Mathew Wells
@efdtoronto.bsky.social
Prof. University of Toronto Scarborough
🌊 ❄️ 💧 🐟
Great Lakes - Limnology - Fluid Dynamics
Sediment Transport - Ice - Fish
🌊 ❄️ 💧 🐟
Great Lakes - Limnology - Fluid Dynamics
Sediment Transport - Ice - Fish
Pinned
Mathew Wells
@efdtoronto.bsky.social
· Jun 19
New paper on plastic waste in Toronto Harbour.
"Wind driven transport of macroplastic debris in a large urban harbour measured by GPS-tracked drifters
Open Access link = www.sciencedirect.com/science/arti...
The video below shows the pathways that floating plastics were driven by the wind.
"Wind driven transport of macroplastic debris in a large urban harbour measured by GPS-tracked drifters
Open Access link = www.sciencedirect.com/science/arti...
The video below shows the pathways that floating plastics were driven by the wind.
Snow on the beach in Toronto
December 13, 2025 at 12:51 PM
Snow on the beach in Toronto
Reposted by Mathew Wells
Thread: Each week I run a simulation of Australia’s main electricity grid using rescaled generation data to show that it can get very close to 100% renewable electricity with 24GW/120GWh of storage (5 hrs at av demand)
Results:
Last week: 100% RE
Last 223 weeks: 98.6% RE (1/5)
Results:
Last week: 100% RE
Last 223 weeks: 98.6% RE (1/5)
December 3, 2025 at 10:30 PM
Thread: Each week I run a simulation of Australia’s main electricity grid using rescaled generation data to show that it can get very close to 100% renewable electricity with 24GW/120GWh of storage (5 hrs at av demand)
Results:
Last week: 100% RE
Last 223 weeks: 98.6% RE (1/5)
Results:
Last week: 100% RE
Last 223 weeks: 98.6% RE (1/5)
Reposted by Mathew Wells
A wild sculpture in Toronto made out of bike chains ⛓️ 🚲
December 3, 2025 at 1:48 AM
A wild sculpture in Toronto made out of bike chains ⛓️ 🚲
Reposted by Mathew Wells
The new delta of Don River is now visible on satellite maps!
And visible on satellite in Apple Maps & Here WeGo maps (the two I use).
December 1, 2025 at 12:01 PM
The new delta of Don River is now visible on satellite maps!
Reposted by Mathew Wells
Our new island is now showing up on Google Maps! (Ookwemin Minising island in Toronto)
November 30, 2025 at 1:09 PM
Our new island is now showing up on Google Maps! (Ookwemin Minising island in Toronto)
November 29, 2025 at 6:56 PM
Reposted by Mathew Wells
Hydrology Paper of the Day @efdtoronto.bsky.social on how GPS trackers quantify the movement of plastic debris in Toronto Harbour on Lake Ontario: calculation of plastic drift velocities and paths; relationships with wind patterns and water current variabilities; and a geography of water circulation
New paper on plastic waste in Toronto Harbour.
"Wind driven transport of macroplastic debris in a large urban harbour measured by GPS-tracked drifters
Open Access link = www.sciencedirect.com/science/arti...
The video below shows the pathways that floating plastics were driven by the wind.
"Wind driven transport of macroplastic debris in a large urban harbour measured by GPS-tracked drifters
Open Access link = www.sciencedirect.com/science/arti...
The video below shows the pathways that floating plastics were driven by the wind.
November 28, 2025 at 3:49 AM
Hydrology Paper of the Day @efdtoronto.bsky.social on how GPS trackers quantify the movement of plastic debris in Toronto Harbour on Lake Ontario: calculation of plastic drift velocities and paths; relationships with wind patterns and water current variabilities; and a geography of water circulation
Reposted by Mathew Wells
Join us for an exciting session on physical limnology at the ASLO-SIL Joint Meeting, May 12–16, 2026, in Montréal, Canada
www.aslo.org/aslo-sil-2026/
We are convening Special Session SS004: Physical Limnology—Dynamics, Drivers, and Change in Inland Waters.
🌊
www.aslo.org/aslo-sil-2026/
We are convening Special Session SS004: Physical Limnology—Dynamics, Drivers, and Change in Inland Waters.
🌊
November 14, 2025 at 1:36 PM
Join us for an exciting session on physical limnology at the ASLO-SIL Joint Meeting, May 12–16, 2026, in Montréal, Canada
www.aslo.org/aslo-sil-2026/
We are convening Special Session SS004: Physical Limnology—Dynamics, Drivers, and Change in Inland Waters.
