Proceedings of the 8th Annual Meeting of Risk Analysis Council of China Association for Disaster Prevention (RAC 2018)

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Assessing Spatiotemporal Characteristics of Drought based on SPI in Mongolia Plateau

Authors
Enliang Guo, Yulong Bao, Ren Bu, Yuhai Ren, Quan Lai, Mei Yong, Yongfang Wang
Corresponding Author
Enliang Guo
Available Online October 2018.
DOI
10.2991/rac-18.2018.47How to use a DOI?
Keywords
Drought,SPI,Mutation analysis, Trend test, Mongolian Plateau
Abstract

This study is based on the SPI that was calculated from precipitation data of the TerraClimate dataset during 1958-2017, analysis of spatiotemporal characteristics of drought in Mongolia Plateau using climate trend and Pettit mutation method, the results showed that the Mongolian Plateau get significant drier trend with a rate of -0.155/decade. In spring and autumn, the trend of humidification was observed, while in summer and autumn, the trend of aridity was observed. In the summer, the SPI value showed a significant decrease with a rate of 0.2075/decade; The pixel-by-pixel analysis of the SPI trend found that the proportions of the drought-reduced trends in spring, summer, autumn and winter were 18.47%, 95.22%, 53.49%, and 4.28%, respectively. It showed a significant aridity in summer, the annual arid area of the Mongolian Plateau accounted for 90.06%; the summer SPI changed more drastically, accounting for 29.39% of the area. It is mainly located in the central and northern regions of the study area, while the change of SPI in winter is mainly located in the northeast region, accounting for 19.04%.

Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 8th Annual Meeting of Risk Analysis Council of China Association for Disaster Prevention (RAC 2018)
Series
Advances in Economics, Business and Management Research
Publication Date
October 2018
ISBN
10.2991/rac-18.2018.47
ISSN
2352-5428
DOI
10.2991/rac-18.2018.47How to use a DOI?
Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

risenwbib
TY  - CONF
AU  - Enliang Guo
AU  - Yulong Bao
AU  - Ren Bu
AU  - Yuhai Ren
AU  - Quan Lai
AU  - Mei Yong
AU  - Yongfang Wang
PY  - 2018/10
DA  - 2018/10
TI  - Assessing Spatiotemporal Characteristics of Drought based on SPI in Mongolia Plateau
BT  - Proceedings of the 8th Annual Meeting of Risk Analysis Council of China Association for Disaster Prevention (RAC 2018)
PB  - Atlantis Press
SP  - 301
EP  - 306
SN  - 2352-5428
UR  - https://doi.org/10.2991/rac-18.2018.47
DO  - 10.2991/rac-18.2018.47
ID  - Guo2018/10
ER  -