Satellite active fire data validation using drones:

protocols and initial results from prescribed fires in Brazil

Autores/as

  • Wilfrid Schroeder NOAA/NESDIS, USA
  • Fabiano Morelli Instituto Nacional de Pesquisas Espaciais (INPE),Programa Queimadas, São José dos Campos-SP, Brazil
  • Heber Passos Instituto Nacional de Pesquisas Espaciais (INPE),Programa Queimadas, São José dos Campos-SP, Brazil
  • Joana Nogueira Instituto Nacional de Pesquisas Espaciais (INPE),Programa Queimadas, São José dos Campos-SP, Brazil
  • Renata Libonati Universidade Federal do Rio de Janeiro, Instituto de Geociências, Departmento de Meteorologia, Brazil
  • Paulo Victorino Instituto Nacional de Pesquisas Espaciais (INPE),Programa Queimadas, São José dos Campos-SP, Brazil
  • André Lima University of Maryland, USA
  • Guilherme Martins Instituto Nacional de Pesquisas Espaciais (INPE),Programa Queimadas, São José dos Campos-SP, Brazil
  • Marcelo Romão Instituto Nacional de Pesquisas Espaciais (INPE),Programa Queimadas, São José dos Campos-SP, Brazil
  • João Neves Silva Centro de Estudos Florestais, Universidade de Lisboa, Lisboa, Portugal
  • Duarte Oom Centro de Estudos Florestais, Universidade de Lisboa, Lisboa, Portugal
  • Leonardo Peres Universidade Federal do Rio de Janeiro, Instituto de Geociências, Departmento de Meteorologia, Brazil
  • Filippe Lemos Universidade Federal do Rio de Janeiro, Instituto de Geociências, Departmento de Meteorologia, Brazil
  • Alberto Setzer Instituto Nacional de Pesquisas Espaciais (INPE),Programa Queimadas, São José dos Campos-SP, Brazil,

DOI:

https://doi.org/10.37002/biodiversidadebrasileira.v9i1.1175

Palabras clave:

Active fires, remote sensing, drones, prescribed fires

Resumen

Global biomass burning impacts millions of hectares annually resulting in high social, environmental and economic costs. Satellite-based active fire detection products provide key information in support of land management and science applications and are available routinely from a variety of sources. Data validation is an important aspect guiding product development and characterization and is addressed in this study with the use of miniaturized sensors paired to unmanned airborne vehicles, or drones. Specifically, we deployed a custommade broadband spectral radiometer along with a commercial off-the-shelf infrared camera (FLIR Zenmuse XT) mounted to small consumer drones (DJI's Phantom3 and Inspire) flown over small prescribed burns implemented so as to coincide with the overpass times of different earth observing satellites (e.g., NASA Terra & Aqua, NOAA/NASA S-NPP, USGS Landsat-8, and ESA Sentinel-2). Near-simultaneous fire radiative power retrievals were obtained using the airborne and spaceborne data acquired during prescribed fires conducted in grasslands and savannas plots in the Brazilian states of Rio de Janeiro, Tocantins and Mato Grosso do Sul between July 2017 and September 2018. A set of standard operating procedures were defined with attention to satellite active fire data validation requirements (e.g., reference data calibration) and subsequently adopted for each of the fires sampled. Airborne and spaceborne observations were co-located and temporally paired to within 2sec, and path transmittances calculated in order to account for atmospheric attenuation of fire retrievals. Our results showed good agreement (differences as low as 5%) between drone and satellite-based fire retrievals while also serving to demonstrate the potential for fully reproducible satellite data validation protocols using small sensor and drone technologies.

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Publicado

2019-05-15

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