🌊
www.aslo.org/aslo-sil-2026/
We are convening Special Session SS004: Physical Limnology—Dynamics, Drivers, and Change in Inland Waters.
🌊
The Halifax wave 🌊
November 9, 2025 at 7:19 PM
The Halifax wave 🌊
Science communication sign in Halifax with pictures of secchi disk
November 9, 2025 at 8:27 AM
Science communication sign in Halifax with pictures of secchi disk
Nibi =water
Street sign to waters of Toronto
Street sign to waters of Toronto
November 1, 2025 at 1:39 PM
Nibi =water
Street sign to waters of Toronto
Street sign to waters of Toronto
The horseshoe falls look like a massive wave cresting over and breaking with an incredible roar
October 19, 2025 at 8:25 PM
The horseshoe falls look like a massive wave cresting over and breaking with an incredible roar
New winter limnology paper out
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
“How Ice Composition Controls Radiatively Driven Convection Under Lake Ice”
🌊 ❄️
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
“How Ice Composition Controls Radiatively Driven Convection Under Lake Ice”
🌊 ❄️
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...
agupubs.onlinelibrary.wiley.com
October 8, 2025 at 12:06 PM
New winter limnology paper out
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
“How Ice Composition Controls Radiatively Driven Convection Under Lake Ice”
🌊 ❄️
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
“How Ice Composition Controls Radiatively Driven Convection Under Lake Ice”
🌊 ❄️
New paper on winter limnology of Lake Ontario now out- “Unique thermal mixing patterns in Lake Ontario revealed by novel year-round observations of thermal stratification”
Open access link at aslopubs.onlinelibrary.wiley.com/doi/full/10....
Open access link at aslopubs.onlinelibrary.wiley.com/doi/full/10....
October 6, 2025 at 4:14 PM
New paper on winter limnology of Lake Ontario now out- “Unique thermal mixing patterns in Lake Ontario revealed by novel year-round observations of thermal stratification”
Open access link at aslopubs.onlinelibrary.wiley.com/doi/full/10....
Open access link at aslopubs.onlinelibrary.wiley.com/doi/full/10....
It’s October and the water is still warm at beach in Toronto with swimming still possible!
October 5, 2025 at 3:58 PM
It’s October and the water is still warm at beach in Toronto with swimming still possible!
Hundreds of canoes ready to go
September 27, 2025 at 12:33 PM
Hundreds of canoes ready to go
Large Algoma freight ship in Toronto
September 27, 2025 at 12:09 PM
Large Algoma freight ship in Toronto
A salmon on Don River inToronto
September 22, 2025 at 10:10 PM
A salmon on Don River inToronto
New winter limnology paper
“Enhancing winter climate simulations of the Great Lakes:
insights from a new coupled lake–ice–atmosphere (CLIAv1)
system on the importance of integrating 3D hydrodynamics
with a regional climate model”
gmd.copernicus.org/articles/18/...
“Enhancing winter climate simulations of the Great Lakes:
insights from a new coupled lake–ice–atmosphere (CLIAv1)
system on the importance of integrating 3D hydrodynamics
with a regional climate model”
gmd.copernicus.org/articles/18/...
September 8, 2025 at 9:44 PM
New winter limnology paper
“Enhancing winter climate simulations of the Great Lakes:
insights from a new coupled lake–ice–atmosphere (CLIAv1)
system on the importance of integrating 3D hydrodynamics
with a regional climate model”
gmd.copernicus.org/articles/18/...
“Enhancing winter climate simulations of the Great Lakes:
insights from a new coupled lake–ice–atmosphere (CLIAv1)
system on the importance of integrating 3D hydrodynamics
with a regional climate model”
gmd.copernicus.org/articles/18/...
Often September is warm for swimming, but right now the city is reporting 5 °C at the Toronto beaches due to an upwelling of cold water!
www.openwaterdata.com/site/woodbin...
www.openwaterdata.com/site/woodbin...
September 1, 2025 at 9:35 AM
Often September is warm for swimming, but right now the city is reporting 5 °C at the Toronto beaches due to an upwelling of cold water!
www.openwaterdata.com/site/woodbin...
www.openwaterdata.com/site/woodbin...
Large ship near Toronto harbour
August 31, 2025 at 11:25 AM
Large ship near Toronto harbour
A whole lot of buoys at RAEOn getting ready for field deployments
August 28, 2025 at 9:21 PM
A whole lot of buoys at RAEOn getting ready for field deployments
New park at mouth of Don River open, now possible to kayak around Villers island.
July 19, 2025 at 11:59 AM
New park at mouth of Don River open, now possible to kayak around Villers island.