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The cascading impacts of climate change

We need to better understand the interconnections of climate change says Dr Judy Lawrence, researcher at Victoria University and lead of two Deep South Challenge projects.

Imagine you’re a local kiwifruit farmer, says Dr Judy Lawrence, and the consistently warmer weather means the harvest season has come early.

“If you have higher temperatures earlier, it means you’ve got to harvest earlier and cool your fruit for longer. This means higher energy costs, which reduces your profit. And you’ve got a greater potential for spoiling the product, and therefore market demand may not be met.

“Optimum temperature zones may change, leading to regional impacts on the economy, which flow onto social impacts.

“This is just one scenario that demonstrates the cascading impacts of climate change.”

Dr Lawrence is a research fellow at the New Zealand Climate Change Research Institute at Victoria University of Wellington working on a number of future-focused projects to better understand the scale and scope of climate change implications across the country.

“We know that the impacts of increases in temperature, floods and sea-level rise trickle down within and across sectors affecting people, assets and our social and economic interactions,” says Dr Lawrence.

“And as these changes become more frequent, like heavy rainfall, and as the sea-levels rise and the effects increase from storm surges, we’re going to have less time to recover from them—which will also have cumulative consequences.

“We need to make sure that we’re thinking about the interconnections. The impacts themselves cascade, but policy responses can also cascade if the interconnections are not factored in.”

Mid-last year, a group led by Dr Lawrence was awarded nearly $300,000 from the Deep South Challenge to investigate how different climate change impacts interact, who is affected, where inter-dependencies and co-dependencies occur, and how far impacts might extend across multiple sectors.

“We make decisions today that are going to be around for a long time. We need to know where the impacts of rising sea levels and extreme weather events will fall, to understand how we will prioritise them.”

New funding for decision making tools

This month Dr Lawrence starts leading another Deep South Challenge-funded project, which was awarded nearly $350,000.

In it she will work alongside National Institute of Water and Atmospheric Research (NIWA) and Landcare Research scientists to develop new, practical tools to aid decision-making to anticipate, avoid and manage climate change impacts.

Dr Lawrence says this comes after calls from local government, which is responsible for considering the effects of climate change.

“The project will help to enable decision-making under uncertain and changing conditions. We can anticipate problems by testing our options and different pathways against a range of scenarios.

“By doing that we can identify under what conditions policy options and pathways might fail, which enables us to set up signals, to warn people, and trigger points where decisions will need to be made. Decisions can then become more flexible and more resilient.

“For example—many of New Zealand’s airports, such as Wellington, Napier, Nelson and Dunedin, are located in low lying areas. How will these facilities cope with rising sea levels? We’re trying to get a better fix on when people or organisations will need to change tack and adapt.”

Building capability and resilience in a changing climate

This work builds on research Dr Lawrence led on the Climate Change Impacts & Implications (CCII) research project, funded by the Ministry of Business, Innovation and Employment. The report recommends a stronger focus on the effect of climate change on pests and diseases management, and on building capability to address changing climate impacts.

Last year Dr Lawrence was appointed by Minister for Climate Change Issues Paula Bennett to co-chair the Government’s Climate Change Adaptation Technical Working Group, advising on how New Zealand can adapt to future climate changes.

Dr Lawrence is co-chairing the group alongside Penny Nelson, Deputy Secretary Sector Strategy at the Ministry for the Environment.

“We’re currently doing a stocktake of what’s been done on climate change adaptation, both in New Zealand and overseas,” says Dr Lawrence.

“Then we will identify a range of options for how New Zealand can build resilience through adaptation to climate change, identify how adaptation can be managed and what the priorities are.

“A lot of countries already have adaptation plans that coordinate economy-wide actions so you could say this work in New Zealand is well overdue. It’s a challenging project to be working on that links research and policy.”

Original article published by Victoria University of Wellington

Deep South Challenge announces exciting new partnership

The Deep South Challenge is excited to be partnering with ANTARCTICA – while you were sleeping which is showing at Auckland Museum as part of the 2017 Auckland Arts Festival.

