Stable isotope records of Late Quaternary climate and hydrology from Mediterranean lakes: the ISOMED synthesis

Roberts, Neil; Jones, Matthew D.; Benkaddour, Abdelfattah; Eastwood, Warren J.; Filippi, Maria Letizia; Frogley, Michael R.; Lamb, Henry F.; Leng, Melanie J.; Reed, Jane M.; Stein, Mordechai; Stevens, L.; Garcés, Blas Lorenzo Valero; Zanchetta, Giovanni

doi:10.1016/j.quascirev.2008.09.005

Cited by 292 publications

(292 citation statements)

References 93 publications

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“…The Late Glacial to Holocene sequence of climate and environmental change from Lake Banyoles is consistent with that of the previous studies from the lake (Valero-Garcés et al 1998) and of other Mediterranean lacustrine records (Roberts et al 2008). There is a shift to higher δ 18 O calcite , reaching a maximum at 11.9 m in the core, which can be correlated to a similar rise in the previous isotope record at 6.1 m and a significant rise in Artemisia and decrease in Pinus, signifying the re-expansion of steppe conditions (Fig.…”

Section: Isotope Covariance and Facies Variabilitysupporting

confidence: 91%

“…This change to generally lower δ 18 O 19 values during wetter (and warmer) phases is seen across the majority of Mediterranean lake interglacial/interstadial records. On a glacial-interglacial timescale, temperature is considered a secondary driver of Mediterranean isotope composition compared to water balance, which is lower during cold, but highly arid glacial phases (Roberts et al 2008). …”

Section: Oxygen Isotope Composition Of Calcite From Lake Banyolesmentioning

confidence: 99%

“…The Iberian Peninsula, located west of the Mediterranean Basin, is a key location for understanding climate connections between the eastern and western Mediterranean (Roberts et al 2008) and interactions with North Atlantic climate dynamics. The understanding of past climate variability across the peninsula itself has improved considerably over the last two decades, employing a range of proxy methods and sources, including sequences from peatbogs (González-Sampériz et al 2006), speleothems (Stoll et al 2013), cave sediment (Fernández et al 2007), and lacustrine sediment (Reed et al 2001;Valero-Garcés et al 2004).…”

Section: Introductionmentioning

confidence: 99%

“…The lake is therefore characterised as a marl lake, which are typical of Mediterranean karst catchments (Leng and Marshall 2004;Roberts et al 2008). Average sediment accumulation rate was estimated to be about 1 mm yr -1 throughout the La Draga sequence (Pérez-Obiol and Julià 1994), although this value is subject to errors inherent in the previous age model.…”

Section: Introductionmentioning

confidence: 99%

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Western Mediterranean climate and environment since Marine Isotope Stage 3: a 50,000-year record from Lake Banyoles, Spain

et al. 2015

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We present new stable isotope (δ 18 O calcite and δ 13 C calcite ) and diatom data from a 67-m sediment core (BAN II) from Lake Banyoles, northeastern Spain. We reassessed the chronology of the sequence by correlating stable isotope data with a shorter U-series-dated record from the lake, confirming a sedimentological offset between the two cores and demonstrating that BAN II spans Marine Isotope Stages (MIS) 3 to 1. Through comparison with previous records, the multi-proxy data are used to improve understanding of palaeolimnological dynamics and, by inference, western Mediterranean climate and environmental change during the past ca. 50,000 years. Three main zones, defined by isotope and diatom data, correspond to the MIS. The basal zone (MIS 3) is characterised by fluctuating δ 18 O calcite and benthic diatom abundance, indicating a high degree of environmental and climate variability, concomitant with large lake-level changes. During the full glacial (MIS 2), relatively constant δ 18 O calcite and a poorly preserved planktonicdominated diatom assemblage suggest stability, and intermittently, unusually high lake level.In MIS 1, δ 18 O calcite and δ 13 C calcite initially transition to lower values, recording a pattern of Late Glacial to Holocene change that is similar to other Mediterranean records. This study suggests that Lake Banyoles responds limnologically to changes in the North Atlantic oceanatmosphere system and provides an important dataset from the Iberian Peninsula, a region in need of longer-term records that can be used to correlate between marine and terrestrial archives, and between the western and eastern Mediterranean.4

