Rocio Luz Fernandez

Extreme weather is transforming the world’s rivers. We need new ways to protect them Rivers support billions of people but are among the least protected parts of nature. A major review shows what needs to be done as climate change accelerates.

A piece we wrote for The Conversation that associated with our recent paper "Extreme events and river biodiversity
under climate change" in Nature Reviews Biodiversity @jdtonkin.bsky.social @tdatry.bsky.social and others

Read-only link: rdcu.be/e4Dkv

doi.org/10.64628/AA....

Water Resources Analyst Position at Colorado State University. Apply by 16 March. See also: csdms.colorado.edu/wiki/Jobs

Wind and -20°C created some wild ice on the trees by beach in #Toronto

Closes soon!! 🧪⚒️

Grateful to the Loughborough University Policy Unit for their support and their highlighting of my policy brief: “Living Well with Water: Building Flood Resilience Through Participation, Education,…... Grateful to the Loughborough University Policy Unit for their support and their highlighting of my policy brief: “Living Well with Water: Building Flood Resilience Through Participation, Education, ...

Read my new policy brief of Living Well with Water: Building Flood Resilience Through Participation, Education & Inclusion 👇

www.linkedin.com/posts/katie-...

Hi! Could I be added as well, please?

How Ice Composition Controls Radiatively Driven Convection Under Lake Ice Numerical simulations show how ice composition influences heating and convection of the under-ice water column in lakes The diffusive boundary and stratified layers near the ice–water interface a...

New winter limnology paper out

agupubs.onlinelibrary.wiley.com/doi/10.1029/...

“How Ice Composition Controls Radiatively Driven Convection Under Lake Ice”

🌊 ❄️

Micromelt sampling of the glacier algal nutrient environment Abstract. Zygnematophycean “glacier algae” form extensive blooms on ablating glacier surfaces despite the ultra-oligotrophic conditions apparent. Previous

New paper from PhD student Maddy Lewis on glacier algal nutrient environment. Well done Maddy!!. academic.oup.com/femsec/advan...

Line graph time series of monthly mean surface temperature anomalies for the Northern Hemisphere region only. Every month is shown from 1940 to July 2025. There is a long-term warming trend in all months of the year.

Line graph time series of monthly mean surface temperature anomalies for the Southern Hemisphere region only. Every month is shown from 1940 to July 2025. There is a long-term warming trend in all months of the year.

Line graph time series of monthly mean surface temperature anomalies for the Arctic region only. Every month is shown from 1940 to July 2025. There is a long-term warming trend in all months of the year and a strong seasonality in terms of the magnitude of the anomalies.

Line graph time series of monthly mean surface temperature anomalies for the Antarctic region only. Every month is shown from 1940 to July 2025. There is a long-term warming trend in all months of the year, but less obvious than the other regions.

Comparing the different seasonality and trends in the magnitude of monthly temperature anomalies since 1940 for the Northern Hemisphere, Southern Hemisphere, Antarctic and Arctic. There are significant differences in the rate of long-term warming (blue to red lines).

Data: doi.org/10.24381/cds...

Poster for 90 minute workshop on HOW TO DESIGN BETTER EXPERIMENTS, by Mridul Thomas & Ravi Ranjan. Details: September 23rd 16:00 CEST ; 14:00 UTC Description: Experimental designs can make or break an experiment. A good experiment has a clear goal and efficiently uses experimental resources to achieve that goal. In this workshop, we will review what experiments are for, basic and advanced principles of designing experiments, and how to use simulations to evaluate designs before actually doing the experiment. We’ll do a moderate amount of coding in R and so experience with this would be helpful but is not required. We intend to have small-group discussions to help participants develop their own experiments, and encourage participants to think of a specific question they would like to answer with an experiment.

@raviranjan.bsky.social & I are teaching a free online workshop with on experimental design for environmental scientists on the 23rd.

We'll focus on using simulations to evaluate how well different experimental designs help achieve your goals.

Please sign up & share! forms.gle/MZTxeQs4UpMr...

