A5021623506- Meteorological Phenomena and Simulations
- Climate variability and models
- Aeolian processes and effects
- Plant Water Relations and Carbon Dynamics
- Atmospheric aerosols and clouds
- Atmospheric and Environmental Gas Dynamics
- Hydrology and Watershed Management Studies
- Tropical and Extratropical Cyclones Research
- Wind and Air Flow Studies
- Tree-ring climate responses
- Precipitation Measurement and Analysis
- Hydrological Forecasting Using AI
- Solar Radiation and Photovoltaics
- Soil and Land Suitability Analysis
- Sugarcane Cultivation and Processing
- Advanced Computational Techniques and Applications
- African Botany and Ecology Studies
- Rangeland Management and Livestock Ecology
- Fire effects on ecosystems
- Plant responses to elevated CO2
- Biocrusts and Microbial Ecology
- Libraries and Information Services
- Climate Change and Geoengineering
- Wind Energy Research and Development
- Flood Risk Assessment and Management
University of Hohenheim
2014-2025
National Institute of Meteorology
2016
Abstract Land surface models incorporate a large number of process descriptions, containing multitude parameters. These parameters are typically read from tabulated input files. Some these might be fixed numbers in the computer code though, which hinder model agility during calibration. Here we identified 139 hard‐coded Noah land with multiple options (Noah‐MP). We performed Sobol' global sensitivity analysis Noah‐MP for specific set options, includes 42 out 71 standard and 75 The...
This research aims at assessing land suitability for large-scale agriculture using multiple spatial datasets which include climate conditions, water potential, soil capabilities, topography and management. The study case is in the Emirate of Abu Dhabi, UAE. aridity region requires accounting non-renewable sources like desalination treated sewage effluent (TSE) an accurate realistic assessment irrigated suitability. All were systematically aggregated analytical hierarchical process (AHP) a...
Irrigation in semi-arid regions induces thermal heterogeneity across a range of spatial scales that impacts the partitioning energy at surface, development atmospheric boundary layer, and bidirectional interactions between atmosphere surface. In this analysis, we use data from Land Surface Interactions with Atmosphere Iberian Semi-Arid Environment (LIAISE) experiment combined coupled land–atmosphere model to understand role irrigation-induced, on surface fluxes consequently, diurnal...
Large-scale afforestation is increasingly being considered as a negative emissions method for sequestering large quantities of atmospheric CO2 At the same time, regional weather modification methods, like cloud seeding, are used to counteract increasing water scarcity in arid regions. sustainable desert agroforestry plantations can contribute climate change mitigation and also be modify climate, particularly rainfall. Climate impacts from need well understood before considering...
Abstract The aerodynamic roughness length is a crucial parameter that controls surface variables including the horizontal wind, temperature, and heat fluxes. Despite its importance, in Weather Research Forecasting (WRF) model, this typically assigned predefined value, mostly based on dominant land‐use type. In work, first estimated from eddy‐covariance measurements at Al Ain United Arab Emirates (UAE), hyper‐arid region, then ingested into WRF. range 1.3–2.2 mm, one order smaller than...
Abstract. This study investigates an extreme weather event that impacted the United Arab Emirates (UAE) in March 2016, using Weather Research and Forecasting (WRF) model version 3.7.1 coupled with its hydrological modeling extension package (WRF-Hydro). Six-hourly forecasted forcing records at 0.5∘ spatial resolution, obtained from National Center for Environmental Prediction (NCEP) Global Forecast System (GFS), are used to drive three nested downscaling domains of both standalone WRF...
Abstract In this study, we present a five‐member Weather Research and Forecasting (WRF) physics ensemble over the Arabian Peninsula on convection‐permitting (CP) scale investigate ability to simulate convection precipitation by varying applied cloud microphysics planetary boundary layer (PBL) parametrizations. The study covers typical event ocurring during summertime eastern part of United Arab Emirates (UAE). Our results show that best are obtained using water‐ ice‐friendly aerosols...
Abstract The Weather Research and Forecasting (WRF) Model the Nonhydrostatic Icosahedral Atmospheric (NICAM) are forced with Global Forecast System (GFS) data run over United Arab Emirates (UAE) for two 4-day periods: one in cold season (16–18 December 2017) another warm (13–15 April 2018). models’ performance is evaluated against four observational datasets: weather station observations, eddy-covariance flux measurements at Al Ain, microwave radiometer–derived temperature profile,...
