Presentation given by Darius Bazazi, GeoPlace, as part of the EDINA Geoforum 2014 event on Thursday 19th June 2014 at the Informatics Forum, University of Edinburgh.
Presentation given by Peter Gibbs, Met Office and BBC broadcast meteorologist, as part of the EDINA Geoforum 2014 event on Thursday 19th June 2014 at the Informatics Forum, University of Edinburgh.
The talk will be divided into two parts. The first one is about geospatial open data and several Copernicus services where those data can be downloaded. The second one is about Forest and Climate project, as an example of geospatial analysis. The aim of the project was to identify the most suitable area for afforestation in Serbia by using satellite and Earth observation data. The results can be found at https://sumeiklima.org/.
This the presentation I gave for my thesis defense. It\'s entitled "Using bioclimatic envelope modelling to incorporate spatial and temporal dynamics of climate change into conservation planning".
The climate and earth sciences have recently undergone a rapid transformation from a data-poor
to a data-rich environment. In particular, massive amount of data about Earth and its
environment is now continuously being generated by a large number of Earth observing satellites
as well as physics-based earth system models running on large-scale computational platforms.
These massive and information-rich datasets offer huge potential for understanding how the
Earth's climate and ecosystem have been changing and how they are being impacted by humans’
actions. This talk will discuss various challenges involved in analyzing these massive data sets
as well as opportunities they present for both advancing machine learning as well as the science
of climate change in the context of monitoring the state of the tropical forests and surface water
on a global scale.
Presentation given by Peter Gibbs, Met Office and BBC broadcast meteorologist, as part of the EDINA Geoforum 2014 event on Thursday 19th June 2014 at the Informatics Forum, University of Edinburgh.
The talk will be divided into two parts. The first one is about geospatial open data and several Copernicus services where those data can be downloaded. The second one is about Forest and Climate project, as an example of geospatial analysis. The aim of the project was to identify the most suitable area for afforestation in Serbia by using satellite and Earth observation data. The results can be found at https://sumeiklima.org/.
This the presentation I gave for my thesis defense. It\'s entitled "Using bioclimatic envelope modelling to incorporate spatial and temporal dynamics of climate change into conservation planning".
The climate and earth sciences have recently undergone a rapid transformation from a data-poor
to a data-rich environment. In particular, massive amount of data about Earth and its
environment is now continuously being generated by a large number of Earth observing satellites
as well as physics-based earth system models running on large-scale computational platforms.
These massive and information-rich datasets offer huge potential for understanding how the
Earth's climate and ecosystem have been changing and how they are being impacted by humans’
actions. This talk will discuss various challenges involved in analyzing these massive data sets
as well as opportunities they present for both advancing machine learning as well as the science
of climate change in the context of monitoring the state of the tropical forests and surface water
on a global scale.
Evaluating Satellite Precipitation Error Propagation in Runoff Simulations of...Yiwen Mei
This study investigates the error characteristics of six quasi-global satellite precipitation products and associated error propagation in flow simulations for 16 mountainous basin scales (areas ranging from 255 to 6967 km2) and two different periods (May-Aug & Sep-Nov) in northeast Italy. The satellite products used in this study are 3B42-CCA, 3B42-V7, CMORPH and PERSIANN with their respect gauge-adjusted products. To evaluate the error propagation in flood simulations satellite precipitation datasets were used to force a gauge-calibrated hydrologic model to simulate runoff for the 16 basins, and comparing them to the gauge-driven simulated hydrographs for a range of moderate to high flood events spanning a nine-year period (2002 to 2009). Statistics describing the systematic and random error, the temporal similarity and error ratios between precipitation and runoff are presented.
DSD-INT 2017 Open-access Sentinel processing: Demo and case North Sea water q...Deltares
Presentation by Eva Stierman and Marieke Eleveld (Deltares) at the Symposium Earth Observation and Data Science, during Delft Software Days - Edition 2017. Friday, 3 November 2017, Delft.
Summary of my most recent results, with a note on potential applications. Was presented at the the 2010 CG/AR (Center for Geosciences and Atmospheric Research) Annual Program Review.
