The 3rd CATCH Open Science Workshop

9 May 2022, 04:45 → 13 May 2022, 20:00 Europe/Zurich

Zoom and Gathertown

Jennie Thomas (IGE/CNRS), Markus Frey (British Antarctic Survey), Thorsten Bartels-Rausch (PSI - Paul Scherrer Institut)

CATCH proudly announces the next Open Science Workshop 9-13 May 2022 to discuss atmospheric chemistry research, with a focus on natural processes specific to cold regions of the Earth.  

The workshop hosted invited talks recordings of which you may still download from this webpage. Follow the session links below for a detailed list of available talks. You also find links to the Question & Answer discussions that took place along with the talks.

• Day 1 - 9 May: Linking biogeochemistry to aerosol-cloud interactions in the Southern Ocean and Antarctic (Marc Mallet & Ruhi Humphries & Sonya Fiddes):
  Present PICCAASO key science questions and plans, engage community members that can contribute. Download Discussion Notes

• Day 2 - 10 May: Ocean-ice-snow-atmosphere fluxes (Markus Frey & Jen Murphy): Presentation of the current approaches to quantify trace gas and aerosol fluxes above ocean, ice and snow surfaces. Discussion of the strategies to overcome limitations/uncertainties in measurement strategies and how to use this flux information within models. Download Discussion Notes

• Day 3 - 11 May: Polar halogen chemistry and interlinked processes (Jennie Thomas & Thorsten Bartels-Rauch): What is the role of snow, including snow on sea ice, compared to sea salt aerosols in activating and sustaining halogen chemistry? What are the main outstanding questions regarding how halogens influence atmospheric aerosols and oxidation capacity? Download Discussion Notes

• Day 4 - 12 May: Cryospheric links to aerosol-cloud interactions (Paul Zieger & Jessie Creamean): What are the sources and abundances of cloud forming aerosols in the polar regions and how do these vary over the seasons? What processes control aerosol emission and transport? What are the current modeling deficiencies? Download Discussion Notes

• Day 5 - 13 May: Coupling of ocean-ice-atmosphere processes: from sea-Ice biogeochemistry to aerosols and Clouds, SCOR WG #163: CIce2Clouds (Megan Willis & Nadja Steiner): Present educational sessions on cross-cutting themes that link the sea-ice/ocean/atmosphere system. Present the plans for CIce2Clouds, and first steps from sub-working groups, to the community and engage community participation. Download Discussion Notes

Catch2022Session1.pdf

Catch2022Session2.pdf

Catch2022Session3.pdf

Catch2022Session4.pdf

Catch2022Session5.pdf

Monday 9 May

05:00 → 08:00 Linking biogeochemistry to aerosol-cloud interactions in the Southern Ocean and Antarctic: Plenary session: PICCAASO’s grand challenges

Present PICCAASO key science questions and plans, engage community members that can contribute

Catch2022Session1.pdf

05:00 Poster Session

Meet in Gather.Town

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

GatherTown

06:00 Introductions and welcome

06:10 Keynote: A circum-Antarctic perspective on aerosol properties and processes: What we know and what we wish we knew

Speaker: Julia Schmale (PSI)

schmaleVideo.mov

06:40 Keynote: New findings from Southern Ocean Cloud-Aerosol-Precipitation-Radiation Field Campaigns in 2017-18 and Needs for Future Observations

Speaker: Greg McFarquhar (The University of Oklahoma)

McFarquharVideo.mp4

07:10 Lightning talks for poster introductions and general discussion

05:00 → 06:00 Posters and social time in gather.town

Join Poster session in GatherTown here

05:00 poster session & social time & informal discussions

Bring your own drink and snack. View posters, meet CATCH scientists, and discuss science (and other topics) in gatherTown

11:00 → 14:00 Linking biogeochemistry to aerosol-cloud interactions in the Southern Ocean and Antarctic: Round the world session - Campaigns and logistics

Present PICCAASO key science questions and plans, engage community members that can contribute

Catch2022Session1.pdf

11:00 Poster Session and Informal Discussion

Please attend the poster session and informal discussion going on now in GatherTown:

