A5026299709- Climate variability and models
- Geology and Paleoclimatology Research
- Tree-ring climate responses
- Oceanographic and Atmospheric Processes
- Plant Water Relations and Carbon Dynamics
- Meteorological Phenomena and Simulations
- Geophysics and Gravity Measurements
- Atmospheric and Environmental Gas Dynamics
- Archaeology and ancient environmental studies
- Climate change and permafrost
- Cryospheric studies and observations
- Marine and coastal ecosystems
- Tropical and Extratropical Cyclones Research
- Ocean Waves and Remote Sensing
- Geomagnetism and Paleomagnetism Studies
- Hydrology and Drought Analysis
- Arctic and Antarctic ice dynamics
- Historical and socio-economic studies of Spain and related regions
- Coastal and Marine Management
- Inorganic Fluorides and Related Compounds
- Global Energy and Sustainability Research
- Coastal and Marine Dynamics
- Marine and environmental studies
- Pleistocene-Era Hominins and Archaeology
- Geological Studies and Exploration
Helmholtz-Zentrum Hereon
2015-2024
Lower Saxony Institute for Historical Coastal Research
2005-2015
Coastal Impact
2008-2015
Philips (United Kingdom)
2014
L3S Research Center
2000-2013
Bolin Centre for Climate Research
2011-2013
Universität Hamburg
2012
Universidad Complutense de Madrid
2004-2011
Lamont-Doherty Earth Observatory
2011
University of Wisconsin–Madison
2011
The derivation of local scale information from integrations coarse-resolution general circulation models (GCM) with the help statistical fitted to present observations is generally referred as downscaling. In this paper a relatively simple analog method described and applied for downscaling purposes. According large-scale simulated by GCM associated variables observed simultaneously most similar pattern in pool historical observations. similarity patterns defined terms their coordinates...
Many climate impact applications require the equivalent of point observations and are highly sensitive to fine-scale variations that parameterised in coarse-scale models. This is especially true for regions complex topography, coastal or island locations, heterogeneous land-cover. guidance documents reviews statistical methods estimating from coarse scale projections.
A statistical strategy to deduct regional-scale features from climate general circulation model (GCM) simulations has been designed and tested. The main idea is interrelate the characteristic patterns of observed simultaneous variations regional parameters large-scale atmospheric flow using canonical correlation technique. North Atlantic sea level pressure (SLP) related regional, variable, winter (DJF) mean Iberian Peninsula rainfall. skill resulting shown by reproducing, a good...
Empirical reconstructions of the Northern Hemisphere (NH) temperature in past millennium based on multiproxy records depict small-amplitude variations followed by a clear warming trend two centuries. We use coupled atmosphere-ocean model simulation 1000 years as surrogate climate to test skill these methods, particularly at multidecadal and centennial time scales. Idealized proxy are represented simulated grid-point temperature, degraded with statistical noise. The variability NH is...
We analyse the winter and summer climatic signal following 15 major tropical volcanic eruptions over last half millennium based on multi‐proxy reconstructions for Europe. During first second post‐eruption years we find significant continental scale cooling somewhat drier conditions Central In Northern Hemispheric forcing induces an atmospheric circulation response that significantly follows a positive NAO state connected with overall warm anomaly wetter Our findings compare well GCM studies...
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 pre-industrial millennium is among the periods selected by Paleoclimate Model Intercomparison Project (PMIP) for experiments contributing to sixth phase of Coupled (CMIP6) and fourth PMIP (PMIP4). past1000 transient simulations serve investigate response (mainly) natural forcing under background conditions not too different from today, discriminate between forced internally generated variability on interannual centennial timescales. This paper describes motivation experimental...
Abstract. Based on the Baltic Earth Assessment Reports of this thematic issue in System Dynamics and recent peer-reviewed literature, current knowledge effects global warming past future changes climate Sea region is summarised assessed. The study an update Second Climate Change (BACC II) published 2015 focuses atmosphere, land, cryosphere, ocean, sediments, terrestrial marine biosphere. summaries gained palaeo-, historical, regional research, we find that main conclusions from earlier...
Abstract. There are a large number of geophysical processes affecting sea level dynamics and coastal erosion in the Baltic Sea region. These operate on range spatial temporal scales observed many other regions worldwide. This, along with outstanding long data records, makes unique laboratory for advancing our knowledge interactions between steering climate change context. Processes contributing to include still ongoing viscoelastic response Earth last deglaciation, contributions from global...
Abstract. Coastal environments, in particular heavily populated semi-enclosed marginal seas and coasts like the Baltic Sea region, are strongly affected by human activities. A multitude of impacts, including climate change, affect different compartments environment, these effects interact with each other. As part Earth Assessment Reports (BEAR), we present an inventory discussion human-induced factors processes affecting environment their interrelations. Some naturally occurring modified...
The ocean surface-atmosphere relationships in the North Atlantic area northern winter are empirically examined by canonical correlation analysis (CCA). This is performed from two different points of view. First, connection between atmospheric circulation anomalies, terms monthly mean sea level pressure (SLP) and standard deviation SLP (αSLP), surface temperature (SST) anomalies Ocean directly examined. Second, air-sea indirectly studied through their influence upon precipitation an likely to...
Abstract Climate records over the last millennium place twentieth-century warming in a longer historical context. Reconstructions of millennial temperatures show wide range variability, raising questions about reliability currently available reconstruction techniques and uniqueness late-twentieth-century warming. A calibration method is suggested that avoids loss low-frequency variance. new using this shows substantial variability 1500 yr. This record consistent with independent temperature...
A simple linear model is used to estimate the decadal response of extratropical ocean wind stress forcing, assuming a flat bottom, mean state at rest, and no dissipation. The barotropic fields are governed by time-dependent Sverdrup balance, baroclinic ones long Rossby wave equation. bounded coast in east radiation condition west. At each frequency, consists forced plus generated eastern boundary. For zonally independent propagates westward twice phase speed. assumed be stochastic with white...
The relationship between terrestrial deep soil temperature (TDST) and surface (SAT) at interannual centennial timescales has been investigated in a simulation of the last millennium with three‐dimensional climate model driven by estimations historical external forcing. TDST is loosely related to borehole profiles, which have recently used reconstruct long term trends centuries. Recently, questions about validity boreholes‐based reconstructions raised. In simulation, time scales connection...