Production of the high resolution maps of biophysical variables based on SPOT imagery and in-situ measurements generated by PASTIS 57 for Hyytiala, Finland

This study describes the production of high resolution maps of leaf area index (LAI) for the Hyytiala site in Finland. The maps are derived from a transfer function between the SPOT images acquired in August, September and October 2010 and in-situ measurements using PASTIS 57 (PAI Autonomous system from Transmittance Sensors at 57°), an instrument capable of acquiring continuous measurements of transmittance (INRA, France). The LAI maps for three months are consistent; the average values decline from August to October in the expected manner. The study is established in support of preparation for the Sentinel-2 mission.