The Role of Atmospheric Rivers for Extreme Ablation and Snowfall Events in the Southern Alps of New Zealand

2019 ◽  
Vol 46 (5) ◽  
pp. 2761-2771 ◽  
Author(s):  
K. Little ◽  
D. G. Kingston ◽  
N. J. Cullen ◽  
P. B. Gibson
Keyword(s):  
New Zealand ◽  
Southern Alps ◽  
Atmospheric Rivers

scholarly journals Floods in the Southern Alps of New Zealand: the importance of atmospheric rivers

2016 ◽  
Vol 30 (26) ◽  
pp. 5063-5070 ◽  
Author(s):  
Daniel. G. Kingston ◽  
David A. Lavers ◽  
David M. Hannah
Keyword(s):  
New Zealand ◽  
Southern Alps ◽  
Atmospheric Rivers

scholarly journals The role of Atmospheric rivers on monthly water availability and floods in New Zealand

2021 ◽  
Author(s):  
Jingxiang Shu ◽  
Asaad Y. Shamseldin ◽  
Evan Weller ◽  
Bruce W. Melville
Keyword(s):  
New Zealand ◽  
Water Availability ◽  
Atmospheric Rivers

Moisture transport during large snowfall events in the New Zealand Southern Alps: The role of atmospheric rivers

2020 ◽  
Author(s):  
Rasool Porhemmat ◽  
Heather Purdie ◽  
Peyman Zawar-Reza ◽  
Christian Zammit ◽  
Tim Kerr
Keyword(s):  
New Zealand ◽  
Moisture Transport ◽  
Reanalysis Data ◽  
Southern Alps ◽  
Water Vapour Flux ◽  
Atmospheric Rivers ◽  
Transport Dynamics ◽  
Wind Velocities ◽  
Vapour Flux ◽  
Depth Increase

AbstractSynoptic-scale moisture transport during large snowfall events in the New Zealand Southern Alps is largely unknown due to a lack of long-term snow observations. In this study, records from three recently developed automatic weather stations (Mahanga, Mueller Hut and Mt Larkins) near the Main Divide of the Southern Alps were used to identify large snowfall events between 2010 and 2018. The large snowfall events are defined as those events with daily snow depth increase by greater than the 90th percentile at each site. ERA-Interim reanalysis data were used to characterize the hydrometeorological features of the selected events. Our findings show that large snowfall events in the Southern Alps generally coincide with strong fields of integrated vapour transport (IVT) within a north-westerly airflow and concomitant deepening low pressure systems. Considering the frequency of large snowfall events, approximately 61% of such events at Mahanga were associated with narrow corridors of strong water vapour flux, known as atmospheric rivers (ARs). The contributions of ARs to the large snowfall events at Mueller Hut and Mt Larkins were 70% and 71%, respectively. Analysis of the vertical profiles of moisture transport dynamics during the passage of a landfalling AR during 11-12th October 2016 revealed the key characteristics of a snow-generating AR in the Southern Alps. An enhanced presence of low and mid-level moisture between 700-850 hPa and pronounced increases of wind velocities (more than 30 m s-1) with high values of the meridional component between 750-850 hPa were identified over the Southern Alps during the event.

Information-seeking to Support Personal and Community Wellbeing: Report of a study of New Zealand Men Using Focus Groups

2016 ◽  
Author(s):  
Peta Wellstead
Keyword(s):  
New Zealand ◽  
Focus Groups ◽  
Support Services ◽  
Information Seeking ◽  
Service Providers ◽  
Structural Constraints ◽  
Health And Wellbeing ◽  
Study Results ◽  
Groupes De Discussion

This paper reports part of an ongoing study exploring the information behaviour of New Zealand men during periods of diminished health and wellbeing. Focus groups were used for this iteration of the study. Results indicate that New Zealand men face both personal and structural constraints to their information-seeking during periods when their health and wellbeing may be compromised. This study highlights that service providers need to develop more effective information delivery mechanisms and support services for men. These services need to be appealing to men and reflect men’s information seeking preferences. The role of LIS professionals in supporting this endeavour is discussed. Cet article présente une étude en cours explorant le comportement informationnel d’ hommes néo-zélandais durant des périodes où leur état de santé et de bien-être est amoindri. Des groupes de discussion ont été utilisés pour cette itération de l'étude. Les résultats indiquent que les hommes en Nouvelle-Zélande font face à des contraintes à la fois  personnelles et structurelles dans leur recherche d'information pendant les périodes où leur santé et leur bien-être peuvent être affaiblis. Cette étude met en évidence le besoin pour les fournisseurs de services de développer des mécanismes de diffusion de l'information plus efficaces et des services de soutien pour les hommes. Ces services doivent être attrayants et refléter les préférences des hommes dans leurs recherches d’information. Le rôle des professionnels de l'information dans le soutien à cette entreprise est discuté.

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