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  • National PM10 exceedances 2006–13

    Ministry for the Environment
    Particulate matter 10 micrometres or less in diameter (PM10) in the air comprises solid particles and liquid droplets from both natural and human-made sources. PM10 can be emitted from the combustion of fuels, such as wood and coal (eg from home heating and industry), and petrol and diesel (from vehicles). Natural sources of PM10 include sea salt, dust,...
    Created 2 February 2020 Updated 1 January 2023
  • Average estimated national groundwater volume per year, 1994-2014

    Ministry for the Environment
    Groundwater is the water stored beneath Earth’s surface in aquifers (layers of water-bearing rock or sand). It is used for human and stock drinking water, irrigation, and industry, and also has a role in sustaining some rivers, lakes, and wetlands, especially during low-flow periods. The health of surface-water ecosystems also depends on groundwater....
    Created 2 February 2020 Updated 1 January 2023
  • Distribution of stoats 2002–2014

    Ministry for the Environment
    "The pressure from animal and plant pests is one of the biggest threats to biodiversity in the land environment. Pest predators (such as stoats and possums) eat eggs, birds, lizards, insects, and snails. Other animal pests (such as deer and goats) damage and kill trees and other plants and can compete with indigenous animals for the plants’ fruit and...
    Created 2 February 2020 Updated 1 January 2023
  • River water quality: Clarity and turbidity, flow adjusted trends, 1991 - 2020

    Ministry for the Environment
    Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency. Dataset used to develop the "River water quality: clarity and turbidity" indicator (available at https://www.stats.govt.nz/indicators/river-water-quality-clarity-and-turbidity). This dataset contains two attributes of water quality based...
    Created 1 September 2022 Updated 1 January 2023
  • Standardised soil moisture deficit 2007-2008

    Ministry for the Environment
    Soil moisture is important for plant growth. A lack of moisture content over a growing season is a good indicator of drought, which can have social, environmental, and economic impacts. Increasing temperatures and changes in rainfall patterns are expected to increase the frequency and intensity of drought in many regions. Growing season soil moisture...
    Created 2 February 2020 Updated 1 January 2023
  • Growing season soil moisture deficit, 1994-1995

    Ministry for the Environment
    Soil moisture is important for plant growth. A lack of moisture content over a growing season is a good indicator of drought, which can have social, environmental, and economic impacts. Increasing temperatures and changes in rainfall patterns are expected to increase the frequency and intensity of drought in many regions. Growing season soil moisture...
    Created 2 February 2020 Updated 1 January 2023
  • Particulate matter 2.5 annual trends, 2011-2020

    Ministry for the Environment
    Particulate matter (PM) comprises solid and liquid particles in the air. PM2.5 particles have a diameter less than 2.5 micrometres. They can be inhaled and deposited deep in the lungs where air-gas exchange occurs. Short- and long-term exposure to PM2.5, even at low levels, is linked to respiratory and cardiovascular disease, and increased risk of...
    Created 1 December 2021 Updated 1 January 2023
  • Ground-level ozone annual trends, 2011-2020

    Ministry for the Environment
    Ground-level (tropospheric) ozone (O3) exists at a natural background level but is also produced when nitrogen oxides (NOx) and volatile organic compounds from vehicle emissions, petrol fumes, industrial processes solvents, and other human-made sources react in the presence of heat and sunlight. It is the primary component of photochemical smog. Ozone...
    Created 1 December 2021 Updated 1 January 2023
  • River water quality: Clarity and turbidity, trends, 1991 - 2020

    Ministry for the Environment
    Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency. Dataset used to develop the "River water quality: clarity and turbidity" indicator (available at https://www.stats.govt.nz/indicators/river-water-quality-clarity-and-turbidity). This dataset contains two attriutes of water quality based...
    Created 1 September 2022 Updated 1 January 2023
  • Units: percentage of normal sunshine hours 1981

    Ministry for the Environment
    "Sunshine is important for our health and recreation, and for the environment. It is also important for our agriculture-based economy, for example, for plant growth. This layer shows percentage of normal sunshine hours across New Zealand for 1981 as part of the data series for years 1972 to 2013. Data is for a calendar year (January–December). The...
    Created 2 February 2020 Updated 1 January 2023
  • Units: percentage of normal sunshine hours 1992