Auckland Museum will become the canvas for a full-scale, 360-degree projection of a majestic Antarctic iceberg

Friday 24, Saturday 25, Sunday 26 March

8.30PM-11PM, 45-minute loop

Visual artist Joseph Michael has collaborated with composer Rhian Sheehan to create an immersive multi-sensory installation that translates the scale and awe of Antarctica. Listen to the ice crack and drip, creak and groan as colossal sections of ice calve off, set to a dramatic sound score.

Experience the sights and sounds in a taster for the event NZHerald – New Zealanders to meet Antarctica’s Icebergs

How is the Deep South Challenge involved?

Antarctica is beautiful and impressive. It also contains important information about processes occurring around the ice, ocean, and clouds that are critical for an improved understanding of our future climate. The Deep South Challenge is helping create opportunities for visitors to the show to ask questions and learn more about this research. We will be present in a number of ways:

Featured in Radio New Zealand podcasts:

A series of podcasts called Voice of the Icebergs is being broadcast in the lead-up to this event. The second of these, Revelation, features the Challenge Director, Dr Mike Williams, talking about his research into icebergs.

Key partner in the Auckland Museum Smart Talk

Saturday 25 March, 6:30PM – 7:45PM

The Deep South Challenge has helped to frame the ANTARCTICA – while you were sleeping: Smart Talk panel discussion, which is part of a regular series hosted by Auckland Museum. The panel features experts from art, science, policy and business discussing possibilities for adaptation and collaboration in the light of our changing climate.

If you’re in the area and would like a ticket to this event, courtesy of the Deep South Challenge, please email [email protected] by Wednesday the 15th of March – alternately book your tickets online at the link above. 

Antarctic Zone

The Challenge will have a presence every night in the “Antarctic Zone” – pop by and say hi from 7pm each night!

Preparing New Zealand for climate change

Preparing New Zealand’s water stores for a warmer climate is a major focus of new research projects just awarded more than $2 million.

The funding, for five studies, is part of the Deep South National Science Challenge, which aims to help Kiwis adapt to the effects that climate change will bring, among them extreme weather events, drought, changes in typical weather patterns and sea level rise.

One of the new projects will improve future projections of glacier and snow melt from alpine regions.

While warming would lead to loss of frozen water resources, scientists say the magnitude, timing and distribution of changes in the meltwater remained unclear.

Yet mountain rivers in both islands feed our largest hydro-electric power schemes, providing critical water for irrigation, especially during drought.

Melting snow and ice may also cause increased flooding risk.

Researchers will develop and apply new computer modelling tools to simulate snow and ice responses to different climate change scenarios, and make projections of future snow and ice cover, and resultant run-off from alpine catchments.

Another project will attempt to map out the potential effects of climate change on New Zealand’s entire hydrological cycle, across a time scale stretching to the end of the century.

Hydrological states and fluxes will be analysed to forecast major potential changes and implications they’ll have for agricultural water resources, hydropower potential and flooding.

A third study, beginning next month, draws on climate change data to better inform future investments around water storage, with an initial focus on Canterbury.

Like the Government’s other 10 National Science Challenges, the effort combines the firepower of the country’s top scientists, bringing together researchers from Victoria University, Niwa, Scion, Landcare Research, University of Otago, Plant and Food Research, AgResearch and GNS Science.

“We are at an exciting point in the development of the challenge and are looking forward to seeing these projects start,” challenge director Dr Mike Williams said.

“This work will look at some of the climate-related impacts on essential resources and are key components in setting future priorities.”

A core part of the challenge will be boosting the use of the New Zealand Earth System Model, a world-class numerical tool to simulate current climate and make projections of future climates with different scenarios of future global greenhouse gas emissions.

In recent years, scientists have reported more defined projections around what climate change will mean for New Zealand.

One study, published last year, found there was already a 50 per cent greater chance of exceptionally high pressure systems occurring over New Zealand in summer than was the case a century ago.

The same paper showed that, due to changes in climate in the past 130 years, in response to greenhouse gas emissions and ozone depletion, weather patterns such as those seen in 2013’s $1.3 billion drought were 20 per cent more likely to occur in the present day than in the late 1800s.

