-
Global production of ozone depleting substances, 1986–2015
Ministry for the EnvironmentOzone in the stratosphere is destroyed in a catalytic reaction with a range of chemical species (mainly CFCs) that are emitted through human activities. The emission of these... -
Total suspended particulates concentration in Auckland, 1965–2013
Ministry for the EnvironmentTotal suspended particulates (TSP) consist of all solid particles and liquid droplets up to 100 micrometres (μm) in diameter (ie when compared with PM10 and PM2.5, TSP is the... -
Estimated fur seal captures in trawl and longline fisheries by fishery type (...
Ministry for the EnvironmentSea lions and fur seals are the protected species most directly affected by fisheries in New Zealand waters, along with seabirds and dolphins. Trawling poses a risk to both... -
Seasonality of PM10 exceedances
Ministry for the EnvironmentParticulate 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... -
Trends in greenhouse gas concentrations at Baring Head, 1972–2016
Ministry for the EnvironmentWe report on GHG concentrations in ‘clean air’ measured at Baring Head, near Wellington. These measurements give us a good idea of global concentrations and help us infer... -
Total column ozone, Lauder, assimilated series (1978-2013)
Ministry for the EnvironmentOzone (O3) is a gas that is of interest in two regions of Earth’s atmosphere – at ground level and in the upper atmosphere (stratosphere). Stratospheric ozone absorbs... -
Estimated long-term soil erosion - Sediment load in rivers, by region, 2012
Ministry for the EnvironmentSoil erosion reduces the productive capacity of land. Sediment entering waterways affects water quality, storage capacity, and biodiversity. Soil erosion in the North Island is... -
Lake water quality state percentiles, by monitoring site, 2009-2014
Ministry for the EnvironmentWhen nutrients accumulate in lakes (referred to as ‘nutrient enrichment’) above certain levels, they can make the lakes murky and green with algae, and lower oxygen levels.... -
Status of widespread indigenous trees - Widespread indigenous tree species, 2...
Ministry for the EnvironmentEight indigenous tree species, spanning a range of ecological niches, were surveyed twice (between 2002 and 2014) as part of a vegetation monitoring programme. The data from... -
Melanoma registration trends, 1996–2013
Ministry for the EnvironmentNew Zealand and Australia have the world’s highest rates of melanoma, the most serious type of skin cancer. Melanoma is mainly caused by exposure to ultraviolet (UV) light,... -
Cumulative overlap of coastal trawl footprint by BOMEC class (2008–12)
Ministry for the EnvironmentSeabed trawling, when fishing nets are towed near and along the ocean floor, can physically damage seabed (benthic) habitats and species. It can also stir up sediment from the... -
Nitrogen dioxide concentration at state highway areas 2007–13
Ministry for the EnvironmentNitrogen dioxide (NO2) is a gas. It can be emitted directly into the air but is most often formed when nitric oxide (NO) emissions react with other chemicals in the air.... -
Trends in ozone concentrations, 1978–2017
Ministry for the EnvironmentNIWA supplied ozone data in two forms, with different starting dates: - measurements made using a Dobson spectrophotometer (number 72), from 1987 - data assimilated from... -
Melanoma rates (1996–2013)
Ministry for the EnvironmentSkin cancers such as melanoma are linked to exposure to ultraviolet radiation. New Zealand has one of the world’s highest rates of melanoma. This dataset relates to the... -
Influenza like illness weekly consultation rates, 2000–16
Ministry for the EnvironmentInfluenza is a potentially life-threatening virus that spreads quickly from person to person. It is a significant public health issue in this country, with 10–20 percent of New... -
Day of year column ozone Dobson spectrophotometer measurements (1987–2013)
Ministry for the EnvironmentOzone (O3) is a gas that is of interest in two regions of Earth’s atmosphere – at ground level and in the upper atmosphere (stratosphere). Stratospheric ozone absorbs... -
Influenza hospital discharges by week (2013)
Ministry for the EnvironmentInfluenza is a potentially life-threatening virus that spreads quickly from person to person. It is a significant public health issue in this country, with 10–20 percent of New... -
Annual ground and sea lightning strikes (2001–14)
Ministry for the EnvironmentLightning is the discharge of electricity from thunderstorms. Ground strikes can cause significant damage to property and infrastructure, and injure or kill people and... -
Greenhouse gas concentrations at Baring Head, 1972–2016
Ministry for the EnvironmentWe report on GHG concentrations in ‘clean air’ measured at Baring Head, near Wellington. These measurements give us a good idea of global concentrations and help us infer... -
Lightning Trends, 2001–2016
Ministry for the EnvironmentLightning 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,...