Stuart Umbo
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View article: Speleothem evidence for Late Miocene extreme Arctic amplification – an analogue for near-future anthropogenic climate change?
Speleothem evidence for Late Miocene extreme Arctic amplification – an analogue for near-future anthropogenic climate change? Open
The Miocene provides an excellent climatic analogue for near-future runaway anthropogenic warming, with atmospheric CO2 concentrations and global average temperatures similar to those projected for the coming century under extreme-emission…
View article: Newly dated permafrost deposits and their paleoecological inventory reveal an Eemian much warmer than today in Arctic Siberia
Newly dated permafrost deposits and their paleoecological inventory reveal an Eemian much warmer than today in Arctic Siberia Open
In this study, we integrate geochronological, cryolithological, paleoecological, and modeling data to reconstruct the Last Interglacial (LIG) climate around the New Siberian Islands, revealing significantly warmer conditions compared to to…
View article: Reconstruction of Holocene and Last Interglacial vegetation dynamics and wildfire activity in southern Siberia
Reconstruction of Holocene and Last Interglacial vegetation dynamics and wildfire activity in southern Siberia Open
Wildfires are a rapidly increasing threat to boreal forests. While our understanding of the drivers behind wildfires and their environmental impact is growing, it is mostly limited to the observational period. Here we focus on the boreal f…
View article: Interglacial climate, wildfire, and vegetation dynamics in southeastern Siberia over the last 580,000 years
Interglacial climate, wildfire, and vegetation dynamics in southeastern Siberia over the last 580,000 years Open
Wildfires are a rapidly increasing threat to boreal forests. Our current understanding of the drivers behind wildfires and their environmental impact, while growing, is based mostly on data that is limited to the observational period. …
View article: A six-million-year speleothem derived clumped isotope temperature record of continental Eurasia
A six-million-year speleothem derived clumped isotope temperature record of continental Eurasia Open
Our understanding of global temperature in the recent geological past is predominantly derived from oceanic proxies and modelling reconstructions1–3. Terrestrial proxy data, particularly in continental environments, is sparse and bas…
View article: Spatio-temporal dynamics of speleothem growth and glaciation in the British Isles
Spatio-temporal dynamics of speleothem growth and glaciation in the British Isles Open
Reconstructing the spatio-temporal dynamics of glaciations and permafrost largely relies on surface deposits and is therefore a challenge for every glacial period older than the last due to erosion. Consequently, glaciations and permafrost…
View article: Newly dated permafrost deposits and their paleo-ecological inventory reveal a much warmer-than-today Eemian in Arctic Siberia
Newly dated permafrost deposits and their paleo-ecological inventory reveal a much warmer-than-today Eemian in Arctic Siberia Open
Fossil proxy records in Last Interglacial (LIG, ca. 130–115 ka) lacustrine thermokarst deposits now preserved in permafrost can provide insights into terrestrial Arctic environments during a period when northern hemisphere climate conditio…
View article: A multi-proxy stalagmite record indicates a shift in forcing of twentieth century drought events in Normandy
A multi-proxy stalagmite record indicates a shift in forcing of twentieth century drought events in Normandy Open
Drought events are increasingly impacting Europe. The study of past droughts helps disentangle the different factors that trigger hydrological drought, helping to forecast future drought severity. Here we identify the historical drought ev…
View article: A multi-proxy stalagmite record indicates a shift in forcing of 20th Century drought events in Normandy
A multi-proxy stalagmite record indicates a shift in forcing of 20th Century drought events in Normandy Open
Drought events are increasingly impacting Europe. The study of past droughts helps disentangle the different factors that trigger hydrological drought, helping to forecast future drought severity. Here we identify the historical drought ev…
View article: Spatio-temporal dynamics of speleothem growth and glaciation in the British Isles
Spatio-temporal dynamics of speleothem growth and glaciation in the British Isles Open
Reconstructing the spatio-temporal dynamics of glaciations and permafrost largely relies on surface deposits, and is therefore a challenge for every glacial older than the last due to erosion. Consequently, glaciations and permafrost remai…
View article: Speleothem evidence for late Miocene extreme Arctic amplification – an analogue for near future anthropogenic climate change?
Speleothem evidence for late Miocene extreme Arctic amplification – an analogue for near future anthropogenic climate change? Open
The Miocene provides an excellent climatic analogue for near future anthropogenic warming, with atmospheric CO2 concentrations and global average temperatures similar to those projected for the coming century. However, the magnitude of Mio…
View article: Comment on egusphere-2024-1691
Comment on egusphere-2024-1691 Open
Abstract. The Miocene provides an excellent climatic analogue for near future anthropogenic warming, with atmospheric CO2 concentrations and global average temperatures similar to those projected for the coming century. However, the magnit…
View article: Reconstruction of Holocene and Last Interglacial vegetation dynamics and wildfire activity in southern Siberia
Reconstruction of Holocene and Last Interglacial vegetation dynamics and wildfire activity in southern Siberia Open
Wildfires are a rapidly increasing threat to boreal forests. While our understanding of the drivers behind wildfires and their environmental impact is growing, it is mostly limited to the observational period. Here we focus on the boreal f…
View article: Stalagmites with ‘drip cups’ – are they suitable for palaeotemperature reconstructions?
Stalagmites with ‘drip cups’ – are they suitable for palaeotemperature reconstructions? Open
Stalagmites (carbonate deposits in caves) are excellent archives of palaeoenvironmental changes, as they are not only amenable to high-precision radiometric dating but host numerous proxy variables that reflect past changes in climate cond…
View article: Reconstruction of Holocene wildfire occurrence using levoglucosan and lignin biomarkers from Siberian stalagmites
Reconstruction of Holocene wildfire occurrence using levoglucosan and lignin biomarkers from Siberian stalagmites Open
<p>Recent accelerating global temperature rise increases the likelihood and susceptibility of the Siberian taiga to more frequent and extreme wildfires [1] [2]. This leads to enhanced permafrost thaw and subsequent greenhouse gases e…
View article: A late Miocene seasonality and wildfire record from northern Siberia utilising novel speleothem proxies
A late Miocene seasonality and wildfire record from northern Siberia utilising novel speleothem proxies Open
<p>The Miocene provides one of the best analogues for near future anthropogenic warming &#8212; with atmospheric CO<sub>2</sub> concentrations similar, or slightly higher than present, warmer global temperatures (Stei…
View article: A tentative stalagmite-based multi-proxy reconstruction of environmental changes at the end of Marine Isotope Stage 11 in Uzbekistan, Central Asia&#160;
A tentative stalagmite-based multi-proxy reconstruction of environmental changes at the end of Marine Isotope Stage 11 in Uzbekistan, Central Asia  Open
<p>The archaeological record suggests that multiple groups of hominins occupied and dispersed across Central Asia periodically during the middle Pleistocene (Ranov et al., 1995; Derevianko et al. 2003; Vishnyatsky 1999). It is likely…