A5000215779- Geology and Paleoclimatology Research
- Tree-ring climate responses
- Climate variability and models
- Plant Water Relations and Carbon Dynamics
- Climate change and permafrost
- Archaeology and ancient environmental studies
- Methane Hydrates and Related Phenomena
- Pancreatic and Hepatic Oncology Research
- Atmospheric and Environmental Gas Dynamics
- Meteorological Phenomena and Simulations
- Nonlinear Dynamics and Pattern Formation
- stochastic dynamics and bifurcation
- Pleistocene-Era Hominins and Archaeology
- Cryospheric studies and observations
- Head and Neck Cancer Studies
- Financial Crisis of the 21st Century
- Salivary Gland Tumors Diagnosis and Treatment
- Dutch Social and Cultural Studies
- Bone Tumor Diagnosis and Treatments
- Historical Geography and Cartography
- Advanced Optimization Algorithms Research
- Geological Studies and Exploration
- Arctic and Antarctic ice dynamics
- Soil Geostatistics and Mapping
- Cancer Diagnosis and Treatment
LMU Klinikum
2023-2024
Ludwig-Maximilians-Universität München
2023-2024
Deutsche Flugsicherung (Germany)
2021
Hesse (Germany)
2021
Bjerknes Centre for Climate Research
2014-2020
University of Bergen
2014-2019
University Hospital of Zurich
2018
Technical University of Darmstadt
2007-2016
Justus-Liebig-Universität Gießen
2011-2016
Philipps University of Marburg
2003-2016
Abstract Reproducible climate reconstructions of the Common Era (1 CE to present) are key placing industrial-era warming into context natural climatic variability. Here we present a community-sourced database temperature-sensitive proxy records from PAGES2k initiative. The gathers 692 648 locations, including all continental regions and major ocean basins. trees, ice, sediment, corals, speleothems, documentary evidence, other archives. They range in length 50 2000 years, with median 547...
The spatial context is critical when assessing present-day climate anomalies, attributing them to potential forcings and making statements regarding their frequency severity in a long-term perspective. Recent international initiatives have expanded the number of high-quality proxy-records developed new statistical reconstruction methods. These advances allow more rigorous regional past temperature reconstructions and, turn, possibility evaluating models on policy-relevant, spatio-temporal...
Abstract The long-term relationship between temperature and hydroclimate has remained uncertain due to the short length of instrumental measurements inconsistent results from climate model simulations. This lack understanding is particularly critical with regard projected drought flood risks. Here we assess warm-season co-variability patterns over Europe back 850 CE using measurements, tree-ring based reconstructions, We find that temperature–hydroclimate in both reconstructed data turns...
Involvement of the cervical lymph nodes is most important prognostic factor for patients with oral/oropharyngeal squamous cell carcinoma (OSCC), and decision whether to electively treat clinically negative necks remains a controversial topic. Sentinel node biopsy (SNB) provides minimally invasive method determining disease status basin, without need formal neck dissection. This technique potentially improves accuracy histologic nodal staging avoids overtreating three-quarters this patient...
Abstract. Changes in climate affected human societies throughout the last millennium. While European cold periods 17th and 18th century have been assessed detail, earlier received much less attention due to sparse information available. New evidence from proxy archives, historical documentary sources model simulations permit us provide an interdisciplinary, systematic assessment of exceptionally period 15th century. Our includes role internal, unforced variability external forcing shaping...
Abstract. Reanalysis data show an increasing trend in Arctic precipitation over the 20th century, but changes are not homogenous across seasons or space. The observed hydroclimate expected to continue and possibly accelerate coming only affecting pan-Arctic natural ecosystems human activities, also lower latitudes through atmospheric ocean circulations. However, a lack of spatiotemporal observational makes reliable quantification change difficult, especially long-term context. To understand...
East Asia has experienced strong warming since the 1960s accompanied by an increased frequency of heat waves and shrinking glaciers over Tibetan Plateau Tien Shan. Here, we place recent warmth in a long-term perspective presenting new spatially resolved warm-season (May-September) temperature reconstruction for period 1-2000 CE using 59 multiproxy records from wide range Asian regions. Our Bayesian Hierarchical Model (BHM) based reconstructions generally agree with earlier shorter regional...
