Thomas Münch
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View article: The colors of proxy noise
The colors of proxy noise Open
The complex biological and physical processes that preserve paleoclimate information over centuries or longer introduce variations in proxy time series that are unrelated to the true climate. These non-climatic variations act on different …
View article: The impact of measurement precision on the resolvable resolution of ice core water isotope reconstructions
The impact of measurement precision on the resolvable resolution of ice core water isotope reconstructions Open
Stable water isotopes in ice cores serve as a valuable proxy for the climate of the past hundreds of thousands of years. Over time, water isotope diffusion causes significant attenuation of the isotopic signal, exacerbated in deep ice due …
View article: Greenland Ice Core Isotope Variability Strongly Influenced by Systematic Changes in Depositional Noise
Greenland Ice Core Isotope Variability Strongly Influenced by Systematic Changes in Depositional Noise Open
Stable water isotopes from ice cores are a unique proxy for reconstructing polar climate variability. Their interpretation is, however, challenging due to the impact of depositional noise. Here, we analyze the centennial‐ to millennial‐sca…
View article: Greenland ice core isotope variability is controlled by systematic changes of depositional noise
Greenland ice core isotope variability is controlled by systematic changes of depositional noise Open
Ice core stable water isotopes are among the few proxies capable of capturing past climate variability at timescales up to decades throughout and beyond the last Glacial period. They are therefore used to assess climate variability across …
View article: The impact of measurement precision on the resolvable resolution of ice core water isotope reconstructions
The impact of measurement precision on the resolvable resolution of ice core water isotope reconstructions Open
Stable water isotopes in ice cores serve as a valuable proxy for the climate of the past hundreds of thousands of years. Over time, water isotope diffusion causes significant attenuation of the isotopic signal, exacerbated in deep ice due …
View article: The Colors of Proxy Noise
The Colors of Proxy Noise Open
Uncertainty in paleoclimate time series is inherent to the complex biological and physical processes involved in forming and archiving them in the environment for centuries or longer. The timescale-dependency of this uncertainty is often r…
View article: Stratigraphic noise and its potential drivers across the plateau of Dronning Maud Land, East Antarctica
Stratigraphic noise and its potential drivers across the plateau of Dronning Maud Land, East Antarctica Open
Stable water isotopologues of snow, firn and ice cores provide valuable information on past climate variations. Yet single profiles are generally not suitable for robust climate reconstructions. Stratigraphic noise, introduced by the irreg…
View article: Comment on egusphere-2022-1392
Comment on egusphere-2022-1392 Open
Abstract. Stable water isotopologues of snow, firn, and ice cores provide valuable information on past climate variations. Yet, stratigraphic noise, introduced by the irregular deposition, wind driven erosion and redistribution of snow, im…
View article: Optimal coring locations for high resolution climate reconstructions from the East Antarctic Plateau
Optimal coring locations for high resolution climate reconstructions from the East Antarctic Plateau Open
Oxygen isotopes of snow, firn, and ice cores provide valuable information on past climate variations. Yet, multiple processes, such as stratigraphic noise and the advection of spatial isotope variations linked to topographic anomalies…
View article: Modern temperatures in central–north Greenland warmest in past millennium
Modern temperatures in central–north Greenland warmest in past millennium Open
The Greenland Ice Sheet has a central role in the global climate system owing to its size, radiative effects and freshwater storage, and as a potential tipping point 1 . Weather stations show that the coastal regions are warming 2 , but th…
View article: Stratigraphic noise and its potential drivers across the plateau of Dronning Maud Land, East Antarctica
Stratigraphic noise and its potential drivers across the plateau of Dronning Maud Land, East Antarctica Open
Stable water isotopologues of snow, firn, and ice cores provide valuable information on past climate variations. Yet, stratigraphic noise, introduced by the irregular deposition, wind driven erosion and redistribution of snow, impacts the …
View article: Local-scale deposition of surface snow on the Greenland ice sheet
Local-scale deposition of surface snow on the Greenland ice sheet Open
Ice cores from polar ice sheets and glaciers are an important climate archive. Snow layers, consecutively deposited and buried, contain climatic information from the time of their formation. However, particularly low-accumulation areas are…
View article: How precipitation intermittency sets an optimal sampling distance for temperature reconstructions from Antarctic ice cores
How precipitation intermittency sets an optimal sampling distance for temperature reconstructions from Antarctic ice cores Open
Many palaeoclimate proxies share one challenging property: they are not only driven by the climatic variable of interest, e.g. temperature, but they are also influenced by secondary effects which cause, among other things, increased variab…
View article: optimalcores: An R software project to analyse optimal ice core locations in a climate model simulation
optimalcores: An R software project to analyse optimal ice core locations in a climate model simulation Open
