Size-dependent validation of MODIS MCD64A1 burned area over six vegetation types in boreal Eurasia: Large underestimation in croplands

Abstract Pollutants emitted from wildfires in boreal Eurasia can be transported to the Arctic, and their subsequent deposition could accelerate global warming. The Moderate Resolution Imaging Spectroradiometer (MODIS) MCD64A1 burned area product is the basis of fire emission products. However, uncer...

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Autores principales:	Chunmao Zhu, Hideki Kobayashi, Yugo Kanaya, Masahiko Saito
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c0e4085b662e49ac9dd3384c848b3a7b
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spelling	oai:doaj.org-article:c0e4085b662e49ac9dd3384c848b3a7b2021-12-02T12:32:08ZSize-dependent validation of MODIS MCD64A1 burned area over six vegetation types in boreal Eurasia: Large underestimation in croplands10.1038/s41598-017-03739-02045-2322https://doaj.org/article/c0e4085b662e49ac9dd3384c848b3a7b2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03739-0https://doaj.org/toc/2045-2322Abstract Pollutants emitted from wildfires in boreal Eurasia can be transported to the Arctic, and their subsequent deposition could accelerate global warming. The Moderate Resolution Imaging Spectroradiometer (MODIS) MCD64A1 burned area product is the basis of fire emission products. However, uncertainties due to the “moderate resolution” (500 m) characteristic of the MODIS sensor could be introduced. Here, we present a size-dependent validation of MCD64A1 with reference to higher resolution (better than 30 m) satellite products (Landsat 7 ETM+, RapidEye, WorldView-2, and GeoEye-1) for six ecotypes over 12 regions of boreal Eurasia. We considered the 2012 boreal Eurasia burning season when severe wildfires occurred and when Arctic sea ice extent was historically low. Among the six ecotypes, we found MCD64A1 burned areas comprised only 13% of the reference products in croplands because of inadequate detection of small fires (<100 ha). Our results indicate that over all ecotypes, the actual burned area in boreal Eurasia (15,256 km2) could have been ~16% greater than suggested by MCD64A1 (13,187 km2) when applying the correction factors proposed in this study. This implies the effects of wildfire emissions in boreal Eurasia on Arctic warming could be greater than currently estimated.Chunmao ZhuHideki KobayashiYugo KanayaMasahiko SaitoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chunmao Zhu Hideki Kobayashi Yugo Kanaya Masahiko Saito Size-dependent validation of MODIS MCD64A1 burned area over six vegetation types in boreal Eurasia: Large underestimation in croplands
description	Abstract Pollutants emitted from wildfires in boreal Eurasia can be transported to the Arctic, and their subsequent deposition could accelerate global warming. The Moderate Resolution Imaging Spectroradiometer (MODIS) MCD64A1 burned area product is the basis of fire emission products. However, uncertainties due to the “moderate resolution” (500 m) characteristic of the MODIS sensor could be introduced. Here, we present a size-dependent validation of MCD64A1 with reference to higher resolution (better than 30 m) satellite products (Landsat 7 ETM+, RapidEye, WorldView-2, and GeoEye-1) for six ecotypes over 12 regions of boreal Eurasia. We considered the 2012 boreal Eurasia burning season when severe wildfires occurred and when Arctic sea ice extent was historically low. Among the six ecotypes, we found MCD64A1 burned areas comprised only 13% of the reference products in croplands because of inadequate detection of small fires (<100 ha). Our results indicate that over all ecotypes, the actual burned area in boreal Eurasia (15,256 km2) could have been ~16% greater than suggested by MCD64A1 (13,187 km2) when applying the correction factors proposed in this study. This implies the effects of wildfire emissions in boreal Eurasia on Arctic warming could be greater than currently estimated.
format	article
author	Chunmao Zhu Hideki Kobayashi Yugo Kanaya Masahiko Saito
author_facet	Chunmao Zhu Hideki Kobayashi Yugo Kanaya Masahiko Saito
author_sort	Chunmao Zhu
title	Size-dependent validation of MODIS MCD64A1 burned area over six vegetation types in boreal Eurasia: Large underestimation in croplands
title_short	Size-dependent validation of MODIS MCD64A1 burned area over six vegetation types in boreal Eurasia: Large underestimation in croplands
title_full	Size-dependent validation of MODIS MCD64A1 burned area over six vegetation types in boreal Eurasia: Large underestimation in croplands
title_fullStr	Size-dependent validation of MODIS MCD64A1 burned area over six vegetation types in boreal Eurasia: Large underestimation in croplands
title_full_unstemmed	Size-dependent validation of MODIS MCD64A1 burned area over six vegetation types in boreal Eurasia: Large underestimation in croplands
title_sort	size-dependent validation of modis mcd64a1 burned area over six vegetation types in boreal eurasia: large underestimation in croplands
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/c0e4085b662e49ac9dd3384c848b3a7b
work_keys_str_mv	AT chunmaozhu sizedependentvalidationofmodismcd64a1burnedareaoversixvegetationtypesinborealeurasialargeunderestimationincroplands AT hidekikobayashi sizedependentvalidationofmodismcd64a1burnedareaoversixvegetationtypesinborealeurasialargeunderestimationincroplands AT yugokanaya sizedependentvalidationofmodismcd64a1burnedareaoversixvegetationtypesinborealeurasialargeunderestimationincroplands AT masahikosaito sizedependentvalidationofmodismcd64a1burnedareaoversixvegetationtypesinborealeurasialargeunderestimationincroplands
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Size-dependent validation of MODIS MCD64A1 burned area over six vegetation types in boreal Eurasia: Large underestimation in croplands

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