A5072552795- Plant Water Relations and Carbon Dynamics
- Hydrology and Watershed Management Studies
- Soil and Unsaturated Flow
- Climate variability and models
- Soil Moisture and Remote Sensing
- Soil Geostatistics and Mapping
- Climate change and permafrost
- Flood Risk Assessment and Management
- Meteorological Phenomena and Simulations
- Geothermal Energy Systems and Applications
- Urban Heat Island Mitigation
- Peatlands and Wetlands Ecology
- Forest ecology and management
- Remote Sensing in Agriculture
- Soil erosion and sediment transport
- Soil Carbon and Nitrogen Dynamics
- Hydrology and Drought Analysis
- Atmospheric and Environmental Gas Dynamics
- Plant responses to elevated CO2
- Water resources management and optimization
- Leaf Properties and Growth Measurement
- Environmental and Agricultural Sciences
- Water-Energy-Food Nexus Studies
- Tree Root and Stability Studies
- Heat Transfer and Optimization
University of Reading
2016-2025
Soil Science Research Unit
2024
Reading Museum
2010
UK Centre for Ecology & Hydrology
1999
Graduate School Experimental Plant Sciences
1995-1997
Wageningen University & Research
1995-1997
Royal Netherlands Meteorological Institute
1996
Abstract. We describe the HadGEM2 family of climate configurations Met Office Unified Model, MetUM. The concept a model "family" comprises range specific incorporating different levels complexity but with common physical framework. includes atmosphere and ocean components, without vertical extension to include well-resolved stratosphere, an Earth-System (ES) component which dynamic vegetation, biology atmospheric chemistry. improvements designed address systematic errors encountered in...
Abstract. This paper presents the model SCOPE (Soil Canopy Observation, Photochemistry and Energy fluxes), which is a vertical (1-D) integrated radiative transfer energy balance model. The links visible to thermal infrared radiance spectra (0.4 50 μm) as observed above canopy fluxes of water, heat carbon dioxide, function vegetation structure, profiles temperature. Output spectrum outgoing radiation in viewing direction turbulent fluxes, photosynthesis chlorophyll fluorescence. A special...
Abstract Soil, through its various functions, plays a vital role in the Earth's ecosystems and provides multiple ecosystem services to humanity. Pedotransfer functions (PTFs) are simple complex knowledge rules that relate available soil information properties variables needed parameterize processes. In this paper, we review existing PTFs document new generation of developed different disciplines Earth system science. To meet methodological challenges for successful application modeling,...
Accurate estimates of how soil water stress affects plant transpiration are crucial for reliable land surface model (LSM) predictions. Current LSMs generally use a factor, β, dependent on moisture content, θ, that ranges linearly between β = 1 unstressed vegetation and 0 when wilting point is reached. This paper explores the feasibility replacing current approach with equations potential as their independent variable, or set involve hydraulic chemical signaling, thereby ensuring feedbacks...
Abstract Groundwater is by far the largest unfrozen freshwater resource on planet. It plays a critical role as bottom of hydrologic cycle, redistributing water in subsurface and supporting plants surface bodies. However, groundwater has historically been excluded or greatly simplified global models. In recent years, there an international push to develop scale modeling analysis. This progress provided some first steps. Still, much additional work will be needed achieve consistent framework...
This paper deals with the parameter kB−1, logarithm of ratio between momentum and heat roughness length, sparsely vegetated surfaces bare soil. The soil surface is included as a reference, since it fairly homogenous smooth, having no distinguishable elements. mean value kB−1 about 8 for vineyard 12 savannah. These values are significantly greater than = 2, which usually assumed to hold vegetation. small negative, agrees literature. A large variation during day measured all three surfaces....
Abstract. Agroecosystem models, regional and global climate numerical weather prediction models require adequate parameterization of soil hydraulic properties. These properties are fundamental for describing predicting water energy exchange processes at the transition zone between solid earth atmosphere, regulate evapotranspiration, infiltration runoff generation. Hydraulic parameters retention (WRC) conductivity (HCC) curves typically derived from texture via pedotransfer functions (PTFs)....
A large proportion of the global land surface is covered by pasture. The advent Sentinel satellites program provides free datasets with good spatiotemporal resolution that can be a valuable source information for monitoring pasture resources. We combined optical remote sensing data (proximal hyperspectral and 2A) radiative transfer model (PROSAIL) to estimate leaf Area Index (LAI), biomass, in dairy farming context. Three sites Southern England were used: two farms differed type management,...
Core Ideas Land surface models (LSMs) show a large variety in describing and upscaling infiltration. Soil structural effects on infiltration LSMs are mostly neglected. New soil databases may help to parameterize processes LSMs. Infiltration soils is key process that partitions precipitation at the land into runoff water enters profile. We reviewed basic principles of we analyzed approaches commonly used quantify as well its numerical implementation sensitivity model parameters. methods...
Knowledge of how water stress impacts the carbon and cycles is a key uncertainty in terrestrial biosphere models. We tested new profit maximization model, where photosynthetic uptake CO2 optimally traded against plant hydraulic function, as an alternative to empirical functions commonly used models regulate gas exchange during periods stress. conducted multi-site evaluation this model at ecosystem scale, before major droughts Europe. Additionally, we asked whether maximum conductance...
Abstract. Hydro-pedotransfer functions (PTFs) relate easy-to-measure and readily available soil information to hydraulic properties (SHPs) for applications in a wide range of process-based empirical models, thereby enabling the assessment effects on hydrological, biogeochemical, ecological processes. At least more than 4 decades research have been invested derive such relationships. However, while methods, data storage capacity, computational efficiency advanced, there are fundamental...
Urban greening solutions such as green roofs help improve residents’ thermal comfort and building insulation. However, not all plants provide the same level of cooling. This is partially due to differences in plant structure function, including different mechanisms that employ regulate leaf temperature. Ranking multiple traits involved regulation temperature (and, consequently, plants’ cooling ‘service’) well understood. We, therefore, investigated relative importance water loss, colour,...
Abstract Modeling of the land surface water‐, energy‐, and carbon balance provides insight into behavior Earth System, under current future conditions. Currently, there exists a substantial variability between model outputs, for range types, whereby differences input parameters could be an important reason. For large‐scale surface, hydrological, crop models, soil hydraulic properties (SHP) are required as inputs, which estimated from pedotransfer functions (PTFs). To analyze functional...
Abstract. Drought is predicted to increase in the future due climate change, bringing with it myriad impacts on ecosystems. Plants respond drier soils by reducing stomatal conductance order conserve water and avoid hydraulic damage. Despite importance of plant drought responses for global carbon cycle local regional feedbacks, land surface models are unable capture observed soil moisture stress. We assessed impact stress simulated gross primary productivity (GPP) latent energy flux (LE)...