24/06/2018

Special Report: A 30-Year Alarm On The Reality Of Climate Change

AXIOS - 

Three decades have passed since then-NASA scientist James Hansen testified before the Senate Energy committee and alerted the country to the arrival of global warming.
Data: NASA's Goddard Institute for Space Studies; Graphic: Harry Stevens/Axios
  • The spinning globes compare the average temperature of the Earth's surface during the 30-year periods before and after Hansen's testimony, relative to the average surface temperature from 1901–2000.
  • The land surface temperature data is from a GISS analysis, while the ocean temperature data comes from NOAA. The smoothing radius was set to 1,200 kilometers.
Why it matters
The predictions of the world's leading climate scientists have come true, with dire consequence for the planet.
  • In the 30-year period prior to Hansen’s testimony, the Earth’s surface was, on average, less than 0.2°F warmer than the 20th-century average. In the 30 years since, the planet’s surface has, on average, undergone a six-fold temperature increase.
  • Hansen's temperature projections weren't exactly on target, since he projected a slightly higher amount of warming than what has occurred, but about two-dozen climate scientists told Axios that overall, his main conclusions were right.
In his June 23, 1988 testimony, Hansen made three key points:
  1. The Earth has gotten warmer.
  2. So warm, in fact, that the temperature trend was almost certainly due to the greenhouse effect, which is enhanced by emissions of gases like carbon dioxide and methane from burning fossil fuels.
  3. As a result, summer heat waves and other extreme weather events will become more common.
"The greenhouse effect has been detected, and it is changing our climate now,” Hansen said. When he spoke, 1988 was on track to become the hottest year of all-time. Since then, that record has been broken six more times – in 1990, 1998, 2010, 2014, 2015 and 2016.
In an interview with the Guardian this week, Hansen gave a bleak assessment of the last thirty years. “All we’ve done is agree there’s a problem,” he said. “We haven’t acknowledged what is required to solve it.”
Be smart
Uncertainty is often cited as a reason for not addressing climate change, but the longer we go without addressing it, the harder it will be to cut emissions and avert major impacts.
As Andrea Dutton, a climate scientist at the University of Florida, told Axios:
"The true debate lies in the solutions and in mobilizing the social and political will to act upon our knowledge.  Deciding not to act is a choice itself, and one that we cannot correct later.  The time to act is always now.  Because the longer we wait, the worse the outcomes will be."
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How Your Taxes Subsidise Fossil Fuels

Market Forces

There are a number of national tax-based subsidies that encourage fossil fuel production and consumption, adding up to a huge total of almost $11 billion each year.
Using estimates from the federal government’s Tax Expenditure Statement and Treasury papers, the table below lists a range of measures within the Australian federal tax system that encourage the production and use of fossil fuels.
This is Australian taxpayers’ money subsidising fossil fuels.
These figures are only ever going to be a low estimate.
Fossil fuel subsidies can be difficult to find in the tax system and it is likely that some will have been overlooked.
These figures do not include state-level subsidies, direct government handouts to coal, oil and gas projects, or public financing of international projects through export credit agencies or international financial institutions.
* Values represent the middle value of a range estimated by Treasury. i.e. 5 is reflective of a Treasury estimate of 0-10, 55 reflective of a Treasury estimate of 10-100.
** Values taken from Australian Government Budget 2016-17, Budget Paper 1. and Australian Government 2017-18, Budget Paper 1.
*** Three latest figures taken from Budget 2015-16 Mid-Year Economic and Fiscal Outlook – Tax Expenditures
All other measures and their corresponding values are estimates taken from the Australian government Treasury’s Tax Expenditure Statement published 25 January 2018.
By far the largest contributor to the tax-based subsidies total is the Fuel Tax Credit Scheme, which provides around $6 billion worth of credits and grants to cover the tax paid on fuel to reduce its overall costs to heavy users.
It is estimated that some 20% of these fuel tax credits go directly to fossil fuel producers.
We have included the full amount as it all goes to supporting the consumption of fossil fuels.
Australia also pays out significant subsidies through statutory effective life caps, which allow for accelerated depreciation and a shorter write-off period for many vehicles.
These tax deductions cost almost $2 billion worth of tax-payers’ money each year.
There are also a range of tax incentives for fossil fuel exploration and production, as well as measures encouraging aviation, shipping and motor vehicle use.

