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A Multi-GPU Program for Uncertainty-Aware Drainage Basin Delineation: Scalability benchmarking with country-wide data sets

Ville Makinen, Tapani Sarjakoski, Juha Oksanen, Jan Westerholm
2016 IEEE Geoscience and Remote Sensing Magazine  
Here we present a parallel uncertainty-aware drainage basin delineation algorithm and a multi-node GPU CUDA implementation along with scalability benchmarking.  ...  In uncertainty-aware drainage basin delineation, we apply a Monte Carlo simulation that further increases the processing demand by two to three orders of magnitude.  ...  DRAINAGE BASIN DELINEATION ALGORITHM We begin by describing the process of uncertainty-aware basin delineation and then outline the parallelization of the task to multiple GPUs.  ... 
doi:10.1109/mgrs.2016.2561405 fatcat:rh7mhdhgpfcn5o6dfqlajteyfm

Assessment of Agricultural Best Management Practices Using Models: Current Issues and Future Perspectives

Hui Xie, Lei Chen, Zhenyao Shen
2015 Water  
Watershed managers need to choose appropriate and effective modelling methods for a given set of conditions.  ...  Further improvements, including simplified tools, model integration, and incorporation of climate change and uncertainty analysis were also explored.  ...  National Science Foundation for Innovative Research Group (No. 51121003), the National Science Foundation for Distinguished Young Scholars (No. 51025933), and the National Natural Science Foundation of  ... 
doi:10.3390/w7031088 fatcat:3rwo4djygjf5xmsp3spmdaaeq4

Revisiting Flood Hazard Assessment Practices under a Hybrid Stochastic Simulation Framework

Andreas Efstratiadis, Panagiotis Dimas, George Pouliasis, Ioannis Tsoukalas, Panagiotis Kossieris, Vasilis Bellos, Georgia-Konstantina Sakki, Christos Makropoulos, Spyridon Michas
2022 Water  
These are addressed through the implementation of a series of cascade modules, based on publicly available and open-source software.  ...  Moreover, the hydrodynamic processes are simulated by a hybrid 1D/2D modeling approach, which offers a good compromise between computational efficiency and accuracy.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/w14030457 fatcat:kjewld7rtvge3fmdiw4wg4mnze

Decision support model for assessing aquifer pollution hazard and prioritizing groundwater resources management in the wet Pampa plain, Argentina

M. Lourdes Lima, Asunción Romanelli, Héctor E. Massone
2012 Environmental Monitoring & Assessment  
This paper gives an account of the implementation of a decision support system for assessing aquifer pollution hazard and prioritizing subwatersheds for groundwater resources management in the southeastern  ...  In the logic model, aquifer pollution hazard is assessed as a function of two primary topics: groundwater and soil conditions.  ...  Two of the authors (MLL and AR) are indebted to the National Scientific and Technical Research Council (CONICET) for fellowship support. The authors would like to thank Keith M.  ... 
doi:10.1007/s10661-012-2930-4 pmid:23054292 fatcat:qqrz2xf7bvamplo6acyxurunky

Uncertainties associated with digital elevation models for hydrologic applications: a review

S. Wechsler
2006 Hydrology and Earth System Sciences Discussions  
.: Uncertainty and sensitivity analysis: tools for GIS-based model implementation, Int.  ...  Based on these understandings, the tasks are to develop and implement methods to quantify and communicate the uncertainty associated with the propagation of errors in 20 spatial data analyses.  ...  More recently, a "process convolution" or spatial moving averages approach to the generation of random error fields was used to evaluate the delineation of drainage basins that were found to be very sensitive  ... 
doi:10.5194/hessd-3-2343-2006 fatcat:fbaxlxht7jaczazen765sqzosy

Uncertainties associated with digital elevation models for hydrologic applications: a review

S. P. Wechsler
2007 Hydrology and Earth System Sciences  
.: Uncertainty and sensitivity analysis: tools for GIS-based model implementation, Int.  ...  Based on these understandings, the tasks are to develop and implement methods to quantify and communicate the uncertainty associated with the propagation of errors in 20 spatial data analyses.  ...  More recently, a "process convolution" or spatial moving averages approach to the generation of random error fields was used to evaluate the delineation of drainage basins that were found to be very sensitive  ... 
doi:10.5194/hess-11-1481-2007 fatcat:w4ud7gtt7nd5ziyzz4es4uyq5i

Development of flood alert application in Mushim stream watershed Korea

Muhammad Azam, Hyung San Kim, Seung Jin Maeng
2017 International Journal of Disaster Risk Reduction  
A B S T R A C T Korea repeatedly experiences flash floods and droughts that cause traumatic environmental conditions with huge economic impact.  ...  The findings of this study are expected to be used as basic data required for designing of flood mitigation measures at Mushim stream watershed to cope with the flash flood events in future.  ...  Acknowledgment This research was supported by a Grant (16RDRP-B066173-03) from Regional Development Research Program funded by Ministry of Land, Infrastructure and Transport of Korean Government.  ... 
doi:10.1016/j.ijdrr.2016.11.008 fatcat:4i4f5mheyrbubf35ymnpnqiuf4

