Sebastian G. Mutz

University of Tübingen

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Co-Authors

Todd A. Ehlers

University of Tübingen

Svetlana Botsyun

Freie Universität Berlin

Daniel Boateng

University of Tübingen

Andreas Mulch

Senckenberg Biodiversity and Climate Research Centre

Martin Werner

Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung

Katharina Methner

Senckenberg Biodiversity and Climate Research Centre

Jingmin Li

Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

Heiko Paeth

University of Würzburg

Christian Steger

German Meteorological Service

Christian Stepanek

Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung

Cooperative Institutions

NOAA Physical Sciences Laboratory

University of Tübingen

John Wiley & Sons (United States)

Johannes Gutenberg University Mainz

Nanjing University

TH Bingen University of Applied Sciences

Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences

Goethe University Frankfurt

Senckenberg Biodiversity and Climate Research Centre

China Meteorological Administration

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Middle Miocene climate and stable oxygen isotopes in Europe

Zenodo (CERN European Organization for Nuclear Research) (2022)

Svetlana Botsyun Todd A. Ehlers Alexander Koptev Madelaine Böhme Katharina Methner

v1. Three ECHAM5-wiso model experiments for European region. For the first experiment (Europe_PI.nc), boundary conditions are set as pre-industrial and are identical to those in Botsyun et al., 2020. We also conducted two experiments with Middle Miocene boundary conditions reflecting two pCO₂settings (278 ppm and 450 ppm; Europe_Mio_278.nc and Europe_Mio_450.nc experiments) within current estimates of the Middle Miocene pCO_2. v2. Global ECHAM5-wiso model experiments. geosp_simulations.nc contains surface geopotential for PI and Miocene experiments with modified Alpine topography and paleogeography.

Climate simulation

10.5281/zenodo.6308474

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Middle Miocene climate and stable oxygen isotopes in Europe

Zenodo (CERN European Organization for Nuclear Research) (2022)

Svetlana Botsyun Todd A. Ehlers Alexander Koptev Madelaine Böhme Katharina Methner

10.5281/zenodo.6938759

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Miocene high elevation in the Central Alps

Solid Earth (2021)

Emilija Krsnik Katharina Methner Marion Campani Svetlana Botsyun Sebastian G. Mutz

Abstract. Reconstructing Oligocene–Miocene paleoelevation contributes to our understanding of the evolutionary history of the European Alps and sheds light on geodynamic and Earth surface processes involved in the development of Alpine topography. Despite being one of the most intensively explored mountain ranges worldwide, constraints on the elevation history of the European Alps remain scarce. Here we present stable and clumped isotope measurements to provide a new paleoelevation estimate for the mid-Miocene (∼14.5 Ma) European Central Alps. We apply stable isotope δ–δ paleoaltimetry to near-sea-level pedogenic carbonate oxygen isotope (δ18O) records from the Northern Alpine Foreland Basin (Swiss Molasse Basin) and high-Alpine phyllosilicate hydrogen isotope (δD) records from the Simplon Fault Zone (Swiss Alps). We further explore Miocene paleoclimate and paleoenvironmental conditions in the Swiss Molasse Basin through carbonate stable (δ18O, δ13C) and clumped (Δ47) isotope data from three foreland basin sections in different alluvial megafan settings (proximal, mid-fan, and distal). Combined pedogenic carbonate δ18O values and Δ47 temperatures (30±5 ∘C) yield a near-sea-level precipitation δ18Ow value of -5.8±1.2 ‰ and, in conjunction with the high-Alpine phyllosilicate δD value of -14.6±0.3 ‰, suggest that the region surrounding the Simplon Fault Zone attained surface elevations of >4000 m no later than the mid-Miocene. Our near-sea-level δ18Ow estimate is supported by paleoclimate (iGCM ECHAM5-wiso) modeled δ18O values, which vary between −4.2 ‰ and −7.6 ‰ for the Northern Alpine Foreland Basin.

Molasse

δ18O

Paleoclimatology

Aridification

10.5194/se-12-2615-2021

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Citations (17)

Comparison of GPS and Quaternary slip rates: Insights from a new Quaternary fault database for Central Asia

EGU General Assembly Conference Abstracts (2016)

Solmaz Mohadjer Todd A. Ehlers Rebecca Bendick Sebastian G. Mutz

Source

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Correction to “ Water isotope module of the ECHAM atmospheric general circulation model: A study on timescales from days to several years” by G. Hoffmann et al.

Journal of Geophysical Research Atmospheres (1998)

Jingmin Li Todd A. Ehlers Sebastian G. Mutz Christian Steger Heiko Paeth

Circulation (fluid dynamics)

Atmospheric Circulation

10.1029/98jd02857

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Citations (3)

Late quaternary climate, precipitation δ18O, and Indian monsoon variations over the Tibetan Plateau

Earth and Planetary Science Letters (2016)

Jingmin Li Todd A. Ehlers Martin Werner Sebastian G. Mutz Christian Steger

Last Glacial Maximum

Proxy (statistics)

Paleoclimatology

East Asian Monsoon

10.1016/j.epsl.2016.09.031

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Citations (29)

Review of GPS and Quaternary fault slip rates in the Himalaya-Tibet orogen

Earth-Science Reviews (2017)

