13/01/2019

How Is Climate Change Affecting Australia?

Climate Reality

Few countries see almost every side of the climate crisis as clearly – and have as much to lose – as Australia.


Tourists know the country for the koalas and kangaroos that fill nature shows and iconic places like the Sydney Opera House that seem to appear in every Hollywood film shot Down Under. And then there’s the timeless mystery of vegemite.
But talk to many climate scientists and they’ll tell you that Australia is especially vulnerable to the climate crisis, putting all this wonder at risk. Talk to many activists and they’ll tell you it’s no wonder, since Australia exports more coal than any other nation on Earth.
But there’s good news, too. The country is also home to an incredible community of activists, who’ve fought potentially world-changing developments like the Carmichael coal mine tooth and nail.
So what’s at stake in the fight against coal and for climate solutions in Australia? Here are four key ways climate change is impacting the nation and its people – and one big way you can help turn Australia’s climate-fighting potential into a reality.

Heat and Drought
Here’s the climate reality: Since 1910, Australia's climate has warmed by more than 1 degree Celsius (or 1.8 degrees Fahrenheit). In fact, without action, Australia is expected to warm as much as 5 degrees Celsius (9 degrees Fahrenheit) by 2090.
Simply put, Australia is already a hot and dry country and it’s expected to generally get hotter and drier without action on climate change. And make no mistake: An increase of 5 degrees Celsius (or 9 degrees Fahrenheit) is a huge deal.
Consider this: “Scientific records over the past million years show that as periodic ice ages ended, global average temperatures rose a total of 4-7 degrees Celsius over the course of about 5,000 years.” What happens in Australia when they rise by about that much in the space of less than 200 years? It’s uncharted territory.
We’re already seeing the impact of rising temperatures today. In January 2018, temperatures in Sydney soared to over 47 degrees Celsius (about 117 degrees Fahrenheit). It was the hottest day the city had seen in nearly 80 years. It’s true, heatwaves are not a new phenomenon. But climate change is making heatwaves more common, more severe, and longer lasting. Heatwaves have real impacts on human health and wellbeing – leading to heat exhaustion or even heat stroke.

Image: Centers for Disease Control, Climate Change and Extreme Heat: What You Can Do to Prepare
There’s also a direct link between a hotter world and more drought. Andrew King, a climate scientist at the University of Melbourne, explained the connection to the Guardian:
“In general climate change is exacerbating drought, mainly because in a warmer world we experience more evaporation from the surface, and we project for that to continue in the future. So when it does rain, more of that water is likely to be lost to the atmosphere through evaporation than before human-caused climate change.”
In 2018, Australia battled “its worst drought in living memory.” And climate models indicate that, as rain patterns continue to change and heat continues to rise, southern Australia in particular will spend more and more time in drought going forward – unless we act.



Bushfires / Wildfires
Here’s the climate reality: Fire season in Australia has become longer and longer since the 1950s. Bushfires (what the Northern Hemisphere calls wildfires) are also becoming more extreme, especially in southern and eastern parts of the country.
We already know that Australia is becoming hotter and drier due to climate change – making the perfect conditions for bushfire. Plants dry up and die, the ideal kindling to fuel a fire.
At our Climate Reality Leadership Corps Training in Los Angeles, Ken Thompson (former deputy fire chief of the state of New South Wales) reported that fire season now runs for nine months out of the year in Australia. He explained, “The climate is changing and we’re seeing the effects of that on the frontline by more and more fires, more frequently, and more severe.”
“Trends from 1978 to 2017 in the annual (July to June) sum of the daily Forest Fire Danger Index—an indicator of the severity of fire weather conditions.” Image: Australian Government Bureau of Meteorology, State of the Climate 2018, cc by 3.0 AU
At the end of 2018, the Guardian characterized fire conditions in the nation as “catastrophic” as residents endured an extreme heatwave. In fact, at some points in mid-November 2018, the eastern state of Queensland battled nearly 200 fires – something Annastacia Palaszczuk, Queensland’s premier, described as “off the charts.” She went on to say, “No one has ever recorded these kinds of conditions ever in the history of Queensland.”

