Peter Thejll
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View article: Wine must yields as indicators of May to July climate in Europe, 1416–1988
Wine must yields as indicators of May to July climate in Europe, 1416–1988 Open
Narrative historical records of wine production in Central Europe date back to 1200. The extent to which such data can be used as proxy data for summer temperatures is being explored. Here, we investigated taxes paid to the authorities in …
View article: Máni an exploration mission for the Moon
Máni an exploration mission for the Moon Open
IntroductionEfforts to quantify lunar surface properties, rover traversability, potential for in-situ resource utilization, or geological processes, all benefit from better optical resolution. The obvious preference for higher resolution i…
View article: Global Warming Levels as a basis for merging different generations of CMIP and CORDEX ensembles
Global Warming Levels as a basis for merging different generations of CMIP and CORDEX ensembles Open
The development of new generations of climate projections for use in the IPCC assessments is a core part of climate science. But while new datasets are always welcome, they also present challenges for the operationalisation of climate serv…
View article: Mélange or landfast ice: What controls seasonal calving at Greenland outlet glaciers?
Mélange or landfast ice: What controls seasonal calving at Greenland outlet glaciers? Open
Landfast sea ice and glacier mélange are part of a continuum of ice forms in front of marine-terminating outlet glaciers in Greenland. Mélange (sikussaq) has been posited to offer a buttressing effect on marine margins equivalent to floati…
View article: Unprecedented Extreme Meteorological Droughts Simulated in Fenno-Scandinavia with High-Resolution Climate Models
Unprecedented Extreme Meteorological Droughts Simulated in Fenno-Scandinavia with High-Resolution Climate Models Open
Convection-permitting regional climate models (CPRCMs) increasingly model local climate at scales smaller than 4 km. CPRCMs provide improved simulations of precipitation by resolving convection explicitly instead of relying on parameterisa…
View article: High-Resolution Climate Models Reveal Increasing Meteorological Drought Intensity in Fenno-Scandinavia
High-Resolution Climate Models Reveal Increasing Meteorological Drought Intensity in Fenno-Scandinavia Open
Climate projections indicate that Fenno-Scandinavia will experience increased precipitation in the future. However, the region might paradoxically face both intensified floods and more severe seasonal droughts. Little research has explored…
View article: Strong volcanic-induced climatic shocks on historical Moselle wine production
Strong volcanic-induced climatic shocks on historical Moselle wine production Open
In central and southern Europe, grapevine is a climate-sensitive agricultural product of great economic importance, both in historical times and today. We systematically investigated the climatic impact, focusing on volcanic-forced abrupt …
View article: Comment on cp-2024-41
Comment on cp-2024-41 Open
Abstract. In central and southern Europe, grapevine is a climate-sensitive agricultural product of large economic importance, both in historical times and today. We systematically investigated the climatic impact, focusing on volcanic-forc…
View article: Strong volcanic-induced climatic shocks on historical Moselle wine production
Strong volcanic-induced climatic shocks on historical Moselle wine production Open
In central and southern Europe, grapevine is a climate-sensitive agricultural product of large economic importance, both in historical times and today. We systematically investigated the climatic impact, focusing on volcanic-forced abrupt …
View article: Regional variation of climatological cloudburst frequency estimated from historical observations of daily precipitation sums
Regional variation of climatological cloudburst frequency estimated from historical observations of daily precipitation sums Open
Cloudburst are geographically localized extreme rainfall events where a large amount of rain falls within a few hours. The combination of small spatial scale, short duration and scarceness makes it difficult to reveal any systematic region…
View article: Lunar Imaging Earthshine Telescope, juLIET, for Earth Albedo Measurements 
Lunar Imaging Earthshine Telescope, juLIET, for Earth Albedo Measurements  Open
The average global temperature of Earth is governed by the energy balance equation, comparing energy entering and leaving the Earth system. A key parameter in this balance is the Earth’s albedo, determining the ratio of the Sun’…
View article: Climatic signatures in early modern European grain harvest yields
Climatic signatures in early modern European grain harvest yields Open
The association between climate variability and grain harvest yields has been an important component of food security and economy in European history. Yet, inter-regional comparisons of climate–yield relationships have been hampered by loc…
View article: Regional variation of climatological cloudburst frequency estimated from historical observations of daily precipitation sums
Regional variation of climatological cloudburst frequency estimated from historical observations of daily precipitation sums Open
This study aims to estimate climatological cloudburst frequencies from daily precipitation sums for a dense network of 161 historical Danish stations covering the period 1914–2010, in order to reveal any systematic regional differences. We…
View article: Comment on cp-2022-88
Comment on cp-2022-88 Open
Abstract. The association between climate variability and grain harvest yields has been an important component of food security and economy in European history. Yet, inter-regional comparisons of climate–yield relationships have been hampe…
View article: Strong volcanic and climatic shocks on early modern wine production
Strong volcanic and climatic shocks on early modern wine production Open
