GPP - AGAME (Automated Gross Primary Production Application for Monitoring Ecosystem Health within GEOSS)
- 1. Umweltbundesamt GmbH
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2.
Deltares
- 3. Umweltforschungszentrum Leipzig-Halle
Description
Assessing the status and change of ecosystems and understanding the effects of global change is important to design and trigger actions to sustain biodiversity and natural processes or to foster sustainable management. Gross Primary Production is one indicator to assess ecosystem health. Gross Primary Production represents the total amount of carbon fixed by plants in an ecosystem over a specific period. GPP data products are derived using a data-driven approach that integrates Earth observation data with in-situ carbon flux measurements.
Site and Platform Coordinators require spatially explicit time series data on gross primary production to investigate declines in carbon uptake due to global warming and to predict future biosphere conditions influenced by changing climate and land use. In this respect, the AGAME showcase contributed to the GPP project in order to (a) provide consistent data products together with detailed metadata. as the availability and accessibility of data and derived products will stimulate their exploitation by a wide range of users in the biodiversity sector, and (b) generate added value products to facilitate the use of remote sensing data in new applications involving the vision of new operational products in the GEOSS portal that will lead to an increased understanding of Earth processes.
This included the collection and analysis of the data and functional requirements in a co-design process with users and the developers of the GEOSS environment. AGAME resulted in the development of a machine-learning model for gross primary production, the production of time-series of gross primary production for 16 sites, publish the information as OGC services including metadata, and publish the results via the GEOSS Portal linking additional communities. By doing so, AGAME contributes to the development of the GEOSS platform by delivering information on gross primary production accessible via the GEOSS Platform.
The document provides the main information regarding the AGAME data product Gross Primary Production which is provided with a 10 m spatial resolution every 5-days for the period June 2017-December 2023 for 16 long-term observation sites. The period differs site by site depending upon in-situ data availability. The highest temporal resolution of 5-days is achieved in periods with 50% free-cloud conditions in the area of interest. In other cases, when cloud cover exceeds this threshold, the data is excluded, resulting in reduced frequency.