New Zealand and climate change
  • Under present projections, the sea level around New Zealand is expected to rise between 50cm and 100cm this century, while temperatures could also increase by several degrees by 2100.
  • Climate change would bring more floods (about two-thirds of Kiwis live in areas prone to flooding); make our freshwater problems worse and put more pressure on rivers and lakes; acidify our oceans; put even more species at risk and bring problems from the rest of the world.
  • Climate change is also expected to result in more large storms compounding the effects of sea level rise.
  • New Zealand, which reported a 23 per cent increase in greenhouse gas emissions between 1990 and 2014, has pledged to slash its greenhouse gas emissions by 30 per cent from 2005 levels and 11 per cent from 1990 levels by 2030.

Read the related Deep South Challenge press release

Read the original NZ Herald story

Jamie Morton – NZ Herald

NZ Geographic: New Zealand’s Next Top Model

View the article here: New Zealand’s Next Top Model

Online hub for climate impacts and implications

The article is also the leading story on a new online hub that we have catalysed, which brings together high-quality NZ journalism about climate change in one place: Climate Hub on New Zealand Geographic

We hope that this will become a really useful resource for public engagement, educational purposes, and sector engagement.

Contact us for more copies

We would also like to send physical copies of the magazine out to any friends of the DSC who have opportunities to share them with associates/ networks – we are hoping these features will also become a useful “entry point” for more tailored discussions about the DSC. If you would like some physical copies, please email the Engagement Team and include in your email (a) your relationship with the DSC, (b) how many copies you would like, and (c) where you will be able to distribute these.

Magazine cover
March-April Edition of NZ Geographic

$2 million boost for climate change impacts and implications research

Seawater spilling onto a road

The Deep South National Science Challenge today announced funding totalling approximately $2 million for five new research projects to help New Zealanders better understand their future climate.

The funding is part of the Deep South National Science Challenge which is tasked with enabling New Zealanders to adapt, manage risk and thrive in a changing climate.

This funding round is focused on the potential impacts and implications of climate change for New Zealand to support planning and decision-making around extreme weather events, drought, changes in typical weather patterns and sea level rise.

Challenge director Dr Mike Williams said it was crucial that New Zealand was adaptable and resilient in the face of climate change.

“The new research projects that the Challenge has funded will help us understand how climate change will affect New Zealanders, for example, by understanding future changes in land use and water availability”

Central to the Challenge is strengthening the links and interactions with the New Zealand Earth System Model. This world-class numerical model will simulate current climate and make projections of future climates with different scenarios of future global greenhouse gas emissions.

Ultimately the Deep South Challenge will help advance understanding of Southern Hemisphere influences on the global climate and give New Zealanders a greater level of certainty in the face of a changing climate.

The new projects:

While the projects are funded by the Deep South Challenge, they are undertaken by researchers across a range of institutions including Victoria University, University of Otago, NIWA, SCION and Landcare Research.

These projects will be delivered alongside the Engagement and Vision Mātauranga programmes that will connect the science to the experiences, needs, and decision-making processes of New Zealanders.

Dr Williams said the new projects represent the development of the final part of the Challenge, the Impacts and Implications Programme.  

“We are at an exciting point in the development of the Challenge and are looking forward to seeing these projects start. This work will look at some of the climate related impacts on essential resources and are key components in setting future priorities.”

The Deep South National Science Challenge is one of 11 Ministry of Business, Innovation and Employment-funded initiatives aimed at taking a more strategic and collaborative approach to science investment.

For more information contact:

Dr Mike Williams

Director, Deep South National Science Challenge

Ph 04 386 0389 Mobile: 021 044 7645

Antarctica’s great apron of sea ice just issued the world with a bold message

As New Zealand’s Scott Base celebrates 60 years of science on ice, Veronika Meduna writes for The Spinoff looking at one of Antarctica’s most puzzling features – the wayward behaviour of sea ice around the continent.  Her article features a Deep South Challenge researchers, and the work they are doing to understand the physics of the sea ice.