Agriculture and Livestock
Here’s the climate reality: Farmers depend on a steady climate to grow food and raise livestock. The climate crisis makes it increasingly difficult for farmers to grow food for Australia.
As Australia’s climate changes, every type of farmer will be affected – from those who raise dairy cows to fruits and vegetable producers to wine growers and everything in between. According to Melbourne Sustainability Society Institute’s report, Appetite for Change: Global Warming Impacts on Food and Farming Regions in Australia:
  • Dairy cows can’t take the heat! “Heat stress on dairy cows typically reduces milk yield by 10-25 percent, and by up to 40 percent in extreme heatwave conditions.”
  • The largest fruit industry in Australia? Wine grapes. And “up to 70 percent of Australia’s winegrowing regions will be less suitable for grape growing by 2050.”
  • Carrots are “the nation’s most valuable vegetable export… Higher temperatures associated with climate change are likely to make carrot production less viable in warmer areas with shifts to cooler regions such as Tasmania.” (To add insult to injury, warmer temperatures also make carrots less tasty and change their texture.)
One Australian farmer, John Said, explained it well: “There’s no doubt climate change is a reality now. We’re seeing abnormal temperatures. We’re seeing abnormal fluctuations in weather patterns… Climate change will certainly disrupt food security, there’s no doubt about that.”

The Ocean and the Great Barrier Reef
Here’s the climate reality: The Great Barrier Reef is larger than the Great Wall of China and the only living thing on our planet that can be seen from outer space. It might seem too huge to hurt, but our carbon dioxide emissions are killing the reef.
Ever heard of ocean acidification? We explained it in a blog from 2016:
“Our oceans are an incredible carbon sink — they absorb about 25 percent of the carbon dioxide humans produce every year. But this is changing sea surface chemistry dramatically: when carbon dioxide is absorbed by the ocean, it dissolves to form carbonic acid. The result, not surprisingly, is that the ocean becomes more acidic, upsetting the delicate pH balance that millions and millions of organisms rely on.”
Our oceans are being hit hard by a double whammy: they’re becoming warmer and more acidic – all because of greenhouse gas emissions. Since 1910, Australia’s ocean surface temperatures have warmed by about 1 degree Celsius (or 1.8 degrees Fahrenheit) .



Australia’s iconic Great Barrier Reef has been hit exceptionally hard by both factors. Stressed by warmer and more acidic waters, coral expels the colorful algae it depends on to survive. The coral turns white – known as “coral bleaching” – and unless the coral has a chance to recover and the algae can return, it can die, upsetting entire marine ecosystems.
This can happen on a vast scale, in what’s called a “mass bleaching event.” In 2016, the Great Barrier Reef experienced a mass bleaching event that scientists say was made 175 times more likely by climate change.
Coral can recover from bleaching but that doesn’t always happen. In fact, about 30 percent of corals on the reef have died since the 2016 mass bleaching event.
Marine life depends on the Great Barrier Reef – and so do Australians. A Deloitte Access Economics report values the reef at over AUD $57 billion (over $40 billion in US dollars). The reef supports fisheries, helps employ more than 64,000 people, and brings tourists from around the globe to see this World Heritage Site. If we’re going to save the Great Barrier Reef, we must act on climate.
It’s clear that Australia has a lot to lose to climate change if we don’t take action. Unfortunately, much like in the US, Australia’s federal government has not risen to the challenge. Our friends at Australian climate change organization The Climate Council said it well: “Australia lacks credible national climate policy to drive down greenhouse gas pollution. This is why we are not on track to meet even our woefully inadequate 26-28 percent emissions reduction target for 2030.”

What can change this? You.
From June 5–7, 2019 Climate Reality will be training Climate Reality Leader activists in Brisbane, Australia. Climate Reality Leaders are everyday people who decide to help lead the fight for climate solutions in their own nation and around the world.
Come to Brisbane and you’ll spend three days working with former Vice President Al Gore and world-renowned scientists and communicators learning about the climate crisis and how together we can solve it.
Join us and gain the skills, knowledge, and network to shape public opinion, influence policy, and inspire your community to act at this critical time. Learn more now and apply to join us in Brisbane before March 31!