Presentation given by Carol Blackwood, EDINA, as part of the EDINA Geoforum 2014 event on Thursday 19th June 2014 at the Informatics Forum, University of Edinburgh.
Presentation given by Addy Pope, EDINA, as part of the EDINA Digimap Geoforum 2014 on Thursday 19th June 2014 at the Informatics Forum, University of Edinburgh
Evaluating Satellite Precipitation Error Propagation in Runoff Simulations of...Yiwen Mei
This study investigates the error characteristics of six quasi-global satellite precipitation products and associated error propagation in flow simulations for 16 mountainous basin scales (areas ranging from 255 to 6967 km2) and two different periods (May-Aug & Sep-Nov) in northeast Italy. The satellite products used in this study are 3B42-CCA, 3B42-V7, CMORPH and PERSIANN with their respect gauge-adjusted products. To evaluate the error propagation in flood simulations satellite precipitation datasets were used to force a gauge-calibrated hydrologic model to simulate runoff for the 16 basins, and comparing them to the gauge-driven simulated hydrographs for a range of moderate to high flood events spanning a nine-year period (2002 to 2009). Statistics describing the systematic and random error, the temporal similarity and error ratios between precipitation and runoff are presented.
DSD-INT 2017 Open-access Sentinel processing: Demo and case North Sea water q...Deltares
Presentation by Eva Stierman and Marieke Eleveld (Deltares) at the Symposium Earth Observation and Data Science, during Delft Software Days - Edition 2017. Friday, 3 November 2017, Delft.
Summary of my most recent results, with a note on potential applications. Was presented at the the 2010 CG/AR (Center for Geosciences and Atmospheric Research) Annual Program Review.
Presentation given by Carol Blackwood, EDINA, as part of the EDINA Geoforum 2014 event on Thursday 19th June 2014 at the Informatics Forum, University of Edinburgh.
Presentation given by Addy Pope, EDINA, as part of the EDINA Digimap Geoforum 2014 on Thursday 19th June 2014 at the Informatics Forum, University of Edinburgh
Presentation given by Guy McGarva, EDINA, as part of the EDINA Geoforum 2014 event on Thursday 19th June 2014 at the Informatics Forum, University of Edinburgh.
A talk by Dr. Phil Bartie about Spatial Data, how he has used it, issues of quality and how Digimap has helped him by making it available throughout his academic career.
Trevor Draeseke's GIS MSc Project, delivering an Augmented Reality viewer that shows the geology of Arthur's Seat, Edinburgh, overlayed on the camera view of a mobile device. Much of the data for the project came from Digimap.
Presentation given by Guy McGarva, EDINA Geo User Support at GeoForum2015, University of Greenwich, 16 June 2015 on New and Enhanced features coming to Geo and Digimap Services.
A presentation about how data from Digimap has helped to find quarries used in the production of stone for Hadrian's Wall. The research was carried out by Kathleen O'Donnell as part of her MSC and will be continued in a PhD.
A presentation highlighting how Getmapping's Aerial Imagery will be incorporated into the Digimap Service. The presentation was given at Geoforum 2016 at the Institute of Geography, University of Edinburgh.
Drought monitoring, Precipitation statistics, and water balance with freely a...AngelosAlamanos
The aim of this study is to showcase and discuss these new technologies for hydrometeorological studies. Six of NASA’s web-repositories that can be used to freely download and
visualise such spatial and/or time-series factors are listed and explained with examples for Ireland: ways
to access hydrological, meteorological, soil, vegetation and socio-economic data are shown, and
estimations of various precipitations statistics, anomalies, and water balance are presented for monthly
and seasonal analyses. The advantages, disadvantages and limitations of the satellite datasets are
discussed to provide useful recommendations about their proper use, based on purpose, scale, precision,
time requirement, and modelling-expansion criteria.