Every southern winter, Antarctica doubles in size. As the sun sets on the continent, the surface of the ocean around it freezes, kicking off the world’s most spectacular seasonal transformation. By spring, this apron of ice begins to break up again and by this time of the year, it largely retreats back to the coast.

For nearly four decades, as long as satellites have been watching these growth-collapse cycles from space, Antarctica’s sea ice has, on average, been growing further out from the continent, bucking the trend of vanishing sea ice seen in the Arctic and baffling scientists. Then, this season, everything changed.

During September and October 2016, in the hottest year on record globally and in New Zealand, both poles showed record low levels of sea ice, with millions of square kilometres of ice missing when compared with historic average values. Even in the Arctic, which has lost 40 per cent of sea ice since the 1980s and where this most recent development could be understood as an acceleration of an existing trend, the degree of sea ice loss is troubling scientists. In Antarctica, which saw a 4 per cent growth of sea ice up until 2014, this is exceptional.

To read the complete story visit Veronika’s article Antarctica’s great apron of sea ice at The Spinoff

Carbon dioxide. Where does it come from? Where does it go?

Sherry Ott, collecting an air flask sample from the Spirit of Enderby cruise ship (Heritage Expeditions) on a breezy Southern Ocean day en route from Invercargill to Antarctica

Radio-carbon researcher Jocelyn Turnbull from GNS science outlines how her research informs the New Zealand Earth System Model.

Jocelyn: We all know that it comes from burning of fossil fuels (coal, oil and natural gas), which produce carbon dioxide, which goes into the atmosphere, which makes the world warmer. What you may not know is that of the carbon dioxide we produce from fossil fuels, only about half stays in the atmosphere.  This has been remarkably consistent since the start of the industrial revolution – each year, only about half the carbon dioxide we produce stays in the atmosphere, even as the actual amount of carbon dioxide we produce keeps increasing each year.  

So where does the other half go?  We know that it isn’t escaping into space, so it must be going into the land or into the oceans, or both.  The answer is that Planet Earth is doing us a massive favour, or perhaps just trying to save herself, by taking up that carbon dioxide into both land and oceans.  The million dollar question is what drives the uptake of carbon into these sinks, and how might that change in the future?  Will these sinks “fill up”, causing a massive acceleration of global warming?  Or by learning how they work, can we perhaps help these sinks to take up even more carbon and reduce global warming?  

It turns out that the Southern Ocean is the most important of these “carbon sinks”, taking up by far the most carbon dioxide of any region of the world.  But we scientists are in the midst of an argument about this.  As the climate has warmed, the westerly winds over the Southern Ocean (the roaring forties and furious fifties that we Kiwis know so well) have increased.  Research based on measurements of carbon dioxide over the Southern Ocean says that the increase in the westerly winds has caused the Southern Ocean to do a poorer job of removing carbon from the atmosphere.  Other studies based on model simulations of ocean processes give an opposite answer; that the Southern Ocean has been getting better at taking up carbon. The problem is that we just don’t have enough measurements in the Southern Ocean or the atmosphere above it, because as you might have noticed, the Southern Ocean is the least populated part of the world, and it’s expensive and difficult to make measurements there. 

We are embarking on a new project between GNS Science and NIWA, funded by the Deep South National Science Challenge and a Royal Society of New Zealand Marsden grant.  We collect air samples from Arrival Heights in Antarctica, Baring Head in Wellington, on ships travelling between New Zealand and Antarctica, and tree rings from New Zealand’s Sub-Antarctic islands to make a suite of new measurements and model simulations over the Southern Ocean and resolve the argument – is the Southern Ocean carbon sink sinking or swimming? 

More about Jocelyn’s adventure on Stuff: Environment – Kiwi research into Southern Ocean could change global warming predictions 

scientist takes a sample from a tree
Jocelyn Turnbull showing off a tree core collected from a southern rata specimen at Hardwicke, Auckland Island in January 2016.  The tree corer can be seen on the left. Image by Erin Whitehead

Content provided by Jocelyn Turnbull, GNS Science. To contact Jocelyn please refer to her organisational bio at GNS

NeSI’s supercomputer helps shed light on future climate

Changing climate simulation an a computer

“NeSI is providing the supercomputing infrastructure on which we are producing climate simulations, both globally and using a regional climate model. You cannot operate an Earth System Model without a supercomputer.”

