The Carbon Dynamics Working Group (CDWG) brings together observationalists, modelers and data scientists to document, study and understand rapid large-scale changes to the carbon cycle in the ABoVE Study Region. CDWG projects span scales from plot-level studies that provide process-level understanding of relevant drivers of carbon cycling to regional-scale measurements from airborne, tall towers, and spaceborne platforms. In addition, the majority of CDWG projects are highly interdisciplinary in nature - CDWG group members work closely with members from other thematic WGs to tackle one of the overarching science questions underpinning the ABoVE campaign - How are the magnitudes, fates, and land-atmosphere exchanges of carbon pools responding to environmental change, and what are the biogeochemical mechanisms driving these changes?

The Disturbance Working Group's purpose is to coordinate, collaborate and understand the research planned and ongoing in the ABoVE domain related to wildfire and insect disturbance, the interaction and drivers of these two factors and post-disturbance recovery. This working group strives to synthesize data to understand drivers, regional effects and change and also to identify data and research gaps.

The Hydrology & Permafrost component seeks to clarify processes controlling Arctic-boreal permafrost conditions and interactions with the water cycle, including the amount, distribution and status of water in the landscape. We also seek to understand the feedbacks and consequences of a changing permafrost and hydrologic regime on the regional flora, fauna, biogeochemistry and ecosystem services. The Wetlands component's purpose is to coordinate, collaborate, and understand the research happening in the ABoVE domain related to wetland mapping, monitoring, and process modeling. This working group will strive to identify common field and remote sensing methodologies and techniques in order to efficiently pool data and other resources and coordinate product development. Objectives of the working group are to synthesize data to understand regional conditions and change related to wetlands and to identify data and research gaps.

The Modeling Framework & Comparisons Working Group focuses on linking and synthesizing the various modeling activities across ABoVE, with a focus on terrestrial ecosystems.

The Vegetation Dynamics component focuses on synthesizing information regarding the changes that we have observed and potentially expect to see with regard to vegetation composition, structure, and function throughout the ABoVE geographic domain, as well as circumpolarly. Prominent components of vegetation change are shrub expansion and treeline advancement, however, these are only a part of the potential dynamics. In assessing vegetation dynamics, we examine the effects climate change, disturbances (e.g. fire, thermokarst), and land use. The Vegetation Structure & Function component will discuss, synthesize, and report ABoVE science activities related to the characterization & monitoring of the 3D attributes of shrubs and forest vegetation in the ABoVE study domain. The WG will also summarize ABoVE findings related to the implications of the current state of, and changes to, vegetation structure on ABoVE dynamics.

Spectral Imaging working group focuses on the use of spectral information to describe the characteristics and processes of high latitude ecosystems. We are interested in the use of optical remote sensing across the range of spatial, spectral, and temporal scales, from ground measurements, towers, drones, aircraft, and satellites, particularly those equipped for imaging spectroscopy (IS). We are also interested in the measurement and analysis of solar induced fluorescence (SIF).

The Collaborations and Engagement working group focuses on developing, coordinating, and maintaining science and data user partnerships across sectors and geographical areas. This WG engages with governments, Indigenous Nations, non-governmental organizations, and other institutions within the ABoVE study area. We facilitate connections between these groups and the ABoVE Science Team to collate and share scientific research results, including data products, GIS maps and measurements on topics as diverse as food security, permafrost subsidence, fire and vegetation management and ungulate ranges. The WG supports collaborations between end users and researchers to both increase the usability and use of ABoVE products as well as enhance our understanding of regional terrestrial ecology and coproduction needs. WG activities include advising and assisting the ABoVE Leadership Group and Science Team and with planning and outreach, as well as supporting coordination of activities among individual projects