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Progressive Oxygenation of the North Atlantic Subpolar Gyre Open

Jannes Koelling, Andrea J. Fassbender, Alison R. Gray, Gregory C. Johnson, Jonathan D. Sharp , et al. · 2025

The subpolar North Atlantic (SPNA) is one of the few regions where the deep ocean is in direct contact with the atmosphere, making it a key location for interior ocean ventilation through gas exchange. We use a novel observation‐based data…

Comment on egusphere-2025-3729 Open

Jannes Koelling · 2025

Oxygen optodes on oceanographic moorings: recommendations for deployment and in situ calibration Open

Una Kim Miller, Kristen E. Fogaren, Dariia Atamanchuk, Clare Johnson, Jannes Koelling , et al. · 2024

Increasing interest in the deployment of optical oxygen sensors, or optodes, on oceanographic moorings reflects the value of dissolved oxygen (DO) measurements in studies of physical and biogeochemical processes. Optodes are well-suited fo…

Progressive oxygenation of the North Atlantic subpolar gyre Open

Jannes Koelling, Andrea J. Fassbender, Alison R. Gray, Gregory C. Johnson, Jonathan D. Sharp · 2024

Decadal variability of oxygen uptake, export, and storage in the Labrador Sea from observations and CMIP6 models Open

Jannes Koelling, Dariia Atamanchuk, Douglas W.R. Wallace, Johannes Karstensen · 2023

The uptake of dissolved oxygen from the atmosphere via air-sea gas exchange and its physical transport away from the region of uptake are crucial for supplying oxygen to the deep ocean. This process takes place in a few key regions that fe…

Ventilation and oxygen export in the Labrador Sea Open

Jannes Koelling, Dariia Atamanchuk, Johannes Karstensen, Patricia Handmann, Douglas W.R. Wallace · 2022

<p>The Labrador Sea is one of the few regions where ventilation can replenish oxygen to the deep ocean, owing to wintertime deep convection that occurs primarily in the center of the basin. While some recent studies have aided in qua…

Oxygen export to the deep ocean following Labrador Sea Water formation Open

Jannes Koelling, Dariia Atamanchuk, Johannes Karstensen, Patricia Handmann, Douglas W.R. Wallace · 2022

The Labrador Sea in the North Atlantic Ocean is one of the few regions globally where oxygen from the atmosphere can reach the deep ocean directly. This is the result of wintertime deep convection, which homogenizes the water column to a d…

Linking Oxygen and Carbon Uptake with the Meridional Overturning Circulation Using a Transport Mooring Array Open

Dariia Atamanchuk, Jaime B. Palter, Hilary I. Palevsky, Isabela Le Bras, Jannes Koelling , et al. · 2021

© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Atamanchuk, D., Palter, J., Palevsky, H., Le Bras, I., Koelling, J., & Nicholson, D. Li…

Reply on RC4 Open

Jannes Koelling · 2021

Abstract. The Labrador Sea in the North Atlantic Ocean is one of the few regions globally where oxygen from the atmosphere can reach the deep ocean directly. This is the result of wintertime deep convection, which homogeni…

Reply on RC3 Open

Jannes Koelling · 2021

Abstract. The Labrador Sea in the North Atlantic Ocean is one of the few regions globally where oxygen from the atmosphere can reach the deep ocean directly. This is the result of wintertime deep convection, which homogeni…

Reply on RC5 Open

Jannes Koelling · 2021

Abstract. The Labrador Sea in the North Atlantic Ocean is one of the few regions globally where oxygen from the atmosphere can reach the deep ocean directly. This is the result of wintertime deep convection, which homogeni…

Reply on RC2 Open

Jannes Koelling · 2021

Abstract. The Labrador Sea in the North Atlantic Ocean is one of the few regions globally where oxygen from the atmosphere can reach the deep ocean directly. This is the result of wintertime deep convection, which homogeni…

Review: `Oxygen export to the deep ocean following Labrador Sea Water formation&#8217; by Koelling et al. Open

Jannes Koelling, Dariia Atamanchuk, Johannes Karstensen, Patricia Handmann, Douglas W.R. Wallace · 2021

Abstract. The Labrador Sea in the North Atlantic Ocean is one of the few regions globally where oxygen from the atmosphere can reach the deep ocean directly. This is the result of wintertime deep convection, which homogeni…

Oxygen export to the deep ocean following Labrador Sea Water formation Open

Jannes Koelling, Dariia Atamanchuk, Johannes Karstensen, Patricia Handmann, Douglas W.R. Wallace · 2021

