Temperature variability in the Iberian Range since 1602 inferred from tree-ring records

Tejedor, Ernesto; Saz, Miguel Ángel; Cuadrat, José María; Esper, Jan; Luis, Martín de

doi:10.5194/cp-13-93-2017

Cited by 28 publications

(25 citation statements)

References 62 publications

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“…The impact of natural external forcing such as solar variability and volcanic eruptions on climate variability is of increasing interest (e.g. Atwood et al 2016, Otto-Bliesner et al 2016, Rao et al 2017, Cook et al 2007, Anchukaitis et al 2017, Tejedor et al 2017. Solar variability has been found to coincide with low-growth periods in Northern Hemisphere trees (e.g.…”

Section: Discussionmentioning

confidence: 99%

Lack of cool, not warm, extremes distinguishes late 20th Century climate in 979-year Tasmanian summer temperature reconstruction

Allen

Cook

Evans³

et al. 2018

Environ. Res. Lett.

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Very few annually resolved millennial-length temperature reconstructions exist for the Southern Hemisphere. Here we present four 979-year reconstructions for southeastern Australia for the austral summer months of December-February. Two of the reconstructions are based on the Australian Water Availability Project dataset and two on the Berkeley Earth Surface Temperature dataset. For each climate data set, one reconstruction is based solely on Lagarostrobos franklinii (restricted reconstructions) while the other is based on multiple Tasmanian conifer species (unrestricted reconstructions). Each reconstruction calibrates ∼50−60% of the variance in the temperature datasets depending on the number of tree-ring records available for the reconstruction. We found little difference in the temporal variability of the reconstructions, although extremes are amplified in the restricted reconstructions relative to the unrestricted reconstructions. The reconstructions highlight the occurrence of numerous individual years, especially in the 15th−17th Centuries, for which temperatures were comparable with those of the late 20th Century. The 1950−1999 period, however, stands out as the warmest 50-year period on average for the past 979 years, with a sustained shift away from relatively low mean temperatures, the length of which is unique in the 979-year record. The reconstructions are strongly and positively related to temperatures across the southeast of the Australian continent, negatively related to temperatures in the north and northeast of the continent, and uncorrelated with temperatures in the west. The lack of a strong relationship with temperatures across the continent highlights the necessity of a sub-regional focus for Australasian temperature reconstructions.

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Section: Discussionmentioning

confidence: 99%

Lack of cool, not warm, extremes distinguishes late 20th Century climate in 979-year Tasmanian summer temperature reconstruction

Allen

Cook

Evans³

et al. 2018

Environ. Res. Lett.

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“…Abundant literature and palaeolimnological studies in the Iberian Peninsula infer a decrease in temperature during the whole LIA (Tejedor et al ., ), which should cause higher δ 18 O values as recorded by carbonate sediments in our sequence. However, these shifts towards more positive δ 18 O values are constrained to specific depths in our sequence, instead of showing a net package of positive δ 18 O values as expected for the LIA.…”

Section: Discussionmentioning

confidence: 59%

Sedimentary response of lake El Tobar, Spain, to climate: lake level changes after the Maunder Minimum

López‐Blanco¹,

Andrews

Dennis

et al. 2016

J Quaternary Science

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Lake level reconstructions from a littoral core in lake El Tobar, Spain, are presented for the last 350 years. These are based on plant macrofossils and stable isotopes from lacustrine carbonates. Our data suggest five episodes of advance and regression of the shoreline coupled with changes in water retention in the lake. A low lake level and high water renewal episode at ca. AD 1650–1715 is indicated by oxidized facies with abundant remains from terrestrial/marsh plant macrofossils and low d18O and d13C values. A fluctuating lake level episode at ca. AD 1715–1772 during changing climatic conditions in the Little Ice Age (LIA) caused periods of erosion and sediment deposition that intermittently blocked the lake outlet, resulting in more positive d18O and d13C values. The lake became progressively more closed with increased level in the wet years at the end of the LIA (ca. AD 1772–1850). During the Dalton Minimum, d13C values reached a minimum, indicating low productivity, but increased after this with development of submerged Chara. From ca. AD 1850 to 1960 lake levels were high but are marked by changes in marsh communities, mainly the shift from Juncus to Typha (ca. AD 1850–1960) predominance, which indicates low and high levels, respectively

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“…To remove biological trends and other perturbation effects in radial growth, the latewood series were standardized following the approach detailed in Tejedor et al [2017]. To remove biological trends and other perturbation effects in radial growth, the latewood series were standardized following the approach detailed in Tejedor et al [2017].…”

Section: Chronology Developmentmentioning

confidence: 99%

“…To evaluate coherence within the northeastern Spanish network, we calculated a correlation matrix of the 22 detrended latewood site chronologies. To remove biological trends and other perturbation effects in radial growth, the latewood series were standardized following the approach detailed in Tejedor et al [2017]. This standardization method is based on the principles of regional curve standardization [Mitchell, 1967;Briffa et al, 1992;Esper et al, 2003].…”

Section: Chronology Developmentmentioning

confidence: 99%

“…In fact, several paleoclimatic studies have led to a deeper understanding of temperature and precipitation dynamics in central and northern Europe over past millennia [Büntgen et al, 2005[Büntgen et al, , 2011Esper et al, 2012]. In southern Europe, temperature reconstructions have also contributed to increase our knowledge on climate dynamics [Büntgen et al, 2008;Dorado-Liñán et al, 2014;Luterbacher et al, 2016;Tejedor et al, 2017].…”

Section: Introductionmentioning

confidence: 99%

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Summer drought reconstruction in northeastern Spain inferred from a tree ring latewood network since 1734

Tejedor

Saz

Esper

et al. 2017

Geophysical Research Letters

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Drought recurrence in the Mediterranean is regarded as a fundamental factor for socioeconomic development and the resilience of natural systems in context of global change. However, knowledge of past droughts has been hampered by the absence of high‐resolution proxies. We present a drought reconstruction for the northeast of the Iberian Peninsula based on a new dendrochronology network considering the Standardized Evapotranspiration Precipitation Index (SPEI). A total of 774 latewood width series from 387 trees of P. sylvestris and P. uncinata was combined in an interregional chronology. The new chronology, calibrated against gridded climate data, reveals a robust relationship with the SPEI representing drought conditions of July and August. We developed a summer drought reconstruction for the period 1734–2013 representative for the northeastern and central Iberian Peninsula. We identified 16 extremely dry and 17 extremely wet summers and four decadal scale dry and wet periods, including 2003–2013 as the driest episode of the reconstruction.

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Temperature variability in the Iberian Range since 1602 inferred from tree-ring records

Cited by 28 publications

References 62 publications

Lack of cool, not warm, extremes distinguishes late 20th Century climate in 979-year Tasmanian summer temperature reconstruction

Lack of cool, not warm, extremes distinguishes late 20th Century climate in 979-year Tasmanian summer temperature reconstruction

Sedimentary response of lake El Tobar, Spain, to climate: lake level changes after the Maunder Minimum

Summer drought reconstruction in northeastern Spain inferred from a tree ring latewood network since 1734

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