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Section: Isotope Covariance and Facies Variabilitysupporting

confidence: 91%

Section: Oxygen Isotope Composition Of Calcite From Lake Banyolesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Western Mediterranean climate and environment since Marine Isotope Stage 3: a 50,000-year record from Lake Banyoles, Spain

et al. 2015

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“…Comparison of d 18 O time series for three speleothems suggests that climate variability in southern Europe was in anti-phase with that in southwest Ireland throughout the Holocene (McDermott et al 1999). Lacustrine records across Europe are also responsive to increased rainfall (Roberts et al 2008) and show a significant shift in isotopic signals during the Holocene.…”

Section: Holocene Climate In the Middle East And Europe: Models And Omentioning

confidence: 95%

Past, present and future precipitation in the Middle East: insights from models and observations

Black

Brayshaw

Rambeau

2010

Phil. Trans. R. Soc. A.

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Anthropogenic changes in precipitation pose a serious threat to society-particularly in regions such as the Middle East that already face serious water shortages. However, climate model projections of regional precipitation remain highly uncertain. Moreover, standard resolution climate models have particular difficulty representing precipitation in the Middle East, which is modulated by complex topography, inland water bodies and proximity to the Mediterranean Sea. Here we compare precipitation changes over the twenty-first century against both millennial variability during the Holocene and interannual variability in the present day. In order to assess the climate model and to make consistent comparisons, this study uses new regional climate model simulations of the past, present and future in conjunction with proxy and historical observations. We show that the pattern of precipitation change within Europe and the Middle East projected by the end of the twenty-first century has some similarities to that which occurred during the Holocene. In both cases, a poleward shift of the North Atlantic storm track and a weakening of the Mediterranean storm track appear to cause decreased winter rainfall in southern Europe and the Middle East and increased rainfall further north. In contrast, on an interannual time scale, anomalously dry seasons in the Middle East are associated with a strengthening and focusing of the storm track in the north Mediterranean and hence wet conditions throughout southern Europe.

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The climate variability in northern Levant over the past 20,000 years

Cheng

Sinha

Verheyden

et al. 2015

Geophys. Res. Lett.

170

191

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The Levant constitutes an important region for assessing linkages between climate and societal changes throughout the course of human history. However, large uncertainties remain in our understanding of the region's hydroclimate variability under varying boundary conditions. Here we present a new high‐resolution, precisely dated speleothem oxygen‐carbon isotope and Sr/Ca records, spanning the last 20 ka from Jeita Cave, northern Levant. Our record reveals a higher (lower) precipitation‐evaporation (P‐E) balance during the Last Glacial Maximum and Bølling interstadial (Heinrich stadial 1). The early‐middle Holocene is characterized by a trend toward higher P‐E state, culminating between ~7 and 6 ka. The middle‐late Holocene is characterized by two millennial‐length drier periods during 5.3–4.2 and 2.8–1.4 ka. On submillennial time scale, the northern Levant climate variability is dominated by 500 year periodicity. Comparisons with the regional proxy records suggest persistent out‐of‐phase climate variability between the northern and southern Levant on a wide range of timescales.

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Stable isotope records of Late Quaternary climate and hydrology from Mediterranean lakes: the ISOMED synthesis

Cited by 292 publications

References 93 publications

Western Mediterranean climate and environment since Marine Isotope Stage 3: a 50,000-year record from Lake Banyoles, Spain

Western Mediterranean climate and environment since Marine Isotope Stage 3: a 50,000-year record from Lake Banyoles, Spain

Past, present and future precipitation in the Middle East: insights from models and observations

The climate variability in northern Levant over the past 20,000 years

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