Streamflow simulation using radar-based precipitation applied to the Illinois...Alireza Safari
This paper describes the application of a spatially distributed hydrological model WetSpa (Water and Energy Transfer between Soil, Plants and Atmosphere) using radar-based rainfall data provide by the United States Hydrology Laboratory of NOAA's National Weather Service for a distributed model intercomparison project. The model is applied to the
river basin above Tahlequah hydrometry station with 30-m spatial resolution and one hour time--step for a total simulation period of 6 years. Rainfall inputs are derived from radar. The distributed model parameters are based on an extensive database of watershed characteristics available for the region, including digital maps of DEM, soil type, and land use. The model is calibrated and validated on part of the river flow records. The simulated hydrograph shows a good correspondence with observation (Nash efficiency coeffiecient >80%, indicating that the model is able to simulate the relevant hydrologic processes in the basin accurately.
A knowledge-based model for identifying and mapping tropical wetlands and pea...ExternalEvents
This presentation was presented during the 2 Parallel session on Theme 3.1, Managing SOC in: Soils with high SOC – peatlands, permafrost, and black soils, of the Global Symposium on Soil Organic Carbon that took place in Rome 21-23 March 2017. The presentation was made by Mr. Thomas Gumbricht, from Center for International Forestry Research – Indonesia, in FAO Hq, Rome
Use of Satellite Data for Feasibility Study And Preliminary Design Project Re...IJERDJOURNAL
ABSTRACT: In the developing countries like India, need of infrastructure is very high as compared to the available resources. The various organizations put their demands to state and center government for sanction of their project, government depends upon its various department to provide an approximate cost so that priorities can be assigned. The conventional procedure depends upon the land surveying, collection of data from various departments resulting in delay in necessary decision making or some time shelving due to unreasonable cost estimate due to field data being very old. Survey of India, The National Survey and Mapping Organization single handily taking this responsibility thus up gradation of data is far behind the actual development. From the satellite data, which is available in the form of images and terrains (even in 3d LiDAR points for some areas) is very useful for Feasibility Study, and Preliminary Project Report. In the present study natural drain named „Chai Nala‟ meanders through the prime property of Greater Mohali Area Development Authority (GMADA) thus making a big chunk of commercial land inoperative. It was proposed to straighten and channelize to reclaim the land from drain regime. Being the precious land department wanted the most economical and technically sound design without taking any risk. It was decided to counter check the hydraulic data, ground profile, acquired from the Punjab Irrigation Department with the satellite data and Differential Global Positioning System (DGPS). The data from the Google Earth was acquired using Cad Earth software and water shed analysis was carried out using Autodesk Civil 3D software. Comparison of results shows that this technique is quite useful and can be for preliminary feasibility and project preparation. Thus saving huge money and time.
A study confined to the lower tapi basin in Gujarat, India to find out the primary causes for 2006 floods in Surat city. The study involves collection of topographical data from the local geological survey organization, rainfall data from meteorological department of india and the application of HEC-HMS software from US Army corps of engineers to identify the primary cause of the runoff.
A look at the research being carried out by Dr Stuart Dunn at Kings College London. This includes his work on rediscovering Corpse Paths in Great Britain.
A presentation by Clare Rowland from the Centre for Ecology and Hydrology given at EDINA's GeoForum 2017 about the new Landcover 2015 data now available in Environment Digimap.
A presentation by John Murray from Fusion Data Science given at EDINA's GeoForum 2017 about the use of Lidar Data and the technology and techniques that can be used on it to create useful datasets.
Slides accompanying the presentation:"Reference Rot in Theses: A HiberActive Pilot", a 10x10 session (10 slides over 10 minutes) presented by Nicola Osborne (EDINA, University of Edinburgh). This presentation was part of Repository Fringe 2017 (#rfringe17) held on 3rd August 2017 in Edinburgh. The slides describe a project to develop Site2Cite, a new (pilot) tool for researchers to archive their web citations and ensure their readers can access that archive copy should the website change over time (including "Reference Rot" and "Content Drift").
Slides accompanying the "If I Googled You, What Would I Find? Managing your digital footprint" session at the CILIPS Conference 2017: Strategies for Success, presented at the Apex Hotel, Dundee, on Tuesday 6th June 2017 by Nicola Osborne, EDINA Digital Education Manager.
