Frost and warm days trend assessment, 1972–2016

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Creative Commons Attribution 4.0 International

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5149
15
Added
12 Oct 2017

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

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 to keep safe on icy roads or whether to use air conditioning to keep cool.
A frost day is when the minimum temperature recorded is below 0 degrees Celsius. It refers to a temperature measured in an instrument screen 1.2m above the ground rather than a ‘ground frost’. We define a warm day as having a maximum recorded temperature above 25 degrees Celsius. The threshold of 25 degrees Celsius is chosen to represent days where action might be taken to keep cool (eg turn air conditioning on).
This dataset gives the trend in frost and warm days for New Zealand, the North and South Islands, and for all 30 sites.
For frost days we have used calendar years. For warm days we have used growing season (July 1 – June 30 of the following year).
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 89388
Data type Table
Row count 60
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Global and New Zealand temperature anomalies, 1909–2016

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Creative Commons Attribution 4.0 International

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5091
13
Added
14 Oct 2017

This dataset was first added to MfE Data Service on 14 Oct 2017.

This dataset compares temperatures anomalies from NIWA's 'seven-station' temperature series with three global temperature series.
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 89452
Data type Table
Row count 855
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Trends in global and New Zealand temperature anomalies, 1909–2016

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Creative Commons Attribution 4.0 International

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5024
10
Added
14 Oct 2017

This dataset was first added to MfE Data Service on 14 Oct 2017.

This dataset contains trends in temperatures anomalies from NIWA's 'seven-station' temperature series and three global temperature series.
Trends were assessed using linear regression 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 89455
Data type Table
Row count 4
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Number of warm days (above 25⁰ C) for selected sites (1975–2013)

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Creative Commons Attribution 3.0 New Zealand

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4851
22
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 52576
Data type Table
Row count 12194
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Temperature, Rainfall, Wind, Sunshine and Soil Moisture

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Creative Commons Attribution 3.0 New Zealand

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1966
295
Added
01 Oct 2015

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

27

Tait, A, Macara, G, & Paul, V (2014) Preparation of climate datasets for the 2015 Environmental Synthesis Report: temperature, rainfall, wind, sunshine and soil moisture. Client report no. WLG2014-91. Prepared for the Ministry for the Environment, 27p.

Document ID11311
File nametemperature-rainfall-wind-sunshine-and-soil-moisture.pdf
TypePDF
Size2.67 MB

Daily temperature, 1909 - 2019

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Creative Commons Attribution 4.0 International

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1944
133
Added
14 Oct 2020

This dataset was first added to MfE Data Service on 14 Oct 2020.

DATA SOURCE: National Institute for Water and Atmospheric Research (NIWA)
[Technical report available at www.mfe.govt.nz/publications/environmental-reporti...]

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency

This lowest aggregation dataset, was used to develop three ‘Our Atmosphere and Climate’ indicators. See Statistics New Zealand indicator links for specific methodologies and state/trend datasets (see ‘Shiny App’ downloads).
1) Temperature (www.stats.govt.nz/ndicators/temperature)
2) First and last frost days (www.stats.govt.nz/ndicators/frost-and-warm-days)
3) Growing degree days (www.stats.govt.nz/ndicators/growing-degree-days)

IMPORTANT INFORMATION
Due to the size of this dataset (111 MB), a 32-bit version of Microsoft Excel will only display/download ~ 1 million rows. A DBMS, statistical or GIS application is needed to view the entire dataset.

This dataset shows two measures of temperature change in New Zealand: New Zealand’s national temperature from NIWA’s ‘seven-station’ temperature series from 1909 to 2019, and temperature at 30 sites around the country from at least 1972 to 2019. For national temperature, we report daily average, minimum and maximum temperatures. We also present New Zealand national and global temperature anomalies.

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 105056
Data type Table
Row count 2049471
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Growing degree days trend statistics xlsx

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Creative Commons Attribution 3.0 New Zealand

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781
171
Added
08 Oct 2015

This item was first added to MfE Data Service on 08 Oct 2015

Document ID11508
File namegrowing-degree-days-trend-statistics-xlsx.xlsx
TypeXLSX
Size12.8 KB

National temperature trend statistics xlsx

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Creative Commons Attribution 3.0 New Zealand

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640
104
Added
13 Oct 2015

This item was first added to MfE Data Service on 13 Oct 2015

Document ID11654
File namenational-temperature-trend-statistics-xlsx.xlsx
TypeXLSX
Size11.0 KB

Macara, G, & Tait, A (2015). Infilling of missing climate data for the 2015 Environmental Synthesis Report: Temperature, Rainfall and Wind

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Creative Commons Attribution 4.0 International

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610
32
Added
17 Oct 2017

This item was first added to MfE Data Service on 17 Oct 2017

37

Macara, G, & Tait, A (2015). Infilling of missing climate data for the 2015 Environmental Synthesis Report: Temperature, Rainfall and Wind. Client report no. WLG2015-33. Prepared for the Ministry for the Environment, 37p.

Document ID21253
File namemacara-g-tait-a-2015-infilling-of-missing-climate-data-for-the-2015-environmental-synthesis-report-temperature-rainfall-and-wind.pdf
TypePDF
Size944 KB
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