A5054677628- Climate variability and models
- Atmospheric and Environmental Gas Dynamics
- Plant Water Relations and Carbon Dynamics
- Meteorological Phenomena and Simulations
- Climate change impacts on agriculture
- Cryospheric studies and observations
- Climate Change Policy and Economics
- demographic modeling and climate adaptation
- Climate change and permafrost
- Climate Change and Health Impacts
- Geophysics and Gravity Measurements
- Geology and Paleoclimatology Research
- Urban Heat Island Mitigation
- Sustainability and Climate Change Governance
- Tree-ring climate responses
- Land Use and Ecosystem Services
- Global Energy and Sustainability Research
- Climate Change and Environmental Impact
- Climate Change Communication and Perception
- Water resources management and optimization
- Agriculture Sustainability and Environmental Impact
- Conservation, Biodiversity, and Resource Management
- Data Analysis with R
- Ecology and biodiversity studies
- Water-Energy-Food Nexus Studies
Climate Analytics
2018-2025
Humboldt-Universität zu Berlin
2024
ETH Zurich
2014-2024
Laboratoire des Sciences du Climat et de l'Environnement
2011
Université de Versailles Saint-Quentin-en-Yvelines
2011
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2011
Centre National de la Recherche Scientifique
2011
Irrigation affects climate conditions - and especially hot extremes in various regions across the globe. Yet how these climatic effects compare to other anthropogenic forcings is largely unknown. Here we provide observational model evidence that expanding irrigation has dampened historical warming during days, with particularly strong over South Asia. We show expansion can explain negative correlation between global observed changes daytime summer temperatures present-day extent. While...
Global emission reduction efforts continue to be insufficient meet the temperature goal of Paris Agreement
The extent of the Amazon rainforest is projected to drastically decrease in future decades because land-use changes. Previous climate modelling studies have found that biogeophysical effects Amazonian deforestation will likely increase surface temperatures and reduce precipitation locally. However, magnitude these changes potential existence tipping points underlying relationships still highly uncertain. Using a regional model at resolution about 50 km over South American continent, we...
Abstract. The Earth System Model Evaluation Tool (ESMValTool) is a community diagnostics and performance metrics tool designed to improve comprehensive routine evaluation of system models (ESMs) participating in the Coupled Intercomparison Project (CMIP). It has undergone rapid development since first release 2016 now well-tested that provides end-to-end provenance tracking ensure reproducibility. consists (1) an easy-to-install, well-documented Python package providing core functionalities...
Abstract Deforestation influences surface temperature locally (“local effects”), but also at neighboring or remote regions (“nonlocal effects”). Observations indicate that local effects induce a warming in most locations, while many climate models show global mean cooling when simulating deforestation. We nonlocal models, which is excluded from observations, may strongly contribute to these conflicting results. For the MPI‐ESM, globally averaged exceeds by factor of three, for deforestation...
Abstract During the industrial period, many regions experienced a reduction in forest cover and an expansion of agricultural areas, particular North America, northern Eurasia, South Asia. Here, results from Land-Use Climate, Identification Robust Impacts (LUCID) CMIP5 model intercomparison projects are compared order to investigate how land-cover changes (LCC) these have locally impacted biophysical land surface properties, like albedo evapotranspiration, this has affected seasonal mean...
Abstract Transformation pathways for the land sector in line with Paris Agreement depend on assumption of globally implemented greenhouse gas (GHG) emission pricing, and some cases also inclusive socio-economic development sustainable land-use practices. In such pathways, majority GHG reductions system is expected to come from low- middle-income countries, which currently account a large share emissions agriculture, forestry other use (AFOLU). However, countries economic, financial...
Abstract. Land cover and land management change (LCLMC) has been highlighted for its critical role in mitigation scenarios, both terms of global local adaptation. Yet, the climate effect individual LCLMC options, their dependence on background vs. non-local responses are still poorly understood across different Earth system models (ESMs). Here we simulate climatic effects using three state-of-the-art ESMs, including Community System Model (CESM), Max Planck Institute Meteorology (MPI-ESM)...
Abstract. Land cover and land management changes (LCLMCs) play an important role in achieving low-end warming scenarios through land-based mitigation. However, their effects on moisture fluxes recycling remain uncertain, although they have implications for the future viability of such strategies. Here, we analyse impact idealized LCLMC atmospheric transport three different Earth system model (ESMs): Community System Model (CESM), Max Planck Institute (MPI-ESM), European Consortium...
