Kirsten Warrach‐Sagi

ORCID: 0000-0003-2572-8527
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About
Contact & Profiles
Research Areas
  • Climate variability and models
  • Meteorological Phenomena and Simulations
  • Plant Water Relations and Carbon Dynamics
  • Cryospheric studies and observations
  • Atmospheric and Environmental Gas Dynamics
  • Hydrology and Watershed Management Studies
  • Climate change and permafrost
  • Soil Moisture and Remote Sensing
  • Precipitation Measurement and Analysis
  • Soil and Unsaturated Flow
  • Plant Ecology and Soil Science
  • Tree-ring climate responses
  • Climate Change Policy and Economics
  • Tropical and Extratropical Cyclones Research
  • Aeolian processes and effects
  • Wind and Air Flow Studies
  • Flood Risk Assessment and Management
  • Geophysics and Gravity Measurements
  • Atmospheric chemistry and aerosols
  • demographic modeling and climate adaptation
  • Climate change impacts on agriculture
  • Climate Change and Environmental Impact
  • Air Quality and Health Impacts
  • Soil Geostatistics and Mapping
  • Science and Climate Studies

University of Hohenheim
2015-2024

University of Kassel
2023

CMCC Foundation - Euro-Mediterranean Center on Climate Change
2023

Norwegian Meteorological Institute
2023

University of Graz
2022-2023

Brandenburg University of Technology Cottbus-Senftenberg
2023

Karlsruhe Institute of Technology
2022-2023

Helmholtz-Zentrum Hereon
1998-2023

Aristotle University of Thessaloniki
2022-2023

Royal Netherlands Meteorological Institute
2023

Abstract. EURO-CORDEX is an international climate downscaling initiative that aims to provide high-resolution scenarios for Europe. Here evaluation of the ERA-Interim-driven regional model (RCM) ensemble presented. The study documents performance individual models in representing basic spatiotemporal patterns European period 1989–2008. Model focuses on near-surface air temperature and precipitation, uses E-OBS data set as observational reference. consists 17 simulations carried out by seven...

10.5194/gmd-7-1297-2014 article EN cc-by Geoscientific model development 2014-07-10

Abstract. Despite considerable progress in recent years, output of both global and regional circulation models is still afflicted with biases to a degree that precludes its direct use, especially climate change impact studies. This well known, overcome this problem, bias correction (BC; i.e. the model towards observations post-processing step) has now become standard procedure In paper we argue BC currently often used an invalid way: it added GCM/RCM chain without sufficient proof...

10.5194/hess-16-3391-2012 article EN cc-by Hydrology and earth system sciences 2012-09-21

Abstract The European CORDEX (EURO-CORDEX) initiative is a large voluntary effort that seeks to advance regional climate and Earth system science in Europe. As part of the World Climate Research Programme (WCRP) - Coordinated Regional Downscaling Experiment (CORDEX), it shares broader goals providing model evaluation projection framework improving communication with both General Circulation Model (GCM) data user communities. EURO-CORDEX oversees design coordination ongoing ensembles...

10.1007/s10113-020-01606-9 article EN cc-by Regional Environmental Change 2020-04-23

Abstract This paper analyzes the ensemble of regional climate model (RCM) projections for Europe completed within EURO‐CORDEX project. Projections are available two greenhouse gas concentration scenarios RCP2.6 (22 members) and RCP8.5 (55 at 0.11° resolution from 11 RCMs driven by eight global models (GCMs). The RCM results compared with driving CMIP5 but also a subset last generation CMIP6 projections. Maximum warming is projected all ensembles in Northern winter, along maximum...

10.1029/2019jd032356 article EN Journal of Geophysical Research Atmospheres 2020-11-21

The use of regional climate model (RCM)-based projections for providing information in a research and service contexts is currently expanding very fast. This has been possible thanks to considerable effort developing comprehensive ensembles RCM projections, especially Europe, the EURO-CORDEX community (Jacob et al., 2014, 2020). As end 2019, developed set 55 historical scenario (RCP8.5) using 8 driving global models (GCMs) 11 RCMs. article presents ensemble including its design. We target...

10.1029/2019jd032344 article EN Journal of Geophysical Research Atmospheres 2020-11-21

Abstract Here we present the first multi-model ensemble of regional climate simulations at kilometer-scale horizontal grid spacing over a decade long period. A total 23 run with $$\sim $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>∼</mml:mo> </mml:math> 3 km, driven by ERA-Interim reanalysis, and performed 22 European research groups are analysed. Six different models (RCMs) represented in ensemble. The compared against available high-resolution precipitation...

10.1007/s00382-021-05708-w article EN cc-by Climate Dynamics 2021-04-09

Abstract. The summer of 2018 was an extraordinary season in climatological terms for northern and central Europe, bringing simultaneous, widespread, concurrent heat drought extremes large parts the continent with extensive impacts on agriculture, forests, water supply, socio-economic sector. Here, we present a comprehensive, multi-faceted analysis extreme particular focus Germany. heatwave first affected Scandinavia mid-July shifted towards Europe late July, while Iberia primarily early...

