Monitoring results of 2013 and 2014 transboundary Asian dust events in Japan using modis dust indices

Izumi Nagatani, Jun Ichi Kudoh

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)

Abstract

Asian dust event is a weather phenomenon in spring time in Japan. The mineral dusts occurred by strong wind in Gobi deserts are frequently transported over the Japan Sea. These airborne dust become causes of respiratory disease, transportation disturbances, and other disruptions in social activities. Remote sensing technology is useful for detecting and monitoring the Asian dust distributions and movements. Aiming to understand the Asian dust events, we have developed a methodology for detecting transboundary Asian dust events using two MODIS indices, Brightness Temperature Difference (BTD) and Normalized Difference Dust Index (NDDI). In this paper, we propose a new index Normalized Dust Layer Index (NDLI) which is a composite index of the BTD and NDDI and demonstrate a time series analysis of 2013 and 2014 Asian dust events using NDLI products. We found that from their bar-chart analysis of the number of dust pixels, the 2014 dust events were relatively calmer than the 2013 dust events. The proposed index NDLI was useful for a time series analysis of dust events.

Original languageEnglish
Publication statusPublished - 2014 Jan 1
Event35th Asian Conference on Remote Sensing 2014: Sensing for Reintegration of Societies, ACRS 2014 - Nay Pyi Taw, Myanmar
Duration: 2014 Oct 272014 Oct 31

Other

Other35th Asian Conference on Remote Sensing 2014: Sensing for Reintegration of Societies, ACRS 2014
CountryMyanmar
CityNay Pyi Taw
Period14/10/2714/10/31

Keywords

  • BTD
  • Dust detection
  • MODIS
  • NDDI
  • NDLI

ASJC Scopus subject areas

  • Computer Networks and Communications

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