Wine is a particularly climate-sensitive crop for which long documentary series are available in much of Europe. Most studies of climate–wine growth relationships have hitherto utilised grape harvest date series. We instead investiga…
View article: Comment on cp-2022-88
Comment on cp-2022-88 Open
Abstract. The association between climate variability and grain harvest yields has been an important component of food security and economy in European history. Yet, inter-regional comparisons of climate–yield relationships have been hampe…
View article: Comment on cp-2022-88
Comment on cp-2022-88 Open
Abstract. The association between climate variability and grain harvest yields has been an important component of food security and economy in European history. Yet, inter-regional comparisons of climate–yield relationships have been hampe…
View article: Climatic signatures in early modern European grain harvest yields
Climatic signatures in early modern European grain harvest yields Open
The association between climate variability and grain harvest yields has been an important component of food security and economy in European history. Yet, inter-regional comparisons of climate–yield relationships have been hampered by loc…
View article: Lessons in climate service development from Klimaatlas, the Danish National Climate Atlas
Lessons in climate service development from Klimaatlas, the Danish National Climate Atlas Open
<p>Responding to the challenges of a changing climate requires information that is relevant and actionable at the local scale where adaptation actions take place. Here we describe the development of <em>Klimaatlas</em>, t…
View article: Climatic impacts on early modern European grain harvest yields
Climatic impacts on early modern European grain harvest yields Open
<p>We assess, within a framework of consistent statistical analysis, the inter-annual temperature and hydroclimate signal on grain harvest yields across diverse environmental settings of Europe during the early modern period (<em&…
View article: Downscaled surface mass balance in Antarctica: impacts of subsurface processes and large-scale atmospheric circulation
Downscaled surface mass balance in Antarctica: impacts of subsurface processes and large-scale atmospheric circulation Open
Antarctic surface mass balance (SMB) is largely determined by precipitation over the continent and subject to regional climate variability related to the Southern Annular Mode (SAM) and other climatic drivers at the large scale. Locally ho…
View article: Downscaled surface mass balance in Antarctica: impacts of subsurface processes and large-scale atmospheric circulation
Downscaled surface mass balance in Antarctica: impacts of subsurface processes and large-scale atmospheric circulation Open
Here is the surface mass balance calculated from a offline subsurface model, that is used in the paper Downscaled surface mass balance in Antarctica: impacts of subsurface processes and large-scale atmospheric circulation. More data are av…
View article: Downscaled surface mass balance in Antarctica: impacts of subsurface processes and large-scale atmospheric circulation
Downscaled surface mass balance in Antarctica: impacts of subsurface processes and large-scale atmospheric circulation Open
Here is the surface mass balance calculated from a offline subsurface model, that is used in the paper Downscaled surface mass balance in Antarctica: impacts of subsurface processes and large-scale atmospheric circulation. More data are av…
View article: Downscaled surface mass balance in Antarctica: impacts ofsubsurface processes and large-scale atmospheric circulation
Downscaled surface mass balance in Antarctica: impacts ofsubsurface processes and large-scale atmospheric circulation Open
Antarctic surface mass balance (SMB) is largely determined by precipitation over the continent and subject to regional climate variability related to the Southern Annular Mode (SAM) and other climatic drivers at the large scale. Locally ho…
View article: Antarctic Surface Mass Balance from 1980 to 2017
Antarctic Surface Mass Balance from 1980 to 2017 Open
<p>The regional climate model HIRHAM5 developed for Greenland ice sheet applications has now been updated to also simulate Antarctic conditions. The outputs of the Antarctic runs have been used to force an offline subsurface model, t…
View article: Feasibility study of high precision measurement of Earth Albedo in space
Feasibility study of high precision measurement of Earth Albedo in space Open
<p>The Earth Albedo is one of the important parameters in the study of climate change. In this work, the scientific background and mission analysis of a space based earthshine-telescope to observe Earth Albedo using relative photomet…
View article: Identifying robust bias adjustment methods for European extreme precipitation in a multi-model pseudo-reality setting
Identifying robust bias adjustment methods for European extreme precipitation in a multi-model pseudo-reality setting Open
Severe precipitation events occur rarely and are often localised in space and of short duration, but they are important for societal managing of infrastructure. Therefore, there is a demand for estimating future changes in the statistics o…
View article: 3.4 Reanalysis data
3.4 Reanalysis data Open
What are reanalysis data?Compare weather-or climate-model output to observations: Not only are the model outputs regularly gridded in time and space but are also complete.The availability of observations depends on the coverage, in space a…
View article: Identifying robust bias adjustment methods for extreme precipitation in a pseudo-reality setting
Identifying robust bias adjustment methods for extreme precipitation in a pseudo-reality setting Open
Severe precipitation events occur rarely and are often localized in space and of short duration; but they are important for societal managing of infrastructure. Therefore, there is a demand for estimating future changes in the statistics o…