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  • Nitrate-nitrogen leaching from sheep livestock 2017

    Ministry for the Environment
    Raster layer with 100m * 100m pixels, Each pixel represents the estimated nitrate-N leached in kg/ha/yr. This layer contains all nitrate leaching estimated from sheep. More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.
    Created 2 February 2020 Updated 1 October 2022
  • Average annual sunshine hours, 2014

    Ministry for the Environment
    Sunshine is essential for our mental and physical well-being and plant growth. It is also important for tourism and recreation. More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.
    Created 2 February 2020 Updated 1 October 2022
  • Percent of normal sunshine hours, 2014–16

    Ministry for the Environment
    Sunshine is essential for our mental and physical well-being and plant growth. It is also important for tourism and recreation. More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.
    Created 2 February 2020 Updated 1 October 2022
  • Ocean and coastal extreme waves (6m), 2008

    Ministry for the Environment
    More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf. This index was generated using NIWA’s operational wave forecasting model NZWAVE-12. More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in...
    Created 2 February 2020 Updated 1 October 2022
  • Annual sea surface temperature difference from normal, 2016

    Ministry for the Environment
    The oceans store most of the excess energy accumulated due to increased greenhouse gases in the atmosphere warming the surface layer. These long-term increases in temperature caused by climate change are in addition to natural variability where ocean temperatures change in response to climate oscillations like the El Niño Southern Oscillation. Changes in...
    Created 2 February 2020 Updated 1 October 2022
  • Nitrate-nitrogen leaching from deer livestock 2017

    Ministry for the Environment
    Raster layer with 100m * 100m pixels, Each pixel represents the estimated nitrate-N leached in kg/ha/yr. This layer contains all nitrate leaching estimated from deer. More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.
    Created 2 February 2020 Updated 1 October 2022
  • Trends in annual maximum one–day rainfall (rx1day), 1960–2016

    Ministry for the Environment
    Trends in annual maximum one-day rainfall (rx1day), 1960–2016. Intense rainfall can result in flash floods or land slips that damage homes and property, disrupt transportation, and endanger lives. It can also interfere with recreation and increase erosion. Changes to the frequency of intense rainfall events can alter biodiversity. Trend direction was...
    Created 2 February 2020 Updated 1 October 2022
  • Lightning, 2001–2016

    Ministry for the Environment
    Lightning is the discharge of electricity from thunderstorms and can occur within a cloud, between clouds, or between a cloud and the ground. By international standards, lightning does not occur frequently around New Zealand. However, ground strikes can injure or kill people and livestock, damage property and infrastructure, and, although rarely in New...
    Created 2 February 2020 Updated 1 October 2022
  • Ocean and coastal extreme waves (8m), 2012

    Ministry for the Environment
    These data estimate the occurence of extreme wave events in coastal and oceanic waters for 2012, particularly for wave events where significant wave height exceeds a threshold of 8 metres and for a period of at least 12 hours. Significant wave height is defined as four times the square root of the variance of sea surface elevation due to wave motion. More...
    Created 2 February 2020 Updated 1 October 2022
  • Ocean and coastal extreme waves (8m), 2009

    Ministry for the Environment
    These data estimate the occurence of extreme wave events in coastal and oceanic waters for 2009, particularly for wave events where significant wave height exceeds a threshold of 8 metres and for a period of at least 12 hours. Significant wave height is defined as four times the square root of the variance of sea surface elevation due to wave motion. This...
    Created 2 February 2020 Updated 1 October 2022
  • Average annual sunshine hours, 2015

    Ministry for the Environment
    Sunshine is essential for our mental and physical well-being and plant growth. It is also important for tourism and recreation. More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.
    Created 2 February 2020 Updated 1 October 2022
  • Lake water quality trends 2008–2017 1998–2017 and 1990–2017

    Ministry for the Environment
    This dataset contains ten lake water quality variables based on measurements made at monitored lake sites: chlorophyll-a, nitrate-nitrogen, total nitrogen, ammoniacal nitrogen, dissolved reactive phosphorus, total phosphorus, Escherichia coli, water clarity, and lake trophic level index (TLI3 and TLI4). This dataset includes: - Median values for the...
    Created 2 February 2020 Updated 1 October 2022
  • Ocean and coastal extreme waves (8m), 2011

    Ministry for the Environment
    These data estimate the occurence of extreme wave events in coastal and oceanic waters for 2011, particularly for wave events where significant wave height exceeds a threshold of 8 metres and for a period of at least 12 hours. Significant wave height is defined as four times the square root of the variance of sea surface elevation due to wave motion. This...
    Created 2 February 2020 Updated 1 October 2022
  • 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 October 2022
  • Total suspended particulate matter concentrations at Penrose, Auckland, 1965–16

    Ministry for the Environment
    Total suspended particulate matter (TSP) consists of solid and liquid airborne particles that are smaller than 100 micrometres in diameter. Although, by weight, it is dominated by the larger particles it does also include the PM10 and PM2.5 sub-fractions that are responsible for most health effects, such as respiratory and cardiovascular disease, and some...
    Created 2 February 2020 Updated 1 October 2022
  • Land cover, 1996–2012

    Ministry for the Environment
    Land cover describes the extent of vegetation, water bodies, built environments, and bare natural surfaces (eg gravel and rock) across New Zealand. Measuring the composition of and changes in land cover can help us understand the pressures that different land uses are placing on the biodiversity and functioning of ecosystems. This measure reports on land...
    Created 2 February 2020 Updated 1 October 2022
  • Annual sea surface temperature difference from normal, 2015

    Ministry for the Environment
    The oceans store most of the excess energy accumulated due to increased greenhouse gases in the atmosphere warming the surface layer. These long-term increases in temperature caused by climate change are in addition to natural variability where ocean temperatures change in response to climate oscillations like the El Niño Southern Oscillation. Changes in...
    Created 2 February 2020 Updated 1 October 2022
  • Frost and warm days trend assessment, 1972–2016

    Ministry for the Environment
    The number of frost and warm days changes from year to year in response to climate variation, such as the warming pattern induced by El Niño. Climate models project we may experience fewer cold and more warm extremes in the future. Changes in the number of frost and warm days can affect agriculture, recreation, and our behaviour, for example, what we do...
    Created 2 February 2020 Updated 1 October 2022
  • Ocean and coastal extreme waves (4m), 2010

    Ministry for the Environment
    These data estimate the occurence of extreme wave events in coastal and oceanic waters for 2010, particularly for wave events where significant wave height exceeds a threshold of 4 metres and for a period of at least 12 hours. Significant wave height is defined as four times the square root of the variance of sea surface elevation due to wave motion. This...
    Created 2 February 2020 Updated 1 October 2022
  • Anomaly PED, 2013/14–2015/16

    Ministry for the Environment
    Potential evapotranspiration deficit (PED) can be thought of as a drought index. It is the difference between how much water could potentially be lost from the soil through evapotranspiration and how much is actually available. When PED is high, plants do not have the full amount of water available they need for growth. As our climate changes, increasing...
    Created 2 February 2020 Updated 1 October 2022