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Observing carbon monoxide and volatile organic compounds from Canadian wildfires in 2023 from FengYun-3E/HIRAS-II in a dawn-dusk sunsynchronous orbit
  • +13
  • Jiancong Hua,
  • Shangyi Liu,
  • Chengli Qi,
  • Sirui Wu,
  • Lu Lee,
  • Xiuqing Hu,
  • Xiaoyi Zhao,
  • Kimberly Strong,
  • Victoria Flood,
  • Bruno Franco,
  • Lieven Clarisse,
  • Cathy Clerbaux,
  • Debra Wunch,
  • Coleen Roehl,
  • Paul Wennberg,
  • Zhao-Cheng Zeng
Jiancong Hua
School of Earth and Space Sciences, Peking University
Author Profile
Shangyi Liu
School of Earth and Space Sciences, Peking University
Chengli Qi
Innovation Center for FengYun Meteorological Satellite, Meteorological Administration, Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, National Satellite Meteorological Center
Sirui Wu
School of Earth and Space Sciences, Peking University, School of Computer Science & Technology, Beijing Institute of Technology
Lu Lee
Innovation Center for FengYun Meteorological Satellite, Meteorological Administration, Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, National Satellite Meteorological Center
Xiuqing Hu
Innovation Center for FengYun Meteorological Satellite, Meteorological Administration, Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, National Satellite Meteorological Center
Xiaoyi Zhao
Air Quality Research Division, Environment and Climate Change Canada
Kimberly Strong
Department of Physics, University of Toronto
Victoria Flood
Department of Physics, University of Toronto
Bruno Franco
Quantum Chemistry and Atmospheric Remote Sensing, Université Libre de Bruxelles (ULB)
Lieven Clarisse
LATMOS/IPSL, Sorbonne Université, UVSQ, CNRS
Cathy Clerbaux
Quantum Chemistry and Atmospheric Remote Sensing, Université Libre de Bruxelles (ULB), LATMOS/IPSL, Sorbonne Université, UVSQ, CNRS
Debra Wunch
Department of Physics, University of Toronto
Coleen Roehl
Division of Geological and Planetary Sciences, California Institute of Technology
Paul Wennberg
Division of Geological and Planetary Sciences, California Institute of Technology
Zhao-Cheng Zeng
School of Earth and Space Sciences, Peking University

Corresponding Author:

Abstract

This study presents the first attempt to observe wildfire enhancements of carbon monoxide (CO) and volatile organic compounds (VOCs) around sunrise and sunset from a hyperspectral infrared sounder in a dawn-dusk sun-synchronous orbit. The 2 nd generation of High Spectral Infrared Atmospheric Sounder (HIRAS-II) on board FengYun-3E (FY-3E), the world's first civilian dawn-dusk orbit meteorological satellite, provides global observations in the thermal infrared spectral range with equatorial overpass times of 5:30am/pm local solar time (LST). The spectral observations are used to retrieve CO, formic acid (HCOOH) and peroxyacetyl nitrate (PAN) emitted from three major Canadian wildfire events from June to August 2023. Extreme enhancements of CO, HCOOH and PAN were detected in the 2023 Canadian wildfires which are unprecedented in time and spatial scales and intensity. The HIRAS-II successfully captured the strong signals of CO, HCOOH, and PAN. The averaging kernel (AK) matrix, indicative of detection vertical sensitivity, peaks mostly in the free troposphere where extensive transport typically takes place. Comparison with the Infrared Atmospheric Sounding Interferometer (IASI) reveals that the spatial distribution patterns of the total columns extracted from HIRAS-II are in good agreement. Validation with the CAMS model and ground-based observations from TCCON and NDACC confirms that HIRAS-II retrievals are consistent. The HCOOH-to-CO and the PAN-to-CO column enhancement ratios derived from HIRAS-II are close to those derived from IASI. This paper exhibits the capability of FY-3E/HIRAS-II in observing wildfire emissions during dawn and dusk hours, which will potentially enhance the climatemonitoring capability of low-orbit meteorological satellites.
18 Sep 2024Submitted to ESS Open Archive
19 Sep 2024Published in ESS Open Archive