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Water 2019, 11(1), 74; https://doi.org/10.3390/w11010074

Evaluation of Extreme Cold and Drought over the Mongolian Plateau

1
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
2
Institute of Geography, Mongolian Academy of Sciences, Ulaanbaatar 210620, Mongolia
*
Authors to whom correspondence should be addressed.
Received: 30 November 2018 / Revised: 25 December 2018 / Accepted: 27 December 2018 / Published: 4 January 2019
(This article belongs to the Section Hydrology)
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Abstract

Extreme cold and meteorological drought in the Mongolian Plateau (MP) were investigated during 1969–2017. Several drought indices were evaluated by analyzing recorded historical drought data in the Chinese region of the MP. The evaluated drought indices were then applied to detect drought characteristics in the entire MP. The trends of extreme cold indices showed that the climate of the MP has warmed during the past 49 years; however, the frequency of cold day/night has increased in the Mongolian region. The climate of Mongolia has also become colder in the spring season. The comprehensive meteorological drought index (CMDI) and the standardized precipitation index with a six-month scale (SPI6) exhibited better performances, showing high consistency between the spatial patterns of the two indices. However, drought represented by the SPI6 was enhanced greater than that expressed by the CMDI. Drought in the MP has been enhanced during the past 49 years, particularly in the Ordos and Alashan plateaus and the Xiliao River basin in China. Moreover, drought has been enhanced from August to October, particularly in the Mongolian region. However, spring drought has shown a weakening trend, which has been beneficial for agriculture and husbandry sectors in some regions of the MP. View Full-Text
Keywords: extreme climate; meteorological drought; comprehensive meteorological drought index (CMDI); standardized precipitation index (SPI); empirical orthogonal function (EOF); Mann–Kendall test extreme climate; meteorological drought; comprehensive meteorological drought index (CMDI); standardized precipitation index (SPI); empirical orthogonal function (EOF); Mann–Kendall test
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Liu, Z.; Yao, Z.; Huang, H.; Batjav, B.; Wang, R. Evaluation of Extreme Cold and Drought over the Mongolian Plateau. Water 2019, 11, 74.

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