PRODUCTION AND FUNDAMENTAL VALIDATION OF GLOBAL SURFACE WATER MAP USING MULTIPLE MICROWAVE RADIOMETERS
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- SETO Shinta
- Graduate School of Engineering, Nagasaki University
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- MINE Hironori
- Graduate School of Engineering, Nagasaki University
抄録
<p> Information of surface water is necessary for flood disaster mitigation and the hydrological cycle studies. Normalized Differential Frequency Index (NDFI) was calculated by multiple microwave radiometers GMI and AMSR2 to produce a daily and 0.1-degree global surface water map for five years (2013–2017). Diurnal variation and bias between sensors in NDFI were adjusted. The basic performance of the surface water map was tested with global datasets. The five-year average NDFI and inundation ratio by Global Surface Water showed very high correlation around Japan. Monthly variation in NDFI and inundation ratio by Yesterday’s Earth at EORC showed positive correlation along some large river channels. NDFI showed a sudden increase at daily scale in some dry areas where daily variation in NDFI and antecedent precipitation index had positive correlation. These indicate that the increase in NDFI could be caused by inland water inundation rather than flood inundation.</p>
収録刊行物
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- Journal of JSCE
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Journal of JSCE 9 (1), 205-211, 2021
公益社団法人 土木学会
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詳細情報 詳細情報について
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- CRID
- 1390288448342922112
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- NII論文ID
- 130008054660
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- ISSN
- 21875103
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可