° latitude/longitude grid cells covering the global land surface (excluding Antarctica), and combined with an existing climatology to obtain absolute monthly values. The dataset includes six …

  • Claim of solar influence is on thin ice: Are 11-year cycle solar minima associated with severe winters in Europe

    Open AccessGeert Jan van Oldenborgh, Jos de Laat et al.ARTICLEEnvironmental Research Letters2013

    A recent paper in Geophysical Research Letters, 'Solar influence on winter severity in central Europe', by Sirocko et al (2012 Geophys. Res. Lett. 39 L16704) claims that 'weak solar activity is empirically related to extremely cold winter conditions in Europe' based on analyses of documentary evidence of freezing of the River Rhine in Germany and of the Reanalysis of the Twentieth Century (20C). However, our attempt to reproduce these findings fa…

  • Exploring an ensemble approach to estimating skill in multiproxy palaeoclimate reconstructions

    Open AccessGerard van der Schrier, Timothy J Osborn et al.ARTICLEThe Holocene2007Cited by: 1

    This paper describes an approach that gives an estimate of the reconstructive skill of a proxy-based palaeoclimatological reconstruction. Uncertainties in proxy data are likely to be reflected in variations in reconstructive skill of the proxy-based climatic reconstructions. The method is based on making an ensemble of reconstructions, providing a probability distribution of each reconstruction estimate. The relative breadth of the distribution f…

  • Relationships between circulation strength and the variability of growing-season and cold-season climate in northern and central Europe

    Open AccessP D Jones, Keith R Briffa et al.ARTICLEThe Holocene2002Cited by: 3

    This paper examines variability in surface climate and the relationship with two circulation indices using recently produced 200–250 year long European daily and monthly climatic series. Assessments are made of the influence of circulation indices (zonal over western Europe and average pressure over central Europe) on regional temperature, precipitation and drought series for northern and central Europe. Changes in the circulation are shown to be…

  • Tree-ring width and density data around the Northern Hemisphere: Part 2, spatio-temporal variability and associated climate patterns

    Open AccessKeith R Briffa, Timothy J Osborn et al.ARTICLEThe Holocene2002Cited by: 6

    Patterns of summer temperature over the Northern Hemisphere, obtained from a calibration of a treering network, are presented for every year from 1600 to 1877. The network of tree-ring density chronologies is shown to exhibit spatially coherent modes of variability. These modes closely match summer half-year tempera ture variations, in terms of similar spatial patterns and similar temporal evolution during the instrumental period. They can, there…

  • Tree-ring width and density data around the Northern Hemisphere: Part 1, local and regional climate signals

    Open AccessKeith R Briffa, Timothy J Osborn et al.ARTICLEThe Holocene2002Cited by: 10

    A detailed description is presented of the statistical patterns of climate forcing of tree growth (annual maximum latewood density and ring-width time series), across a network of 387 specially selected conifer sites that circle the extra-tropical Northern Hemisphere. The in‘ uence of summer temperature dominates growth. A mean April–September response is optimum for describing the major forcing signal over the whole densito-metric network, thoug…

  • The Evolution of Climate Over the Last Millennium

    Open AccessP D Jones, Timothy J Osborn et al.ARTICLEScience2001

    Knowledge of past climate variability is crucial for understanding and modeling current and future climate trends. This article reviews present knowledge of changes in temperatures and two major circulation features—El Niño–Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO)—over much of the last 1000 years, mainly on the basis of high-resolution paleoclimate records. Average temperatures during the last three decades were likely…

  • Tree-ring based reconstructions of northern Patagonia precipitation since AD 1600

    Open AccessRicardo Villalba, Edward R Cook et al.ARTICLEThe Holocene1998References: 2

    Long-term reconstructions (400 years) of seasonal and annual precipitation variations were developed for northern Patagonia east of the Andes using a new set of 16 tree ring-width chronologies from Austrocedrus chilensis (D.Don) Endl. Reconstructions, which capture between 41 and 50% of the precipitation variance, show that the twentieth century contains the most extreme long periods of wetness and dryness in the past 400 years. Since about ad 19…