Number of frost days for selected sites (1975–2013)

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Creative Commons Attribution 3.0 New Zealand

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2845
35
Added
01 Oct 2015

This dataset was first added to MfE Data Service on 01 Oct 2015.

The number of frost and hot days we experience each year can change in response to many climate factors, such as the warming pattern induced by El Niño. These numbers indicate the variations in our climate and are an important consideration in agriculture. They also affect our behaviour, for example, what we do to keep safe on icy roads or whether to use air conditioning to keep cool.
Further information can be found in:
Tait, A, Macara, G, & Paul, V. (2014) Preparation of climate datasets for the 2015 Environmental Synthesis Report: Temperature, Rainfall, Wind, Sunshine and Soil Moisture. Prepared for Ministry for the Environment. Available at data.mfe.govt.nz/x/Fwn9AL on the Ministry for the Environment dataservice (data.mfe.govt.nz/).
This dataset relates to the "Frost and hot days" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52575
Data type Table
Row count 12194
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Average estimated national groundwater volume per year, 1994-2014

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Creative Commons Attribution 3.0 New Zealand

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2855
25
Added
29 Sep 2015

This dataset was first added to MfE Data Service on 29 Sep 2015.

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.

Estimated national groundwater volumes by year and aquifer type (confined, or unconfined)
aquifer_ty = aquifer type
cubicm = estimated groundwater volume in cubic metres (m3)

This dataset relates to the "Groundwater physical stocks" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52528
Data type Table
Row count 42
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Asset value of water resources used for hydroelectric generation, 2007–15

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Creative Commons Attribution 3.0 New Zealand

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2869
7
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 Apr 2017.

Water is an important source of energy that contributes to New Zealand’s energy supply and the economy. As the main source of renewable energy in New Zealand, the use of water supports the production of the electricity industry. Tracking the value of this water as a natural resource – along with land form, slope, and elevation, which all help to generate hydroelectricity – shows the economic benefits derived from water use for current and future generations. Changes in flow regimes and climate can affect these values.

We report on the value of water resources used to generate hydroelectricity. This value includes both the returns received from current use (resource rent), and expected benefits from future use (the asset value).

Table ID 53615
Data type Table
Row count 54
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Soil health and land use - Soil health tests within target range, by land use, 2009-13

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Creative Commons Attribution 3.0 New Zealand

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2838
29
Updated
20 Apr 2017

This dataset was last updated on MfE Data Service on 20 Apr 2017.

UPDATED 21/04/2017
(See "Land domain updates" page for details; www.stats.govt.nz/browse_for_stats/environment/env...)

Different land uses put pressure on the land environment and can result in changes to soil health. Healthy soil supports the productivity of agriculture and forestry, and filters water to help prevent waterways becoming contaminated. Soils are considered healthy if they fall within the target ranges for the indicators of acidity, fertility, organic reserves, and physical status.

This dataset relates to the "Soil health and land use" measure on the Environmental Indicators, Te taiao Aotearoa website.

For raw data see "2015 land aotearoa soil health data for release.xlsx" at data.mfe.govt.nz/x/LTBnRL

Table ID 52550
Data type Table
Row count 4
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Livestock numbers, 2002–14

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Creative Commons Attribution 3.0 New Zealand

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2828
36
Added
28 Sep 2015

This dataset was first added to MfE Data Service on 28 Sep 2015.

Livestock numbers reflect changes in the number of farmed beef and dairy cattle, deer, and sheep across New Zealand. Livestock farming is a widespread land use in this country. It is important to monitor this use because it can affect the indigenous biodiversity, soil health, and water quality.

Column headings:
numbers = numbers of animals

This dataset relates to the "Livestock numbers" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52470
Data type Table
Row count 1110
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Winter rainfall trends, 1960–2016

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Creative Commons Attribution 4.0 International

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2846
17
Added
12 Oct 2017

This dataset was first added to MfE Data Service on 12 Oct 2017.

Winter rainfall trends for 30 representative sites from 1960–2016.
Rain is vital for life – it supplies the water we need to drink and to grow our food, keeps our ecosystems healthy, and supplies our electricity. New Zealand’s mountainous terrain and location in the roaring forties mean rainfall varies across the country. Changes in rainfall amount or timing can significantly affect agriculture, energy, recreation, and the environment. For example, an increase or decrease of rainfall in spring can have marked effects on crops or fish populations.
Trend direction was assessed using the Theil-Sen estimator and the Two One-Sided Test (TOST) for equivalence at the 95% confidence level.
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.

Table ID 89405
Data type Table
Row count 30
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Shark catch use (2003–2015)

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Creative Commons Attribution 3.0 New Zealand

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2830
31
Added
19 Oct 2016

This dataset was first added to MfE Data Service on 19 Oct 2016.

New Zealand waters have at least 117 species of chondrichthyans (sharks, rays, and other cartilaginous fish species). They are particularly vulnerable to overfishing because they are long-lived, mature slowly, and have a low reproductive rate. Chondrichthyans are important for healthy ocean ecosystems, and reporting their commercial catch and bycatch helps us understand the sustainability of our fisheries.

Table ID 53482
Data type Table
Row count 52
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Use of public conservation land, concessions, 2012–17

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Creative Commons Attribution 4.0 International

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2841
14
Added
16 Apr 2018

This dataset was first added to MfE Data Service on 16 Apr 2018.

One third of our land area is held as public conservation land and managed by the Department of Conservation (DOC) to protect natural and cultural heritage, retain areas of wilderness and enable recreation opportunities. Although the use of public conservation land makes an important socio-economic contribution at the local, regional and national level, increasing human activities on our protected areas can put pressure on these environments and degrade their cultural and aesthetic value.

This measure reports on the number of active recreation and non-recreation concessions by activity in each financial year, and the number of active concession operators (concessionaires) by activity in each financial year.

Table ID 95349
Data type Table
Row count 432
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Benzene concentrations 2012–13

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Creative Commons Attribution 3.0 New Zealand

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2838
15
Added
16 Sep 2015

This dataset was first added to MfE Data Service on 16 Sep 2015.

Benzene is a volatile organic compound. Motor vehicle use and home heating are the main sources of airborne benzene emissions. Natural sources include volcanoes and forest fires. Benzene can affect the nervous system and is associated with some forms of cancer.

Benzene is emitted by human-made (motor vehicles, burning wood or coal for home heating, and some industrial activities) and natural (volcanoes and forest fires) sources.

Column headings:
- Con_mcg_m3 = Concentration in micrograms per cubic metre (μg/m3)

This dataset relates to the "Benzene concentrations" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52429
Data type Table
Row count 16
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Oceanic sea surface temperature, 1993–2016

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Creative Commons Attribution 4.0 International

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2822
29
Added
12 Oct 2017

This dataset was first added to MfE Data Service on 12 Oct 2017.

We used NIWA’s sea-surface temperature archive, which is derived from the Advanced Very High Resolution Radiometer (AVHRR) satellite data it receives from the US National Oceanic and Atmospheric Administration. The archive provides high spatial (approximately 1km) and high temporal (approximately six-hourly in cloud-free locations) resolution estimates of sea-surface temperatures over the New Zealand region, dating from January 1993. Uddstrom & Oien (1999) and Uddstrom (2003) describe the methods used to derive and validate the data.
Our data extends from about 30°S to 55°S, and from 160°E to 170°W and is grouped into five areas: the exclusive economic zone (EEZ), the Chatham Rise, northern subtropical waters, subantarctic waters, and the Tasman Sea.
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.

Table ID 89406
Data type Table
Row count 960
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
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