Social media image showing a silhouette of a person standing by a lake at dusk or dawn against a cloudy sky. Large white text reads "LET'S REVIVE OUR LAKES" with "Join #GenerationRestoration" below. Decorative elements include a yellow outlined bird, red butterflies, and green palm trees. The UN Decade on Ecosystem Restoration 2021-2030 logo appears at the bottom, featuring colored curved lines. Blue fish illustrations swim in the water below. The image combines a natural lake scene with graphic design elements against a dark, atmospheric background.

Today is the first #WorldLakeDay! 🏞️ Lakes are vital #ForNature, climate resilience & freshwater supply, but are degrading rapidly.🌍🧪

Urbanization is a major cause of lake losses in many countries.

.— IPBES #GlobalAssessment

Explore restoration solutions with @unep.org & @fao.org bit.ly/469N2Ii

Lush with Life | Underwater Oases of the Mar Del Plata Canyon YouTube video by Schmidt Ocean

An international team of scientists is documenting remarkable biodiversity and exploring how powerful ocean currents support the #MarDelPlataCanyon ecosystem. Learn more via our latest #TaludContinental_IV expedition in Argentina! 🇦🇷
youtu.be/Ez2GJNz1vSo?...

PhD Scholarship Available on the development of eco-hydrologic and hydro-geomorphic models in coastal systems, at Deakin University / IITM (Australia-India joint project), Australia. Apply by 10 September. See also: csdms.colorado.edu/wiki/Jobs

Modeling the Influence of Grounded Landfast Ice on Nearshore Sediment Transport XBeach was used to quantify sediment transport due to grounded landfast ice Conditions were identified where sediment transport was both amplified and reduced by ice Scour of the nearshore persi...

New paper by Chelsea Volpano where she characterizes the role of landfast ice on coastal sediment transport. interesting nonmonotonic response in sediment transport with the termination depth, explaining much of the erosive vs protective debate of ice agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Ad for 2 graduate student positions and and 1 lab and field assistant position at UCSB. More info go to audreythellman.weebly.com

Hello freshwater friends! I’m starting a lab(!!) and recruiting 2 students to start Fall 2026 and a lab/field assistant to start this Fall 2025! Research topic is broad: rivers 🛶, ice/snow ❄️, nutrients 🍂, algae 🌱see below for more info

Please pass this along to any interested folks :)

Schematic diagram showing the influence of sea-level change on fluvial transverse and axial drainage systems in the Taiwan Strait. (A) Palaeo–Choushui River sediments were transversely transported from wedge-top areas to the emergent forebulge during the Last Glacial Maximum. Along the east side of the forebulge, some fluvial sediments were transported southwards and axially via the linear sediment conduit of the connected river valley–submarine canyon to the South China Sea. (B) Beginning around 9.5 ka BP to the present sea-level highstand, the narrow seaway east of the forebulge became a foredeep filled with shallow marine sediments. The Choushui River empties sediments from wedge-top areas into the Taiwan Strait, where they are redistributed and transported mainly by the north-flowing Taiwan Warm Current, resulting in an axial sediment dispersal pattern.

Let's say you have a big river, and active tectonics, and strong ocean currents, like, for example, around Taiwan, there are going to be a lot of modes of sediment dispersal, and they will alternate over time. 🧪⚒️

Link: onlinelibrary.wiley.com/doi/10.1002/...

Reconstructing #IceMargin Retreat Using #Delta #Morphostratigraphy
-
alturl.com/2xt7k
-
#GIS #spatial #mapping #ice #paleogeography #icesheet #glacier #glacial #retreat #geology #landform #geomorphology #LiDAR #remotesensing #fluvial #water #hydrology #erosion #sediment #deposition #quebec #canada

Loved Deumheller! Wish I could be back!