Abstract To achieve the 1.5°C target of Paris agreement, rapid, sustained, and deep emission reductions are required, which often includes negative emissions through land‐based mitigation. However, effects future land‐use change on climate not considered when quantifying climate‐induced impacts human heat stress labor capacity. By conducting simulations with three fully coupled Earth System Models, we project outdoor capacity for two contrasting scenarios under high‐ambition Achieving a...
Abstract. When quantifying temperature changes induced by deforestation (e.g., cooling in high latitudes, warming low latitudes), satellite data, situ observations, and climate models differ concerning the height at which is typically measured/simulated. In this study effects of on surface temperature, near-surface air lower atmospheric are compared analyzing biogeophysical large-scale Max Planck Institute Earth System Model (MPI-ESM) separately for local (which only apparent location...
Climate services have been criticised in the past for their tendency to only disseminate results from climate research, rather than seek understand and tailor needs of target audiences. Two surveys conducted within two projects, ISIpedia CLIMAP, assess users' impacts information all countries (with a foremost focus on West Africa) Senegal. The joint analysis showed that climate-impact is very relevant African respondents' activities but number barriers prevent existing fully fulfilling role...
Abstract. Modeling studies have shown the importance of biogeophysical effects deforestation on local climate conditions but also highlighted lack agreement across different models. Recently, remote-sensing observations been used to assess contrast in albedo, evapotranspiration (ET), and land surface temperature (LST) between forest nearby open a global scale. These provide an unprecedented opportunity evaluate ability models simulate forests. Here, we representation difference minus (i.e.,...
Abstract. The sensitivity of interglacial Greenland temperature to orbital and CO2 forcing is investigated using the NorthGRIP ice core data coupled ocean-atmosphere IPSL-CM4 model simulations. These simulations were conducted in response different configurations, increased concentrations. forcings cause very distinct simulated seasonal latitudinal water cycle changes, limiting analogies between last future climate. However, shows similar magnitudes Arctic summer warming climate feedbacks 2...
Abstract. The degree of trust placed in climate model projections is commensurate with how well their uncertainty can be quantified, particularly at timescales relevant to policy makers. On inter-annual decadal timescales, projection due natural variability dominates the local level and imperative describing near-term seasonal events but difficult quantify owing computational constraints producing large ensembles. To this extent, emulators are valuable tools for approximating runs, allowing...
Climate change represents a threat to the performance and persistence of urban forests multiple benefits they provide city dwellers. Here, we use novel approach identify species areas at high risk climate using Melbourne, Australia, as case study. We derive safety margin, calculated based on climatic tolerance two extreme variables (maximum temperature warmest month, MTWM; precipitation driest quarter, PDQ), for 474 tree recorded in Melbourne baseline (average 2011–2020) future (2041–2070)...
Abstract Global warming is expected to exacerbate heat stress. Additionally, biogeophysical effects of land cover and management changes (LCLMC) could substantially alter temperature relative humidity locally non‐locally. Thereby, LCLMC affect the occupational capacity safely perform physical work under hot environments (labor capacity). However, these have never been quantified globally using a multi‐model setup. Building on results from stylized sensitivity experiments (a) cropland...
Escalating impacts of climate change underscore the risk crossing thresholds socio-ecological systems and adaptation limits. However, limitations in provision actionable information may hinder an adequate response. Here we suggest a reversal traditional impact chain methodology as end-user focused approach to link local risks emission pathways. We outline socio-economic value judgment dimensions that can inform identification such apply this heat-mortality for city Berlin. To limit likely...
Abstract. Land cover and land management change (LCLMC) has been highlighted for its critical role in mitigation scenarios terms of both global local adaptation. Yet, the climate effect individual LCLMC options, their dependence on background climate, vs. non-local responses are still poorly understood across different Earth system models (ESMs). Here we simulate climatic effects using three state-of-the-art ESMs, including Community System Model (CESM), Max Planck Institute Meteorology...
Abstract Sustainable irrigation expansion over water limited croplands is an important measure to enhance agricultural yields and increase the resilience of crop production global warming. While existing assessments mainly illustrate biophysical potential for irrigation, socioeconomic factors such as weak governance or low income, that demonstrably impede successful implementation sustainable remain largely underexplored. Here we provide five scenarios deployment in 21st century integrated...