Abstract. Effective numerical weather forecasting is vital in arid regions like the United Arab Emirates (UAE) where extreme events heat waves, flash floods, and dust storms are severe. Hence, accurate of quantities surface temperatures humidity very important. To date, there have been few seasonal-to-annual scale verification studies with WRF at high spatial temporal resolution. This study employs a convection-permitting (2.7 km grid scale) simulation Noah-MP, daily forecast mode, from 1...
Abstract. Potential for regional climate engineering is gaining interest as a means of solving environmental problems like water scarcity and high temperatures. In the hyper-arid United Arab Emirates (UAE), reaching crisis point due to consumption over-extraction being exacerbated by change. To counteract this problem, UAE has conducted cloud-seeding operations intensive desalination many years but now considering other increasing resources. Very large “artificial black surfaces” (ABSs),...
Zusammenfassung Das System Land‐Atmosphäre umfasst den Boden, die Landbedeckung und untere Troposphäre. Die komplexen Prozesse in diesem sind gekoppelt über Austausch von Impuls, Energie Masse. Unter anderem spielt der Pflanzenbewuchs eine zentrale Rolle. Daher ist ein tiefgreifendes Verständnis dieses Systems fundamental für Genauigkeit Wettervorhersagen, mittelfristige bis subsaisonale Vorhersagen Klimaprognosen. Dazu gehört auch Vorhersage Extremereignissen wie Dürren.
We studied the convective boundary layer (CBL) processes and surface fluxes long-term statistics by using a combination of two Doppler lidars (DLs) an eddy-covariance station (EC) at Land-Atmosphere Feedback Observatory (LAFO), Stuttgart, Germany (Abbas et al., 2024). At LAFO (Späth al, 2023), one DL is continuously operated in vertical pointing mode, while second six-beam scanning both providing high-resolution data with resolutions 1 s 30 m. From this DLs, we derived profiles wind...
Abstract A thorough evaluation of the Weather Research and Forecasting (WRF) Model is conducted over United Arab Emirates, for period September 2017–August 2018. Two simulations are performed: one with default model settings (control run), another (experiment) an improved representation soil texture land use cover (LULC). The predictions evaluated against observations at 35 weather stations, radiosonde profiles coastal Abu Dhabi International Airport, surface fluxes from eddy-covariance...
Abstract. The quantification of land–atmosphere coupling strength is still challenging, particularly in the atmospheric segment local process chain. This part caused by a lack spatially comprehensive observations temperature and specific humidity which form verification basis for common process-based metrics. In this study, we aim at investigating where uncertainty moisture affects over Europe, how changes mean moisture, as well their vertical gradients, influence coupling. For purpose,...
Abstract Recent advances in technology permit the irrigation of dry, coastal areas, avoiding use fossil water and conflicts with other land (e.g., for food production). Consequently, it becomes reasonable to consider large-scale plantations mitigating increases atmospheric concentrations by carbon sequestration study local modifications weather climate. This work investigates impact Oman Sonora Desert Mexico assuming an area about 100 km × km. For this purpose, advanced surface–atmosphere...
Abstract. A 10 × km irrigated biomass plantation was simulated in an arid region of Israel to simulate diurnal energy balances during the summer 2012 (JJA). The goal is examine daytime horizontal flux gradients between and desert. Simulations were carried out within coupled WRF-NOAH atmosphere/land surface model. MODIS land data adjusted by prescribing tailored soil/plant parameters, adding a controllable sub-surface irrigation scheme NOAH. Two model cases studies compared – Impact Control....
Abstract It is a great concept to let nature do the work of revegetation, however in semi-arid and arid regions process natural succession, if it occurs at all, typically requires many years undisturbed development until an increase biomass becomes measurable, hence rather applied remote, sparsely populated may be underrated as measure restore native vegetation, particularly inhabited areas. What are factors that make successional processes successful, how expedite, enable their use for...
Abstract. This study investigates an extreme weather event that impacted the United Arab Emirates (UAE) in March 2016 using Weather Research and Forecasting (WRF) model version 3.7.1 coupled with its hydrological modeling extension package (Hydro). Six-hourly forecasted forcing records at 0.5o spatial resolution, obtained from NCEP Global Forecast System (GFS), are used to drive three nested downscaling domains of both standalone WRF WRF/WRF-Hydro configurations for recent flood-triggering...
Studies simulating the large-scale afforestation of African Sahel constantly find warning signals increased risk extreme temperatures and heatwaves resulting from changes in albedo latent heat flow. We review measures underlying three simulation studies, together with a restoration model which compartments are formed by greenbelts to enable succession savanna vegetation, protected hot wind drought. Savanna-like vegetation (around 20% woody plants) will show bright reflective surface drying...