The 8th International Symposium on Gas Transfer at Water Surfaces

Tuesday 17 May 2022 - Friday 20 May 2022

Location: Plymouth Marine Laboratory (and online)

This event has now ended and is archived

The Gas Transfer at Water Surfaces (GTWS) symposium took place in May 2022. This topic is globally-important as understanding gas transfer is crucial for quantifying CO₂ uptake by the ocean as well as the emission of climate-relevant gases such as DMS and other volatile organic compounds. The event was well-attended with nearly 100 participants (approx. 75% in-person, 25% online). Using PML’s new technology for hybrid events, and with the help of an external company (Mindfully Wired), we switched effortlessly between the room and online participants during the Q&As.

Traditionally, there has been a publication containing GTWS articles. This time, much of the presented work had already been published during the pandemic, so an updated version of the attached Book of Abstracts has been published instead, providing a link to the recorded talks / slides (see below).

Book of Abstracts

Click here to access the final Book of Abstracts publication

Presentations

Presentations from the event are listed by session below and in the order from the programme. Each file is in PDF format except where stated.

Global synthesis of air-sea CO₂ transfer velocity estimates from ship-based eddy covariance
measurements
Mingxi Yang

Simulation of high-intensity isotropic turbulence driven gas transfer
Herlina Herlina

Wind and fetch dependent gas transfer velocity in an Arctic sea-ice lead determined from eddy
covariance CO₂ flux measurements
John Prytherch

Sufficiently Realistic Simulation of Oceanic Conditions for Air-Sea Gas Exchange at the Re-Engineered
Heidelberg Aeolotron
Kerstin Krall

Bubble size distributions measured in high wind conditions, and their potential contribution to
oxygen update during winter storms
Helen Czerski

New, substantially larger, estimates of global air-sea CO₂ flux from surface data
Andrew Watson

Air-sea gas exchange in a seagrass ecosystem
Ryo Dobashi

Greenhouse gases in the urban Clyde estuary: Physical estuarine processes and nutrient loading impact greenhouse gas generation
Alison Brown

Concurrent, open ocean eddy covariance flux measurements of dimethylsulfide and carbon dioxide: What have they taught us about gas transfer and what should we do next?
(Video recording on YouTube)
Christa Marandino

Energy dissipation-based estimates of whitecap coverage and air entrainment rates in whitecaps
(Video recording on YouTube)
Adrian Callaghan

The Thermal Signature of the Residual Foam in Breaking Waves
(Video recording on YouTube)
Chris Chickadel

pCO2 gradient in the near surface ocean
(Video recording on YouTube)
Chris Chickadel

Relationship between wind speed and gas exchange in the coastal Baltic Sea
(Video recording on YouTube)
Mariana Ribas-Ribas

Greenhouse gases (CO₂ , CH₄ and N₂O) emissions from a tropical micro-tidal estuary (Cochin, India)
Sudheesh Valliyodan

A Field Experiment to Determine the Impact of Nearshore Processes on Air-Sea Mass, Momentum, and Heat Fluxes
(Video recording on YouTube)
Henry Potter

Turbulence-based air-sea CO₂ exchange in the Jade Bay
Leonie Esters

Laboratory investigation of significant gas transfer enhancement via capillary-gravity bow waves
Katherine Adler

Bubble break-up and the formation of sub-Hinze scale bubbles in turbulence
Daniel Ruth

Using land-based stations for air-sea interaction studies, issues with land influence and nonstationarity
Anna Rutgersson

A thermographic approach to measure the wind shear stress at the water surface
Philipp Voigt

Airborne observations over the North Atlantic Ocean reveal urea is a missing component of atmospheric reduced nitrogen
Emily Matthews

Seasonal and Diurnal Variations in Organic Matter Composition Influence the Biogenic Surfactant Pool in the Coastal Baltic Sea
Theresa Barthelmeß

Greenhouse gas fluxes over a boreal river measured with eddy covariance
Aki Vähä

Measurements of surface-cooling induced gas-transfer using fluorescence-lifetime imaging (FLI) technique
Erni Murniati

The role of chemistry in air-sea fluxes
Lucy Carpenter

Bubble size distributions in spilling breakers with different phase shifts
Konstantinos Chasapis

Influence of carbonate chemistry on mangrove-dominated estuarine system and carbon dioxide fluxes in Indian Sundarban
(Video recording on YouTube)
Avanti Acharya

Laboratory measurements of size-dependent spray distributions above both fresh and seawater
(Video recording on YouTube)
Brian Haus

