[M-AG32] Satellite Land Physical Processes Monitoring at Medium/High/Very High Resolution

[MAG32-02] Multi-resolution fire monitoring of the 2023 Maui wildfires

★Invited Papers

*David Roy¹、Hugo De Lemos ²、Haiyan Huang ²、Louis Giglio ³、Rasmus Houborg ⁴、Tomoaki Miura ⁵ (1.Center for Global Change and Earth Observations & Department of Geography, Michigan State University, East Lansing, MI 48824, USA、2.Center for Global Change and Earth Observations, Michigan State University, East Lansing, MI 48824, USA、3.Department of Geographical Sciences, University of Maryland, College Park, MD 20742, USA、4.Planet Labs PBC, San Francisco, CA 94107, USA、5.Department of Natural Resources and Environmental Management, College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa, HI 96822, USA)

キーワード：Maui fire disaster, burned area mapping, active fire detection, fire radiative power

The August 2023 wildfires over the island of Maui, Hawaii were one of the deadliest U.S. wildfire incidents on record with 100 deaths and an estimated U.S. $5.5 billion cost. This presentation documents the incidence, extent, and characteristics of the 2023 Maui wildfires using multi-resolution global satellite fire products, and in so doing demonstrates their utility and limitations for detailed fire monitoring, and highlights outstanding satellite fire observation needs. We present PlanetScope 3 m burned areas mapped across Maui using a published deep learning algorithm and compare the mapped results with the NASA 500 m Moderate Resolution Imaging Spectroradiometer (MODIS) burned area product. In addition, all the August 2023 active fire detections provided by MODIS on the Terra and Aqua satellites and by the Visible Infrared Imaging Radiometer Suite (VIIRS) on the S-NPP and NOAA-20 satellites are used to investigate the geographic and temporal occurrence of the fires and their incidence relative to the 3 m mapped burned areas. The geographic and diurnal variation on the fire radiative power (FRP), available with the active fire detections, is presented to show how energetically the fires were burning. The analysis is undertaken for all of Maui and for the town of Lahaina that was the major population center that burned. The utility of the different data sets for fire monitoring at local scale, and the needs for future fire monitoring of wildfire events such as those experienced over Maui, are discussed.