Evaluation of the LSA-SAF gross primary production product derived from SEVIRI/MSG data (MGPP)

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • B. Martínez - , University of Valencia (Author)
  • M. A. Gilabert - , University of Valencia (Author)
  • S. Sánchez-Ruiz - , University of Valencia (Author)
  • M. Campos-Taberner - , University of Valencia (Author)
  • F. J. García-Haro - , University of Valencia (Author)
  • C. Brümmer - , Johann Heinrich von Thunen Institute (Author)
  • A. Carrara - , Mediterranean Center for Environmental Studies (CEAM) (Author)
  • G. Feig - , Council for Scientific and Industrial Research, University of Pretoria (Author)
  • T. Grünwald - , Chair of Meteorology (Author)
  • I. Mammarella - , University of Helsinki (Author)
  • T. Tagesson - , Lund University, University of Copenhagen (Author)

Abstract

The objective of this study is to describe a completely new 10-day gross primary production (GPP) product (MGPP LSA-411) based on data from the geostationary SEVIRI/MSG satellite within the LSA SAF (Land Surface Analysis SAF) as part of the SAF (Satellite Application Facility) network of EUMETSAT. The methodology relies on the Monteith approach. It considers that GPP is proportional to the absorbed photosynthetically active radiation APAR and the proportionality factor is known as the light use efficiency ε. A parameterization of this factor is proposed as the product of a εmax, corresponding to the canopy functioning under optimal conditions, and a coefficient quantifying the reduction of photosynthesis as a consequence of water stress. A three years data record (2015–2017) was used in an assessment against site-level eddy covariance (EC) tower GPP estimates and against other Earth Observation (EO) based GPP products. The site-level comparison indicated that the MGPP product performed better than the other EO based GPP products with 48% of the observations being below the optimal accuracy (absolute error < 1.0 g m−2 day−1) and 75% of these data being below the user requirement threshold (absolute error < 3.0 g m−2 day−1). The largest discrepancies between the MGPP product and the other GPP products were found for forests whereas small differences were observed for the other land cover types. The integration of this GPP product with the ensemble of LSA-SAF MSG products is conducive to meet user needs for a better understanding of ecosystem processes and for improved understanding of anthropogenic impact on ecosystem services.

Details

Original languageEnglish
Pages (from-to)220-236
Number of pages17
JournalISPRS journal of photogrammetry and remote sensing
Volume159
Publication statusPublished - Jan 2020
Peer-reviewedYes

External IDs

Scopus 85072645757
ORCID /0000-0003-2263-0073/work/163765962

Keywords

Sustainable Development Goals

Keywords

  • 10-day, GPP, Light-use efficiency, LSA SAF, MGPP, SEVIRI/MSG, Water stress