Category: Climate science

Salinger: New Zealand is drying out, and here’s why

In this guest post Jim Salinger (currently working in Italy, but soon to return to these shores), takes a look at the climate influences on last year’s severe New Zealand drought. It first appeared on The Conversation.

Over 2012 and 2013, parts of New Zealand experienced their worst drought in nearly 70 years. Drought is the costliest climate extreme in New Zealand; the 2012-2013 event depressed the country’s GDP by 0.7-0.9%. The drought of 1988-1989 affected 5,500 farms, pushing some farmers to the wall. But what does a climate-changed future hold?

Recent evidence confirms that New Zealand on the whole is getting dryer. And we’re beginning to understand why — increasing greenhouse and ozone-depleting gases are driving changes in the atmosphere, with impacts far beyond New Zealand.

Continue reading “Salinger: New Zealand is drying out, and here’s why”

Carbon News 13/10/14: foresters in firing line

Anxious foresters await review of foreign credits ban

A controversial decision to make foresters the only emitters banned from using cheap foreign carbon credits to offset their greenhouse gas emissions is under review. The provision was slipped through without warning as part of the Government’s Budget in May, and came into effect immediately.

Business poser: are you creating value, or destroying it?

New Zealand is leading the world on integrated reporting but our business leaders are still not taking it seriously enough, latest data shows.

Beehive stays silent on emissions target

The Government remains mum on New Zealand’s 2030 emissions reduction target. New Zealand did not make any mention of its 2030 target at last month’s Climate Summit in New York, at which United Nations Secretary General Ban Ki-moon asked world leaders to give an indication of the commitments they would make at international climate change negotiations in Paris in December.

New Zealand is drying out … and here’s why

Over 2012 and 2013, parts of New Zealand experienced their worst drought in nearly 70 years. Continue reading “Carbon News 13/10/14: foresters in firing line”

Extremes report 2013: NZ drought and record Aussie heat made worse by warming

The latest climate extremes report finds that 9 out of 16 extreme weather events from last year were influenced by climate change. In particular, the conditions that led to New Zealand’s severe North Island drought — the worst for 41 years, estimated to have cost the economy NZ$1.3 billion — were made more likely by the effects of continued warming. Australia’s hottest ever year and run of record-breaking heatwaves also had humanity’s fingerprints all over it. The new research — Explaining Extreme Events of 2013 from a Climate Perspective [pdf] — published as a special edition of the Bulletin of the American Meteorological Society, is the latest in a series of reports designed to look at weather extremes soon after they happen, and look for signs of the influence of climate change.

The NZ paper, The role of anthropogenic climate change in the 2013 drought over North Island, New Zealand by Luke Harrington, Suzanne Rosier, Sam M. Dean, Stephen Stuart, and Alice Scahill (page s45 in the pdf), finds that a long term trend towards increasing summer high pressure systems over the North Island — seen in climate models as the system warms — has increased the risk of drought substantially.

No fewer than 5 studies in the new report found clear links between Australia’s record-breaking 2013 heat and the influence of human-induced warming, as explained by The Conversation here.

Climate change is already increasing the likelihood of heatwaves occurring in Australia and the temperatures we experience during these heatwaves. Extremely hot months, seasons and years are already more likely in Australia.

This human handprint will likely increase the future risk of extremely warm days, months, season and years in Australia. We will likely also see an increase in the risk of heatwaves and dry conditions acting in combination with heat to produce drought.

A summary of the report’s contents is available from NOAA, Climate Central has a very nice timeline, and The Guardian does it with pictures. Strangely, given the subject matter, only TV3 picked up on the NZ drought link (basing their story on a press release from the Green Party), while the NZ Herald chose to run an AFP story that led with the Aussie heatwaves and only mentioned the NZ drought in passing. Neither NIWA nor VUW chose to issue press releases about the study, despite its obvious newsworthiness and relevance to the NZ agricultural community.

[Update 2/10: Stuff.co.nz finally covers the story, with quotes from NIWA’s Sam Dean.]

