Reconciling polar and geostationary FRP time series using geometric and atmospheric corrections
Abstract
Fire radiative power (FRP) is a quantitative measure of fire activity that can be observed from space. However, space-based observations have a variety of artifacts that obscure the true variation in fire behavior on the ground. The most significant of these artifacts is the lower limit of sensitivity, but atmospheric attenuation of the fire signal is also significant. Both of these effects are modulated by the geometry of satellite observation, resulting in large temporal artifacts in data from polar-orbiting satellites and spatial artifacts in FRP data from all wide-area satellite observations. We apply a method developed at the Naval Research Lab for correcting atmospheric effects and normalizing for the detection limit, which can be applied to both polar and geostationary sensors. We examine the impacts of these corrections on time series of FRP in temperate and boreal ecosystems. We discuss the discrepancies between FRP time series from different sensors that remain after correction, and the potential of these methods to improve both single-sensor and multi-sensor fire monitoring applications.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2021
- Bibcode:
- 2021AGUFM.A55S1686H