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Comparison of AVHRR-Based Global Data Records

  • Felix KoganEmail author
  • Marco Vargas
  • Wei Guo
Conference paper
Part of the NATO Science for Peace and Security Series C: Environmental Security book series (NAPSC)

Abstract

Several global data sets have been developed from the AVHRR instrument measuring reflectance/emission of the Earth since the early 1980s. The longest datasets currently available for users are NOAA’s Global Vegetation Health (GVH), NASA’s Global Inventory Modeling and Mapping Studies (GIMMS) and Land Long Term data Records (LTDR). The GVH has 30-year records (1981–2010), GIMMS – 26 (1981–2006) and LTDR – 19 (1981–1999). These datasets have different spatial and temporal resolutions, processing methods (sampling, calibration, noise removal, mapping, gap treatment etc.), applicability, availability, distribution etc. They have been used frequently for monitoring earth surface, atmosphere near the ground and analysis of climate related land surface trends. Since one of the common features of these datasets is the Normalized Difference Vegetation Index (NDVI) this paper is focusing on comparison of NDVI time series, specifically comparing time series dynamics and trends. It is shown that GIMMS NDVI is two to three times higher and has steeper long-term trend compared to GVH and LTDR.

Keywords

Vegetation health 30-year 4-km data records Vegetation condition index (VCI) Temperature (TCI) and Vegetation health (VHI) indices NDVI and BT 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.NESDIS/NOAA, Center for Satellite Application and Research (STAR)WashingtonUSA
  2. 2.IMSG Inc.WashingtonUSA

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