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Here Are Three Ways That Cities Can Adapt To Changing Climates

The Conversation - 

Many residents in cities in the global South have very poor and limited access to water. Sean Wilson
Cape Town’s “Day Zero” experience – the prospect of dam levels dropping dangerously low, taps running dry and water rations being distributed from public collection points – speaks powerfully to the urgency and complexity of climate change adaptation.
The recent arrival of the South African city’s winter rains mean that dam levels have begun rising again and it’s dodged the introduction of wholesale water rationing. For now.
But the drought which pushed Cape Town to the edge isn’t over yet. The threat of water rationing could still become a reality in 2019. And there will be other droughts, too, in Cape Town and beyond. Other cities that have experienced severe water scarcity include Melbourne in Australia, Los Angeles in the US, São Paulo in Brazil, Bolivia’s capital city La Paz and Maputo in Mozambique, to name but a few.
Cities in the global South are especially hard hit by droughts. This is because the resources and capabilities to expand and upgrade water infrastructures serving these cities remain scarce. Many residents in these cities have very poor and limited access to water in “normal” times. Things become even more dire in water scarce situations.
My doctoral and post-doctoral research focused on climate adaptation decision making and governance in southern African cities. In other words, how are people organising to reduce the risks that higher temperatures, intense rainfall and dry periods pose to city residents?
I’ll be sharing my findings at the Adaptation Futures conference, which is being held in Cape Town from June 19 to 21. It will be the first time that the international gathering of climate adaptation experts and practitioners will take place on the African continent.
My research suggests three lessons for any city looking to prepare for and manage climate extremes. These centre on preparation, leadership and an understanding that adaptation requires both big and small changes.

Lessons
Lesson 1: Do your homework and open it up to others
For sensible and effective action to happen in a time of crisis when rapid change is demanded, several things are needed. These include sustained investment in experimentation, robust research and anticipatory planning. A crisis creates or unlocks opportunities for change. But the groundwork must be laid to avoid knee-jerk reactions and short-term solutions with unknown, potentially negative consequences that can undermine sustainability.
For example, in Cape Town there is rapid expansion of groundwater abstraction and a big push to commission desalination plants. Both need significant investment and new infrastructure that has long-term implications for the water network, the affordability of water and the local ecology.
Over the last decade, Cape Town has been involved in preparing a number of strategies and plans identifying measures to manage water and climate risks. These laid important groundwork for evaluating options, but more work is needed.
These research, planning and advisory processes are important prerequisites to navigating a robust adaptation pathway. Crises have to be seen, understood, managed and leveraged as part of a much longer-term climate adaptation effort.
Cape Town’s crisis has shown how important it is for such technical deliberations to be opened up to public and political engagement. If this doesn’t happen, all the planning in world won’t help – because people will ignore or resist the planners’ conclusions.

Lesson 2: Collaborative leadership is crucial
Leadership and open communication that fosters trust and collaboration are essential to navigate times of panic and transition. This pertains to leadership in all spheres including political, intellectual, civic, business and administration. Such leadership is needed at all levels.
When leadership is defensive and divisive, as was the case in the early stages of the Cape Town water crisis, it leads to much blame and finger pointing. This can cause uncertainty and fragmented and inconsistent responses – which is exactly what happened in Cape Town.
The city government gradually started improving communication lines through initiatives like the Water Dashboard and the Water Outlook. This helped greatly in building a more cohesive set of actions and more inclusive and considered deliberations over the way forward.

