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Uncertainty for Burnt Area Products

Brennan, J; Gomez-Dans, J; Lewis, P; Chernetskiy, M; Heil, A; (2018) Uncertainty for Burnt Area Products. In: IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium. (pp. pp. 1808-1811). IEEE: Valencia, Spain. Green open access

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Abstract

Burnt area (BA) products are usually provided as a binary mask, indicating whether within a particular time interval, a pixel has or has not burnt. However, this is an inference derived from assessing e.g. the change in reflectance due to the fire. These calculations are prone to uncertainty from a number of sources: thermal noise in the sensor, residual atmospheric correction shortcomings or insufficient temporal sampling, etc. In this contribution, we aim to provide a framework for uncertainty characterisation of BA products. The uncertainty framework is Bayesian in nature, and provides a way to propagate uncertainty from the observations, across scales, but also allows one to propagate uncertainty in algorithm parameterisation. We illustrate the framework with a simple example based on logistic regression. Finally, we discuss how the uncertainty at the pixel level can be aggregated to the climate modeller grid (CMG), providing a consistent way to treat uncertainty from the observations and algorithm parameters to the final products

Type: Proceedings paper
Title: Uncertainty for Burnt Area Products
Event: 38th IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Location: Valencia, SPAIN
Dates: 22 July 2018 - 27 July 2018
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/IGARSS.2018.8518257
Publisher version: https://doi.org/10.1109/IGARSS.2018.8518257
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Uncertainty, Burnt Area, ECV
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Geography
URI: https://discovery.ucl.ac.uk/id/eprint/10073164
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