CR Climate Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 72:39-52 (2017) - DOI: https://doi.org/10.3354/cr01449 Environmental drivers of historical grain price variations in Europe Jan Esper1,*, Ulf Büntgen2,3,4, Sebastian Denzer1, Paul J. Krusic5,6, Jürg Luterbacher7,8, Regina Schäfer9, Rainer Schreg10, Johannes Werner11 1Department Geography, Gutenberg University, 55099 Mainz, Germany...
Abstract. In this article, the first spatially resolved and millennium-length summer (June–August) temperature reconstruction over Arctic sub-Arctic domain (north of 60° N) is presented. It based on a set 44 annually dated temperature-sensitive proxy archives various types from revised PAGES2k database supplemented with six new recently updated records. As major advance, an extension Bayesian BARCAST climate field (CF) technique provides means to treat dating uncertainties. This results not...
Abstract A pseudoproxy comparison is presented for two statistical methods used to derive annual climate field reconstructions (CFRs) Europe. The employed use the canonical correlation analysis (CCA) procedure by Smerdon et al. and Bayesian hierarchical model (BHM) method adopted from Tingley Huybers. Pseudoproxy experiments (PPEs) are constructed modeled temperature data sampled 1250-yr paleo-run of NCAR Community Climate System Model (CCSM) version 1.4 Ammann Pseudoproxies approximate...
Still today, the status of cervical lymph nodes is most important prognostic factor for head and neck cancer. So individual treatment concept lymphatic drainage depends on primary tumor as well presence or absence suspect in imaging diagnosis. Neck dissection may have either a therapeutic objective diagnostic one. The selective currently method choice patients with advanced cancers clinical N0 neck. For oncologic reasons, this procedure generally recommended acceptable functional aesthetic...
Abstract. The "Great Frost" of 1740 was one the coldest winters eighteenth century and impacted many countries all over Europe. years 1740–1741 have long been known as a period general crisis caused by harvest failures, high prices for staple foods, excess mortality. Vulnerabilities, coping capacities adaptation processes varied considerably among different countries. This paper investigates famine in Ireland applying multi-indicator model developed specifically integration an analysis...
Abstract. This study compares gridded European seasonal series of surface air temperature (SAT) and precipitation (PRE) reconstructions with a regional climate simulation over the period 1500–1990. The area is analysed separately for nine subareas that represent majority diversity in sector. In their spatial structure, an overall good agreement found between reconstructed simulated features across Europe, supporting consistency both products. Systematic biases data sets can be explained by...
Abstract. Reconstructions of the late-Holocene climate rely heavily upon proxies that are assumed to be accurately dated by layer counting, such as measurements tree rings, ice cores, and varved lake sediments. Considerable advances could achieved if time-uncertain were able included within these multiproxy reconstructions, time uncertainties recognized correctly modeled for commonly treated free age model errors. Current approaches accounting uncertainty generally limited repeating...
Long term memory (LTM) scaling behavior in worldwide tree-ring proxies and subsequent climate reconstructions is analyzed for compared with the structure inherent to instrumental temperature precipitation data. Detrended fluctuation analysis employed detect LTM, its exponent α used evaluate LTM. The results show that based on ring width measurements (mean ) contain more than records maximum latewood density ). Both exceed regional data ( temperature, precipitation) time scales ranging from 1...
Abstract Arctic climate is uniquely sensitive to ongoing warming. The feedbacks that drive this amplified response remain insufficiently quantified and misrepresented in model scenarios of future Comparison with paleotemperature reconstructions from past warm intervals can help close gap. Early Holocene (11.7–8.2 ka BP) an important target because temperatures were warmer than today. This study presents centennially resolved summer temperature three Svalbard lakes. We show fluctuated between...
ABSTRACT Observational data show that climate in the Southern Ocean region is rapidly changing. However, past instrumental period, our understanding of variability limited by a scarcity high‐resolution palaeoclimate records. Alpine glaciers, present on many islands, may provide such because changes their mass balance, extent and erosion rates often mark response to shifts. Rock flour, fine‐grained fraction glacial process, suspended meltwater streams transferred into sediments downstream...