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  1. Climate change. Climate change is already affecting our climate. It is likely to impact our agriculture and other climate-sensitive industries, our native ecosystems, infrastructure, health and biosecurity, as well as having broader social and economic impacts. New Zealand can expect to see changes in wind and sea current patterns, storm tracks, the occurrence of droughts and frosts and the frequency of heavy rainfall events, as well as rising temperatures.

  2. Sep 30, 2021 · Climate change can affect our mental and physical health Higher temperatures can negatively affect the physical health of people particularly over the age of 65 and people who work outdoors. For example, models indicate that in Christchurch we are already seeing an average of 14 heat-related deaths per year in adults over 65 years old.

  3. Oct 15, 2020 · In some parts of New Zealand higher temperatures have been linked to an increased risk of Salmonellosis infection, and may lead to reduced food safety (Lal, Hales, Kirk, Baker, & French, 2016; Royal Society Te Apārangi, 2017). Warmer winters, however, may reduce winter illness and deaths but this has not yet been observed in New Zealand.

  4. negative impacts of human activity are likely to be magnified as the effects of climate change intensify. Climate change threatens to slow, halt or even reverse the health gains that society and health care systems have made over the last century (WHO and Healthcare Without Harm 2009). The expected temperature shifts alone have major

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    • 2050 Weather Forecast
    • People
    • Species and Ecosystems
    • Alpine Ecosystems
    • Coastal and Marine Environments
    • Freshwater Environments
    • Terrestrial Environments
    • Economy and Business
    • Infrastructure
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    In the following video, NIWA forecaster Nava Fedaeff provides a weather report as if the year is 2050. This is only a possible scenario and not a true forecast. Nevertheless, it is based on the most up-to-date climate science, and attempts to paint a compelling picture of what life could be like on a warmer planet.

    The health of many New Zealanders will be affected by a changing climate. Hotter temperatures and heatwaves may bring health issues for vulnerable groups, particularly the elderly and babies, as well as outdoor workers. A warming climate may increase the likelihood of tropical diseases, such as dengue fever and malaria, reaching New Zealand. New Ze...

    Ecosystems are interconnected communities of different species (such as specific types of plants and animals). When one species is affected by a changing environment, all species within the ecosystem are likely to be affected. For many species, climate change will affect their ‘range’—the habitat in which they can comfortably live—and some species ...

    We can also expect more pressure on alpine ecosystems from pest species such as rats and hedgehogs as warmer temperatures allow them to survive at higher elevations.

    Our coasts and marine environments will face a range of challenges. Ocean acidification is one major process that will impact the balance of life in our oceans. Our oceans absorb more than a quarter of the CO2 released into the atmosphere from human activities. This process causes oceans to become more acidic. Species that grow calcium carbonate sh...

    We’re still learning how freshwater environments will be impacted by climate change. We do know that water in our rivers, lakes, estuaries and wetlands will become warmer as air temperature increases. Warmer water temperatures will likely impact the range of many species, as well as nutrient cycling and primary productivity. Like with marine waters...

    Many native birds and insects living in on land will be affected by climate change. Warming temperatures will likely make New Zealand a more suitable habitat for invasive flora and fauna. Invasive species from warmer climates may 'outcompete' native species Subtropical plant species like bangalow palm currently only grow in northern New Zealand, bu...

    Primary industries

    The primary sector makes up a large part of New Zealand's economy. Primary industries produce natural goods like dairy, meat, fruit and wine. Because these industries are susceptible to large changes in temperatures and rainfall, they will be affected by a changing climate. Primary industries will be at risk from more frequent extreme weather events. Drought negatively impacts the productivity of the land and will present challenges to many industries including farming and fruit-growing, part...

    Alpine industries

    NIWA's annual end of summer snowline survey has shown that over the past few decades our snowlines have advanced higher up our glaciers, which is associated with reductions in glacial ice volume. Future climate projections show a potential reduction in snow days and warmer temperatures at high altitudes. This may present challenges to the ski industry. Many ski fields will likely look to create more artificial snow to help offset snow losses. Many ski fields are also diversifying their busine...

    Sea-level rise

    Two thirds of New Zealanders live within 5 km of the coast, so sea-level rise will directly affect many of us. Sea-level rise is caused by melting of the polar ice caps, as well as expansion of ocean water as it warms. In New Zealand, the sea may rise by up to a metre by the end of the century. This will mean more coastal erosion and flooding, which will damage homes and infrastructure like pipes and roads. Increased rainfall will pose a challenge for stormwater networks. Many of our drainage...

    Water supplies

    We will also have to think about our water supplies, but not only during dry periods. In March 2017, a huge storm called 'The Tasman Tempest' descended on Auckland. Unprecedented amounts of rain fell on the Hunua Ranges causing massive slips into water reservoirs, contaminating drinking water with silt. Water restrictions were put in place and water managers realised that they would have to plan for similar events in the future. As parts of the country become drier, people will have to think...

    We are already seeing the effect of a warming climate on New Zealand mountains. Warmer temperatures are causing snowlines to advance further upslope and glaciers to retreat. In the future, our mountains may be rockier with less snow cover. In the past, New Zealanders have built houses and infrastructure very close to the coast. Sea-level rise and s...

  5. Oct 30, 2021 · Climate-sensitive health risks. Climate change is already impacting health in a myriad of ways, including by leading to death and illness from increasingly frequent extreme weather events, such as heatwaves, storms and floods, the disruption of food systems, increases in zoonoses and food-, water- and vector-borne diseases, and mental health issues.

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