by Cap Allon, October 4, 2019 in Electroverse
New Zealand’s average temperature last month –for the country as a whole– was below the 1981-2010 September avg., Niwa has said in its Monthly Climate Summary.
An unusual warming of the atmosphere high above Antarctica –called a Sudden Stratospheric Warming event (SSW)– assisted in making last month the fourth coldest September in New Zealand this century.
There have only ever been two SSWs recorded in the Southern Hemisphere, previous to this years — one in September 2002 (major) and another in September 2010 (minor).
The 2002 SSW event resulted in New Zealand experiencing a significant cold outbreak in October while the 2010 event was associated with record rainfall during September.
by Cap Allon, Sep. 10, 2019 in Electroverse
Frost-fighting efforts have shifted into overdrive on New Zealand’s South Island as a brutal Antarctic blast rips through the region — the first blast of many, according to NIWA forecasts.
Otago, a southeastern region of NZ’s South Island, is home to the buds of millions of dollars worth of stone-fruit. Forecasters say temperatures in central Otago plummeted to a bruising -5C (23F) on Tues morning, Sept 10.
Sprinklers were turned-on so as to deliberately encase the tender fruit in a protective clear-ice casing — an age-old method of frost-fighting. While helicopters and wind machines were also drafted-in to blow warm air over the orchards.
“It’s all hands on deck,” said Tim Jones, chief executive of 45 South Orchard and Packhouse in Cromwell, who expects the cold to stick around for at least another month.
“NIWA has got some news out there that this could be a challenging spring,” Jones added.
New Zealand has a higher-than-usual risk of sharp cold snaps and unsettled weather during the first half of the season, according to the National Institute of Water and Atmospheric Research (NIWA).
A rare sudden stratospheric warming (SSW) event is occurring 30-50 km above Antarctica which is already leading to unusual and extreme weather in parts of the Southern Hemisphere.
by Cross et al., November 29, 2018 in CO2Science
Cross, E.L., Harper, E.M. and Peck, L.S. 2018. A 120-year record of resilience to environmental change in brachiopods. Global Change Biology 24: 2262-2271.
In light of all their findings, Cross et al. conclude that “these rhynchonelliform brachiopods have therefore been unaffected in their abilities to construct and maintain their extensive skeletons by the change in ocean acidity and temperature over the last 120 years.” And this is a noteworthy conclusion, given that C. inconspicua is one of the most calcium-carbonate-dependent species globally, and is therefore presumed to be highly susceptible to ocean acidification. It would thus appear that proper incorporation of species’ adaptation and/or acclimation potentials is essential if scientists are to get predictions of the impacts of ocean acidification on marine life correct.
by Geological Society of America, May 3, 2018 in ScienceDaily
Over the last 5000 years, Mount Taranaki volcano, located in the westernmost part of New Zealand’s North Island, produced at least 16 Plinian-scale explosive eruptions, the latest at AD 1655. These eruptions had magnitudes of 4 to 5, eruptive styles, and contrasting basaltic to andesitic chemical compositions comparable to the eruptions of Etna, 122 BC; Vesuvius, AD79; Tarawera, 1886; Pelée, 1902; Colima, 1910; Mount Saint Helens, 1980; Merapi, 2010; and Calbuco, 2015.
by Rick Wilkinson, April 12, 2018 in Oil&GasJournal
The New Zealand government has made the surprise announcement that it will not grant any new permits for offshore oil and gas exploration.
The Labor government of Prime Minister Jacinda Ardern said the move would not be retrospective. The country’s 22 existing offshore exploration permits along with any discoveries made in them could still lead to the granting of production licenses of up to 40 years duration.