Explanipedia

Computing the Full Earth System at 1km Resolution Open

Daniel Klocke, Claudia Frauen, Jan Frederik Engels, Dmitry Alexeev, René Redler , et al. · 2025

Computing the Full Earth System at 1 km Resolution Open

Claudia Frauen, Jan Frederik Engels, Dmitry Alexeev, René Redler, Reiner Schnur , et al. · 2025

We present the first-ever global simulation of the full Earth system at 1.25 km grid spacing, achieving highest time compression with an unseen number of degrees of freedom. Our model captures the flow of energy, water, and carbon through …

Dynamics and roles in art and climate science collaborations: experiences from the University of Hamburg Open

Anna Pagnone, Jörn Behrens, David Nielsen, Linda Jetter, Lluc Vayreda Calbó , et al. · 2025

Art and science collaborations enable new means for science communication, knowledge production, and activism. Previous work has often focused on the outcome of such endeavors and on an external description of these collaborations, and les…

Author Correction: A transdisciplinary, comparative analysis reveals key risks from Arctic permafrost thaw Open

Susanna Gartler, Johanna Scheer, Alexandra Meyer, Khaled Abass, Annett Bartsch , et al. · 2025

Resolved tropical cyclones trigger CO2 uptake and phytoplankton bloom in an Earth system model simulation Open

David Nielsen, Fatemeh Chegini, Nuno Serra, Arjun Kumar, Nils Brüggemann , et al. · 2025

The ocean carbon cycle is directly impacted by storms in the atmosphere. Tropical cyclones (TCs), particularly, are known to drive intense air-sea CO2 fluxes and to trigger phytoplankton blooms. However, the latest generation of Earth syst…

A transdisciplinary, comparative analysis reveals key risks from Arctic permafrost thaw Open

Susanna Gartler, Johanna Scheer, Alexandra Meyer, Khaled Abass, Annett Bartsch , et al. · 2025

Developments in Permafrost Science and Engineering in Response to Climate Warming in Circumpolar and High Mountain Regions, 2019–2024 Open

C. R. Burn, Annett Bartsch, Elora Chakraborty, Soumik Das, Regula Frauenfelder , et al. · 2024

Research in geocryology is currently principally concerned with the effects of climate change on permafrost terrain. The motivations for most of the research are (1) quantification of the anticipated net emissions of CO 2 and CH 4 from war…

Permafrost thaw subsidence, sea-level rise, and erosion are transforming Alaska’s Arctic coastal zone Open

Roger Creel, Julia Guimond, Benjamin Jones, David Nielsen, Emily Bristol , et al. · 2024

Arctic shorelines are vulnerable to climate change impacts as sea level rises, permafrost thaws, storms intensify, and sea ice thins. Seventy-five years of aerial and satellite observations have established coastal erosion as an increasing…

Addendum: Reduced Arctic Ocean CO2 uptake due to coastal permafrost erosion Open

David Nielsen, Fatemeh Chegini, Joeran Maerz, Sebastian Brune, Moritz Mathis , et al. · 2024

The yearly increase in atmospheric CO 2 due to Arctic coastal erosion (up to 7-13 TgC per year in ) is between three and four orders of magnitude smaller than anthropogenic CO 2 emissions, currently estimated at about 10 PgC per year 1 (1 …

Reduced Arctic Ocean CO2 uptake due to coastal permafrost erosion Open

David Nielsen, Fatemeh Chegini, Joeran Maerz, Sebastian Brune, Moritz Mathis , et al. · 2024

Arctic coastal permafrost erosion is projected to increase by a factor of 2–3 by 2100. However, organic matter fluxes from the coastal permafrost into the ocean have not been considered in Earth system models so far. Here we represent coas…

Permafrost thaw subsidence, sea-level rise, and erosion are transforming Alaska’s Arctic coastal zone Open

Roger Creel, Julia Guimond, Benjamin Jones, David Nielsen, Emily Bristol , et al. · 2024

Climate warming is causing rapid coastal change in the Arctic. Permafrost thaw subsidence, sea-level rise, and erosion each threaten the Arctic nearshore. These agents of change have received unequal attention and their compound impact rem…

Enhanced CO2 uptake of the coastal ocean is dominated by biological carbon fixation Open

Moritz Mathis, Fabrice Lacroix, Stefan Hagemann, David Nielsen, Tatiana Ilyina , et al. · 2024

Observational reconstructions indicate a contemporary increase in coastal ocean CO 2 uptake. However, the mechanisms and their relative importance in driving this globally intensifying absorption remain unclear. Here we integrate coastal c…

Analysis of correlations between the South Atlantic Convergence Zone and Climate Indices Derived from the Pacific and Atlantic Oceans for Evaluating Teleconnections Open

Louise da Fonseca Aguiar, Vitor Luiz Victalino Galves, Márcio Cataldi, David Nielsen, Lívia Sancho , et al. · 2024

The South Atlantic Convergence Zone (SACZ) is one of the most important phenomena that influences the precipitation patterns in Brazil’s Southeast and Midwest regions during the spring and summer. These regions play a major role for …

Arctic marine heatwaves forced by greenhouse gases and triggered by abrupt sea-ice melt Open

Armineh Barkhordarian, David Nielsen, Dirk Olonscheck, Johanna Baehr · 2024

Since 2007, unprecedented marine heatwave events are occurring over the Arctic Ocean. Here we identify the fraction of the likelihood of Arctic marine heatwaves magnitude that is attributable to greenhouse gas forcing. Results reveal that …

Reduced Arctic Ocean CO2 uptake due to coastal permafrost erosion Open

David Nielsen, Fatemeh Chegini, Joeran Maerz, Sebastian Brune, Mikhail Dobrynin , et al. · 2023

