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Submit to EGU 2019 - Abstracts due: 10th Jan. 13:00 CET

ISMC supported Sessions:

 

 

 

 

 

 

 

 

Detailed session infos:

Pedotransfer functions (PTFs) are developed and applied in assorted disciplines of the Earth system science for modeling purposes. They are knowledge rules of various complexity relating available soil information to soil properties and variables which are needed to parameterize soil processes. Initially, PTFs were developed to estimate soil hydraulic properties, and their field of application has considerably expanded over the last two decades.

We expect this session to provide a fruitful environment with presentations and discussion on the development, application and evaluation of PTFs iv various disciplines of Earth system sciences. We encourage contributions from different covering topics that need further research such as PTFs for biogeochemical and biological processes, methodological developments including suitable extrapolation and upscaling techniques, and assessments of the uncertainty in estimated parameters or processes.

Modeling soil and vadose zone processes is vital for estimating physical states, parameters and fluxes from the bedrock to the atmosphere. While the media soil, air and water physically affect biogeochemical processes, transport of nutrients and pollutants, their implications on ecosystem functions and services, and terrestrial storage capacities are vital to the understanding of global, land use and climate change. This session aims to bring together scientists advancing the current status in modelling soil processes from the pore to the catchment and continental scale. We welcome contributions with a specific focus on soil hydrological processes but also those that address the role of soil structure on land surface processes, soil biogeochemical processes and their interactions with hydrology, transport of pollutants, soil vegetation atmosphere modelling and root-soil processes.

Pedotransfer functions (PTFs) are developed and applied in assorted disciplines of the Earth system science for modeling purposes. They are knowledge rules of various complexity relating available soil information to soil properties and variables which are needed to parameterize soil processes. Initially, PTFs were developed to estimate soil hydraulic properties, and their field of application has considerably expanded over the last two decades.
We expect this session to provide a fruitful environment with presentations and discussion on the development, application and evaluation of PTFs iv various disciplines of Earth system sciences. We encourage contributions from different covering topics that need further research such as PTFs for biogeochemical and biological processes, methodological developments including suitable extrapolation and upscaling techniques, and assessments of the uncertainty in estimated parameters or processes.

  • Extreme Vadose Zone (Convener: Jan Vanderborght  | Co-conveners: Nicholas Jarvis , Nunzio Romano)

The summer of 2018 broke several long term meteorological records in several parts of Europe. In this session, we would like to discuss how these extreme weather conditions led to extreme conditions in the vadose zone and how these extreme conditions affected vadose zone processes and functions. Therefore, we invite for contributions that report on observations of vadose zone conditions and processes from soil observation networks, lysimeter stations, ecotrons, … , during years with extreme meteorological conditions. These observations are important to evaluate the impact of extreme meteorological conditions on soil processes, elucidate the interactions between soil, vegetation, and climate, and understand how changes in climate, with an anticipated increase in extreme conditions, will affect soil processes and ecosystem functions/services. Also studies that try to predict the impact of extreme meteorological conditions on vadose zone conditions, processes, and functioning and that identify knowledge gaps are solicited.

In this session, we invite contributions related to the integration of a) system monitoring and data processing, b) soil water and biochemical process quantification, c) process scaling and d) system understanding and management strategies. In particular, we encourage studies applying cross-disciplinary and cross-scale approaches - whether based on statistical techniques, theoretical conceptualisation or novel physical-biogeochemical models - which critically examine their sampling design, conceptual presumptions and scaling issues.

Numerical models are flexible tools to describe fluxes of water, energy and matter in the groundwater-vadose zone-vegetation-atmosphere continuum. Even physically or process-based models rely on empirical parameters of unknown system properties and have to be determined by model-data-fusion at the scale of interest. Furthermore, state estimation methods are nowadays applied to update state variables and minimize model error. Joint state and parameter estimation methods have been developed to combine these two worlds. This session invites contributions on model-data-fusion in the vadose zone and its neighboring compartments with a focus on:
- improved methods to describe model error and prediction uncertainty,
- methods to disentangle parameter, forcing and model error,
- robust estimation techniques capable of handling non-Gaussian and correlated errors,
- assimilation of data from various sources,
- multi-model ensembles to improve uncertainty quantification,
- optimization of experiments and measurement campaigns in the lab and in the field to maximize information content and minimize uncertainty,
- model adequacy testing and model validation.
We are looking forward to receiving contributions which cover the whole range of scales: laboratory, field, pedon, and watershed scale.

Soil erosion (by water and wind) has been accelerating significantly since the start of agriculture, mobilizing not only large amounts of carbon but also nutrients such as nitrogen and phosphorus. Erosion-induced lateral fluxes of carbon and nutrients alter soil fertility which affects plant productivity and carbon sequestration potential of ecosystems. In addition, the export of nutrients from agricultural lands to aquatic systems can lead to eutrophication with negative impacts on ecosystem functioning. The impacts of soil erosion on the biogeochemical cycles are largely unquantified at regional and global scales and commonly omitted in land surface models. This session focusses on empirical and modelling studies that provide novel methods or data to quantify erosion-induced lateral transfers of carbon and nutrients and their impacts at large spatial scales.

 
 

 

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