Simulating New Zealand's changing climate

Establishing a New Zealand earth system modelling capability

A project which sits at the heart of the Deep South Challenge is the construction of the NZ Earth System Model (NZESM). The NZESM is a kind of crystal ball – a mathematical model of the earth’s natural systems so intricate it can predict the effects of emissions from our atmosphere, land and seas, and the
terrestrial and marine biosphere, far into the future.

  • Project funding: $1.9 million 
  • Project Duration: Initially 2015-2019

The two main aims of this major endeavour are to advance our fundamental understanding of important climate processes, and to predict New Zealand’s future climate out to the year 2100.

Almost all of the world’s climate modelling capacity is based in the northern hemisphere. Yet gaps in international observations and understandings of the deep south region (of great importance to global climate change) are reflected in projections of climate produced by these models. Our proximity means this particularly impacts the quality of climate projections for New Zealand.

In this significant endeavour – an international partnership led by the UK Meteorological Office – we’re helping to develop a powerful climate model and are augmenting it with improved formulations of Southern Ocean and Antarctic processes, informed by Deep South Challenge observations, to develop a comprehensive tool for simulating climate – the NZESM. We’re awaiting a new supercomputer – arriving in stages between late 2017 and early 2018 – which will greatly enhance our capacity to contribute to global understandings of climate change and make more accurate predictions of future climate in New Zealand and the Pacific.

By strengthening our ability to understand and anticipate our future climate, we’re giving New Zealanders the best possible chance to adapt and manage risk
in the years to come.

Primary Contact and Principle Investigator:

  • Dr Olaf Morgenstern, NIWA

Olaf holds a PhD in meteorology and has worked in the UK and Germany on the development of atmospheric chemistry and chemistry-climate models. He is leading the New Zealand Regional Atmosphere Programme, is an elected member of the International Commission on the Middle Atmosphere (ICMA). More information on Olaf’s work can be found here.

Project Partners:

  • NIWA
  • New Zealand e-Science and Infrastructure
  • UK Met Office
  • NEMO ocean modelling consortium
  • Los Alamos sea ice modelling group
  • Centre for Australian Weather and Climate Research

Latest news and updates

Deep South Challenge tackles crucial task of understanding and adapting to climate change

On Monday 4 September, Minister for Science and Innovation Paul Goldsmith will open the inaugural Deep South Challenge symposium at the Wharewaka (Wellington waterfront), about how New Zealand can and must change in line with our changing climate.

Climate Change and Mātauranga Māori

Seven kaupapa Māori climate change projects – a first for New Zealand climate research – to be celebrated at inaugural Deep South Challenge symposium

Climate Change Engagement in Aotearoa New Zealand

A new report released by the Deep South Challenge this month recommends increasing the availability of plain-language resources about climate change in both English and te reo Māori, framing scientific information for application to practical decision making, and increasing access to climate change conversations for a wider array of end-users.