Arctic coastal permafrost erosion is projected to increase by a factor of 2-3 by 2100. However, organic matter (OM) fluxes from the coastal permafrost into the ocean have not been considered in Earth system models (ESMs) so far. Here, we r…

Walter Hill: The Scotsman Who Grew Queensland Open

David Nielsen, Anoma Kumarasuriyar · 2023

For 26 years, Walter Hill was the longest serving and industrious Director of Brisbane's Botanic Garden.During this period, he created a world-class botanic garden and public park in an area that subsequently became known as Gardens Point.…

Recent marine heatwaves in the North Pacific warming pool can be attributed to rising atmospheric levels of greenhouse gases Open

Armineh Barkhordarian, David Nielsen, Johanna Baehr · 2022

Over the last decade, the northeast Pacific experienced marine heatwaves that caused devastating marine ecological impacts with socioeconomic implications. Here we use two different attribution methods and show that forcing by elevated gre…

Greenhouse gas forcing a necessary, but not sufficient, causation for the northeast Pacific marine heatwaves  Open

Armineh Barkhordarian, David Nielsen, Johanna Baehr · 2022

<p>Over the last decade, the northeast Pacific experienced strong marine heatwaves (MHWs) that produced devastating marine ecological impacts and received major societal concerns. Here, we assess the link between the well-mixed green…

Increase in Arctic coastal erosion and its sensitivity to warming in the twenty-first century Open

David Nielsen, Patrick Pieper, Armineh Barkhordarian, Pier Paul Overduin, Tatiana Ilyina , et al. · 2022

Arctic coastal erosion damages infrastructure, threatens coastal communities and releases organic carbon from permafrost. However, the magnitude, timing and sensitivity of coastal erosion increase to global warming remain unknown. Here we …

Greenhouse Gas Forcing a Necessary Causation for Marine Heatwaves Over the Northeast Pacific Warming Pool Open

Armineh Barkhordarian, David Nielsen, Johanna Baehr · 2022

Over the last decade, the northeast Pacific (NP) experienced strong marine heatwaves (MHWs) that produced devastating marine ecological impacts and received major societal concerns. Here, we assess the link between the well-mixed greenhous…

Oceanic Rossby waves drive inter-annual predictability of net primary production in the central tropical Pacific Open

Sebastian Brune, M. Espejo, David Nielsen, Hongmei Li, Tatiana Ilyina , et al. · 2021

In the Pacific Ocean, off-equatorial Rossby waves (RWs), initiated by atmosphere-ocean interaction, modulate the inter-annual variability of the thermocline. In this study, we explore the resulting potential gain in predictability of centr…

Projected increase of Arctic coastal erosion and its sensitivity to warming in the 21st Century Open

David Nielsen, Patrick Pieper, Armineh Barkhordarian, Pier Paul Overduin, Tatiana Ilyina , et al. · 2021

Arctic coastal erosion damages infrastructure, threatens coastal communities, and releases organic carbon from permafrost. However, the magnitude, timing and sensitivity of coastal erosion increase to global warming remain unknown. Here, w…

A large ensemble decadal prediction system with MPI-ESM Open

Sebastian Brune, Vimal Koul, David Nielsen, Laura Hövel, Holger Pohlmann , et al. · 2021

<p>Current state-of-the-art decadal ensemble prediction systems are run with an ensemble size of 10 to 40 members, their retrospective forecasts of the past are used to assess the system's prediction skill. Here, we present an attemp…

Sensitivity of organic carbon fluxes from Arctic coastal erosion to climate change Open

David Nielsen, Patrick Pieper, Victor Brovkin, Pier Paul Overduin, Tatiana Ilyina , et al. · 2021

<p>When unprotected by sea-ice and exposed to the warm air and ocean waves, the Arctic coast erodes and releases organic carbon from permafrost to the surrounding ocean and atmosphere. This release is estimated to deliver similar amo…

Representing Arctic coastal erosion in the Max Planck Institute Earth System Model (MPI-ESM) Open

David Nielsen, Johanna Baehr, Victor Brovkin, Mikhail Dobrynin · 2020

<p>The Arctic has warmed twice as fast as the globe and sea-ice extent has decreased, causing permafrost to thaw and the duration of the open-water period to extend. This combined effect increases the vulnerability of the Arctic coas…

Coastal Erosion Variability at the Southern Laptev Sea Linked to Winter Sea Ice and the Arctic Oscillation Open

David Nielsen, Mikhail Dobrynin, Johanna Baehr, Sergey O. Razumov, Mikhail N. Grigoriev · 2020

Arctic coastal erosion experiences pronounced effects from ongoing climate change. The Laptev Sea figures among the Arctic regions with the most severe erosion rates. Here, we use unprecedentedly long records of almost 30 years of annual i…

Tangible outcomes of intangible socio-cultural changes: The case study of Kandovan Open

Aso Hajirasouli, Anoma Kumarasuriyar, David Nielsen · 2019

The architecture and the built environment of any particular community is recognised as the component and physical expression of its socio-cultural factors. Likewise, dwellings and human settlements, are considered to be the most direct re…

Dynamics-based regression models for the South Atlantic Convergence Zone Open

David Nielsen, André Belém, Edilson Marton, Márcio Cataldi · 2018

The South Atlantic Convergence Zone (SACZ) plays a key role in the South American monsoon system (SAMS) precipitation regime, and accounts for around 25% of the rainfall volume over Southeast Brazil between October and April, on average, w…

Vernacular buildings' traditions Open

Aso Hajirasouli, Anoma Kumarasuriyar, David Nielsen · 2018

Vernacular architecture was relatively ignored until the beginning of the 20th century when Bernard officially coined the term in 1964. Since then a number of scholars have studied this concept in relation to society, culture, traditions, …

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