Tristan McKenzie

The Hidden Pipeline: How Human Pollution Seeps into the Sea with Dr. Tristan McKenzie | Oceanography

Interested in learning how submarine #groundwater discharge carries metals and pharmaceuticals to the coastal ocean? Check out my recent interview for the #Oceanography podcast series! shows.acast.com/67fd1ac310b3...

Going to #OSM26? Consider joining us for our session on Bridging the Fresh/Salty Divide!

@ljfalkenberg.bsky.social @h2osci.bsky.social @aslo.org

Radium isotopes quantify vertical mixing and reveal large benthic silicate fluxes in anoxic deep waters Benthic fluxes are important sources of nutrients and dissolved carbon to the water column. Yet, most approaches for quantifying benthic fluxes are labor intensive and cover relatively small areas of...

Pleased to share our new publication in @aslo.org L&O!

We used #radium-224 to quantify vertical mixing and benthic silicate fluxes across the #Baltic Sea.

Read more here (fully open access): doi.org/10.1002/lno....

With (and others):
@barefootlab.bsky.social @biogeoste.bsky.social

Nitrate‐Driven Eutrophication Supports High Nitrous Oxide Production and Emission in Coastal Lagoons Eutrophication stimulates nitrous oxide emissions in coastal lagoons Excess nitrate induces incomplete denitrification, leading to high nitrous oxide effluxes in sediments Nitrous oxide emission...

#Nitrogen paper out! 🌊🌊🌊

Global lagoons emit more N2O than we thought!

agupubs.onlinelibrary.wiley.com/doi/full/10....

The 2nd PhD paper by @hlscheung.bsky.social with a great team @barefootlab.bsky.social, etc. is out now in @jgrbiogeo.bsky.social @agu.org

New paper just published! We combined a water mass decomposition with biogeochemical tracers to untangle advective nutrient sources from the Gulf Stream and the Labrador Current versus local recycling along the Northwest Atlantic continental shelf. Have a look: 👇🌊🧪 #AGU

doi.org/10.1029/2024GB008409

Combined CH4, N2O, and CO2 Fluxes Reveal a Net Carbon Sink Across a Glacier‐Ocean Continuum A rapidly-retreating marine-terminating glacier exported CH4 to nearshore waters N2O was undersaturated near the glacier front The regional CO2 sink greatly outweighs CH4 and N2O emissions

My last PhD chapter is out!

Combined GHG fluxes reveal a net carbon sink across a glacier-ocean continuum — glacier exports CH₄ to coastal waters, but strong CO₂ uptake outweighs GHG emissions. 🌊❄️

Read more: agupubs.onlinelibrary.wiley.com/doi/full/10....

The main DEI page from @agu.org has been modified to take diversity out of the title. Glad to see it's not deleted entirely, but hey AGU, we're watching what you do and remembering the big game you once talked about supporting your diverse membership.

Today vs. January

Groundwater releases CO2 to diverse global coastal ecosystems Groundwater is a hidden, steady source of CO2 to coastal waters.

Awesome outcome of Apra Tomer’s MSc work summarising >10 years of field investigations at 40 coastal systems from 14 countries.

Groundwater discharge explained much of the CO2 tidal dynamics in nearshore waters.

www.science.org/doi/full/10....