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

GatherTown

12:00 Introductions and overview of discussion from previous sessions

S1_IntroAndSummary_1200CEST.mp4

12:10 DMS and MeSH fluxes during Sea2Cloud

Speaker: Manon Rocco

S1_Rocco_1210CEST.mp4

12:25 New particle formation around the Antarctic Peninsula

Speaker: James Brean

S1_Brean_1225CEST.mp4

12:40 Evaluation of ocean dimethylsulfide concentration and emission in CMIP6 models

Speaker: Martine Michou

S1_Seferian_Michou_1240CEST.mp4

12:55 Updates to sulfur chemistry in the UM

Speaker: Laura Revell

S1_Revell_1255CEST.mov

13:10 Discussion

11:00 → 12:00 Posters and social time in gather.town

Join Poster session in GatherTown here

11:00 poster session & social time & informal discussions

Bring your own drink and snack. View posters, meet CATCH scientists, and discuss science (and other topics) in gatherTown

Join Poster Session in Gather Town

20:00 → 23:00 Linking biogeochemistry to aerosol-cloud interactions in the Southern Ocean and Antarctic: Round the world session - What do we need to improve our models?

Present PICCAASO key science questions and plans, engage community members that can contribute

Catch2022Session1.pdf

20:00 Poster session and informal discussion

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

21:00 Introductions and overview of discussion from previous sessions

S1_intro_part3.mp4

21:10 Defining the "Polar Front"

Speaker: Sonya Fiddes

S1_Fiddes_2110.mp4

21:25 Evaluation of methods to estimate dry marine aerosol surface area from bulk optical measurements over the Southern Ocean

Speaker: Kathryn Moore

S1_Moore_2125.mp4

21:40 Importance of remote marine aerosol

Speaker: Leighton Regayre (University of Leeds)

S1_Regayre_2140.mp4

21:55 ESMs + biogeochemistry to clouds

Speaker: Susannah Burrows

S1_Burrows_2155.mp4

22:10 Discussion

20:00 → 21:00 Posters and social time in gather.town

Join Poster session in GatherTown here

20:00 poster session & social time & informal discussions

Bring your own drink and snack. View posters, meet CATCH scientists, and discuss science (and other topics) in gatherTown

Join poster session and social time in gatherTown with this link

Tuesday 10 May

07:00 → 10:00 Ocean-ice-snow-atmosphere fluxes: Round the world session - focus on trace gas flux above snow, (sea)ice & ocean

Presentation of the current approaches to quantify trace gas and aerosol fluxes above ocean, ice and snow surfaces. Discussion of the strategies to overcome limitations/uncertainties in measurement strategies and how to use this flux information within models.

In order to help with preparation of the invited talks and to structure the workshop discussions, some relevant science questions are listed below for guidance:

How is flux defined in the study presented?
What are the advantages, limitations and common pitfalls of the selected method to measure flux?
uncertainties
temporal resolution
foot print; what area are the observations representative of?
time scale problem: turbulent mixing time vs. chemical lifetime
Which new instrumental techniques may exist to improve direct gas/aerosol flux estimates?
Which indirect methods exist to estimate gas/aerosol flux (potentially new to this community)?
How are gas/aerosol fluxes parameterised? How well constrained are the model parameters and what is their uncertainty? Are these parameterisations being used in existing regional/global models? If not, why?

Catch2022Session2.pdf

07:00 Poster Session and Informal Discussions

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

08:00 Welcome and introduction

Introduction_Frey_Flux_session_1.mp4

08:10 Trace gas flux in/above snow

Speaker: Detlef Helmig

S2_0810_Helmig.mp4

08:20 Eddy accumulation HONO flux measurements

Speaker: Jörg Kleffmann (University of Wuppertal)

GMT20220510-062831_Recording_1920x1080.mp4

08:30 Water vapour fluxes above snow in conditions of drifting and blowing snow

Speaker: Armin Sigmund

SigmundVideo.mp4

08:40 The role of the atmospheric boundary layer above snow/ice for vertical exchange fluxes