A flyer for an AGU 2025 session titled, "A082: New Perspectives on the Exchange of Reduced Nitrogen Between the Atmosphere, Land, and Water from Remote Sensing, in situ Measurements, and Modeling Approaches" The description reads, "Reduced nitrogen from source to impact! From wildfires to agricultural inputs, diverse sources of reactive nitrogen drive significant ecological changes including eutrophication, harmful algal blooms, and aquatic food web disruption across multiple environmental systems. Submit an abstract to our interdisciplinary session exploring atmospheric, terrestrial, and aquatic perspectives. We welcome contributions using remote sensing, field measurements, and modeling approaches that span complexity and spatiotemporal scales. Sections: Atmospheric Sciences, Biogeosciences" The conveners are Dr. Matthew Davis, Dr. Kimberley Corwin, and Dr. Lauren Magliozzi of Colorado State University. There is a QR code for the submission link, and the deadline is listed as 30 July 2025. The text is black on white boxes with blue accents, and the background features a blue sky with large, white clouds.

New @agu.org session! Reduced nitrogen from source to impact: an interdisciplinary session on reduced nitrogen's complex environmental role. Invited speakers include USGS limnologist Dr. Michael Meyer @mishafredmeyer.bsky.social & Georgia Tech atmospheric scientist Da Pan #AGU2025 🧪🔥⚒️

Great summary of our recent paper on sea level rise during a past warm period and what it means for our future. Thanks, @climateages.bsky.social , for featuring our work.

Il satellite Biomass dell'ESA, lanciato a fine aprile, ha iniziato a inviare le prime immagini

Happy Monday! 🥳
Thrilled to share our new paper in Children’s Geographies:
“Place-based & intergenerational storytelling for youth climate action: Moving beyond participation and towards momentum” 🌍📚

Read it here: www.tandfonline.com/eprint/IHFXJ...

River widths of each stream order exhibit predictable log-normal distributions.

🚨New paper🚨 shows a remarkably clean relationship between river width and stream order across the US

𝑇ℎ𝑒 𝑊𝑖𝑑𝑡ℎ𝑠 𝑜𝑓 𝑅𝑖𝑣𝑒𝑟𝑠 𝑎𝑛𝑑 𝑆𝑡𝑟𝑒𝑎𝑚𝑠 𝐴𝑐𝑟𝑜𝑠𝑠 𝑆𝑝𝑎𝑡𝑖𝑎𝑙 𝑆𝑐𝑎𝑙𝑒𝑠... 🔗 doi.org/10.1029/2025...

#hydrology #geomorphology #rivers #RemoteSensing

Digital elevation model of the Grand River, South Dakota, USA. River floodplain in blue (high) to white (low), the rest of the landscape in orange (high) to green (low). The river meanders, the landscape on both sides of the floodplain is eroded with finger-like gullies.

A nice river, somewhere, meandering through a bit of glacial deposits and cutting into Upper Cretaceous shale and sandstone.
High-resolution prints are for sale on request (special edition!).

Wow! Since 2005, Paris has slashed air pollution by 55% - a staggering win for public health and climate. How? Bold green urbanism. The city curbed car traffic, expanded bike lanes and boosted public transport. When people and planet are prioritised, the air gets cleaner and lives get better.

It’s sad to see the EEI say goodby to you, Tom.

Biodiversity change under human depopulation in Japan - Nature Sustainability Human population growth over the past few decades has had detrimental impacts on biodiversity; however, several countries, such as Japan, are experiencing below-replacement human fertility leading to ...

Biodiversity declines when people leave the land (in Japan) @natsustain.nature.com
🌏 doi.org/10.1038/s418...

A satellite image showing the junction between two fairly large rivers. They are surrounded by a mixture of farmland and floodplain trees and shrubs. Both rivers have colors indicating significant sediment load, but one is greenish gray and the other is distinctly browner colored.

Junction of the Missouri and Yellowstone Rivers just east of Montana/North Dakota state line with distinctly different colors from suspended sediment (Missouri flows from upper left to upper right). Sentinel 2 image, June 9, 2025.

Rivers are exhaling ancient carbon — and climate math just changed Ancient carbon thought to be safely stored underground for millennia is unexpectedly resurfacing literally. A sweeping international study has found that over half of the carbon gases released by rive...

Scientists shocked to discover that massive amount of ancient carbon thought to be safely stored underground for millennia is being released right now further accelerating global warming much faster than predicted in climate models

www.sciencedaily.com/releases/202...