Atmospheric rivers in the Australia-Asian region: a BoM–CMA collaborative study

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dc.contributor.author

Ye, Chengzhi

Zhang, Huqiang

Moise, Aurel

Mo, Ruping

dc.date.accepted

2019-08-28

dc.date.accessioned

2023-11-17T15:11:39Z

dc.date.available

2023-11-17T15:11:39Z

dc.date.issued

2020-08-28

dc.date.submitted

2019-03-29

dc.description.abstract - en

The name ‘atmospheric river’ (AR) could easily be misinterpreted to mean rivers flowing in the sky. But, ARs actually refer to narrow bands of strong horizontal water vapour transport that are concentrated in the lower troposphere. These bands are called ‘atmospheric rivers’ because the water vapour flux they carry is close to the volume of water carried by big river systems on the ground. ARs can cause heavy rainfall events if some physical mechanisms, such as orographic enhancement, exist to set up the moisture convergence and vertical motions necessary to produce condensation. In recent decades, these significant moisture plumes have attracted increasing attention from scientific communities, especially in North America and western Europe, to further understand the connections between ARs and extreme precipitation events which can trigger severe natural disasters such as floods, mudslides and avalanches. Yet very limited research has been conducted in the Australia-Asian (A-A) region, where the important role of atmospheric moisture transport has long been recognised for its rainfall generation and variations. In this paper, we introduce a collaborative project between the Australian Bureau of Meteorology and China Meteorological Administration, which was set up to explore the detailed AR characteristics of atmospheric moisture transport embedded in the A-A monsoon system. The project in China focused on using AR analysis to explore connections between moisture transport and extreme rainfall mainly during the boreal summer monsoon season. In Australia, AR analysis was used to understand the connections between the river-like Northwest Cloud Band and rainfall in the region. Results from this project demonstrate the potential benefits of applying AR analysis to better understand the role of tropical moisture transport in rainfall generation in the extratropics, thus achieve better rainfall forecast skills at NWP (Numerical Weather Prediction), sub-seasonal and seasonal time scales. We also discuss future directions of this collaborative research, including further assessing potential changes in ARs under global warming.

dc.identifier.doi

https://doi.org/10.1071/ES19025

dc.identifier.issn

2206-5865

dc.identifier.uri

https://open-science.canada.ca/handle/123456789/1296

dc.language.iso

en

dc.publisher

CSIRO Publishing

dc.rights - en

Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)

dc.rights - fr

Creative Commons Attribution - Pas d'utilisation commerciale - Pas de modification 4.0 International (CC BY-NC-ND 4.0)

dc.rights.openaccesslevel - en

Gold

dc.rights.openaccesslevel - fr

Or

dc.rights.uri - en

https://creativecommons.org/licenses/by-nc-nd/4.0/

dc.rights.uri - fr

https://creativecommons.org/licenses/by-nc-nd/4.0/deed.fr

dc.subject - en

Nature and environment

Science and technology

Climate

dc.subject - fr

Nature et environnement

Sciences et technologie

Climat

dc.subject.en - en

Nature and environment

Science and technology

Climate

dc.subject.fr - fr

Nature et environnement

Sciences et technologie

Climat

dc.title - en

Atmospheric rivers in the Australia-Asian region: a BoM–CMA collaborative study

dc.type - en

Article

dc.type - fr

Article

local.article.journalissue

1

local.article.journaltitle

Journal of Southern Hemisphere Earth Systems Science

local.article.journalvolume

70

local.pagination

3-16

local.peerreview - en

Yes

local.peerreview - fr

Oui

local.requestdoi

No

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