Lesson 3: Big and small changes matter
Adapting cities to climate change involves a combination of small and big changes that need action from all sides. These changes need to explicitly address inequality.
In the case of adapting Cape Town to periods of water scarcity in the future, potential actions range from households and businesses reusing greywater on-site (for example using shower water to flush toilets) to the large-scale harvesting of stormwater to recharge underground aquifers. Many of these changes are costly and run the risk of further entrenching inequality and exclusion. Wealthy homes and businesses can afford to buy water saving technologies and alternative sources of water, like private boreholes, while low-income households and small businesses face rising municipal water bills.

Climate adaptation
These lessons are not unique to Cape Town’s water crisis. As experiences across the world suggest, these may be lessons that have to be learnt the hard way. Cities may need to face their own version of a crisis to galvanise action towards making the changes needed. But doing the preparatory work is an essential part of adapting.
Moving beyond coping with a crisis in the short-term to building the capacity to avoid, or at least better manage, such situations over the long-term lies at the heart of climate adaptation.

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23/06/2018

The Refugees The World Barely Pays Attention To

NPR - Tim McDonnell

In Kiribati, an island republic in the Central Pacific, large parts of the village Eita (above) have succumbed to flooding from the sea. Jonas Gratzer/LightRocket via Getty Images
This month, diplomats from around the world met in New York and Geneva to hash out a pair of new global agreements that aim to lay out new guidelines for how countries should deal with an unprecedented surge in the number of displaced people, which has now reached 65.6 million worldwide.
But there's one emerging category that seems to be getting short shrift in the conversation: so-called "climate refugees," who currently lack any formal definition, recognition or protection under international law even as the scope of their predicament becomes more clear.
Since 2008, an average of 24 million people have been displaced by catastrophic weather disasters each year. As climate change worsens storms and droughts, climate scientists and migration experts expect that number to rise.
Meanwhile, climate impacts that unravel over time, like desert expansion and sea level rise, are also forcing people from their homes: A World Bank report in March projects that within three of the most vulnerable regions — sub-Saharan Africa, South Asia and Latin America — 143 million people could be displaced by these impacts by 2050.
In Bangladesh, hundreds of thousands of people are routinely uprooted by coastal flooding, many making a treacherous journey to the slums of the capital, Dhaka. In West Africa, the almost total disappearance of Lake Chad because of desertification has empowered terrorists and forced more than four million people into camps.
It's a problem in the United States as well. An estimated 2,300 Puerto Rican families displaced by Hurricane Maria are still looking for permanent housing, while government officials have spent years working to preemptively relocate more than a dozen small coastal communities in Alaska and Louisiana that are disappearing into the rising sea.
A December study by Columbia University climate researchers in the peer-reviewed journal Science projected that if global temperatures continue their upward march, applications for asylum to the European Union could increase 28 percent to nearly 450,000 per year by 2100.
But so far, there's no international agreement on who should qualify as a climate refugee — much less a plan to manage the growing crisis.
"These people fall through the cracks," says Erol Yayboke, a development expert at the Center for Strategic and International Studies who helped author a May report on forced migration. "It's hard for countries to come to a consensus on something like this."
That difficulty took shape during the second and third weeks of June in the latest round of negotiations on the Global Compact for Migration and the Global Compact on Refugees, which are due to be adopted at the U.N. General Assembly this fall.
When the compacts were first proposed in 2016, there was some hope among migration researchers and advocates that they could provide a platform for new international policies on climate refugees, which had gained prominence since the 2015 Paris climate talks. But that hope was quashed in March, when Louise Arbour, the U.N. official leading the migration compact — which, of the two agreements, was considered the more likely venue for strong climate language — told the European Union that the document would not grant "specific legal international protection to climate-induced migrants."
Both compacts do make some reference to the climate. The latest draft of the migration compact calls on U.N. members to "better map, understand, predict and address migration movements, including those resulting from sudden- and slow-onset natural disasters, environmental degradation, the adverse effects of climate change" and "cooperate to identify, develop and strengthen solutions, including planned relocation and visa options" for climate migrants.
