NZ Earth Systems Model


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This presentation will introduce the scope of weather and climate models, how they are similar and how they differ before moving on to the specifics of more complex Earth System Models, or ‘ESMs’. Particular attention will be paid to the ‘NZESM’ - the New Zealand Earth System Model - and how improving the resolution of its ocean model can help us better simulate and understand local climate processes in the region surrounding New Zealand and South Pacific.


  • Dr Erik Behrens: Erik is from Germany and gained his PhD in ocean modelling from the University of Kiel before moving to NIWA in 2014. Erik uses high resolution ocean models as his main tools to simulate the past, present and future of the ocean, both regionally and globally.

  • Dr Jonny Williams: Jonny is from Bath in England and after spells at the UK Met Office, private environmental consultancy and Bristol University moved to a job at NIWA in 2015. Jonny works on the development and evaluation of Earth System Models, which are complex models simulating the ocean, atmosphere, sea ice and other aspects of the climate system.


Inter-agency collaboration, a core principle in the development field, maximises impact of work of developing agencies and increases the value delivered to their stakeholders. For collaboration opportunities to be created, development organisations like SPC actively work on making their work transparent and visible to external actors.

As part of their effort towards increasing collaboration between agencies involved in the development sector in the Pacific, SPC and NIWA are organising a series of seminars in which some of their current and past work will be presented. The audience, in addition to staff members of these two organisations are stakeholders interested in SPC’s and NIWA’s work including MFAT, MBIE and others.

The topics covered in the webinars are topical and gravitate around use of advanced computing resources in solving problems in the fields of climate change, geoscience and fisheries among others. 

The topics and the dates are available in the related events below.

The events will be interpreted and recording of each of the sessions will be made available online.

Please contact the organiser, Dr Aleksandar Zivaljevic [email protected] for more information, for the invitation to the events or to express interest in webinars interpretation in French.
For matters related to communication, please contact Camille Menaouer, Digital Communications Coordinator at [email protected].

Useful link:

Webinar series page


Watch the webinar replay

Joint Event
Joint Partner