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An adapted hourly Himawari-8 fire product for China: principle, methodology and verification
Earth System Science Data ( IF 11.2 ) Pub Date : 2023-05-09 , DOI: 10.5194/essd-15-1911-2023 Jie Chen , Qiancheng Lv , Shuang Wu , Yelu Zeng , Manchun Li , Ziyue Chen , Enze Zhou , Wei Zheng , Cheng Liu , Xiao Chen , Jing Yang , Bingbo Gao
Earth System Science Data ( IF 11.2 ) Pub Date : 2023-05-09 , DOI: 10.5194/essd-15-1911-2023 Jie Chen , Qiancheng Lv , Shuang Wu , Yelu Zeng , Manchun Li , Ziyue Chen , Enze Zhou , Wei Zheng , Cheng Liu , Xiao Chen , Jing Yang , Bingbo Gao
Abstract. Wildfires exert strong influences on the environment,
ecology, economy and public security. However, the existing hourly
Himawari-8 fire product produced by the Japan Meteorological Agency (JMA)
presents large uncertainties and is not suitable for reliable real-time fire
monitoring in China. To fill this gap, the National Satellite Meteorological
Center (NSMC) proposed an adaptive hourly Himawari-8 fire product for China
based on the original Himawari-8 source by employing a dynamical threshold
for fire extraction and a database of ground thermal sources. According to
the visually extracted reference and consistency check, we found
that the NSMC-Himawari-8 fire product effectively removed a majority of false fire
alarms included in the original Himawari-8 fire product. Based on a rare
field-collected ground reference dataset, we evaluated the reliability of
original Himawari-8 and NSMC-Himawari-8 fire products across China. The
overall accuracy of the raw Himawari-8 fire product was 54 % and 59 % (not
considering the omission errors), respectively. As a comparison, by
identifying more real fire pixels and avoiding a majority of false fire
alarms, the overall accuracy of the NSMC-Himawari-8 fire product was 80 % and
84 % (not considering the omission errors), respectively, making it an
ideal source for improved real-time fire monitoring across China. This
research also provides a useful reference for employing a local dataset of
underlying surfaces and thermal sources to enhance the accuracy of global
fire products in specific regions. The NSMC-Himawari-8 fire product can be
downloaded at http://figshare.com (last access: 17 April 2023) with the
following DOI: https://doi.org/10.6084/m9.figshare.21550248 (Chen et al.,
2022a).
更新日期：2023-05-10
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