Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation

Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation, Meeting #2

June 6, 2024

11:00 AM - 2:00 PM (EDT)

Past

Agenda

Download the Agenda

About

This will be a virtual meeting with an open session for data-gathering purposes.

Vimeo Link

https://vimeo.com/event/4345046

Additional Information

Is it a Closed Session event?

Partially Closed

The following committee members were present at the closed sessions of the event

Joyce Penner
Tim Lieuwen
Sean Bradshaw
Eric Ducharme
Steve Barrett
John Hansman
Leticia Cuellar-Hengartner
Richard Moore
Michael Prather

The following topics were discussed in the closed sessions:

Committee composition. Planning for future meetings. Schedule. Possible future speaker.

The following materials (written documents) were made available to the committee in the closed sessions:

N/A

Date of posting of Closed Session Summary:

June 12, 2024

Contact

Linda Walker

lwalker@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

Meeting Closed

Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation, Meeting #11

December 20, 2024

12:30 PM - 2:30 PM (EST)

Past

About

This will be a closed session meeting to discuss the report draft.

Additional Information

Is it a Closed Session event?

Institution Closed

The following committee members were present at the closed sessions of the event

Rich Moore
Tim Lieuwen
Andrew Gettelman
Joyce Penner
Michael Prather

The following topics were discussed in the closed sessions:

The draft report. Schedule.

The following materials (written documents) were made available to the committee in the closed sessions:

N/A

Date of posting of Closed Session Summary:

December 20, 2024

Contact

Linda Walker

lwalker@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

Meeting Closed

Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation, Meeting #10

December 19, 2024

9:30 AM - 10:30 AM (EST)

Past

About

This will be a closed session meeting to discuss the draft report.

Additional Information

Is it a Closed Session event?

Institution Closed

The following committee members were present at the closed sessions of the event

Tim Lieuwen
Rich Moore
John Hansman
Joyce Penner
Eric Ducharme
Sean Bradshaw
Andrew Gettleman
Leticia Cuellar

The following topics were discussed in the closed sessions:

Draft report and review schedule.

The following materials (written documents) were made available to the committee in the closed sessions:

N/A

Date of posting of Closed Session Summary:

December 19, 2024

Contact

Linda Walker

lwalker@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

Meeting

Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation, Meeting #9

December 3 - 4, 2024

Past

About

This will be an in-person meeting in Washington, DC, in the Keck Building.

There will be an open session on Dec 4, 11 AM - 12 Noon.

Vimeo Link for December 4th.

https://vimeo.com/event/4751188

The speaker will be Rich Wahls of NASA, discussing the status of the NASA program. We may follow him with 1-2 speakers from the airline industry providing an update on their work since our previous open session meeting with them.

Additional Information

Is it a Closed Session event?

Partially Closed

The following committee members were present at the closed sessions of the event

Tim Lieuwen
Joyce Penner
Andrew Gettelman
Eric Ducharme
John Hansman
Leticia Cuellar
Sean Bradshaw
Steven Barrett
Rich Moore

The following topics were discussed in the closed sessions:

Drafting report. Schedule. Any future meeting requirements.

The following materials (written documents) were made available to the committee in the closed sessions:

N/A

Date of posting of Closed Session Summary:

December 03, 2024

Contact

Linda Walker

lwalker@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

Meeting Closed

Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation, Meeting #8

November 1, 2024

3:00 PM - 5:00 PM (EDT)

Past

About

This will be a closed session virtual meeting for writing purposes.

Additional Information

Is it a Closed Session event?

Institution Closed

The following committee members were present at the closed sessions of the event

Tim Lieuwen
Joyce Penner
Andrew Gettelman
Eric Ducharme
John Hansman
Leticia Cuellar
Sean Bradshaw
Rich Moore

The following topics were discussed in the closed sessions:

Draft report.

The following materials (written documents) were made available to the committee in the closed sessions:

N/A

Date of posting of Closed Session Summary:

December 17, 2024

Contact

Linda Walker

lwalker@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

Meeting Closed

Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation, Meeting #7

October 15, 2024

3:00 PM - 5:00 PM (EDT)

Past

About

This will be a closed session virtual meeting for writing purposes.

Additional Information

Is it a Closed Session event?

Institution Closed

The following committee members were present at the closed sessions of the event

Tim Lieuwen
Joyce Penner
Andrew Gettelman
Eric Ducharme
John Hansman
Leticia Cuellar
Sean Bradshaw
Steven Barrett
Rich Moore

The following topics were discussed in the closed sessions:

Draft report.

The following materials (written documents) were made available to the committee in the closed sessions:

N/A

Date of posting of Closed Session Summary:

December 17, 2024

Contact

Linda Walker

lwalker@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

Meeting Closed

Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation, Meeting #6

October 14, 2024

3:00 PM - 5:00 PM (EDT)

Past

About

This will be a closed session virtual meeting for writing purposes.

