Thomas Mölg
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View article: From Sea to Summit: Investigating the Explicit Role of SST Increase for Regional and High‐Altitude Climates in New Zealand
From Sea to Summit: Investigating the Explicit Role of SST Increase for Regional and High‐Altitude Climates in New Zealand Open
The oceans around New Zealand are regional warming hotspots where sea surface temperature (SST) is rising much faster than the global average. This study uses a sensitivity experiment with a regional atmospheric model to investigate how oc…
View article: The system of atmosphere, land, ice and ocean in the region near the 79N Glacier in northeast Greenland: synthesis and key findings from the Greenland Ice Sheet–Ocean Interaction (GROCE) experiment
The system of atmosphere, land, ice and ocean in the region near the 79N Glacier in northeast Greenland: synthesis and key findings from the Greenland Ice Sheet–Ocean Interaction (GROCE) experiment Open
The Greenland Ice Sheet has steadily lost mass over the past decades, presently representing the second-largest single contributor to global sea-level rise. In line with the rest of the Greenland Ice Sheet, the glaciers draining the northe…
View article: SNOWstorm – A new emulator model for near-surface winds and drifting snow in glaciological applications
SNOWstorm – A new emulator model for near-surface winds and drifting snow in glaciological applications Open
Local snow accumulation in alpine terrain is highly influenced by wind-driven redistribution of snow. Accurate knowledge of the small-scale flow field and the interactions between the snow and the atmosphere are therefore necessary to bett…
View article: Brief communication: Tropical glaciers on Puncak Jaya (Irian Jaya/West Papua, Indonesia) close to extinction
Brief communication: Tropical glaciers on Puncak Jaya (Irian Jaya/West Papua, Indonesia) close to extinction Open
Glaciers have been retreating for many decades on a global scale due to anthropogenic climate change, including the mostly small glaciers in the Tropics. In this brief report, we document area changes of the Puncak Jaya glaciers in South-E…
View article: European summer weather regimes 1990-2019: Automatic classification and representation in a small global climate model ensemble
European summer weather regimes 1990-2019: Automatic classification and representation in a small global climate model ensemble Open
In Central Europe, the occurrence of different weather regimes (WRs) plays a major role in spatiotemporal temperature and precipitation patterns. In the context of increasingly extreme summers, this study focuses on European summer WRs (Ju…
View article: The weather today rocks or sucks for my tree: exploring the understanding of climate impacts on forests at high school level through tweets
The weather today rocks or sucks for my tree: exploring the understanding of climate impacts on forests at high school level through tweets Open
With the progression of global warming, impacts on the human sphere will undoubtedly increase. One prominent example at mid-latitudes is the stress on forests caused by climate change, which the BayTreeNet project (https://baytreenet.de/, …
View article: Stable Water Isotope Signals and Their Relation to Stratiform and Convective Precipitation in the Tropical Andes
Stable Water Isotope Signals and Their Relation to Stratiform and Convective Precipitation in the Tropical Andes Open
Stratiform and convective precipitation are known to be associated with distinct isotopic fingerprints in the tropics. Such rain type specific isotope signals are of key importance for climate reconstructions derived from climate proxies (…
View article: A new, high‐resolution atmospheric dataset for southern New Zealand, 2005–2020
A new, high‐resolution atmospheric dataset for southern New Zealand, 2005–2020 Open
The regional climate of New Zealand's South Island is shaped by the interaction of the Southern Hemisphere westerlies with the complex orography of the Southern Alps. Due to its isolated geographical setting in the south‐west Pacific, the …
View article: Comment on egusphere-2024-757
Comment on egusphere-2024-757 Open
Abstract. The Greenland Ice Sheet has steadily lost mass over the past decades, presently representing the second-largest single contributor to global sea-level rise. Even the glaciers draining the Northeast Greenland ice stream have been …
View article: A Drifting and Blowing Snow Scheme in the Weather Research and Forecasting Model