The Labrador Sea in the North Atlantic Ocean is one of the few regions globally where oxygen from the atmosphere can reach the deep ocean directly. This is the result of wintertime convection, which homogenizes the water column to a depth …

Export of newly oxygenated Labrador Sea Water at 53N Open

Jannes Koelling, Dariia Atamanchuk, Johannes Karstensen, Douglas W.R. Wallace · 2021

<div> <p>Most of the life-sustaining oxygen found in the global deep ocean is supplied in one of only a handful of key regions around the globe, such as the Labrador Sea in the subpolar North Atlantic. Here, oxygen is supplied …

Decadal Strengthening of Interior Flow of North Atlantic Deep Water Observed by GRACE Satellites Open

Jannes Koelling, Uwe Send, Matthias Lankhorst · 2020

The Gravity Recovery and Climate Experiment (GRACE) satellite mission provides information on changes to the Earth's gravity field, including ocean mass. Long‐term trends in GRACE data are often considered unreliable due to uncertainties i…

Variability in formation, properties, and transport of North Atlantic Deep Water Open

Jannes Koelling · 2020

North Atlantic Deep Water is found in much of the deep Atlantic Ocean, and its formationin the Labrador and Nordic Seas and subsequent southward export are a vital part of globalocean circulation and Earth’s climate system. The overarching…

Mooring and Seafloor Pressure End Point Measurements at the Southern Entrance of the Solomon Sea: Subseasonal to Interannual Flow Variability Open

Arachaporn Anutaliya, Uwe Send, Janet Sprintall, Julie L. McClean, Matthias Lankhorst , et al. · 2019

Variability of the flow across the Solomon Sea's southern entrance was examined using end point subsurface moorings and seafloor pressure sensors, reconstructed velocity profiles based on satellite‐derived surface velocity and bottom press…

Atlantic Meridional Overturning Circulation: Observed Transport and Variability Open

Eleanor Frajka‐Williams, Isabelle Ansorge, Johanna Baehr, Harry L. Bryden, María Paz Chidichimo , et al. · 2019

The Atlantic Meridional Overturning Circulation (AMOC) extends from the Southern Ocean to the northern North Atlantic, transporting heat northwards throughout the South and North Atlantic, and sinking carbon and nutrients into the deep oce…

Coherent Circulation Changes in the Deep North Atlantic From 16°N and 26°N Transport Arrays Open

Eleanor Frajka‐Williams, Matthias Lankhorst, Jannes Koelling, Uwe Send · 2018

The meridional overturning circulation (MOC) has been measured by boundary arrays in the Atlantic since 2000. Over the past decade of measurements, however, the reported tendencies in overturning circulation strength have differed between …

The Northwest Tropical Atlantic Station (NTAS) : NTAS-17 mooring turnaround cruise report cruise on board FV Pisces May 30 � June 21, 2018 Mayport, FL, USA � Morehead City, NC, USA Open

Sébastien Bigorre, Benjamin Pietro, Jason C. Smith, Matthias Lankhorst, Jannes Koelling · 2018

The Northwest Tropical Atlantic Station (NTAS) was established to address the need for \naccurate air-sea flux estimates and upper ocean measurements in a region with strong sea surface \ntemperature anomalies and the likelihood of signifi…

Can Empirical Algorithms Successfully Estimate Aragonite Saturation State in the Subpolar North Atlantic? Open

Daniela Turk, Michael Dowd, Siv K. Lauvset, Jannes Koelling, Fernando Alonso‐Pérez , et al. · 2017

The aragonite saturation state (ΩAr) in the subpolar North Atlantic was derived using new regional empirical algorithms. These multiple regression algorithms were developed using the bin-averaged GLODAPv2 data of commonly observed oceanogr…

Intense oceanic uptake of oxygen during 2014–2015 winter convection in the Labrador Sea Open

Jannes Koelling, Douglas W.R. Wallace, Uwe Send, Johannes Karstensen · 2017

Measurements of near‐surface oxygen (O 2 ) concentrations and mixed layer depth from the K1 mooring in the central Labrador Sea are used to calculate the change in column‐integrated (0–1700 m) O 2 content over the deep convection winter 20…

Coherent changes of the circulation in the deep North Atlantic from moored transport arrays Open

Eleanor Frajka‐Williams, Matthias Lankhorst, Jannes Koelling, Uwe Send · 2016

In situ boundary arrays have been installed in the North Atlantic to measure the large-scale ocean circulation. Here, we use measurements at the western edge of the North Atlantic at $16^\circ$N and $26^\circ$N to investigate low-frequency…

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