Climate change is widely seen as a leading problem of our times. The Intergovernmental Panel on Climate Change (IPCC), in its 2013 Assessment Report, states that “human influence on the climate system is clear, and recent anthropogenic emissions of greenhouse gases are the highest in history. Recent climate changes have had widespread impacts on human and natural systems.” The impressive ability of climate models to capture many aspects of the climate system has made them the cornerstone of all IPCC assessment reports; they are widely used to quantify the human influence on climate. However, the Earth is a highly complex system, and there remain numerous challenges to improving climate models. Three competing tensions act to increase the computational cost of running a climate model: Firstly, various processes are simplified or absent in models; addressing this requires us to increase the complexity of models. Secondly, the representation of climate usually improves with improved resolution, so there is a tendency to operate these models at as high a resolution as possible. Thirdly, climate is subject to an element of chaos. Therefore large ensembles of simulations are needed to accurately represent the most likely climate evolution and particularly extreme events such as severe storms, floods, or heat waves. For these three reasons, climate modellers often encounter limitations imposed by the computational resource at their disposal, and climate modelling can be the main motivation for upgrading ageing computing infrastructure.

For the complete story, and an excellent animated video of ocean currents visit NeSI – New Zealand eScience Infrastructure

Icetronauts use old bird to measure Antarctic ice

Towed below a DC3 aircraft, the state-of-the-art EM-bird flies 15 metres above Antarctic sea ice. “The EM-bird is the only instrument which can measure the thickness of sea ice remotely.” – Dr Wolfgang Rack
Photo credit: G Leonard

University of Canterbury glaciologist Dr Wolfgang Rack is leading the world’s first EM-bird measurement of sea-ice thickness, towed by a 75-year-old fixed-wing aircraft in McMurdo Sound, Antarctica.  

The Icetronauts project is being conducted as part of the New Zealand Government’s Deep South National Science Challenge for targeted observations of earth system variables. Our aim is to explore how much sea water is freezing in the Southern ocean every year and how important it is to the global climate, Dr Rack says.

“Sea-ice thickness is the biggest unknown in cryosphere research, because it is so hard to measure. It amazes me how little we know about it, despite its significance for global climate,” he says. “The EM-bird is the only instrument which can measure the thickness of sea ice remotely.”

The ‘EM’ stands for ElectroMagnetic induction. It is a state-of-the-art technology to remotely measure ice thickness, and it works similar to an induction cook top, Dr Rack says.

“Because sea ice is salty, conventional radar cannot measure thickness, but the EM instrument can, although it needs to be operated close to the surface.”

For the measurements, the research team, called The Icetronauts, used a converted 1942-built DC-3 aeroplane to tow the EM-bird at a height of 15 metres above the Antarctic sea ice.

“We are happy to be the first researchers who have shown that the EM-bird can be operated in Antarctica safely from an aeroplane.”

Field measurements of sea-ice thickness and ocean properties were also made. The data is being used to verify aircraft and satellite measurements to derive ice thickness maps in the Southern Ocean, as part of a PhD study at Gateway Antarctica by UC student Gemma Brett.

“For my PhD, I am using an instrument which is very similar to the EM-bird except it is ground-based – it is sled-mounted and I towed it behind a skidoo across the sea ice,” she says.

Dr Rack is a senior lecturer in Glaciology and Remote Sensing at Gateway Antarctica Centre for Antarctic Studies and Research, at the University of Canterbury. From November 2016 to January 2017 there were six icetronauts working on the ice; two on sea ice and four on the Ross Ice Shelf. There are currently eight icetronauts working at Gateway Antarctica.

“Sea-ice science requires a multidisciplinary approach as it involves glaciology, meteorology, oceanography, and biology,” Dr Rack says.

Project partners include NIWA, York University Toronto, the University of Otago and Antarctica New Zealand.

Story courtesy of University of Canterbury.