Speaker: Timo Vihma

GMT20220510-065642_Recording_1920x1030.mp4

08:50 NOx flux chamber measurements in Antarctica

Speaker: Joel Savarino (IGE-CNRS)

GMT20220510-071401_Recording_2560x1440.mp4

09:00 GHG flux chamber measurements above sea ice

Speaker: Daiki Nomura

S2_0900_Nomura.mp4

S2_Nomura_live.mp4

09:10 Heavy metals and pollutants particles deposition in northern Tibetan Plateau glaciers

Speaker: Zhiwen Dong (Chinese Academy of Sciences)

GMT20220510-073730_Recording_2560x1600.mp4

09:20 Questions and Discussion

07:00 → 08:00 Posters and social time in gather.town

Join Poster session in GatherTown here

07:00 poster session & social time & informal discussions

Bring your own drink and snack. View posters, meet CATCH scientists, and discuss science (and other topics) in gatherTown

Join Poster Session and Social Event in GatherTown

14:00 → 17:00 Ocean-ice-snow-atmosphere fluxes: Plenary session, keynote presentation and discussions

Presentation of the current approaches to quantify trace gas and aerosol fluxes above ocean, ice and snow surfaces. Discussion of the strategies to overcome limitations/uncertainties in measurement strategies and how to use this flux information within models.

In order to help with preparation of the invited talks and to structure the workshop discussions, some relevant science questions are listed below for guidance:

How is flux defined in the study presented?
What are the advantages, limitations and common pitfalls of the selected method to measure flux?
uncertainties
temporal resolution
foot print; what area are the observations representative of?
time scale problem: turbulent mixing time vs. chemical lifetime
Which new instrumental techniques may exist to improve direct gas/aerosol flux estimates?
Which indirect methods exist to estimate gas/aerosol flux (potentially new to this community)?
How are gas/aerosol fluxes parameterised? How well constrained are the model parameters and what is their uncertainty? Are these parameterisations being used in existing regional/global models? If not, why?

Catch2022Session2.pdf

14:00 Poster Session & Informal Discussions

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

15:00 Introduction and summary of session 1

S2_intro.mp4

15:10 Keynote: Air-Sea Trace Gas Fluxes - A Focus on Turbulent Flux Methods for the Cryosphere

Speaker: Byron Blomquist

S2_Blomquist.mp4

15:40 Keynote: On-line sea-air fluxes of sea spray and of VOC using ship-borne interfacial enclosures

Speaker: Karine Sellegri

S2_Sellegri.mp4

16:10 Questions and Discussion

14:00 → 15:00 Posters and social time in gather.town

Join Poster session in GatherTown here

14:00 poster session & social time & informal discussions

Bring your own drink and snack. View posters, meet CATCH scientists, and discuss science (and other topics) in gatherTown

Join poster session and social event in gatherTown

18:00 → 21:00 Ocean-ice-snow-atmosphere fluxes: Ocean-ice-snow-atmosphere fluxes: Round the world session

Presentation of the current approaches to quantify trace gas and aerosol fluxes above ocean, ice and snow surfaces. Discussion of the strategies to overcome limitations/uncertainties in measurement strategies and how to use this flux information within models.

In order to help with preparation of the invited talks and to structure the workshop discussions, some relevant science questions are listed below for guidance:

How is flux defined in the study presented?
What are the advantages, limitations and common pitfalls of the selected method to measure flux?
uncertainties
temporal resolution
foot print; what area are the observations representative of?
time scale problem: turbulent mixing time vs. chemical lifetime
Which new instrumental techniques may exist to improve direct gas/aerosol flux estimates?
Which indirect methods exist to estimate gas/aerosol flux (potentially new to this community)?
How are gas/aerosol fluxes parameterised? How well constrained are the model parameters and what is their uncertainty? Are these parameterisations being used in existing regional/global models? If not, why?

