Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search


It’s the warmest winter on record - again

Aotearoa New Zealand has just experienced its warmest winter on record - well exceeding the previous record which was set just last year.

NIWA official climate data shows winter 2021 (June to August) was 1.32°C degrees above average last winter it was 1.14°C above average.

The figures, derived from the NIWA "seven-station" temperature series which extends back to 1909, also show seven of the 10 warmest winters on record have occurred since 2000.

NIWA meteorologist Nava Fedaeff also said there were 76 locations across the country that experienced a record or near-record warm winter.

To put this winter’s record warmth in perspective, Ms Fedaeff delved into historic weather records and found that the last time New Zealand experienced a similar sequence of events was 50 years ago. The winter of 1970 was at the time New Zealand’s warmest winter on record only to be beaten by the winter of 1971.

"What was considered to be unusually warm at the time is no longer considered unusual. The winter of 1971 now stands in 13th place of the temperature rankings while the winter of 1970 is 18th."

Ms Fedaeff also said what may have been considered record-breaking in 1970 is now considered near average. "For instance, the once record-breaking winter 1971 is 0.75C cooler than the winter we have just experienced."

A key difference can be found in carbon dioxide concentrations measured by NIWA at Baring Head, near Wellington. In the early 1970s they were 320 parts per million - today they are 412 parts per million.

So what did the two periods have in common? The years 1970 and 1971 were both La Niña years featuring warmer than usual coastal sea temperatures and higher than normal pressure over and to the east of the country which led to more northerly and north-easterly winds than normal.

The winters of 2020 and 2021 were also influenced by La Niña, warm coastal waters, frequent high pressure and more northerly and north-easterly winds than normal.

"These similar winters, decades apart, show us that there are key natural ingredients to getting a warm winter but adding climate change to the mix is like taking the same recipe and swapping plain flour for self-raising.


Download link:

© Scoop Media

Business Headlines | Sci-Tech Headlines


Consumer NZ: Buy-now, Pay-later Raking In $10m+ In Late Fees Annually

A Consumer NZ survey has found buy-now, pay-later services are costing shoppers more than $10 million a year in late fees. Close to four out of 10 Kiwi consumers use buy-now, pay-later services, such as Afterpay, Laybuy and Zip... More>>

Westpac: Catherine Mcgrath Appointed New Zealand CEO

Westpac Group CEO Peter King and the Westpac New Zealand Board today announced the appointment of Catherine McGrath as Chief Executive Officer, Westpac New Zealand... More>>

Amazon: AWS To Open Data Centres In New Zealand

Today, Amazon Web Services (AWS), announced plans to open an infrastructure region in Aotearoa New Zealand in 2024. The new AWS Asia Pacific (Auckland) Region will consist of three Availability Zones (AZs) and join the existing 81 Availability Zones across 25 geographic AWS Regions at launch... More>>


Statistics: Surge In Imports Results In Record Monthly Trade Deficit
Imports increased $1.8 billion in August 2021 compared with August 2020, resulting in a record monthly trade deficit of $2.1 billion, Stats NZ said today. Exports were little changed, down $42 million. "This is a larger deficit than normal because of higher values for imports.. More>>

Fonterra: Completes reset, announces annual results and long-term growth plan out to 2030

Fonterra Co-operative Group Limited today announced a strong set of results for the 2021 financial year, reflected in a final Farmgate Milk Price of $7.54, normalised earnings per share of 34 cents and a final dividend of 15 cents... More>>

Statistics: GDP rises in the June 2021 quarter

Gross domestic product (GDP) rose by 2.8 percent in the June 2021 quarter, following a 1.4 percent increase in the March 2021 quarter, Stats NZ said today. June 2021 quarter GDP was 4.3 percent higher when compared with the December 2019 quarter... More>>