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The impact of the Madden-Julian Oscillation on hydrological extremes

Peng, Jian ; Dadson, Simon ; Leng, Guoyong ; Duan, Zheng LU ; Jagdhuber, Thomas ; Guo, Weidong and Ludwig, Ralf (2019) In Journal of Hydrology 571. p.142-149
Abstract

Extreme climate events such as severe droughts and floods have become more frequent and widespread in the 21st Century. Recent studies have revealed the tele-connections between Madden–Julian Oscillation (MJO) and extreme precipitation over different regions such as South America, India and China. This study investigates the influence of MJO on global extreme dry and wet conditions, and how the strength of the relationship changes across the MJO phases over the globe. The Evaporative Stress Index (ESI) calculated from global GLEAM evapotranspiration dataset is used to represent extreme dry and wet conditions. Strong correlations between MJO and extreme dry and wet conditions are found, particularly over monsoon regions such as South... (More)

Extreme climate events such as severe droughts and floods have become more frequent and widespread in the 21st Century. Recent studies have revealed the tele-connections between Madden–Julian Oscillation (MJO) and extreme precipitation over different regions such as South America, India and China. This study investigates the influence of MJO on global extreme dry and wet conditions, and how the strength of the relationship changes across the MJO phases over the globe. The Evaporative Stress Index (ESI) calculated from global GLEAM evapotranspiration dataset is used to represent extreme dry and wet conditions. Strong correlations between MJO and extreme dry and wet conditions are found, particularly over monsoon regions such as South Asia, South America and East Africa. The underlying mechanism of the influence of MJO on extreme dry and wet conditions is associated with the variation of precipitation, air temperature and soil moisture modulated by the MJO. The study suggests that MJO impacts on extreme dry and wet conditions should be taken into account in investigation of droughts/floods around the world particularly over monsoon areas.

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author
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publishing date
type
Contribution to journal
publication status
published
subject
keywords
CCI soil moisture, ERA-Interim, Evaporative Stress Index, GLEAM, GPCP precipitation, Madden–Julian Oscillation
in
Journal of Hydrology
volume
571
pages
8 pages
publisher
Elsevier
external identifiers
  • scopus:85061256475
ISSN
0022-1694
DOI
10.1016/j.jhydrol.2019.01.055
language
English
LU publication?
no
id
4e23576e-2659-4a3f-a279-da8c8b7b7b2d
date added to LUP
2019-12-22 20:09:15
date last changed
2020-10-07 06:49:47
@article{4e23576e-2659-4a3f-a279-da8c8b7b7b2d,
  abstract     = {<p>Extreme climate events such as severe droughts and floods have become more frequent and widespread in the 21st Century. Recent studies have revealed the tele-connections between Madden–Julian Oscillation (MJO) and extreme precipitation over different regions such as South America, India and China. This study investigates the influence of MJO on global extreme dry and wet conditions, and how the strength of the relationship changes across the MJO phases over the globe. The Evaporative Stress Index (ESI) calculated from global GLEAM evapotranspiration dataset is used to represent extreme dry and wet conditions. Strong correlations between MJO and extreme dry and wet conditions are found, particularly over monsoon regions such as South Asia, South America and East Africa. The underlying mechanism of the influence of MJO on extreme dry and wet conditions is associated with the variation of precipitation, air temperature and soil moisture modulated by the MJO. The study suggests that MJO impacts on extreme dry and wet conditions should be taken into account in investigation of droughts/floods around the world particularly over monsoon areas.</p>},
  author       = {Peng, Jian and Dadson, Simon and Leng, Guoyong and Duan, Zheng and Jagdhuber, Thomas and Guo, Weidong and Ludwig, Ralf},
  issn         = {0022-1694},
  language     = {eng},
  month        = {04},
  pages        = {142--149},
  publisher    = {Elsevier},
  series       = {Journal of Hydrology},
  title        = {The impact of the Madden-Julian Oscillation on hydrological extremes},
  url          = {http://dx.doi.org/10.1016/j.jhydrol.2019.01.055},
  doi          = {10.1016/j.jhydrol.2019.01.055},
  volume       = {571},
  year         = {2019},
}