Catch2022Session2.pdf

18:00 Poster Session & Informal Discussions

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

19:00 Introduction and summary of sessions 1 & 2

S2_intro.mp4

19:10 Arctic sea spray flux measurements

Speaker: Matthew Salter

S2_Salter.mp4

19:20 Parameterization of sea salt from blowing snow in GEOS-Chem

Speaker: Betty Croft

S2_Croft.mp4

19:30 Measurements of chemically-resolved aerosol fluxes by eddy covariance in Alaska

Speaker: Erin Boedicker

S2_Boedicker.mp4

19:40 Ice cores record deposition of perfluorinated pollutants in the Arctic

Speaker: Cora Young

S2_Young.mp4

19:50 Black carbon and other light-absorbing impurity flux to snow in the Andes

Speaker: Nicolas Huneeus

S2_Huneeus.mp4

20:00 Questions and Discussion

18:00 → 19:00 Posters and social time in gather.town

Join Poster session in GatherTown here

18:00 poster session & social time & informal discussions

Bring your own drink and snack. View posters, meet CATCH scientists, and discuss science (and other topics) in gatherTown

Join poster session and social events in gatherTown

Wednesday 11 May

07:00 → 10:00 Polar halogen chemistry and interlinked processes: Plenary session, presentation and discussions

What is the role of snow, including snow on sea ice, compared to sea salt aerosols in activating and sustaining halogen chemistry? What are the main outstanding questions regarding how halogens influence atmospheric aerosols and oxidation capacity?

Catch2022Session3.pdf

07:00 Poster Session & Informal Discussions

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

08:00 Introductions and welcome

08:10 Insights into multiphase iodine chemistry in cold environments

Speaker: Antoine Roger Roose (PSI - Paul Scherrer Institut)

GMT20220511-061729_Recording_1920x1080.mp4

08:20 Halogens in Ice Core Records

Speaker: Andrea Spolaor (University of Siena)

GMT20220511-062801_Recording_1600x800.mp4

08:30 Modeling snowpack emissions and recycling of Arctic bromine and chlorine

Speaker: Shaddy Ahmed

GMT20220511-064322_Recording_1760x900.mp4

08:40 Interfacial supercooling and the precipitation of hydrohalite in frozen NaCl solutions as seen by X-ray absorption spectroscopy

Speaker: Thorsten Bartels-Rausch (PSI - Paul Scherrer Institut)

GMT20220511-065704_Recording_1832x982.mp4

08:50 Impacts of Surface and Blowing Snow Sources of Arctic Bromine Activation

Speaker: Louis Marelle

GMT20220511-070652_Recording_1600x778.mp4

09:00 Questions and Discussion

07:00 → 08:00 Posters and social time in gather.town

Join Poster session in GatherTown here

07:00 poster session & social time & informal discussions

Bring your own drink and snack. View posters, meet CATCH scientists, and discuss science (and other topics) in gatherTown

Join poster session and social events in gather town

11:00 → 14:00 Polar halogen chemistry and interlinked processes: Round the world session

What is the role of snow, including snow on sea ice, compared to sea salt aerosols in activating and sustaining halogen chemistry? What are the main outstanding questions regarding how halogens influence atmospheric aerosols and oxidation capacity?

Catch2022Session3.pdf

11:00 Poster Session & Informal Discussion

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

12:00 Introduction & Summary

12:10 Iodine chemistry over the Southern Ocean

Speaker: Anoop Mahajan

GMT20220511-101130_Recording_1920x1080.mp4

12:20 New particle formation over the high Arctic pack ice by enhanced iodine emissions

Speaker: Andrea Baccarini

BaccariniVideo.mov

12:30 Iodine chemistry in the polar regions

Speaker: Lucy Carpenter

GMT20220511-103606_Recording_2560x1440.mp4

12:40 Atmospheric sea-salt and halogen cycles in the Antarctic

Speaker: Keiichiro Hara

GMT20220511-105432_Recording_1920x1080.mp4

12:50 Questions and Discussion

11:00 → 12:00 Posters and social time in gather.town

Join Poster session in GatherTown here

11:00 poster session & social time & informal discussions

Bring your own drink and snack. View posters, meet CATCH scientists, and discuss science (and other topics) in gatherTown

Join poster session and social events in gatherTown

20:00 → 23:10 Polar halogen chemistry and interlinked processes: Round the world session

What is the role of snow, including snow on sea ice, compared to sea salt aerosols in activating and sustaining halogen chemistry? What are the main outstanding questions regarding how halogens influence atmospheric aerosols and oxidation capacity?

