Harmonization of Fraction of Absorbed Photosynthetically Active Radiation (FAPAR) from Sea-Viewing Wide Field-of-View Sensor (SeaWiFS) and Medium Resolution Imaging Spectrometer Instrument (MERIS)

Remote Sensing

Guido Ceccherini²  Nadine Gobron¹ 

[1] Climate Risk Management Unit, Institute for Environment and Sustainability, European Commission Joint Research Centre, TP 272, Ispra 21020, Italy;

关键词: MERIS;    SeaWiFS;    FAPAR;    harmonization;    trend;   

DOI  :  10.3390/rs5073357

来源: mdpi

【 摘 要 】

This paper describes the combination of terrestrial vegetation observations from two sensors, providing a historical dataset used for an in-depth analysis of the corresponding spatio-temporal patterns. The Fraction of Absorbed Photosynthetically Active Radiation (FAPAR) is an important variable suitable for regional to large-scale monitoring of climate impacts on vegetation. In this work, we create an extensive dataset of FAPAR using a 10-day product at ∼1 km resolution from September, 1997, to April, 2012, combining information from two sensors: the NASA/Sea-viewing Wide Field-of-view Sensor (SeaWiFS) and the European Space Agency (ESA)/Medium Resolution Imaging Spectrometer Instrument (MERIS). The proposed methodology reduces the noise, fills the gaps and corrects for the spurious trends in the data, providing a time-consistent coverage of FAPAR. We develop a fast merging method and evaluate its performance over Europe and the Horn of Africa.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland