Climate change

Climate change effects are accelerating, driving the need for actions informed by sound climate knowledge.

Climate change

NIWA is committed to providing the science needed to adapt to and mitigate climate change. By making informed choices now, we can reduce risks, maximise opportunities, foster climate resilience and work towards a carbon-neutral economy.

“The challenges of reducing our national greenhouse gas emissions and adapting to a changing climate are hugely important and affect all New Zealanders. The Climate Change Response (Zero Carbon) Amendment Bill provides the framework for responding to these challenges. NIWA’s role – providing research for evidence-based decision-making and science-based solutions to reduce emissions and adapt to our changing climate – is now more important than ever.”

Dr Andrew Tait, Chief Scientist, Climate, Atmosphere and Hazards

The latest climate change facts you need to know:

Latest news

This is one of the most extreme drought events for Auckland in modern times and similar to one experienced in 1993/94.
Analysis of drought conditions across New Zealand this year shows it is one of the most severe on record for some regions.
Young New Zealanders can now access the most up-to-date educational material about the science of climate change and its impacts on Aotearoa thanks to NIWA’s new web section: 'Climate change information for climate solvers'
Scientists have recorded more snow on the South Island glaciers this year, but they warn it is simply a temporary break rather than any good news on the climate change front.

Our work

NIWA is developing a national river flow forecasting tool for New Zealand that aims to support and strengthen our planning for and response to extreme rainfall events.
Climate Present and Past is a core-funded project under NIWA's National Climate Centre. It aims to explore historical climate data and track past changes in climate through a range of approaches.
Last updated: 
26 November 2019
Regional-scale climate projections assist New Zealand’s local government authorities to adequately assess the local risks presented by climate change now and prepare their communities for the future impacts of climate change.
RiskScape, a joint venture between NIWA and GNS Science, is a tool for analysing potential economic and social impacts from multiple natural hazards.

Latest videos

Our Climate is Changing

Our climate is changing - we need to act now.

Glaciers Don't Lie

If you think New Zealand's Southern Alps are shielded from climate change – take a look at this. "You can't make a glacier lie.”

Ocean acidification - what is it?

The on-going rise of carbon dioxide (CO2) in the atmosphere is not only changing our climate—it is also changing our oceans. Take a look at the work of the NIWA-led CARIM project into what these changes may mean for the delicate balance of marine life.

Welcome to the second edition of Asia-Pacific Update, our newsletter focusing on NIWA's international work in the Pacific, Southeast Asia and Australia. In this edition we focus on some of our recent aquatic biodiversity and biosecurity work in the region.

The statement made by NIWA Principal Scientist, Dr Keith Lassey in a TV3 news story about methane (22 Dec 2009) is correct.

The concentration of methane in the atmosphere is rising, according to measurements made by NIWA.

NIWA has today released measurements from its globally significant Baring Head station showing that southern hemisphere atmospheric methane increased by 0.7% over the two-year period 2007–08. While this increase may not sound like much, it is about 35 times more than all the methane produced by New Zealand livestock each year.

NIWA's long-running 'seven-station' series shows NZ's average annual temperature has increased by about 1 °C over the past 100 years.
There are many lines of evidence showing that NZ has warmed during the past century.

New Zealand temperature trends from a set of eleven climate stations with no significant site changes since the 1930s

Location of Total Carbon Column Network Observing Sites (as of November 2009). GOSAT is the Greenhouse Gases Observing Satellite.

This schematic shows how greenhouse gas measurements are made for the Total Carbon Column Observing Network at NIWA's Lauder Atmospheric Research Station in Central Otago, New Zealand.

This is a description of technical terms used in the Total Carbon Column Observing Network project page.

NIWA's research station at Lauder in Central Otago specialises in measuring CFCs, ozone, UV levels and greenhouse gases and has a wide range of world-class instruments and research scientists.

Three new posters of the Cook Strait and Wellington Harbour seabed reveal for the first time a treasure trove of detailed information for the benefit of all New Zealanders.

14 September 2009 - Port of New Orleans CEO, Gary La Grange, is in Wellington to talk about the lessons New Orleans learnt from its recovery from Hurricane Katrina and how these experiences can help protect coastal and port areas worldwide. Mr La Grange is one of the keynote speakers at the Australasian Coasts and Ports Conference at Te Papa Tongarewa, from 16-18 September 2009.

NIWA and IBM today announced a multi-million dollar partnership where NIWA will purchase one of the world’s most powerful supercomputers for use in environmental forecasting.

Our oceans are expected to become more acidic as carbon dioxide concentrations rise. This will likely have impacts on the plankton, which play a major role in ocean ecosystems and processes.
NIWA is conducting a five–year study to map changes in the distribution of plankton species in surface waters between New Zealand and the Ross Sea.
These studies extended NIWA's regional climate modelling work, addressing future changes in drought risk and extreme winds under a warming climate.
Climate data and common terms explaining the causes and effects of climate change.

Projections of how climate change is likely to affect New Zealand.

Large areas of the ocean, such as the north Tasman and Mediterranean Seas, are low in nutrients with only limited growth of phytoplankton, the microscopic plant cells at the base of the food chain.

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All staff working on this subject

Principal Scientist - Coastal and Estuarine Physical Processes
Principal Scientist - Climate
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Marine Biogeochemistry Technician
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Coastal and Estuarine Physical Processes Scientist
Principal Scientist - Atmosphere
Principal Scientist-Marine Biogeochemistry
Principal Scientist - Climate and Environmental Applications
Emeritus Researcher – Atmospheric Radiation
Principal Scientist - Atmosphere and Climate
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Marine Physics Modeller
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Climate Scientist
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Freshwater Fisheries Ecologist
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Physical Oceanographer
Principal Scientist - Coastal and Estuarine Physical Processes
Chief Scientist - Climate, Atmosphere and Hazards
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Marine Biologist (Biosecurity)
Atmospheric Scientist
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Freshwater Fish Ecologist
Environmental Economist
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