Catch2022Session3.pdf

20:00 Poster Session & Informal Discussion

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

21:00 Introduction

21:10 Artificial neural network simulations of BrO in the Arctic troposphere

Speaker: Anne Blechschmidt

BlechschmidtVideo.mp4

21:20 The influence of snow on Arctic halogen chemistry

Speaker: Kerri Pratt

GMT20220511-192831_Recording_3840x2160.mp4

21:30 Horizontal and vertical distributions of reactive bromine in the Arctic

Speaker: Bill Simpson

GMT20220511-194225_Recording_1920x1050.mp4

21:40 A cyclone-induced bromine explosion event in Ny-Ålesund, Svalbard

Speaker: Xin Yang (BAS)

GMT20220511-195537_Recording_1760x900.mp4

21:50 Role of blowing snow as a source of sea salt aerosol and halogens in polar regions

Speaker: Lyatt Jaegle

GMT20220511-200750_Recording_1760x900.mp4

22:00 Questions and Discussion

20:00 → 21:00 Posters and social time in gather.town

Join Poster session in GatherTown here

20:00 poster session & social time & informal discussions

Bring your own drink and snack. View posters, meet CATCH scientists, and discuss science (and other topics) in gatherTown

Join poster session and social events in gather town

Thursday 12 May

07:00 → 08:00 Posters and social time in gather.town

Join Poster session in GatherTown here

07:00 poster session & social time & informal discussions

Bring your own drink and snack. View posters, meet CATCH scientists, and discuss science (and other topics) in gatherTown

Join poster session and social events in gather town

07:00 → 10:00 Cryospheric links to aerosol-cloud interactions: Round the world session, presentations and discussions

Catch2022Session4.pdf

07:00 Poster Session & Informal Discussions

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

08:00 Introductions and welcome

S4_intro.mp4

08:10 Keynote: Arctic ice-nucleating particles and climate

Speaker: Ben Murray

S4_Murray.mp4

08:40 Challenges of modelling aerosol-cloud interactions

Speaker: Luisa Ickes

S4_Ickes.mp4

08:55 Insights from a year-round record of ice nucleating particles over Svalbard during MOSAiC

Speaker: Yutaka Tobo

09:10 Clouds in Northern Alaska demonstrate sensitivity to local industrial aerosol emissions

Speaker: Max Maahn

S4_Maahn.mp4

09:25 Questions and Discussion

11:00 → 12:00 Posters and social time in gather.town

Join Poster session in GatherTown here

11:00 poster session & social time & informal discussions

Bring your own drink and snack. View posters, meet CATCH scientists, and discuss science (and other topics) in gatherTown

Join poster session and social events in gather town

11:00 → 14:00 Cryospheric links to aerosol-cloud interactions: Round the world session, presentations and discussions

Catch2022Session4.pdf

11:00 Poster Session & Informal Discussion

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

12:00 Introductions

S4_intro.mp4

12:10 Keynote: Introducing QuIESCENT Arctic

Speaker: Gillian Young McCusker

S4_Young.mp4

12:40 CCN over the Southern Ocean in the austral summer of 2015

Speaker: Kirsten Fossum

S4_Fossum.mp4

12:55 Recent work over the Southern Ocean

Speaker: Kayte Altieri

S4_Altieri.mp4

13:10 Trends in Arctic aerosols and implications for Arctic cloud formation

Speaker: Andreas Massling

S4_Massling.mp4

13:25 Questions and Discussion

17:00 → 18:00 Posters and social time in gather.town

Join Poster session in GatherTown here

17:00 poster session & social time & informal discussions

Bring your own drink and snack. View posters, meet CATCH scientists, and discuss science (and other topics) in gatherTown