optimalcores is an R software project to analyse the temperature and isotope time series in an isotope-enabled climate model simulation; specifically, the ECHAM5/MPI-OM-wiso past1000 climate model run can be analysed, but also any other su…
View article: Stratigraphic noise in isotope records on the East Antarctic Plateau; new insights from an array of firn profiles
Stratigraphic noise in isotope records on the East Antarctic Plateau; new insights from an array of firn profiles Open
<p>Stable oxygen isotopes from firn and ice cores provide valuable information on past climate variations, however, single profiles showed not to be representative for robust climate reconstructions. Stratigraphic noise, i.e. the irr…
View article: Natural variability and recent warming in central Greenland ice cores
Natural variability and recent warming in central Greenland ice cores Open
<p>Climate variability of the Arctic region has been investigated by means of temperature reconstructions based on proxies from various climate archives around the Arctic, compiled over the last 2000a in the so called Arctic2k record…
View article: On the relationship between stable isotopes and major impurity species as inferred from a two-dimensional firn sampling approach at EDML, East Antarctica
On the relationship between stable isotopes and major impurity species as inferred from a two-dimensional firn sampling approach at EDML, East Antarctica Open
<p>Ice cores constitute a major palaeoclimate archive by recording, among many others, the atmospheric variations of stable oxygen and hydrogen isotopic composition of water and of soluble ionic impurities. While impurities are used …
View article: Estimating the diffusion length in the deepest section of ice cores; A case study for MIS19 in Dome-C
Estimating the diffusion length in the deepest section of ice cores; A case study for MIS19 in Dome-C Open
<p>To recover very old climate information from ice core records, one needs to interpret the deepest part of an ice core. As the oldest record, the Dome-C ice core can serve as an analogue for the Beyond EPICA Oldest Ice Core that is…
View article: Local scale depositional processes of surface snow on the Greenlandice sheet
Local scale depositional processes of surface snow on the Greenlandice sheet Open
Ice cores from polar ice sheets and glaciers are an important climate archive. Snow layers, consecutively deposited and buried, contain climatic information of the time of their formation. However, particularly low-accumulation areas are c…
View article: Typo correction
Typo correction Open
The difference in correlation coefficient between using unweighted and precipitationweighted 2 m temperature time series for the correlation with the local oxygen isotope composition (i.e.
View article: Depth-age model of the B18_2012 firn core
Depth-age model of the B18_2012 firn core Open
Using raw, un-calibrated dielectrical profiling (DEP) data from the field (NEEM Set-up), volcanic tie points were derived. Together with the smoothed density data and the isotopic composition the record was dated by layer counting.
View article: Day-to-day changes in the snow surface height derived from digital elevation models at the EGRIP camp site in 2018
Day-to-day changes in the snow surface height derived from digital elevation models at the EGRIP camp site in 2018 Open
Day-to-day changes derived from digital elevation models which are generated using a photogrammetry Structure-from-Motion approach covering an area of 39 x 5m (195m^2) next to the deep drilling site of the East Greenland Ice Core Project (…
View article: How precipitation intermittency sets an optimal sampling distancefor temperature reconstructions from Antarctic ice cores
How precipitation intermittency sets an optimal sampling distancefor temperature reconstructions from Antarctic ice cores Open
Many palaeoclimate proxies share one challenging property: they are not only driven by the climatic variable of interest, e.g., temperature, but they are also influenced by secondary effects which cause, among other things, increased varia…
View article: Antarctic time series of temperature, precipitation, and stable isotopes in precipitation from the ECHAM5/MPI-OM-wiso past1000 climate model simulation
Antarctic time series of temperature, precipitation, and stable isotopes in precipitation from the ECHAM5/MPI-OM-wiso past1000 climate model simulation Open
This data set contains time series of two-metre air temperature (tas), surface temperature (ts), total precipitation (pr), oxygen-18 isotopic composition in precipitation (oxy), and deuterium isotopic composition in precipitation (dtr) fro…
View article: Antarctic time series of temperature, precipitation, and stable isotopes in precipitation from the ECHAM5/MPI-OM-wiso past1000 climate model simulation
Antarctic time series of temperature, precipitation, and stable isotopes in precipitation from the ECHAM5/MPI-OM-wiso past1000 climate model simulation Open
This data set contains time series of two-metre air temperature (tas), surface temperature (ts), total precipitation (pr), oxygen-18 isotopic composition in precipitation (oxy), and deuterium isotopic composition in precipitation (dtr) fro…
View article: Climatic information archived in ice cores: impact of intermittency and diffusion on the recorded isotopic signal in Antarctica
Climatic information archived in ice cores: impact of intermittency and diffusion on the recorded isotopic signal in Antarctica Open
The isotopic signal (δ18O and δD) imprinted in ice cores from Antarctica is not solely generated by the temperature sensitivity of the isotopic composition of precipitation, but it also contains the signature of the intermittency of the pr…