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Arsh Grewal

@akgrewal.bsky.social
100 followers 108 following 15 posts

Watershed Hydrologist | Assistant Professor @ University of Saskatchewan

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Matthias Sprenger @matthiasprenger.bsky.social · 24/03/2026
New paper in @pnas.org on root water & nutrient uptake by PhD student Langlang Li! doi.org/10.15485/299... I usually thought plants would get some water from deep soil layers if needed, but rely for nutrient uptake on topsoil. Our data from an alpine meadow in Colorado say otherwise: Deep-rooted 🧵
doi.org
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Arsh Grewal @akgrewal.bsky.social · 16/01/2026
I'm currently looking for an MSc student to characterize water ages and storage in cold catchments. Several potential projects available, and I will support students who want to develop their own! If interested, please reach out soon at akgrewal@usask.ca, as Sept 2026 app deadlines are approaching!
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Doerthe Tetzlaff @tetzlaffecohyd.bsky.social · 20/07/2025
New paper alert integrating #isotope-aided with N-modelling to quantify (dis)connections of different flow paths & related biogeochemical transformations with spatially-explicit estimates of water ages & Damköhler no. ‪@kinarnicholas.bsky.social‬ cld u highlight? THANKS! doi.org/10.1029/2025...
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Matthias Sprenger @matthiasprenger.bsky.social · 01/10/2025
Excited to share our new review in Reviews of Geophysics! We explored the latest advances in tracer-aided mixing models for studying water in the Critical Zone. We synthesize new tracer methods, models, & key insights. I think it'll be a valuable resource for the community doi.org/10.1029/2024...
doi.org
Recent Advances in Tracer‐Aided Mixing Modeling of Water in the Critical Zone
Tracer-aided mixing models are uniquely capable of identifying water flow paths and sources within the Critical Zone Recent advances offer novel tracers and models for deeper and more accurate in...
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Arsh Grewal @akgrewal.bsky.social · 25/09/2025
Hot off the press! New paper characterizing storage and release processes in two permafrost catchments with @theoryofciaran.bsky.social @seankcarey.bsky.social. We characterized these processes by closing the water balance, EMMA, and StorAge Selection Functions (1/n) doi.org/10.1029/2024...
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Jay Zarnetske @hydrodoctorj.bsky.social · 29/08/2025
Low-relief catchments are super complex and awesome, but they have not received as much attention as our complex and awesome high-relief catchments. Here we show in a low relief catchment just how complex things can be and how spatial sampling frameworks help us solve stream chemistry mysteries!
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KinarNicholas.bsky.social @kinarnicholas.bsky.social · 16/07/2025
Hydrology Paper of the Day @gregverkaik.bsky.social @micaheckert.bsky.social @peatofmind.bsky.social on how changes to drainage and spatial burn patterns affected biogeochemical cycles and vegetation cover in a peatland: depth of burn, carbon loss, and burn severity in context of a fuel load model.
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Arsh Grewal @akgrewal.bsky.social · 12/06/2025
New paper alert in HESS with Erin Nicholls and @seankcarey.bsky.social ! We used generalized additive models to assess the drivers of seasonality in stream chemistry across ten permafrost catchments in the Yukon Territory! (1/n) hess.copernicus.org/articles/29/...
hess.copernicus.org
The role of catchment characteristics, discharge, and active- layer thaw in seasonal stream chemistry across 10 permafrost catchments
Abstract. High-latitude catchments are rapidly warming, leading to altered precipitation regimes, widespread permafrost degradation, and shifts in stream chemistry across major arctic rivers. In headw...
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Jay Zarnetske @hydrodoctorj.bsky.social · 13/01/2025
Deadline to apply is one week!
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Jay Zarnetske @hydrodoctorj.bsky.social · 10/01/2025
Job Alert: Water Sciences Research Technician in @msunatsci.bsky.social working with two research groups. Full-time, career track. Great benefits. Deadline January 20, 2025. Complete position description and how to apply at careers.msu.edu/jobs/search. Search position number 1012771. Details below.
careers.msu.edu
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Doerthe Tetzlaff @tetzlaffecohyd.bsky.social · 28/11/2024
We'll advertise 3 positions soon in our group, Berlin Germany 1 permanent scientist/groupleader position in ecohydrological modelling; 2 postdocs in ecohydrological modelling in #wetlands. Females- pls apply. Email me when you are interested. Check our groups webpage www.igb-berlin.de/en/tetzlaff
igb-berlin.de
Landscape Ecohydrology | IGB
We aim to understand the ecohydrological functioning of catchments at different spatio-temporal scales, i.e. how and how long is water stored and released in landscapes. For this, we link landscapes a...
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