Vision Mātauranga – Request For Proposals

Kia hiwa rā, kia hiwa rā, kia hiwa rā!

Hei ngā maunga, hei ngā reo, hei ngā iwi, tēnā koutou, tēnā koutou, tēnā tātou katoa. Tēnā koutou i ō tātou aituā maha e hinga atu nā, e takoto mai rā i ō tātou marae. Koutou te hunga para i te huarahi, haere koutou. Hoki atu ki te okiokinga mō te tangata i te wāhi ngaro. Tātou e takatū tonu nei hei urupā mō rātou, tēnā anō tātou katoa.

Tēnei mātou a Taihoro Nukurangi, a NIWA e korihi nei, e mihi kau atu ki ngā tōpito e whā, ki ngā tini kārangatanga maha, ki ngā whare wānanga otiiā ngā wāhi mahi rangahau puta noa i te motu. 

Nau mai, haere mai ki tō tātou kaupapa, e kiiā nei ko te `Komata o te tonga’, me kī `Deep South’, tētehi o Ngā Wero Pūtaiao-ā-motu. Ko tōna kaupapa matua, ko te wāhanga Pūnaha Hihiko e hāngai pū tonu ki ngā rerekētanga o te āhuarangi me ōna tikanga katoa. Heoti anō rā, he pānui tēnei ki a koutou, he pūtea e wātea ana mō te hunga mātanga rangahau Māori. Nō reira pānuihia mai ngā whakamārama e whai ake nei.

Request for proposals – second funding round

The Vision Mātauranga science programme, as part of the Deep South National Science Challenge, is pleased to announce the opening of its second funding round. Research projects are sought that will contribute substantive and transformative outcomes for Māori and wider Aotearoa/New Zealand. 

This science programme gives effect to the Ministry for Business Innovation and Employment (MBIE) Vision Mātauranga Policy through strategic planning and research. Project proposals will be built around the four research themes identified in the Deep South Challenge Research and Business Plan.

The four research themes are:

Theme 1: Understanding climate change – linkages, pressure points and potential responses 

Theme 2: Exploring adaptation options for Māori communities (rural and urban)

Theme 3: Assistance to Māori businesses to aid decision-making and long-term sustainability

Theme 4: Products, services and systems derived from mātauranga Māori*

* Includes: Te reo Māori, tikanga Māori and new technologies

Funding and duration

Potential projects will be funded up to a maximum of $250k. It is anticipated that successful applicants will commence their projects on 1 July 2017 or as soon as practicable thereafter, for a period of up to 24 months.

Applications will need to complete the first three documents as listed below. The fourth document is provided to demonstrate how projects will be assessed. Please pass on this information to other investigators involved in your project. For information on previously funded Vision Mātauranga science projects round please refer Vision Mātauranga science projects.

Timeframe

Proposals are due by Thursday 30 March 2017 at 5.00pm. 

Please submit your proposal to the Deep South Challenge Manager – Lucy Jacob ([email protected]).

Proposals received after the closing date will not be accepted.

All proposals will be reviewed by the Kāhui Māori, the Science Leadership Team and the Independent Science Panel prior to the Deep South Challenge Director recommending projects for funding to the Deep South Board for approval. 

The following information sets out these indicative processes and timelines. Note these times are New Zealand Standard Time. We reserve the right to alter the timeline if required.

  • 1 February – Board approves Vision Mātauranga Timeline
  • 8 February – Vision Mātauranga RfP released
  • 30 March – Project Proposals Due
  • 3 – 6  April – Project Reviews by Kāhui Maori
  • 10 – 13 April – Project Reviews by Science Leadership Team
  • 17 – 21 April – Project Reviews by the Independent Science Panel
  • 24 – 28 April – Director provides funding recommendations to Governance Board
  • 4 May – Board considers project recommendations and approves funding
  • 10 May – Director informs Project Leaders and contracting commences
  • 1 July –  Projects commence

For more information

For more information pertaining to this RfP please contact the Science Leader Vision Mātauranga Darren-Ngaru King ([email protected] 09 375 2050) or the Challenge Director Mike Williams ([email protected] 04 386 0389).