A Drifting and Blowing Snow Scheme in the Weather Research and Forecasting Model Open
Wind‐driven redistribution of surface snow is one of the key factors leading to heterogeneous accumulation of snow at small scales. Understanding the processes that lead to this heterogeneous accumulation is, therefore, of great importance…
View article: The atmosphere-land/ice-ocean system in the region near the 79N Glacier in Northeast Greenland: Synthesis and key findings from GROCE
The atmosphere-land/ice-ocean system in the region near the 79N Glacier in Northeast Greenland: Synthesis and key findings from GROCE Open
The Greenland Ice Sheet has steadily lost mass over the past decades, presently representing the second-largest single contributor to global sea-level rise. Even the glaciers draining the Northeast Greenland ice stream have been observed t…
View article: Reply on both reviewer comments (RC1+RC2)
Reply on both reviewer comments (RC1+RC2) Open
Abstract. With the progression of global warming, impacts on the human sphere will undoubtedly increase. One prominent impact example at mid latitudes is the stress of forests under climate change, which the project "BayTreeNet" (https://b…
View article: Welcome to Fourier-Land: Deep-Learning based downscaling of near-surface winds and drifting snow using WRF simulations over synthetic topographies
Welcome to Fourier-Land: Deep-Learning based downscaling of near-surface winds and drifting snow using WRF simulations over synthetic topographies Open
Redistribution of snow by the wind has been shown to greatly influence local snow accumulation in alpine terrain. Due to the small-scale nature of this process, previous studies either concentrated on short case studies over small areas or…
View article: A novel framework to investigate wind-driven snow redistribution over an Alpine glacier: combination of high-resolution terrestrial laser scans and large-eddy simulations
A novel framework to investigate wind-driven snow redistribution over an Alpine glacier: combination of high-resolution terrestrial laser scans and large-eddy simulations Open
Wind-driven snow redistribution affects the glacier mass balance by eroding or depositing mass from or to different parts of the glacier’s surface. High-resolution observations are used to test the ability of large-eddy simulations as a to…
View article: Tropical glacier loss in East Africa: recent areal extents on Kilimanjaro, Mount Kenya, and in the Rwenzori Range from high-resolution remote sensing data
Tropical glacier loss in East Africa: recent areal extents on Kilimanjaro, Mount Kenya, and in the Rwenzori Range from high-resolution remote sensing data Open
Over recent decades, the retreat of Kilimanjaro’s glaciers has been portrayed as a beacon of climate change. The decline of glaciers over the 20 th century, however, is evident for all tropical glaciers in East Africa, including those foun…
View article: Stable water isotope signals and their relation to stratiform and convective precipitation in the tropical Andes
Stable water isotope signals and their relation to stratiform and convective precipitation in the tropical Andes Open
Stratiform and convective precipitation are known to be associated with distinct isotopic fingerprints in the tropics. Such rain type specific isotope signals are of key importance for climate proxies based on stable isotopes like for exam…
View article: The weather today rocks or sucks for my tree: Exploring the understanding of climate impacts on forests at high school level through tweets
The weather today rocks or sucks for my tree: Exploring the understanding of climate impacts on forests at high school level through tweets Open
With the progression of global warming, impacts on the human sphere will undoubtedly increase. One prominent impact example at mid latitudes is the stress of forests under climate change, which the project "BayTreeNet" (https://baytreenet.…
View article: Surface mass balance and energy balance of the 79N Glacier (Nioghalvfjerdsfjorden, NE Greenland) modeled by linking COSIPY and Polar WRF – CORRIGENDUM
Surface mass balance and energy balance of the 79N Glacier (Nioghalvfjerdsfjorden, NE Greenland) modeled by linking COSIPY and Polar WRF – CORRIGENDUM Open
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View article: Snowdrift scheme in the Weather Research and Forecasting model
Snowdrift scheme in the Weather Research and Forecasting model Open