10.5194/nhess-23-1699-2023 article EN cc-by Natural hazards and earth system sciences 2023-05-08

Abstract. Land surface and hydrologic models (LSMs/HMs) are used at diverse spatial resolutions ranging from catchment-scale (1–10 km) to global-scale (over 50 applications. Applying the same model structure different scales requires that estimates similar fluxes independent of chosen resolution, i.e., fulfills a flux-matching condition across scales. An analysis state-of-the-art LSMs HMs reveals most do not have consistent parameter fields. Multiple experiments with mHM, Noah-MP,...

10.5194/hess-21-4323-2017 article EN cc-by Hydrology and earth system sciences 2017-09-01

The Weather Research and Forecast (WRF) model with its land surface NOAH was set up applied as regional climate over Europe. It forced the latest ERA-interim reanalysis data from 1989 to 2008 operated 0.33° 0.11° resolution. This study focuses on verification of monthly seasonal mean precipitation Germany, where a high quality dataset German Service is available. In particular, studied in orographic terrain southwestern Germany dry lowlands northeastern Germany. both regions very important...

10.1007/s00382-013-1727-7 article EN cc-by Climate Dynamics 2013-03-18

Abstract. The Land Use and Climate Across Scales Flagship Pilot Study (LUCAS FPS) is a coordinated community effort to improve the integration of land use change (LUC) in regional climate models (RCMs) quantify biogeophysical effects LUC on local Europe. In first phase LUCAS, nine RCMs are used explore impacts re-/afforestation over Europe: two idealized experiments representing respectively non-forested maximally forested Europe compared order spatial temporal variations sensitivity...

10.5194/esd-11-183-2020 article EN cc-by Earth System Dynamics 2020-02-20

The growing bioeconomy will require a greater supply of biomass in the future for both bioenergy and bio-based products. Today, many cropping systems (BCS) are suboptimal due to either social-ecological threats or technical limitations. In addition, competition land between bioenergy-crop cultivation, food-crop biodiversity conservation is expected increase as result continuous world population growth severe climate change effects. This study investigates how BCS can become more...

10.3390/agronomy9100605 article EN cc-by Agronomy 2019-10-02

Abstract Interactions between the land surface and atmosphere play a fundamental role in weather climate system. Here we present comparison of summertime land‐atmosphere coupling strength found subset ERA‐Interim‐driven European domain Coordinated Regional Climate Downscaling Experiment (EURO‐CORDEX) model ensemble (1989–2008). Most regional models (RCMs) reproduce overall soil moisture interannual variability, spatial patterns, annual cycles exchange fluxes for different zones suggested by...

10.1002/2016jd025476 article EN Journal of Geophysical Research Atmospheres 2016-12-09

Abstract Six simulations with the Weather Research and Forecasting (WRF) model differing in planetary boundary layer (PBL) schemes land surface models (LSMs) are investigated a case study western Germany during clear‐sky weather conditions. The were performed at 2 km resolution two local nonlocal PBL schemes, combined LSMs (NOAH NOAH‐MP). Resulting convective (CBL) features combination high‐resolution water vapor differential absorption lidar measurements an experimental area. Further,...

10.1002/2015jd023927 article EN cc-by-nc-nd Journal of Geophysical Research Atmospheres 2015-12-16

Abstract. EURO-CORDEX is an international climate downscaling initiative that aims to provide high-resolution scenarios for Europe. Here evaluation of the ERA-Interim-driven regional model (RCM) ensemble presented. The study documents performance individual models in representing basic spatio-temporal patterns European period 1989–2008. Model focuses on near-surface air temperature and precipitation, uses E-OBS dataset as observational reference. consists 17 simulations carried out by seven...

10.5194/gmdd-7-217-2014 article EN cc-by 2014-01-14

Interactions between the soil, vegetation, and atmospheric boundary layer require close attention when predicting water fluxes in hydrogeosystem, agricultural systems, weather, climate. However, land-surface schemes used large-scale models continue to show deficiencies consistently simulating of energy from subsurface through vegetation layers atmosphere. In this study, multiphysics version Noah model (Noah-MP) was identify processes, which are most crucial for a simultaneous simulation heat...

10.1002/2013wr014634 article EN Water Resources Research 2014-02-01

Abstract The biophysical effects of reforestation and afforestation (herein jointly called re/afforestation) on the diurnal temperature cycle in European summer are investigated by analyzing a regional climate model (RCM) ensemble, established within Land Use Climate Across Scales Flagship Pilot Study (LUCAS FPS). With this RCM two idealized experiments performed for Europe, one with continent maximized forest cover, which all forests turned into grassland. First, an in-depth analysis...

10.1175/jcli-d-19-0624.1 article EN Journal of Climate 2020-08-14
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