"Managing your Digital Footprint : Taking control of the metadata and tracks and traces that define us online" invited presentation for CIG Scotland's 7th Metadata & Web 2.0 Seminar: "Somewhere over the Rainbow: our metadata online, past, present & future", which took place at the National Library of Scotland, 5th April 2017.
Slides accompanying Nicola Osborne's(EDINA Digital Education Manager) session on "Social media and blogging to develop and communicate research in the arts and humanities" at the "Academic Publishing: Routes to Success" event held at the University of Stirling on 23rd January 2017.
"Enhancing your research impact through social media" - presentation given by Nicola Osborne, EDINA Digital Education Manager, at the Edinburgh Postgraduate Law Conference 2017 (19th January 2017).
Social Media in Marketing in Support of Your Personal Brand - Nicola Osborne, EDINA Digital Education Manager, for Abertay University (Dundee) 4th Year Marketing Students.
Best Practice for Social Media in Teaching & Learning Contexts, slides accompanying a presentation by Nicola Osborne, EDINA Digital Education Manager, for Abertay University (Dundee). The hashtag for this event was #AbTLEJan2017.
Short slides produced for the "Crowd-Sourcing Data and Citizen Science" Breakout Session at the FCERM.Net (Flooding & coastal Erosion Risk Management Network) Annual Assembly 2016: "Future-Thinking Flood Risk Management", held on 29th June 2016 in Newcastle. These slides from Nicola Osborne, who chaired this breakout, give an overview of general crowd sourcing considerations as well as sharing some specific learning from the EU FP7-funded COBWEB: Citizen Observatory Web project.
Management of research data specifically for Engineering and Physical Science. Delivered by Stuart Macdonald at the "Support for Enhancing Research Impact" meeting at the University of Edinburgh on 22 June 2016.
UiPath Test Automation using UiPath Test Suite series, part 5DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 5. In this session, we will cover CI/CD with devops.
Topics covered:
CI/CD with in UiPath
End-to-end overview of CI/CD pipeline with Azure devops
Speaker:
Lyndsey Byblow, Test Suite Sales Engineer @ UiPath, Inc.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...SOFTTECHHUB
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
zkStudyClub - Reef: Fast Succinct Non-Interactive Zero-Knowledge Regex ProofsAlex Pruden
This paper presents Reef, a system for generating publicly verifiable succinct non-interactive zero-knowledge proofs that a committed document matches or does not match a regular expression. We describe applications such as proving the strength of passwords, the provenance of email despite redactions, the validity of oblivious DNS queries, and the existence of mutations in DNA. Reef supports the Perl Compatible Regular Expression syntax, including wildcards, alternation, ranges, capture groups, Kleene star, negations, and lookarounds. Reef introduces a new type of automata, Skipping Alternating Finite Automata (SAFA), that skips irrelevant parts of a document when producing proofs without undermining soundness, and instantiates SAFA with a lookup argument. Our experimental evaluation confirms that Reef can generate proofs for documents with 32M characters; the proofs are small and cheap to verify (under a second).
Paper: https://eprint.iacr.org/2023/1886
Enchancing adoption of Open Source Libraries. A case study on Albumentations.AIVladimir Iglovikov, Ph.D.
Presented by Vladimir Iglovikov:
- https://www.linkedin.com/in/iglovikov/
- https://x.com/viglovikov
- https://www.instagram.com/ternaus/
This presentation delves into the journey of Albumentations.ai, a highly successful open-source library for data augmentation.
Created out of a necessity for superior performance in Kaggle competitions, Albumentations has grown to become a widely used tool among data scientists and machine learning practitioners.
This case study covers various aspects, including:
People: The contributors and community that have supported Albumentations.
Metrics: The success indicators such as downloads, daily active users, GitHub stars, and financial contributions.
Challenges: The hurdles in monetizing open-source projects and measuring user engagement.
Development Practices: Best practices for creating, maintaining, and scaling open-source libraries, including code hygiene, CI/CD, and fast iteration.
Community Building: Strategies for making adoption easy, iterating quickly, and fostering a vibrant, engaged community.
Marketing: Both online and offline marketing tactics, focusing on real, impactful interactions and collaborations.
