Long-term Biosphere-Atmosphere chemical flux workshop

Final Report: Download here

Workshop agenda: Download here

Dates: November 13-14, 2017

Location: Beckman Center of the National Academies of Sciences and Engineering, Irvine California, USA

Organizing committee: Alex Guenther (UC Irvine), Allen Goldstein (UC Berkeley), Allison Steiner (U Michigan), Christine Wiedinmyer (U Colorado), Delphine Farmer, (Colorado State U), Havala Pye (USEPA)

For questions contact Alex Guenther (alex.guenther@uci.edu)

Workshop Motivation:

The National Academy of Sciences, Board on Atmospheric Sciences and Climate, Committee on the Future of Atmospheric Chemistry Research recently identified priorities and strategic steps forward for atmospheric chemistry research for the next decade in a report titled, “The Future of Atmospheric Chemistry Research: Remembering Yesterday, Understanding Today, Anticipating Tomorrow”. This workshop is an initial step towards addressing one of the recommendations, that “The National Science Foundation should take the lead in coordinating with other agencies to identify the scientific need for long-term measurements and to establish synergies with existing sites that could provide core support for long-term atmospheric chemistry measurements, including biosphere–atmosphere exchange of trace gases and aerosol particles.”

Scientific topics:

  • Micrometeorology: turbulence and canopy-atmosphere exchange
  • Atmospheric oxidants: role of biogenic organic and nitrogen emissions
  • Aerosol: biological primary particles and biogenic secondary aerosol
  • Deposition: impact on atmosphere and ecosystems
  • Feedbacks, multiscale processes and earth system changes: linking canopy fluxes to regional/global changes in atmospheric composition, climate, and land use

Scientific Questions:

  • How sensitive are atmospheric composition and climate simulations to different representations of biosphere-atmosphere chemical exchange and what are the most accurate ones?
  • How do human activities affect atmospheric composition, air quality and climate through changes in biosphere-atmosphere chemical exchange and interactions?
  • What are the important feedbacks that affect biosphere-atmosphere coupling?

Workshop goals:

  • assess the need for long-term measurements of biosphere-atmosphere chemical exchange to address outstanding scientific questions
  • characterize existing research activities and approaches for investigating biosphere-atmosphere chemical exchange across key ecosystems
  • identify scientific community needs including innovative instrumental and modeling approaches that could transform the community capabilities for comprehensive, long-term observations of biosphere-atmosphere chemical exchange.
  • explore need and potential for interagency effort to establish a national, and ultimately international, network to investigate long-term chemical fluxes.
  • strategy for developing a quantitative understanding of the response of ecosystems to global change that will improved air quality and climate predictions.


  • November 13, 9 am to 5 pm
    • Welcome and objectives;
    • Background/overview presentations on long term chemical flux measurement activities including ATTO Brazil (P. Artaxo), Hyytiala Finland (J. Rinne), Ameriflux (D. Baldocchi), UMBS/PROPHET (S. Bertman), Harvard Forest (S. Wofsy/TBD), Manitou Forest (J. Smith), NEON (H. Luo), NADP (D. Gay), CASTNET (B. Sive) (Lessons learned, what is being done well, what is missing)
    • Identify/prioritize scientific topics/questions.
  • November 14, 9 am to 4 pm
    • Determine approach (sites, measurements, models, data management, resources) required to address scientific topics/questions.
    • Synthesis, initiate report/publication, discuss next steps

Remote participation:

Webex was used to provide an opportunity for remote participants to speak and to send in slides that were shared with the group.

Logistics for in-person participation:

The conference venue is located at 100 Academy Way, Irvine, CA 92617. There is free parking at the center.

We have arranged a workshop rate at the following hotels. We will provide transportation between these hotels and the conference venue.

Hyatt Regency Newport Beach - $159 per night plus taxes and fees

1107 Jamboree Road, Newport Beach, CA 92660 US



Ayres Hotel, 325 Bristol Street, Costa Mesa, CA 92626

(800) 322-9992, (714) 549-0300


Ask for UCI Room rate: $115 per night plus tax. Parking is included .

Registration. There is no charge to attend the conference but all participants need to register. Registration will close on October 26.

Please use this link to register: https://ps.uci.edu/NSFChemicalFluxWorkshop

We are grateful to the NSF/GEO/AGS Atmospheric Chemistry program for financial support and the AirUCI Institute for sponsoring the workshop