Solmaz Mohadjer Todd A. Ehlers Rebecca Bendick Sebastian G. Mutz

Thrust fault

10.1016/j.earscirev.2017.09.005

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Citations (31)

Supporting material for PyESDv1.0.1 An open-source Python framework for empirical-statistical downscaling of climate information

Zenodo (CERN European Organization for Nuclear Research) (2023)

Daniel Boateng Sebastian G. Mutz

The nature and severity of climate change impacts varies significantly from region to region. Consequently, high-resolution climate information is needed for meaningful impact assessments and the design of mitigation strategies. This demand has led to an increase in the coupling of Empirical Statistical Downscaling (ESD) models to General Circulation Model (GCM) simulations of future climate. Here, we present a new open-source Python package (pyESD; github.com/Dan-Boat/PyESD) that implements several Perfect Prognosis ESD (PP-ESD) methods and the whole downscaling cycle. The latter includes routines for data preparation, predictor selection and construction, model selection and training, evaluation, utility tools for relevant statistical tests, visualization, and more. The package includes a collection of well-established Machine Learning algorithms and allows the user to choose a variety of estimators, cross-validation schemes, objective function measures, hyperparameter optimization, etc., in relatively few lines of code. The package is highly modular and flexible and allows quick and reproducible downscaling of any climate information, such as precipitation, temperature, wind speed, or even glacial retreat. The dataset presented here serves as supporting material for the package description and evaluation manuscript

Python

10.5281/zenodo.7767680

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The effects of late Cenozoic climate change on the global distribution of frost cracking

Earth Surface Dynamics (2022)

Hemanti Sharma Sebastian G. Mutz Todd A. Ehlers

Abstract. Frost cracking is a dominant mechanical weathering phenomenon facilitating the breakdown of bedrock in periglacial regions. Despite recent advances in understanding frost cracking processes, few studies have addressed how global climate change over the late Cenozoic may have impacted spatial variations in frost cracking intensity. In this study, we estimate global changes in frost cracking intensity (FCI) by segregation ice growth. Existing process-based models of FCI are applied in combination with soil thickness data from the Harmonized World Soil Database. Temporal and spatial variations in FCI are predicted using surface temperature changes obtained from ECHAM5 general circulation model simulations conducted for four different paleoclimate time slices. Time slices considered include pre-industrial (∼ 1850 CE, PI), mid-Holocene (∼ 6 ka, MH), Last Glacial Maximum (∼ 21 ka, LGM), and Pliocene (∼ 3 Ma, PLIO) times. Results indicate for all paleoclimate time slices that frost cracking was most prevalent (relative to PI times) in the middle- to high-latitude regions, as well as high-elevation lower-latitude areas such the Himalayas, Tibet, the European Alps, the Japanese Alps, the US Rocky Mountains, and the Andes Mountains. The smallest deviations in frost cracking (relative to PI conditions) were observed in the MH simulation, which yielded slightly higher FCI values in most of the areas. In contrast, larger deviations were observed in the simulations of the colder climate (LGM) and warmer climate (PLIO). Our results indicate that the impact of climate change on frost cracking was most severe during the PI–LGM period due to higher differences in temperatures and glaciation at higher latitudes. The PLIO results indicate low FCI in the Andes and higher values of FCI in Greenland and Canada due to the diminished extent of glaciation in the warmer PLIO climate.

Paleoclimatology

Frost (temperature)

Present day

Frost weathering

Last Glacial Maximum

10.5194/esurf-10-997-2022

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Miocene high elevation and high relief in the Central Alps

Emilija Krsnik Katharina Methner Marion Campani Svetlana Botsyun Sebastian G. Mutz

Abstract. Reconstructing Oligocene-Miocene paleoelevation contributes to our understanding of the evolutionary history of the European Alps and sheds light on geodynamic and Earth’s surface processes involved in the development of Alpine topography. Despite being one of the most intensively explored mountain ranges worldwide, constraints on the elevation history of the European Alps, however, remain scarce. Here we present stable and clumped isotope geochemistry measurements to provide a new paleoelevation estimate for the mid-Miocene (~14.5 Ma) European Central Alps. We apply stable isotope δ-δ paleoaltimetry on near sea level pedogenic carbonate oxygen isotope (δ18O) records from the Northern Alpine Foreland Basin (Swiss Molasse Basin) and high-Alpine phyllosilicate hydrogen isotope (δD) records from the Simplon Fault Zone (Swiss Alps). We further explore Miocene paleoclimate and paleoenvironmental conditions in the Swiss Molasse Basin through carbonate stable (δ18O, δ13C) and clumped (Δ47) isotope data from three foreland basin sections in different alluvial megafan settings (proximal, mid-fan, and distal). Combined pedogenic carbonate δ18O values and Δ47 temperatures (30 ± 5 °C) yield a near sea level precipitation δ18Ow value of −5.8 ± 0.2 ‰ and in conjunction with the high-Alpine phyllosilicate δD record suggest that the region surrounding the SFZ attained surface elevations of > 4000 m no later than the mid-Miocene. Our near sea level δ18Ow estimate is supported by paleoclimate (iGCM Echam5-wiso) modeled δ18O values, which vary between −4.2 and −7.6 ‰ for the Northern Alpine Foreland Basin.

Molasse

δ18O

Paleoclimatology

Aridification

10.5194/se-2021-59

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