Mental Health: Maintaining balance and not feeling pressured by user demands.
Key insights include the importance of automation, making the adoption process seamless, and leveraging offline interactions for marketing. The presentation also emphasizes the need for continuous small improvements and building a friendly, inclusive community that contributes to the project's growth.
Vladimir Iglovikov brings his extensive experience as a Kaggle Grandmaster, ex-Staff ML Engineer at Lyft, sharing valuable lessons and practical advice for anyone looking to enhance the adoption of their open-source projects.
Explore more about Albumentations and join the community at:
GitHub: https://github.com/albumentations-team/albumentations
Website: https://albumentations.ai/
LinkedIn: https://www.linkedin.com/company/100504475
Twitter: https://x.com/albumentations
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
Sudheer Mechineni, Head of Application Frameworks, Standard Chartered Bank
Discover how Standard Chartered Bank harnessed the power of Neo4j to transform complex data access challenges into a dynamic, scalable graph database solution. This keynote will cover their journey from initial adoption to deploying a fully automated, enterprise-grade causal cluster, highlighting key strategies for modelling organisational changes and ensuring robust disaster recovery. Learn how these innovations have not only enhanced Standard Chartered Bank’s data infrastructure but also positioned them as pioneers in the banking sector’s adoption of graph technology.
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...Neo4j
Leonard Jayamohan, Partner & Generative AI Lead, Deloitte
This keynote will reveal how Deloitte leverages Neo4j’s graph power for groundbreaking digital twin solutions, achieving a staggering 100x performance boost. Discover the essential role knowledge graphs play in successful generative AI implementations. Plus, get an exclusive look at an innovative Neo4j + Generative AI solution Deloitte is developing in-house.
Pushing the limits of ePRTC: 100ns holdover for 100 daysAdtran
At WSTS 2024, Alon Stern explored the topic of parametric holdover and explained how recent research findings can be implemented in real-world PNT networks to achieve 100 nanoseconds of accuracy for up to 100 days.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
In his public lecture, Christian Timmerer provides insights into the fascinating history of video streaming, starting from its humble beginnings before YouTube to the groundbreaking technologies that now dominate platforms like Netflix and ORF ON. Timmerer also presents provocative contributions of his own that have significantly influenced the industry. He concludes by looking at future challenges and invites the audience to join in a discussion.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
20 Comprehensive Checklist of Designing and Developing a WebsitePixlogix Infotech
Dive into the world of Website Designing and Developing with Pixlogix! Looking to create a stunning online presence? Look no further! Our comprehensive checklist covers everything you need to know to craft a website that stands out. From user-friendly design to seamless functionality, we've got you covered. Don't miss out on this invaluable resource! Check out our checklist now at Pixlogix and start your journey towards a captivating online presence today.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
2. About me
Background in environmental science
MSc in GIS, 2013
Now Spatial Data Analyst at GeoPlace (National Address Gazetteer)
3. About GeoPlace
Owned by Local Government Association / Ordnance Survey
Definitive national address & street gazetteers (datasets)
380 local authorities working together across GB – includes One Scotland Gazetteer (OSG) managed
by ThinkWhere
AddressBase products used by emergency services, government agencies, insurance companies