Join poster session and social events in gather town

17:00 → 20:00 Cryospheric links to aerosol-cloud interactions: Plenary session, presentation and discussions

Catch2022Session4.pdf

17:00 Poster Session & Informal Discussions

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

18:00 Introductions

S4_intro.mp4

18:10 Insights and ongoing questions from the NETCARE project on summertime Arctic aerosol and CCN

Speaker: Megan Willis (Colorado State University)

S4_Willis.mp4

18:40 Surface-coupling effect on heterogeneous ice formation in Arctic mixed-phase clouds during MOSAiC

Speaker: Hannes Griesche

S4_Griesche.mp4

18:55 Simulating Remote Aerosol and Ice Nucleating Particle Populations

Speaker: Christina McCluskey

S4_McCluskey.mp4

19:10 Potential consequences of low aerosol concentrations in the Arctic on clouds

Speaker: Adele Igel

S4_Igel.mp4

19:25 Questions and Discussion

Friday 13 May

05:00 → 06:00 social time & informal discussions

Bring your own drink and snack. Meet CATCH scientists, and discuss science (and other topics) in gatherTown

Join social events in gather town

05:00 → 08:00 Coupling of ocean-ice-atmosphere processes: from sea-Ice biogeochemistry to aerosols and Clouds (SCOR WG #163: CIce2Clouds): Educational talks (to be recorded) on CIce2Cloud topics and discussion

Present educational sessions on cross-cutting themes that link the sea-ice/ocean/atmosphere system.

Present the plans for CIce2Clouds, and first steps from sub-working groups, to the community and engage community participation.

Catch2022Session5.pdf

05:00 Informal Discussions

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

06:00 Intro to CIce2Clouds

Speakers: Megan Willis, Nadja Steiner

06:10 Algal Functional Groups and the Polar Sulfur Cycle

Speaker: Jacqueline Stefels

StefelsVideo.mp4

06:45 Discussion

07:00 What we know about chemistry of snow that is relevant for snow on sea-ice

Speaker: Jennie Thomas (IGE/CNRS)

GMT20220513-050232_Recording_1920x1080.mp4

07:35 Discussion

13:30 → 14:30 social time & informal discussions

Bring your own drink and snack. Meet CATCH scientists and discuss science (and other topics) in gatherTown

Join social events in gather town

13:30 → 16:30 Coupling of ocean-ice-atmosphere processes: from sea-Ice biogeochemistry to aerosols and Clouds (SCOR WG #163: CIce2Clouds): Educational talk (to be recorded) on CIce2Cloud topics and discussion and Joint Campaign Planning

Present educational sessions on cross-cutting themes that link the sea-ice/ocean/atmosphere system.

Present the plans for CIce2Clouds, and first steps from sub-working groups, to the community and engage community participation.

Catch2022Session5.pdf

13:30 Informal Discussions

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

14:30 Aerosol as Nuclei for Cloud Formation in Polar Environments

Speakers: Jessie Creamean, Paul Zieger

PaulJessieVideo.mp4

15:05 Discussion

15:20 Joint Campaign Planning Discussion

16:20 Other Working Group Business

17:00 → 18:00 social time & informal discussions

Bring your own drink and snack. Meet CATCH scientists and discuss science (and other topics) in gatherTown

Join social events in gather town

17:00 → 20:00 Coupling of ocean-ice-atmosphere processes: from sea-Ice biogeochemistry to aerosols and Clouds (SCOR WG #163: CIce2Clouds): Updates on CIce2Clouds working group activities and community discussion

Present educational sessions on cross-cutting themes that link the sea-ice/ocean/atmosphere system.

Present the plans for CIce2Clouds, and first steps from sub-working groups, to the community and engage community participation.

Catch2022Session5.pdf

17:00 Informal Discussions

https://app.gather.town/app/ueKHvojBKqY9wBgq/Catch%20Science

18:00 Update: Primary aerosol working group

18:15 Discussion

18:35 Update: Sulfur cycle working group

18:50 Discussion

19:10 Update: Nitrogen cycle working group

19:25 Discussion