Global estimates of air-sea CO₂ fluxes: Contributions of Wallace Broecker and Taro Takahashi
Rik Wanninkhof

Challenges of addressing the climate emergency for the GTWS community
Jamie Shutler

Understanding and modeling bubble mediated gas transfer by breaking waves
Luc Deike

Quantifying the decadal and global scale impact of tropical cyclones on the ocean carbon sink using remote sensing, in situ and models
Richard Sims

Constraining the role of the surface micro layer in tropical riverine headwaters of Amazonia
Sevda Norouzi Alibabalou

Air-sea scalar transfer – effects of wind and waves on equivalent roughness length
Tetsu Hara

The effects of surfactants on air-water gas transfer
Jan Wissink

Testing and application of a diffusion-based method for sampling DMS in the Sea Surface Microlayer
Alexia Saint-Macary

Near-surface stratification biases the Arctic and global air-sea CO₂ flux estimates
Yuanxu Dong

Near-surface Turbulence in the Upper Mixed Layer: Implications for Gas Fluxes
(Video recording on YouTube)
Sally MacIntrye

Observations of mean and wave orbital flows in the upper centimeters of the ocean surface layer
(Video recording on YouTube)
Nathan Laxague

IRISS, an IR Radiometer System for Measurement of Skin Temperature from USVs and Buoys
(Video recording on YouTube)
Andy Jessup

Working Towards Improved Gas Transfer Prediction by Understanding the Impact of Gustiness on Momentum Fluxes
(Video recording on YouTube)
Meng Lu

Modeling Air-Sea Gas Transfer Under Tropical Cyclone Conditions
Alex Soloviev

On the Limitations of Current Field Measuring Techniques and Measurements for Air-Sea Gas Exchange
(Video recording on YouTube) | PDF avaliable here
Bernd Jähne

CLAW: Dead or Alive?
Peter Liss

The peculiar characteristics of air-water gas transfer across a broken surface
David Woolf

Sea ice concentration impacts dissolved organic gases in the Canadian Arctic
Charel Wohl

Air-sea gas exchange fluxes and steady state saturation anomalies at very high wind speeds, as revealed by noble gases
Rachel Stanley

Using Ship-Deployed High-Endurance Unmanned Aerial Vehicles for the Study of Ocean Surface and Atmospheric Boundary Layer Processes
Chris Zappa

On the parameterisation of air-sea gas transfer of CO₂ via wave breaking energy dissipation rate
Andrew Smith

Statistical distributions of whitecap variables using a novel remote sensing technique to detect and track individual whitecaps in digital sea surface images
Joe Peach

Evidence that differences between the dominant drivers of surface air-sea exchange and those of
surface cross-shelf transport are controlling continental shelf-sea carbon sinks
Jamie Shutler

Controls of air-sea CO₂ exchange under high and low wind-speed conditions
Lucía Gutiérrez-Loza

Relationships between CO₂ gas transfer velocity, radar backscatter and wave properties
Tom Bell

Local organising committee

Phil Nightingale (Chair) – Plymouth Marine Laboratory
Tom Bell (Co-Chair) – Plymouth Marine Laboratory
Jamie Shutler – University of Exeter
Andy Watson – University of Exeter
Frances Hopkins – Plymouth Marine Laboratory

Scientific Committee

Tom Bell (Chair) – Plymouth Marine Laboratory (UK)
Phil Nightingale (Co-Chair) – Plymouth Marine Laboratory (UK)
Jacqueline Boutin – CNRS UPMC (France)
Craig Donlon – European Space Agency
Tzung-May Fu – School of Environment, Southern University of Science and Technology (China)
Herlina Herlina – Karlsruhe Institute of Technology (Germany)
David Ho – University of Hawaii (USA)
Frances Hopkins – Plymouth Marine Laboratory (UK)
Andy Jessup – University of Washington (USA)
Christa Marindino – GEOMAR (Germany)
Lisa Miller – Institute of Ocean Sciences (Canada)
Wade McGillis – Columbia University (USA)
Anna Rutgersson – Uppsala University (Sweden)
Jamie Shutler – University of Exeter (UK)
Rachel Stanley – Wellesley College (USA)
Hiroshi Tanimoto – NIES (Japan)
Rik Wanninkhof – NOAA AOML (USA)
Brian Ward – National University of Ireland
Ming-Xi Yang – Plymouth Marine Laboratory (UK)
Chris Zappa – Columbia University (USA)