4. AddressBase features
Point data for every address in Great
Britain
Full postal address and many other
attributes
Unique Property Reference Number
(UPRN) for every property
Property lifecycle – includes historical & in
planning
Detailed property classification
Cross references to other OS products
e.g. MasterMap, ITN
5. Address data in Flood Management
Properties located in different flood zones
Allows emergency services target resources in flood event
6. Importance of address data...
Ofwat: Thames Water misreported the number of properties at
high risk of sewer flooding between 2005 and 2010
"This meant that more properties were recorded at higher risk of
sewer flooding than there was evidence to support“
While this fine relates to sewers it is crucial that accurate property
data is available for these types of analyses
7. Project overview
Hydrology example (mainly maps)
EDINA datasets (via. Digimap)
o Land Cover Map 2007
o Digital Terrain Model (DTM) – OS Profile
o OS Strategi
Other datasets
o Catchment shapefiles (Centre for Ecology & Hydrology / CEH)
o River flows data (HiFlows / Environment Agency)
8. Project aims
Aim of project was to calculate a regression-based equation for PROPWET (soil moisture value)
Currently engineers use constant value for catchment PROPWET (Flood Estimation Handbook)
Test & develop a regression-based equation using GIS, following initial Halcrow analysis
Particular relevance to natural flood management
9. Natural Flood Management (NFM)
NFM involves mitigating flooding using nature, currently difficult to analyse
Increasing flooding (climate change) and increasing costs
Regression-based PROPWET allows simulations of different ground conditions e.g. increased
vegetation
SEPA projects eg Eddleston Water, Scottish Borders
10. NFM example: Eddleston Water
69km2 waterway, part of the River Tweed Catchment
Straightened to improve land drainage leading to habitat loss and increased flood risk, 589
properties at risk of flooding (SEPA Flood Map)
Actions to date: Riparian planting, re-meandering, removal of manmade embankments
11. PROPWET (soil moisture)
Soil moisture important for flood estimates and the PROPortion of time
soils are WET (PROPWET) is an important catchment descriptor
PROPWET range 0-1, e.g. wet catchment 0.8, dry catchment 0.1
PROPWET value currently taken from Flood Estimation Handbook (FEH)
(Centre for Ecology & Hydrology, 1999) based on database query
FEH PROPWET is a single value for a catchment and based on when Soil
Moisture Deficit (SMD) ≤6mm during long term average (1961-90)
FEH PROPWET doesn’t consider land use or climate factors
13. Halcrow analysis
Initial regression-based equation proposed based on 43 catchments (Halcrow, 2012)
PROPWET = 0.5365Log10[SAAR – (PE x LAI4.70 x r 0.79 x 2.003E - 5)] - 0.998
14. Project workflow
Literature review
Obtain datasets
Generate river catchments
Zonal statistics, ArcGIS models to iterate – breakdown into different datasets required
Update regression equation
16. Land Cover Map 2007 (LCM2007)
LCM2007 is a parcel-based classification of 23 land cover classes based on the UK’s terrestrial Broad
Habitats
Classifying summer-winter composite images captured by satellite sensors with 20-30m pixels
LCM represents land cover type and not land use, although the two are often synonymous in practise
17. Land Cover Map 2007 (LCM2007)
Obtained vector & 1km raster (aggregated vector, dominant class per 1x1km pixel)
Vector dataset better metadata but long geo-processing times for country wide queries, vector
manipulated using ogr2ogr
Vector would have been fine in my desktop GIS if had a smaller study area
Raster clipped against river catchments after resampling to 100x100m to obtain better fit, each
catchment containing an average of 9 different land cover types
18. Catchment delineation
Possible to generate river catchments from terrain (DTM)
and ESRI’s Hydrology toolset
1. Digital Terrain Model (DTM)
2. Reclassify noData values
3. Fill ‘holes’ in DTM
4. Flow direction
5. Flow accumulation
6. Stream network definition
7. Catchment extraction
20. Geoprocessing
Used ArcGIS python model builder to iterate zonal statistics tool
Standard Average Annual Rainfall (SAAR), Air Temperature (Ta), Extra-terrestrial
Radiation (Re) per catchment
21. Geoprocessing -> Zonal Stats Maps
Standard Average Annual Rainfall
(SAAR)
Extra-terrestrial radiation (Re)Air temperature (Ta)
23. Leaf Area Index (LAI), Surface resistance (Rsc)
Leaf Area Index: amount vegetation cover
Surface resistance: friction, affects water flow
Assigned classifications using research paper (Hough & Jones, 1997), applied Zonal Statistics
by table tool
25. OS MasterMap Networks - Water Layer
New OS Water Layer (Beta) created with Environment Agency, SEPA, INSPIRE
Mainly derived from OSMM Topo but first time provides dedicated OS Water product with many new
useful attributes for flood modelling / mapping
Features: WatercourseLink (inc Flow Direction), HydroNode, WatercourseLinkSet,
WatercourseSeperatedCrossing, WatercourseInteraction