Atmospheric Chemistry Center for Observational Research and Data (ACCORD)

Description TOGA (Trace organic gas analyzer) outside the aircraft.

The Atmospheric Chemistry Center for Observational Research and Data (ACCORD) was established in 2014, in cooperation with NSF, to better connect the Atmospheric Chemistry Observations and Modeling Laboratory (ACOM) with its University partners in the area of in situ observational research. The main goals of ACCORD are to build a better alliance between ACOM and University partners to address important, critical, and emerging questions in observational atmospheric chemistry, and to provide community input regarding the role of ACOM as a National Center in the area of in situ atmospheric chemistry measurements. ACCORD Mission Statement (2014).

2015 ACCORD Workshop

A workshop, open to the community, was held 30 March - 1 April in Boulder, CO. The workshop brought together over 100 scientists from our community to discuss future scientific directions and infrastructure needs, and to discuss ACOM's role in these future endeavors.

2016 Atmospheric Radiation Workshop

With support through NSF and ACCORD, ACOM hosted a 3.5 day workshop to discuss active areas of radiometric research, identify scientific priorities and provide guidance for future observational studies and techniques. The workshop was held 8-11 March 2016. A summary report will be completed shortly.

Activities and Field Campaigns

Several field campaigns and data analysis projects are being developed in partnership with ACCORD.

Requestable Facilities and Instruments

ACOM provides support for a number of instruments for community use, requestable through the LAOF (Lower Atmosphere Observing Facilities) process. Click for a list of these instruments and appropriate contact people.

Procedures for proposing field campaigns (aircraft- or ground-based), in which these instruments can be requested for deployment, are outlined on the EOL website: LAOF Digital Guide and Request LAOF.

NCAR EOL also offers the Airborne Research Instrumentation Testing Opportunity (ARISTO), an NSF-sponsored flight test program that will be conducted annually on one of the NSF/NCAR aircraft. The purpose of the ARISTO program is to provide regular flight test opportunities for newly developed or highly modified instruments as part of their development.

Subcommittee Report on Aircraft Inlet Capabilities

  • ACCORD formed a sub-committee to review current aircraft inlet capabilities and shortcomings, and recommend possible next steps. Read the report.

Researchers preparing for airborne sampling on board the NSF C130 Aircraft.

Collaborative In Situ Observational Research in ACOM – Come work with us!

ACOM conducts collaborative research in in situ observational atmospheric chemistry, including aircraft and ground-based instrument development and deployment, as well as chamber studies focusing on atmospheric processes in the gas- and aerosol-phase. For details and contact information, see:

Engineering Support

The ACOM Engineering Group provides engineering and technical support for development and fabrication of laboratory, ground-based, and airborne in situ measurement instruments.

ACCORD Seminar Series

As a component of the ACCORD program, ACOM is hosting a series of seminars given by scientists engaged in observational atmospheric chemistry and related research. The seminar series provides an opportunity to promote interactions between ACOM in situ observational scientists and the broader community. Confirmed invited speakers include Dr. Sally Ng (Georgia Tech, seminar May 4 2016), and Annmarie Carlton (Rutgers University, seminar date TBD).

Visitors and Seminars




ACOM | Atmospheric Chemistry Observations & Modeling