Additional Information

Is it a Closed Session event?

Institution Closed

The following committee members were present at the closed sessions of the event

Tim Lieuwen
Joyce Penner
Andrew Gettelman
Michael Prather
Eric Ducharme
John Hansman
Leticia Cuellar
Sean Bradshaw
Rich Moore

The following topics were discussed in the closed sessions:

Draft report.

The following materials (written documents) were made available to the committee in the closed sessions:

N/A

Date of posting of Closed Session Summary:

December 17, 2024

Contact

Linda Walker

lwalker@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

Meeting

Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation, Meeting #5

September 12, 2024

2:30 PM - 5:30 PM (EDT)

Past

Materials

Presentation from Curtis Marshall

About

This meeting will include speakers at the beginning, followed by a short closed session. Agenda is attached.

Vimeo Link

https://vimeo.com/event/4559076

Additional Information

Is it a Closed Session event?

Partially Closed

The following committee members were present at the closed sessions of the event

Tim Lieuwen
Joyce Penner
Andrew Gettelman
Eric Ducharme
John Hansman
Leticia Cuellar
Sean Bradshaw
Steven Barrett

The following topics were discussed in the closed sessions:

Planning for upcoming meetings, writing draft report. Schedule for study.

The following materials (written documents) were made available to the committee in the closed sessions:

N/A

Date of posting of Closed Session Summary:

May 12, 2025

Contact

Linda Walker

lwalker@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

Meeting

Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation, Meeting #4

August 19 - 21, 2024

Past

Materials

About

This will be a meeting with open sessions for data gathering and closed sessions for deliberations. Agenda is attached.

Vimeo Link Day 1

https://vimeo.com/event/4509056

Vimeo Link Day 2

https://vimeo.com/event/4509064

Additional Information

Is it a Closed Session event?

Partially Closed

The following committee members were present at the closed sessions of the event

Tim Lieuwen
Andrew Gettelman
Sean Bradshaw
Eric Ducharme
John Hansman
Joyce Penner
Rich Moore
Letitia Cuellar
Michael Prather
Steve Barrett

The following topics were discussed in the closed sessions:

Drafting the report. Future schedule. Future meetings. Speakers for meetings.

The following materials (written documents) were made available to the committee in the closed sessions:

N/A

Date of posting of Closed Session Summary:

August 21, 2024

Contact

Linda Walker

lwalker@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

Meeting

Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation, Meeting #3

July 12, 2024

1:00 PM - 4:00 PM (EDT)

Past

Agenda

Download the Agenda

About

This will be a virtual meeting with an open session for data-gathering purposes. Livestream link: https://vimeo.com/event/4436873

Additional Information

Is it a Closed Session event?

Partially Closed

The following committee members were present at the closed sessions of the event

Members present
Tim Lieuwen
Andrew Gettelman
Sean Bradshaw
Eric Ducharme
John Hansman
Joyce Penner
Rich Moore
Letitia Cuellar
Michael Prather

The following topics were discussed in the closed sessions:

Topics discussed
Schedule
Planning and speakers for the next meeting
Writing assignments.

The following materials (written documents) were made available to the committee in the closed sessions:

N/A

Date of posting of Closed Session Summary:

May 12, 2025

Contact

Linda Walker

lwalker@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

Meeting

Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation, Meeting #1

May 28, 2024

1:00 PM - 3:00 PM (EDT)

Past

Agenda

Download the Agenda

About

This will be a virtual, open meeting with a presentation on NASA contrails research for data gathering purposes. It may include a short closed session.

Livestream Link

https://vimeo.com/event/4285151

Additional Information

Is it a Closed Session event?

Not Closed

Contact

Linda Walker

lwalker@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

Meeting Closed

Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation (May 15, 2024)

May 15, 2024

2:00 PM - 3:00 PM (EDT)

Past

About

Bias and Conflict Discussion

Additional Information

Is it a Closed Session event?

Institution Closed

The following committee members were present at the closed sessions of the event

Tim Lieuwen, Steve Barrett, Sean Bradshaw, Leticia Cuellar-Hengartner, Eric Ducharme, Andrew Gettelman, Robert John Hansman, Robert Moore, Joyce Penner, Michael Prather and Alan Robuck

The following topics were discussed in the closed sessions:

Bias and Conflict Discussion with committee members.

The following materials (written documents) were made available to the committee in the closed sessions:

N/A

Date of posting of Closed Session Summary:

May 22, 2024

Contact

Linda Walker

lwalker@nas.edu

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

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Research Agenda for Reducing the Climate Impact of Aviation-Induced Cloudiness and Persistent Contrails from Commercial Aviation

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