Wind-driven redistribution of snow is one of the key factors leading to heterogeneous accumulation of snow at small scales. Understanding these processes is, therefore, of great importance to many glaciological and hydrological questions. …
View article: Investigating wind-driven Snow Redistribution Processes over an Alpine Glacier with high-resolution Terrestrial Laser Scans and Large-eddy Simulations
Investigating wind-driven Snow Redistribution Processes over an Alpine Glacier with high-resolution Terrestrial Laser Scans and Large-eddy Simulations Open
Wind-driven snow redistribution affects the glacier mass balance by eroding or depositing mass from or to different parts of the glacier’s surface. High-resolution observations are used to test the ability of large eddy simulations as a to…
View article: A new, high-resolution climatological atmospheric dataset for southern New Zealand
A new, high-resolution climatological atmospheric dataset for southern New Zealand Open
The regional climate of New Zealand’s South Island is shaped by the interaction of the Southern Hemisphere westerlies with the complex orography of the Southern Alps. Due to the geographical setting of New Zealand in the south-west P…
View article: Simulating snow drift in WRF – First results and future plans of a novel module
Simulating snow drift in WRF – First results and future plans of a novel module Open
We present a new framework to simulate snow drift in the Weather Research and Forecasting (WRF) model. Here, we show the basic structure of the module, first results of several test applications as well as our future plans with the model.I…
View article: Seasonal and inter annual effects of meltwater runoff on ice dynamics in Northeast Greenland
Seasonal and inter annual effects of meltwater runoff on ice dynamics in Northeast Greenland Open
The large amount of meltwater reaching the base of a glacier at the beginning of the melt season accelerates its ice flow, as meltwater pressurised in cavities acts as bed lubricant. Proceeding in the melt season, if the erosive power of b…
View article: Comparative study of the surface energy and mass balance of Kersten Glacier on Mt. Kilimanjaro: COSIPY versus previous modeling
Comparative study of the surface energy and mass balance of Kersten Glacier on Mt. Kilimanjaro: COSIPY versus previous modeling Open
Kersten Glacier, a slope glacier on the southern flank of Kilimanjaro, has been observed to shrink for many decades. Quantitatively, the glacier’s mass balance has been studied by Mölg et al. (2009) with a distributed physically…
View article: GCM-based future projections of European weather types obtained by Self‑Organizing-Maps and a novel GCM selection technique
GCM-based future projections of European weather types obtained by Self‑Organizing-Maps and a novel GCM selection technique Open
The interdisciplinary research project "BayTreeNet" examines the reactions of forest ecosystems to climate dynamics. To establish a relationship between tree growth and climate, it is important to know that in the mid-latitudes, local clim…
View article: Modeling cloud properties over the <scp>79 N</scp> Glacier (Nioghalvfjerdsfjorden, <scp>NE</scp> Greenland) for an intense summer melt period in 2019
Modeling cloud properties over the <span>79 N</span> Glacier (Nioghalvfjerdsfjorden, <span>NE</span> Greenland) for an intense summer melt period in 2019 Open
Long believed to be insignificant, melt activity on the Northeast Greenland Ice Stream (NEGIS) has increased in recent years. Summertime Arctic clouds have the potential to strongly affect surface melt processes by regulating the amount of…
View article: Cloud forcing of surface energy balance from in situ measurements in diverse mountain glacier environments
Cloud forcing of surface energy balance from in situ measurements in diverse mountain glacier environments Open
Clouds are an important component of the climate system, yet our understanding of how they directly and indirectly affect glacier melt in different climates is incomplete. Here we analyse high-quality datasets from 16 mountain glaciers in …
View article: A mid-troposphere perspective on the East African climate paradox
A mid-troposphere perspective on the East African climate paradox Open
The East African climate paradox—a term framing the observed precipitation decline in the March–May (MAM) wet season of East Africa from roughly 1980–2010, yet an increase in future climates simulated by global climate models (GCMs)—mostly…