We are looking forward to seeing you virtually and/or in-person May 19 and 20 at the LA Megacities/NIST LA GHG Measurements Testbed Team Meeting to be held at the Keck Institute for Space Studies on the Caltech campus. This will be an opportunity to broaden the scope of previous meetings to include discussion of the collaborative activities resulting from NOAA’s SUNVEX campaign last fall and to explore areas of mutual benefits between air quality and GHG measurements research. This meeting will include an overview of recent updates from the LA project, related presentations, and a discussion of strategies for moving forward. We will also focus on lessons learned from the 2021 SUNVEX campaign and how these impact AEROMMA planning for its July/Aug 2023 time frame. Friday afternoon will focus on near term paper and analysis priorities. We hope that these discussions will result in commitments from team members for near term deliverables.