The refugee compact stops much shorter, only mentioning climate as one of many factors that "may interact with the drivers of refugee movements."
Ideally, the compacts should encourage countries to create new legal processes to document and manage climate migrants "so people can move before the water is literally lapping at their feet," says Nina Hall, a migration expert at Johns Hopkins University. As an example, she cited a plan in New Zealand to offer up to 100 special climate visas to Pacific Islanders — although that process is still in development and isn't likely to open for several years, she said.
But the language in the compacts is too vague to spur much progress, she says, and in any case neither compact will be legally binding.
"We have to be up front that the global compacts are not going to transform the landscape for climate migrants," Hall says.
Climate refugees pose a number of unique challenges for international policymakers compared to those displaced by persecution, the traditional driver recognized by the 1951 UN Refugee Convention. While some people, like the Puerto Ricans displaced by Maria, are affected by a specific disaster, many others are forced to move because of slow-onset changes like sea level rise and desertification, which can make it hard to identify them as climate refugees. Researchers are still working to understand how climate change interacts with the panoply of other factors, including national security and local economic trends, that might prompt a family to move.
At the same time, the majority of today's climate refugees are displaced within the borders of their own country, whereas the new compacts focus exclusively on cross-border movement. And for Pacific island nations that face a truly existential threat from sea level rise, there's no legal precedent to guide how they might relocate to new territory in another country — if they even want to move. Even a comparatively simpler effort — to relocate a community of fewer than 100 people in Louisiana whose island home, Isle de Jean Charles, has lost 98 percent of its land to sea level rise since the 1950s, to a new town 40 miles inland — has taken several years and cost $50 million and still faces setbacks, including complaints from the predominantly Native American residents that the state government didn't adequately involve them in the planning process.
"The reality is there are tens of millions of these people, and we don't agree on what we can do about them," Yayboke says.
Meanwhile, the wave of nationalism and anti-immigrant sentiment that has swept across Europe and the U.S. in recent years has made it a challenge for the U.N. to even get governments to follow existing refugee protocol, let alone expand it to cover an entirely new class of refugee, Hall says.
"To get any progressive international policy, much less hard law, is almost impossible in today's climate," she says. "We're not going to get any kind of binding convention on displaced people due to climate change."
The U.S. pulled out of the migration compact in December, citing concerns that it could impede the Trump administration's immigration agenda. While that means the final agreement will be missing any commitment from the world's number-one migrant destination, it does remove a potential roadblock to including climate-specific language, given Trump's disbelief in climate change.
In any case, the global compacts aren't the end of the issue. A different U.N. task force that was established in the Paris climate agreement is set to deliver a new set of recommendations on climate refugees around the same time the compacts are adopted. They will likely focus on measures individual countries can take to prevent climate refugees from being displaced in the first place, says Mariam Traore Chazalnoel, a climate expert at the U.N.'s International Organization for Migration.
"Most people don't actually want to migrate," she says. "They would rather stay where they are. But they need the means to stay where they are."
That could include programs to train and equip farmers for drought tolerance, she says, raise homes out of flood plains, and other measures aimed at increasing communities' resilience to climate shocks. Yayboke believes that development agencies need to step up funding for climate adaptation programs, which can help prevent displacement and reduce government spending on recovery from predictable natural disasters later on.
"We are spending so much money on this stuff, but we're being totally reactive," he says. "There are proactive things we can do that we're just not doing."
Few places are more illustrative of that problem than Bangladesh. According to the CSIS report, up to 70 percent of the five million people living in Dhaka's slums were displaced from their original home by environmental disasters.
"The situation and scope of this problem is entirely new, and of biblical proportions," says Steve Trent, executive director of the Environmental Justice Foundation, which released its own report on Bangladesh in 2017. "It demands an entirely new legal convention. The global compacts are a start, but it's clear that they're not enough."

