@davidwalkerh2o.bsky.social
Freelance consultant working on drought, hydrogeology, socio-hydrology, and citizen science 🚰🏜️🏔️🌍. Alternatively, you are most likely to find me running over mountains or at the bottom of the sea 🏃♂️🤿🦈.
📣New paper!
Led by Annelieke Duker, research comparing the #sand_mining situation in #sand_rivers in Botswana, Kenya & Ethiopia reveals common conflicts & challenges like impacts on dryland water availability & how to estimate sustainable sand yield. ⛏️💧🧑🌾
See: www.sciencedirect.com/science/arti...
📣New paper!
Led by Louise Cavalcante, research from Ceará, Brazil, shows how local development policies can interrupt the cascading impacts of #drought - not just by supplying more water, but by supporting livelihoods and resilience. 💧🧑🌾🌽
See: nhess.copernicus.org/articles/25/...
Back to real hydrogeology in the Caucasus⛲. Alongside the usual drilling hazards, there are A LOT of snakes (saw 3 on Tuesday, all venomous🐍), A LOT of minefields💣, mid 30s temperatures🥵, and the ghosts of a variety of peoples who inhabited this area prior to recent decades☠️.
12.06.2025 10:45 — 👍 0 🔁 0 💬 0 📌 0
📣New publication!
"Baseline Assessment of Drought Impact Monitoring" by Integrated Drought Management Programme. It was really interesting to work on and presents a range of worldwide initiatives, often with a non-drought focus, that provide valuable drought impact data. See: shorturl.at/HZcK6
In least-developed countries & low to middle-income countries, drought is still the single greatest cause of agricultural production loss.
What’s more, it impacts agriculture almost exclusively 👉 bit.ly/3Bny3c5
#UNited4Land #EarthDay
Back to hydrogeological consulting for a while. I was flown straight to the Caucasus with the task of sorting this out:
⛏️💰☠️
📣New paper!
Led by Heidi Kreibich, "Panta Rhei: a decade of progress in research on change in hydrology and society" synthesises the findings of the IAHS scientific decade “Panta Rhei – Everything Flows: Change in hydrology and society” (2013–2022). See: rb.gy/9r63l3
📣New paper!
A pilot study on the impacts of #sand_mining, involving many site visits & interviews with varied stakeholders, showed how both legal & illegal operations cause a range of issues, but not always. Governance & site selection must be improved. See: tinyurl.com/p94nszsa ⏳🏗️🚰🧑🌾🌽🦜
How do you grow food on arid São Vicente, Cabo Verde? This fog trap on the island's highest mountain yields 3000 litres of water per week; enough for a small plot and to provide tea, coffee and excellent ponche to tourists. Could this be scaled up? #water_scarcity #NbS
06.03.2025 16:41 — 👍 2 🔁 0 💬 0 📌 0
There was a time in Europe when the provision of fresh water was so valued, that monumental architecture was devoted to it. Here is the Bydgoszcz Water Tower, completed in 1900.
17.02.2025 16:08 — 👍 0 🔁 0 💬 0 📌 0
Can we use paleo for detection and attribution of drought without a climate model? Yes!
New work led by @drkatemarvel.bsky.social, with me and some old guy.
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
1/2. 📣POSTDOCTORAL RESEARCH FELLOW WANTED: The African Synthesis Centre for #ClimateChange, Environment and Development is looking for a Postdoctoral Research Fellow for “Unpacking Non-economic #LossAndDamage in Africa” 🔥⛈️ .
⏰ Deadline: 23 February
✏️Apply: ascendclimate.org/wp-content/u...
Just back from Saudi Arabia. Always on the lookout for historic and transferable climate adaptation methods, here is Al-Balad, Jeddah’s old town. The intricate wooden lattice windows weren’t just for privacy, they’re a time-tested cooling system, channeling breezes while keeping out the fierce sun.
12.02.2025 11:21 — 👍 4 🔁 0 💬 0 📌 0