    Ministry for the Environment
    "Sunshine is important for our health and recreation, and for the environment. It is also important for our agriculture-based economy, for example, for plant growth. This layer shows percentage of normal sunshine hours across New Zealand for 1992 as part of the data series for years 1972 to 2013. Data is for a calendar year (January–December). The...
    Created 2 February 2020 Updated 1 January 2023
  • Units: percentage of normal sunshine hours 1976

    Ministry for the Environment
    "Sunshine is important for our health and recreation, and for the environment. It is also important for our agriculture-based economy, for example, for plant growth. This layer shows percentage of normal sunshine hours across New Zealand for 1976 as part of the data series for years 1972 to 2013. Data is for a calendar year (January–December). The...
    Created 2 February 2020 Updated 1 January 2023
  • Annual rainfall, 1978

    Ministry for the Environment
    Annual rainfall is the total accumulated rain over one year. Rain is vital for life, including plant growth, drinking water, river ecosystem health, and sanitation. Floods and droughts affect our environment, economy, and recreational opportunities. This dataset shows annual average rainfall across New Zealand for 1978 as part of the data series for years...
    Created 2 February 2020 Updated 1 January 2023
  • Units: percentage of normal sunshine hours 1995

    Ministry for the Environment
    "Sunshine is important for our health and recreation, and for the environment. It is also important for our agriculture-based economy, for example, for plant growth. This layer shows percentage of normal sunshine hours across New Zealand for 1995 as part of the data series for years 1972 to 2013. Data is for a calendar year (January–December). The...
    Created 2 February 2020 Updated 1 January 2023
  • Units: percentage of normal sunshine hours 1997

    Ministry for the Environment
    "Sunshine is important for our health and recreation, and for the environment. It is also important for our agriculture-based economy, for example, for plant growth. This layer shows percentage of normal sunshine hours across New Zealand for 1997 as part of the data series for years 1972 to 2013. Data is for a calendar year (January–December). The...
    Created 2 February 2020 Updated 1 January 2023
  • Growing season soil moisture deficit, 1999-2000

    Ministry for the Environment
    Soil moisture is important for plant growth. A lack of moisture content over a growing season is a good indicator of drought, which can have social, environmental, and economic impacts. Increasing temperatures and changes in rainfall patterns are expected to increase the frequency and intensity of drought in many regions. Growing season soil moisture...
    Created 2 February 2020 Updated 1 January 2023
  • Sunshine hours 1989

    Ministry for the Environment
    "Sunshine is important for our health and recreation, and for the environment. It is also important for our agriculture-based economy, for example, for plant growth. This layer shows annual sunshine hours across New Zealand for 1989 as part of the data series for years 1972 to 2013. Data is for a calendar year (January-December). The National Institute...
    Created 2 February 2020 Updated 1 January 2023
  • Growing season soil moisture deficit, 2004-2005

    Ministry for the Environment
    Soil moisture is important for plant growth. A lack of moisture content over a growing season is a good indicator of drought, which can have social, environmental, and economic impacts. Increasing temperatures and changes in rainfall patterns are expected to increase the frequency and intensity of drought in many regions. Growing season soil moisture...
    Created 2 February 2020 Updated 1 January 2023
  • Annual rainfall, 1987

    Ministry for the Environment
    "Annual rainfall is the total accumulated rain over one year. Rain is vital for life, including plant growth, drinking water, river ecosystem health, and sanitation. Floods and droughts affect our environment, economy, and recreational opportunities. This dataset shows annual average rainfall across New Zealand for 1987 as part of the data series for...
    Created 2 February 2020 Updated 1 January 2023
  • Annual rainfall Units: percentage of normal, 2011

    Ministry for the Environment
    Annual rainfall is the total accumulated rain over one year. Rain is vital for life, including plant growth, drinking water, river ecosystem health, and sanitation. Floods and droughts affect our environment, economy, and recreational opportunities. This layer shows the annual rainfall as a percentage of normal across New Zealand for 2011 as part of the...
    Created 2 February 2020 Updated 1 January 2023