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The Stunning Chart Revealing Australia's Record-Breaking Run Of Rising Temperatures

FairfaxNicole Hasham

If there was any question Australians are enduring a more extreme, topsy-turvy climate, look only to the month just gone.
In early December, Cyclone Owen unloaded 678 millimetres of rain in one day on the tiny North Queensland town of Halifax. It was a new December daily rainfall record.


The Bureau of Meteorology gives a snapshot of the Australian climate including rainfall, temperature and significant weather events. 

By mid-December, a month's worth of rain fell in parts of Victoria in 24 hours. On December 20 it was Sydney’s turn when a monster thunderstorm dropped giant hail stones - some the size of cricket balls. The insurance bill is nearing $675 million.
Then, the sun came out. By month’s end, much of Australia was baking under torrid temperatures. Marble Bar in Western Australia reached 49.3 degrees - the third-highest December temperature recorded anywhere in the country.
The record-breaking events are outlined in the Bureau of Meteorology’s 2018 climate statement released on Thursday, which confirmed the nation experienced its third-warmest year on record in 2018. The bureau attributed the year of meteorological extremes to both climate change and natural variability.
The national mean temperature in 2018 was 1.14 degrees above average. Nine of the 10 warmest years on record have occurred since 2005.

Australian mean temperature anomaly
Based on the average for 1961-90. Source: BOM

The bureau’s senior climatologist Lynette Bettio said every state and territory experienced above-average day and night temperatures last year.
“The average maximum temperature for the country as a whole was particularly warm, sitting 1.55 degrees above the 1961–1990 average, making 2018 Australia's second warmest year on record for daily high temperatures,” Dr Bettio said.
Australia's September rainfall was the lowest on record. Nationally, rainfall in 2018 was the lowest since 2005 and 11 per cent below average, while rainfall in some areas was significantly further below normal.
“Large areas of southeastern Australia experienced rainfall totals in the lowest 10 per cent on record, which exacerbated the severe drought conditions,” Dr Bettio said.

Australia's rainfall in 2018
Source: Bureau of Meteorology
“NSW had its sixth driest year on record, while the Murray-Darling Basin saw its seventh-driest year on record.
"We did see some respite in the final three months of the year with decent rainfall in the east of the country.”
In other significant weather events last year, Broome broke its annual rainfall record just two months into the year and Tropical Cyclone Marcus was the strongest to affect Darwin since Tracy in 1974.
In August and September, up to 100 bushfires were active across NSW, Queensland and Victoria when warm, dry conditions brought an early start to the bushfire season.

Maximum temperatures 2018
Source: Bureau of Meteorology

The bureau said Australia was strongly influenced by both natural variability and climate change in 2018. Natural drivers included sea surface temperatures in the southern Tasman Sea which rose to “exceptionally high levels” in late 2017 and early 2018, contributing to warm overland conditions.
The report said Australia's climate “is increasingly influenced by global warming” and the nation has warmed by just over one degree since 1910. Most warming has occurred since 1950.
“The background warming trend can only be explained by human influence on the global climate,” the bureau said.

Mean temperatures 2018
Source: Bureau of Meteorology

The Morrison government has been riven with internal tensions over climate change policy. Under the Paris climate accord, Australia has vowed to reduce greenhouse emissions, based on 2005 levels, by 26 per cent before 2030.
The government says Australia will meet that target "in a canter” however this claim has been contradicted by international bodies and the government’s own data.
Most recently, figures released by the Department of Environment and Energy last month showed that on current trends Australia will reduce emissions by just 7 per cent on 2005 levels by 2030, a massive 19 percentage points or two thirds of the way short of the Paris agreement.
A major report prepared by the United Nations body for climate change, the Intergovernmental Panel on Climate Change, in October said coal-generated electricity must be phased out globally by 2050 if the world is to avoid the most catastrophic impacts of global warming, including the total destruction of the Great Barrier Reef.


Australia could use a little-known loophole to help meet up to half its Paris climate commitments in a move that analysts warn could undermine the global accord. 

It said radical, swift efforts must be taken to curb greenhouse gas pollution and keep the global temperature increase below the critical 1.5 degree threshold.

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