Academic Journal
An adapted hourly Himawari-8 fire product for China: principle, methodology and verification
| Title: | An adapted hourly Himawari-8 fire product for China: principle, methodology and verification |
|---|---|
| Authors: | J. Chen, Q. Lv, S. Wu, Y. Zeng, M. Li, Z. Chen, E. Zhou, W. Zheng, C. Liu, X. Chen, J. Yang, B. Gao |
| Source: | Earth System Science Data, Vol 15, Pp 1911-1931 (2023) |
| Publisher Information: | Copernicus Publications, 2023. |
| Publication Year: | 2023 |
| Collection: | LCC:Environmental sciences LCC:Geology |
| Subject Terms: | Environmental sciences, GE1-350, Geology, QE1-996.5 |
| More Details: | 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). |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 1866-3508 1866-3516 |
| Relation: | https://essd.copernicus.org/articles/15/1911/2023/essd-15-1911-2023.pdf; https://doaj.org/toc/1866-3508; https://doaj.org/toc/1866-3516 |
| DOI: | 10.5194/essd-15-1911-2023 |
| Access URL: | https://doaj.org/article/56132731544e465ba3221d0f0659cd80 |
| Accession Number: | edsdoj.56132731544e465ba3221d0f0659cd80 |
| Database: | Directory of Open Access Journals |
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| ISSN: | 18663508 18663516 |
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| DOI: | 10.5194/essd-15-1911-2023 |
| Published in: | Earth System Science Data |
| Language: | English |