Performance Assessment of the Sentinel-2 LAI products and data fusion techniques for developing new LAI datasets over the high-altitude Himalayan forests

Vikas  Dugesar; Manish K  Pandey; Prashant K  Srivastava; George P.  Petropoulos; Sanjeev Kumar Srivastava; Virendra Kumar  Kumra

doi:10.1080/10106049.2023.2247380

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Performance Assessment of the Sentinel-2 LAI products and data fusion techniques for developing new LAI datasets over the high-altitude Himalayan forests

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Performance Assessment of the Sentinel-2 LAI products and data fusion techniques for developing new LAI datasets over the high-altitude Himalayan forests

Vikas Dugesar, Manish K Pandey, Prashant K Srivastava, George P. Petropoulos, Sanjeev Kumar Srivastava and Virendra Kumar Kumra

Geocarto International, Vol.38(1), pp.1-20

2023

DOI: https://doi.org/10.1080/10106049.2023.2247380

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Abstract

Leaf Area Index

Data fusion

SNAP

Himalayan Forest

The present study evaluates the accuracy of SNAP- Sentinel-2 Prototype Processor (SL2P) derived Leaf Area Index (LAI) and proposes a new simple method to generate new datasets of LAI through data fusion. Rigorous optimization of the data fusion approaches (Kalman filter and Linear weighted) was performed for generation of new LAI products over complex hilly terrain of Himalayan region. The results showed a good correlation (r = 0.79) and low error (RMSE = 1.63) between SNAP-derived (at 20m) and ground-observed LAI. A lower correlation was obtained between the ground observed LAI data and the corresponding global LAI products for the Moderate Resolution Imaging Spectroradiometer (MODIS) (r= 0.1, RMSE= 1.19), Copernicus Global Land Service (CGLS) (r= 0.1, RMSE= 0.61) and the Visible Infrared Imaging Radiometer Suite (VIIRS) (r= 0.04, RMSE= 1.25). Notably, after implementing the data fusion, both SNAP-derived LAI and Global LAI products exhibited a much-improved performance statistics with ground observed data sets.

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Title: Performance Assessment of the Sentinel-2 LAI products and data fusion techniques for developing new LAI datasets over the high-altitude Himalayan forests
Authors: Vikas Dugesar (Author) - Banaras Hindu University
Manish K Pandey (Author) - Banaras Hindu University
Prashant K Srivastava (Corresponding Author) - Banaras Hindu University
George P. Petropoulos (Author) - Harokopio University of Athens
Sanjeev Kumar Srivastava (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Virendra Kumar Kumra (Author) - Banaras Hindu University
Publication details: Geocarto International, Vol.38(1), pp.1-20
Publisher: Taylor & Francis
Date published: 2023
DOI: 10.1080/10106049.2023.2247380
ISSN: 1752-0762; 1010-6049
Organisation Unit: University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Sustainability Research Cluster
Language: English
Record Identifier: 99745898302621
Output Type: Journal article

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