Precipitation delivery trajectories associated with extreme river flow for the Waitaki River, New Zealand
Analysis of large-scale climate conditions associated with extreme river flow is an important first step in the development of predictive relationships for such events. The potential of this approach is demonstrated here for the Waitaki River (a river of national importance in terms of electrici...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-06-01
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| Series: | Proceedings of the International Association of Hydrological Sciences |
| Online Access: | https://www.proc-iahs.net/369/19/2015/piahs-369-19-2015.pdf |
| _version_ | 1811259116816957440 |
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| author | D. G. Kingston J. McMecking |
| author_facet | D. G. Kingston J. McMecking |
| author_sort | D. G. Kingston |
| collection | DOAJ |
| description | Analysis of large-scale climate conditions associated with extreme river
flow is an important first step in the development of predictive
relationships for such events. The potential of this approach is
demonstrated here for the Waitaki River (a river of national importance in
terms of electricity generation), in the Southern Alps of New Zealand. Here,
atmospheric circulation anomalies and air parcel trajectories associated
with such events are investigated for the period 1960–2010, using the
NCEP/NCAR reanalysis and HYSPLIT trajectory model. Results show that
atmospheric circulation variation and air parcel trajectories associated
with extreme high Waitaki river flow events typically follow two distinct
patterns. These patterns are associated with differences in both New
Zealand- and hemispheric-scale atmospheric circulation, but all occur under
a similar pattern of monthly average pressure anomalies. As such, the
results indicate that different precipitation generation mechanisms are
captured by a single monthly climate anomaly pattern – providing
substantial new understanding of the cascade of processes linking
atmospheric to surface hydrological variation in the Southern Alps, and
pointing the direction for future process-informed research on sources of
predictability for Waitaki river flow. |
| first_indexed | 2024-04-12T18:25:37Z |
| format | Article |
| id | doaj.art-bf3fdd62952c41208f9550b2aac8c6f9 |
| institution | Directory Open Access Journal |
| issn | 2199-8981 2199-899X |
| language | English |
| last_indexed | 2024-04-12T18:25:37Z |
| publishDate | 2015-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Proceedings of the International Association of Hydrological Sciences |
| spelling | doaj.art-bf3fdd62952c41208f9550b2aac8c6f92022-12-22T03:21:14ZengCopernicus PublicationsProceedings of the International Association of Hydrological Sciences2199-89812199-899X2015-06-01369192410.5194/piahs-369-19-2015Precipitation delivery trajectories associated with extreme river flow for the Waitaki River, New ZealandD. G. Kingston0J. McMecking1Department of Geography, University of Otago, Dunedin, New ZealandDepartment of Geography, University of Otago, Dunedin, New ZealandAnalysis of large-scale climate conditions associated with extreme river flow is an important first step in the development of predictive relationships for such events. The potential of this approach is demonstrated here for the Waitaki River (a river of national importance in terms of electricity generation), in the Southern Alps of New Zealand. Here, atmospheric circulation anomalies and air parcel trajectories associated with such events are investigated for the period 1960–2010, using the NCEP/NCAR reanalysis and HYSPLIT trajectory model. Results show that atmospheric circulation variation and air parcel trajectories associated with extreme high Waitaki river flow events typically follow two distinct patterns. These patterns are associated with differences in both New Zealand- and hemispheric-scale atmospheric circulation, but all occur under a similar pattern of monthly average pressure anomalies. As such, the results indicate that different precipitation generation mechanisms are captured by a single monthly climate anomaly pattern – providing substantial new understanding of the cascade of processes linking atmospheric to surface hydrological variation in the Southern Alps, and pointing the direction for future process-informed research on sources of predictability for Waitaki river flow.https://www.proc-iahs.net/369/19/2015/piahs-369-19-2015.pdf |
| spellingShingle | D. G. Kingston J. McMecking Precipitation delivery trajectories associated with extreme river flow for the Waitaki River, New Zealand Proceedings of the International Association of Hydrological Sciences |
| title | Precipitation delivery trajectories associated with extreme river flow for the Waitaki River, New Zealand |
| title_full | Precipitation delivery trajectories associated with extreme river flow for the Waitaki River, New Zealand |
| title_fullStr | Precipitation delivery trajectories associated with extreme river flow for the Waitaki River, New Zealand |
| title_full_unstemmed | Precipitation delivery trajectories associated with extreme river flow for the Waitaki River, New Zealand |
| title_short | Precipitation delivery trajectories associated with extreme river flow for the Waitaki River, New Zealand |
| title_sort | precipitation delivery trajectories associated with extreme river flow for the waitaki river new zealand |
| url | https://www.proc-iahs.net/369/19/2015/piahs-369-19-2015.pdf |
| work_keys_str_mv | AT dgkingston precipitationdeliverytrajectoriesassociatedwithextremeriverflowforthewaitakirivernewzealand AT jmcmecking precipitationdeliverytrajectoriesassociatedwithextremeriverflowforthewaitakirivernewzealand |