Measuring and Modelling Gross Primary Productivity in Alpine and Arctic Tundra: from Point to Landscape Scale Using Satellite Data

• Main Authors: Mariasilvia Giamberini, Sebastian Aleksandrowicz, Francesca Avogadro di Valdengo, Ilaria Baneschi, Alice Baronetti, Arnon Karnieli, Marta Magnani, Silvio Marta, Antonio Monteiro, Natalia Panov, Manuel Salvoldi, Saverio Vicario, Gianna Vivaldo, Edyta Wozniak, Antonello Provenzale
• Format: Conference Object
• Language: English
• Published: 2023
• Subjects: Gross Primary Productivity; Remote Sensing; Eddy Covariance; Arctic; Alpine Grasslands; Gran Paradiso National Park; ecosystems modelling; Climate change; Ny Ålesund; Ny-Ålesund; Svalbard; Tundra
• Online Access: https://zenodo.org/record/8403486; https://doi.org/10.5281/zenodo.8403486

Measuring and Modelling Gross Primary Productivity in Alpine and Arctic Tundra: from Point to Landscape Scale Using Satellite Data Authors: Mariasilvia Giamberini (1), Sebastian Aleksandrowicz (2), Francesca Avogadro (1), Ilaria Baneschi (1), Alice Baronetti (1), Arnon Karnieli (3), Marta Magnani (1), Silvio Marta (1), Antonio Monteiro (4), Natalya Panov (3), Angelica Parisi (1), Manuel Salvoldi (3), Saverio Vicario (5), Gianna Vivaldo (1), Edyta Woźniak (3), Antonello Provenzale (1). Istituto di Geoscienze e Georisorse, Consiglio Nazionale delle Ricerche, Italy Centrum Badań Kosmicznych Polskiej Akademii Nauk, Bartycka 18A 00-716 Warsaw, Poland The Remote Sensing Laboratory, Ben Gurion University of the Negev, Israel Institute of Geography and Spatial Planning (IGOT-CEG), University of Lisbon, Portugal Istituto sull’Inquinamento Atmosferico, Consiglio Nazionale delle Ricerche, Italy Gross primary productivity (GPP) is an Essential Variable needed for evaluating the status and changes in terrestrial ecosystems. Measuring GPP in the Alpine and Arctic tundra is especially important. It is also challenging, due to the remoteness of the sites and the harsh weather conditions. Nevertheless, an effort is necessary to understand the behaviour of such natural ecosystems in front of climate change. For this aim, the Institute of Geoscience and Earth Resources of the National Research Council of Italy established two Critical Zone Observatories, respectively in the Western Italian Alps (Nivolet Plain, Gran Paradiso National Park, since 2017) and in the High Arctic (Ny Ålesund, Svalbard, since 2019) both equipped with portable flux chambers and an Eddy Covariance tower. Since then, Gross Primary Productivity and Ecosystem Respiration (ER) have been measured during summer and empirical models have been implemented, correlating GPP and ER to climate variables and other environmental parameters meant to represent vegetation biomass. While flux chambers allow a detailed mapping of an area by capturing the spatial heterogeneity ...