Recent Advances in Real-Time Pluvial Flash Flood Forecasting

Andre D. L. Zanchetta, Paulin Coulibaly
2020 Water  
as assembling approaches for uncertainty estimation.  ...  This work provides a summary and description of recent advances related to insights on atmospheric conditions that precede extreme rainfall events, to the development of monitoring systems of relevant  ...  In the United Kingdom (UK), a dual-system approach has been adopted.  ... 
doi:10.3390/w12020570 fatcat:ptpe4crj6jdanntu422iszle7y

Geostatistical prediction of flow-duration curves

A. Pugliese, A. Castellarin, A. Brath
2013 Hydrology and Earth System Sciences Discussions  
Castellarin et al., 2013) . 5 Because of their ability to provide a simple yet comprehensive graphical view of the overall historical variability of streamflows in a river basin, from floods to low-flows  ...  signature of the hydrological behaviour of a given basin, as it results from the interplay of climate, size, morphology, and permeability of the basin; a statistical hydrologist would refer to an FDC as  ...  · CF, where MAP is the Mean Annual Precipitation, A is the drainage area and CF is a unit-conversion factor.  ... 
doi:10.5194/hessd-10-13053-2013 fatcat:cswqoqnjlnaqxdqwxkx3cpshq4

Hydrological forecasts and projections for improved decision-making in the water sector in Europe

Luis Samaniego, Stephan Thober, Niko Wanders, Ming Pan, Oldrich Rakovec, Justin Sheffield, Eric F. Wood, Christel Prudhomme, Gwyn Rees, Helen Houghton-Carr, Matthew Fry, Katie Smith (+6 others)
2019 Bulletin of The American Meteorological Society - (BAMS)  
The Global dataset was used for delineating river basins at those locations that were not covered by the EU-DEM dataset.  ...  Note, however, that a smaller ensemble might not capture the full uncertainty of the hydrological and meteorological combinations.  ... 
doi:10.1175/bams-d-17-0274.1 fatcat:iuswwn4tynacdkctlvjotrruc4

Massively parallel landscape-evolution modelling using general purpose graphical processing units

A. S. McGough, S. Liang, M. Rapoportas, R. Grey, G. Kumar Vinod, D. Maddy, A. Trueman, J. Wainwright
2012 2012 19th International Conference on High Performance Computing  
The massively parallel programming environment offered through General Purpose Graphical Processing Units offers the potential for multiple orders of magnitude speedup in code execution times.  ...  The process of Landscape-Evolution Modelling is an example of such a problem.  ...  Section IV discusses massively parallel processing including a description of the General Purpose Graphical Processing units and the Compute Unified Device language.  ... 
doi:10.1109/hipc.2012.6507488 dblp:conf/hipc/McGoughLRGVMTW12 fatcat:mszd4dtdbne6jojzjqj4dq25va

Catchments, sub-catchments and private spaces: Scale and process in managing microbial pollution from source to sea

Michael Winter, David M. Oliver, Rob Fish, A. Louise Heathwaite, David Chadwick, Chris Hodgson
2011 Environmental Science and Policy  
He is a rural policy specialist and a rural sociologist with particular interests in applying interdisciplinary approaches to policy-relevant research and in direct engagement in the policy process.  ...  Further the paper suggests that many of the management decisions relevant to water quality are made by land occupiers and, therefore, that the identification of relevant socio-spatial units -the 'private  ...  A higher proportion of farmers allowed stock to drink from watercourses, rather than permitting full access (77%).  ... 
doi:10.1016/j.envsci.2010.10.011 fatcat:f3nqsszaezdqrd7lagvh2llady

Vipava River Basin Adaptation Plan

Manca Magjar, Peter Suhadolnik, Sašo Šantl, Špela Vrhovec, Aleksandra Krivograd Klemenčič, Nataša Smolar
2016 Zenodo  
Therefore, the objective of the adaptation plan is the delineation of water management options that aim to implement sustainable water management in the Vipava river basin for the period until 2030.  ...  The specific aim of the Vipava river basin adaptation plan is to increase the resilience of the social and Ecologic Instituteal system of the Vipava river basin and to facilitate a proactive response to  ...  into the sea at a single river mouth, estuary or delta; it is a natural geographical and hydrological unit that is used e.g. by the European legislation to manage a single drainage area [20]  River  ... 
doi:10.5281/zenodo.439502 fatcat:3ziuwzukwvc2zjsth367sbbb2m

The value of probabilistic prediction

Roberto Buizza
2008 Atmospheric Science Letters  
A major source of uncertainty is due to the weather or meteorological forcing.  ...  The main research goal of this dissertation is to develop, implement and verify a new regional hydrological ensemble prediction system (RHEPS), comprised by a numerical weather prediction (NWP) model,  ...  The model uses a graphical technique that consists of four quadrants.  ... 
doi:10.1002/asl.170 fatcat:vosmrjardvg43mcqmb7gzsggia

Municipal Solid Waste Landfill Site Selection Based on Fuzzy-AHP and Geoinformation Techniques in Asir Region Saudi Arabia

Javed Mallick
2021 Sustainability  
The study provides an integrated framework with a focus on structuring the decision-making process for the landfill suitability site map.  ...  In order to understand the procedures that affect the suitability of landfill sites, the integrated GIS-based fuzzy-AHP-MCDA method was implemented to appropriate landfill site for Abha-Khamis-Mushyet  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/su13031538 fatcat:mnryyq2bx5hbrdo7jchk5wamme
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