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Research Article
The Impact of Atmospheric Rivers on Rainfall in New Zealand
Jingxiang Shu
University of Auckland
Corresponding Author
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This work is licensed under a CC BY 4.0 License. Read Full License
This study quantifies the impact of atmospheric rivers (ARs) on rainfall in New Zealand. Using daily rainfall records from 654 rain gauges and the ERA-Interim and ERA-5 reanalysis, we investigate the contribution of ARs to the annual and seasonal rainfall totals and extreme rainfall events between 1979–2018 across the country. Results indicate that these filamentary synoptic features play an essential role in regional water resources and are responsible for many extreme rainfall events on the western side of mountainous areas and northern New Zealand. Depending on the season in these areas, 40–86% of the rainfall totals and 50–98% of extreme rainfall events are shown to be associated with ARs, with the largest contributions predominantly occurring during the summer. Furthermore, the median daily rainfall associated with ARs is 2–3 times that associated with other storms. The results of this study extend the knowledge of the critical roles of ARs on hydrology and highlight the need for further investigation of the hydrological hazards caused by ARs in New Zealand.
Keywords
Atmospheric Rivers, hydrology, seasonal rainfall
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On 05 Jan, 2021
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On 05 Jan, 2021
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On 05 Jan, 2021
Reviewer #9 agreed
On 05 Jan, 2021
Reviewer #5 agreed
On 05 Jan, 2021
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This preprint is under consideration at Scientific Reports. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
The Impact of Atmospheric Rivers on Rainfall in New Zealand
Jingxiang Shu
University of Auckland
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 1
Posted 06 Jan, 2021
No community comments so far
Review #5 received
Received 08 Jan, 2021
Review #3 received
Received 08 Jan, 2021
Review #1 received
Received 08 Jan, 2021
Review #2 received
Received 08 Jan, 2021
Review #4 received
Received 08 Jan, 2021
Reviewer #3 agreed
On 05 Jan, 2021
Reviewer #10 agreed
On 05 Jan, 2021
Reviewer #8 agreed
On 05 Jan, 2021
Reviewer #2 agreed
On 05 Jan, 2021
Reviewer #6 agreed
On 05 Jan, 2021
Reviewer #7 agreed
On 05 Jan, 2021
Reviewer #4 agreed
On 05 Jan, 2021
Reviewer #9 agreed
On 05 Jan, 2021
Reviewer #5 agreed
On 05 Jan, 2021
Reviewer #1 agreed
On 05 Jan, 2021
Reviewers invited
Invitations sent on 05 Jan, 2021
Editor assigned
On 05 Jan, 2021
Editor invited
On 05 Jan, 2021
Submission checks complete
On 04 Jan, 2021
First submitted
On 16 Dec, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Civil Engineering
License:
This work is licensed under a CC BY 4.0 License. Read Full License
This study quantifies the impact of atmospheric rivers (ARs) on rainfall in New Zealand. Using daily rainfall records from 654 rain gauges and the ERA-Interim and ERA-5 reanalysis, we investigate the contribution of ARs to the annual and seasonal rainfall totals and extreme rainfall events between 1979–2018 across the country. Results indicate that these filamentary synoptic features play an essential role in regional water resources and are responsible for many extreme rainfall events on the western side of mountainous areas and northern New Zealand. Depending on the season in these areas, 40–86% of the rainfall totals and 50–98% of extreme rainfall events are shown to be associated with ARs, with the largest contributions predominantly occurring during the summer. Furthermore, the median daily rainfall associated with ARs is 2–3 times that associated with other storms. The results of this study extend the knowledge of the critical roles of ARs on hydrology and highlight the need for further investigation of the hydrological hazards caused by ARs in New Zealand.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6