Carbon News 29/9/14: Key challenged over climate impacts on Pacific islands

Memo John Key: look Pacific Island leaders in the eye

The Government is being challenged to invite the leaders of the Marshall Islands, Tuvalu and Kiribati to come and tell Parliament what they think of New Zealand’s climate change policies. Support to help Small Island Developing States move to renewable energy is one of five measures New Zealand outlined to last week’s United Nations Climate Change Summit in New York. New Zealand said that it will support the Small Island Developing States Lighthouses Initiative in addition to the $100 million it is already investing in clean energy in the Pacific.

Renewables make mark on emissions figures

Increasing generation from renewables is continuing to drive a massive drop in greenhouse gas emissions from electricity in New Zealand. For the second quarter in a row, emissions from electricity in the three months to August were down on the same period last year, latest government figures show.

New York talked the talk, but we’ll have to wait and see who heard

At the end of his summit meeting on the climate crisis, UN Secretary General Ban Ki-moon put out a list of accomplishments festooned with 46 bullet points, some of them marking concrete new pledges, others diaphanous phrases.

MIA … but it doesn’t mean China’s not interested

There were a few notable absentees among the more than 120 world leaders gathered in New York for last week’s United Nations Climate Summit — and perhaps most notable of all was the head of the world’s highest-emitting nation, China’s President Xi Jinping.

Do something, big business warns political leaders

Many of the biggest hitters in the global financial community, together managing an eye-watering $24 trillion of investment funds, have issued a powerful warning to political leaders about the risks of failing to establish clear policy on reducing greenhouse gas emissions. Continue reading “Carbon News 29/9/14: Key challenged over climate impacts on Pacific islands”

Where do we go but nowhere?

New Zealand’s general election is over. The National Party has won itself another three years in government. With a probable overall majority and the support of three fringe MPs, prime minister John Key and his cabinet will be able to do more or less what they like. Given the government’s performance on climate matters over the last six years — turning the Emissions Trading Scheme into little more than a corporate welfare handout while senior cabinet ministers flirt with outright climate denial — and with signals that they intend to modify the Resource Management Act to make it easier to drill, mine and pollute, it’s hard to avoid the conclusion that the next three years are going to see New Zealand’s climate policies slip even further out of touch with what’s really necessary.

I don’t want to get into a discussion of why opposition parties were unable to persuade voters to unseat Key & Co: that’s being widely canvassed. I do want to consider what might be done to prevent the next three years being as bad as the last six from a climate policy perspective.

One thing is very clear: the climate issue is not going away. While carbon emissions hit new records, the UN secretary general Ban Ki-Moon has been trying to galvanise world leaders to take the issue seriously. Hundreds of thousands of ordinary citizens have taken part in people’s climate marches around the world. And the climate news remains, as ever, gloomy. Ice melts, floods surge and sea levels continue to rise. “Business as usual” continues, but is being challenged on many levels.

Gareth Morgan, the motorbike adventurer, philanthropist and prolific author, is no stranger to the climate debate. He understands the issue in the way only someone who has written a book on the subject can ( 😉 ). In a recent blog post, Morgan looked at what it might take to get climate action in the current New Zealand political climate. His conclusion? That we need a new “bluegreen” political party.

But for me, the most frustrating aspect of the election result is the entrenched inability of the Green Party to grasp that the environmental message is something that appeals to middle-of-the-road New Zealanders, not just Lefties.

Sadly the Green Party’s policies for environmental sustainability have always come with a nasty fishhook – the out-dated edict that social justice can only be achieved by rehashed socialism. This has rendered the Green Party a real melon to mainstream New Zealand – a watermelon to be precise, far too red on the inside for middle New Zealand to stomach.

For me, the frustrating thing is that the other Gareth’s ((No, not that other Gareth. This one.)) political analysis completely misreads what’s going on at the same time as his analysis of National government’s performance on climate over the last six years is absolutely spot on….

Continue reading “Where do we go but nowhere?”