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Remote Sensing for Monitoring Natural Hazards and Impact of Climate Change

A special issue of Remote Sensing (ISSN 2072-4292). This special issue belongs to the section "Environmental Remote Sensing".

Deadline for manuscript submissions: closed (31 August 2020) | Viewed by 5150

Special Issue Editor


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Guest Editor
NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Interests: climate change; interannual-variability; natural hazards, aerosols; black carbon; remote sensing; land-atmosphere interaction

Special Issue Information

Dear Colleagues,

We are glad to announce a special issue of Remote Sensing, focussing on “Monitoring Natural Hazards and Impact of Climate Change”. This is a highly relevant topic for the current time when we are seeing an ever-increasing number of different natural hazards, threatening human life and property. According to an estimate by NOAA (https://www.ncdc.noaa.gov/billions/) of all billion-dollar disasters affecting the US since 1980, almost 50% of the total loss and 52% of total events, has been incurred in the last decade alone. Globally, the numbers are even more staggering, with one study (Leaning and Guha-Sapir, The New England Journal of Medicine) estimating that the number of natural disasters between 2000 to 2009 was three times more compared to that between 1980 to 1989, 80% of which was caused by climate-related events. 

It is becoming increasingly clear that climate change has a large role to play in this. Increased greenhouse gas emissions and rising temperatures have multiple ramifications in terms of increased drought events and more severe storms and cyclones. Human-induced pollutants such as black carbon, aerosols, etc can drastically alter the global radiation balance resulting in changing monsoon cycles and increased risk of cataclysmic flood events. The consequences are many and perilous. Hence, there is a need to document recent advances made in better monitoring of different natural hazards and demonstrate the clear impact of climate change. We hope to get your support in compiling this special issue and making a key contribution in this regard. 

Dr. Sudipta Sarkar
Guest Editor

Manuscript Submission Information

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Keywords

  • natural hazards
  • climate change
  • interannual-variability
  • monitoring
  • anthropogenic impact
  • long-term trends

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Published Papers (1 paper)

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Research

22 pages, 10690 KiB  
Article
Trends in Long-Term Drought Changes in the Mekong River Delta of Vietnam
by Vu Hien Phan, Vi Tung Dinh and Zhongbo Su
Remote Sens. 2020, 12(18), 2974; https://doi.org/10.3390/rs12182974 - 12 Sep 2020
Cited by 18 | Viewed by 4811
Abstract
In recent years, short droughts in the dry season have occurred more frequently and caused serious damages to agriculture and human living in the Mekong River Delta of Vietnam (MRD). The paper attempts to quantify the trends of drought changes in the dry [...] Read more.
In recent years, short droughts in the dry season have occurred more frequently and caused serious damages to agriculture and human living in the Mekong River Delta of Vietnam (MRD). The paper attempts to quantify the trends of drought changes in the dry seasons from 2001 to 2015 in the region, using daily MODIS MOD09GQ and MOD11A1 data products. Here, we exploit the Temperature Vegetation Dryness Index (TVDI) to assess levels of droughts. For each image-acquisition time, the TVDI image is computed, based on the Normalized Difference Vegetation Index (NDVI), derived from red and near infrared reflectance data, and the Land Surface Temperature (LST), derived from thermal infrared data. Subsequently, a spatiotemporal pattern of drought changes is estimated, based on mean TVDI values of the dry seasons during the observed period, by a linear regression. As a result, the state of drought in the dry seasons in the MRD has mostly been at light and moderate levels, occupying approximately 62% and 34% of the total area. Several sub-areas in the center have an increased trend of drought change, occupying approximately 12.5% of the total area, because impervious surface areas increase, e.g., the obvious land use change, from forest land and land for cultivation for perennial trees being strongly converted to built-up land for residence and public transportation. Meanwhile, several sub-areas in the coastal regions have a negative trend of drought change because water and absorbent surface areas increase, e.g., most of land for cultivation for perennial trees has been converted to aquaculture land. These cases usually occur in and surrounding forest and wet land, also occupying approximately 12.5% of the total area. Full article
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