Dublin, Ireland
Joined April 2015
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Mapalljohn retweeted
The current temperatures in western and central Europe would have been virtually impossible 50 years ago, and unprecedented humidity levels make this heatwave especially dangerous newscientist.com/article/253…
Mapalljohn retweeted
Unsere Kinder und Enkel werden uns bitter verfluchen.
Die #Erderhitzung lässt sich auch durch Nullemissionen nicht zurückdrehen, nur die weitere Erhitzung stoppen.
Denn CO2 bleibt Jahrtausende in der Luft. Kipppunkte kommen näher.
Es wird kein Zurück geben.
Mapalljohn retweeted
@conwaywalsh “This was negligence,” Mayo TD says in defective concrete blocks debate mayonews.ie/news/politics/th…
Mapalljohn retweeted
Now online in early view:
"Towards improved accounting and mitigation of GHG emissions from ditches and canals."
Featuring, @mapalljohn, @wahajhb, @KostenSarian, @JackieRWebb, @fluitans, @AlanLaw_, @peatblogger, @AnttiJRissanen1, and many more.
iopscience.iop.org/article/1…
Pleased to say this multi-author paper has been accepted and coming soon to @IOPenvironment ERL. A lovely way to end the year. Merry Ditchmas all!
Delighted to see my colleague and friend @ProfPaulDunlop present his research on failing concrete in Leinster House.
His research was into the cause of the failure (internal sulfate attack) and into the mental health crisis it has caused.
highlandradio.com/2025/10/23…
Mapalljohn retweeted
🚀 Visualize Big Vector Data in Python—FAST!
Tired of slow and clunky tools for visualizing big vector dataset in Python? Discover this one-line Python trick using Leafmap + DuckDB to instantly render huge vector datasets—even gigabytes in size—right in your Jupyter notebook. In this video, you'll learn how to:
✅ Visualize millions of vector features with ease
✅ Use Leafmap + DuckDB to serve vector tiles dynamically
✅ Handle GeoParquet, GeoPackage, cloud-hosted data & more
✅ Create fully interactive maps—without crashing your browser!
📌 Watch the full video tutorial on YouTube: youtube.com/@giswqs/videos
👉 Notebook example: leafmap.org/maplibre/duckdb_…
#Visualization #Leafmap #BigData #DuckDB #GeoPython #GIS #OpenSource
Mapalljohn retweeted
S.R16 is @NSAI_Standards guidance on how EU standards for concrete aggregates are implemented by Irish concrete producers. Our research found that total sulfur levels from pyrrhotite set in these were breached & caused the defective concrete crisis.
highlandradio.com/2025/10/17…
Delighted to see our paper "Lines in the Landscape" published.
Thanks to @MikePeacock86 for organising a great workshop for ditch "experts" a few years ago in Liverpool. They discussions there led to this publication. It highlights the importance of ditches in our landscapes.
I'm thrilled to see this paper out, which I co-led with @DitchOntologist, and featuring input from loads of excellent co-authors. It's our interdisciplinary perspective on ditches; what they do, why they matter, and how we should look after them.
nature.com/articles/s43247-0…
Mapping the hidden black gold that is peat soil irishtimes.com/environment/c…
Mapalljohn retweeted
The proposed NOAA budget for 2026 contains the literal line:
Total, Climate Research: $0
commerce.gov/sites/default/f…
Mapalljohn retweeted
‘What disturbs you the most about the Glastonbury chants?’
‘They get more attention than the genocide of Gazans.’
Journalist @rachshabi, who is Jewish, weighs in on the fallout of Bob Vylan’s controversial performance.
Mapalljohn retweeted
Introduction to GIS Programming: Book Release and Code Examples Walkthrough
YouTube Video: youtu.be/6GwMoV4LOiU
In this video, I provide a step-by-step guide on running the code examples from the book using Binder, Colab, and Docker.
You can install all Python packages used in the book with a single command using pip, pixi, or conda.
pip install pygis
mamba install -c conda-forge pygis
Get the book:
PDF: leanpub.com/gispro
Full-color print edition: amazon.com/dp/B0FFW34LL3
#geospatial #opensource #python #mapping
Please sign this petition to let baby milk into Gaza.
secure.avaaz.org/campaign/en…
Delighted to have been involved in this research project. The team included the DCU Insight Centre, Botanical Environmental Consultants and Proveye.ie.
The ML method produces highly accurate habitat maps on grassland, peatlands, saltmarsh and dune systems.
This quoted post is unavailable.
Our EPA funded iHabiMap project final report is now available here:
epa.ie/publications/research…
Check out our latest paper looking at the carbon stock of global peatlands:
sciencedirect.com/science/ar…