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Crikey! Crocs Heading South And Other Changes Forecast For Australia'S Wildlife

ABC Science - Nick Kilvert

A crocodile warning was issued for Coolum in 2017. (ABC Sunshine Coast: Megan Kinninment)
The chances of limiting climate change appear to be growing slimmer by the day — and this may have big implications for Australia's wildlife.
Recently a number of crocodiles have been trapped in the Mary River, just 105 kilometres north of Noosa and 250km south of their usual range.
Irukandji jellyfish too, appear to be expanding south, with 10 suspected stings near Fraser Island and a child stung at Mooloolaba last year.
Numerous tropical fish have been recorded up to 1,000 kilometres south of their traditional range, such as the Great Barrier Reef's lemon-peel angelfish which turned up on Lord Howe Island in 2009, and habitat-modifying sea urchins have landed in Tasmania.
According to Climate Action Tracker (CAT), the world is not reducing emissions sufficiently to limit warming to below 2 degrees.
So how will warming of 2 degrees affect the distribution of Australian animals?
Will we have crocodiles sunning themselves on the beaches at Noosa and Irukandji in Byron Bay? And what happens when rare species clinging to mountain tops run out of room to climb?

Crocodiles in Noosa?
Crocodiles like this one have been showing up regularly in the Mary River, 100 kms north of Noosa. (ABC Wide Bay: Brad Marsellos)
The average annual monthly maximum temperature difference between Gladstone and Noosa is 1.8 degrees Celsius, according to Bureau of Meteorology records.
Although a 2-degree average temperature increase does not mean all regions will warm uniformly, if we take it as a rough guide it does mean Noosa's climate would be inside the present range of crocodiles.
Crocodiles have been known to travel hundreds of kilometres in order to find new territory, according to Darwin zoologist Adam Britton.
"If two points are connected by water then they can get there. And the only thing that really stops them if there's water involved is temperature."
Although they are fairly generalist in nature, there are a few environmental factors that crocodiles prefer when seeking new habitat.
'That'll be good fun if that was the Gold Coast.' (ABC News: Xavier La Canna)
"They tend to prefer tidal river systems — everything from the mangrove habitats you find in the estuaries, up into the less-saline habitat you see further upstream."
Certainly estuarine habitats exist all the way down the Queensland coast and into New South Wales.
But there is uncertainty about whether the recent instances of crocodiles in southern waters is climate related or due to increasing numbers.
Crocodile populations have dramatically recovered from the brink of extinction since the 1970s, and the need for new territory may push some individuals to move outside their natural range.
A Queensland Department of Environment and Science (DES) spokesperson said they currently "don't have evidence" to suggest crocodiles are expanding south.
"To establish a better scientific understanding of Queensland's wild population of estuarine crocodiles, the Queensland Government commenced a three-year crocodile survey and monitoring program in April 2017," they said by email.
"We will be considering size, habitat, distribution and abundance of estuarine crocodiles in Queensland waterways."
But Professor Stephen Williams from James Cook University (JCU) agreed that as the climate warmed, southward migration was inevitable.
"They're a big reptile, they're reliant on warmer water and sunbaking to keep warm and their southern extent certainly will be affected by the temperature. I'm guessing that'll continue and move further south," he said.
"I was at the beach just up at the Daintree the other day and we saw a three-metre croc swim past just out past the surf line … it's like yeah that'll be good fun if that was at the Gold Coast."

Irukandji
A child was stung by an Irukandji jellyfish at Mooloolaba. (ABC News: Matt Bamford)
Although "Irukandji syndrome" was known from the 1940s in North Queensland, its cause was unknown until toxinologist Jack Barnes allowed himself, his nine-year-old son, and a volunteer lifesaver to be stung by a jellyfish the size of a fingernail.
All were hospitalised but recovered, and Barnes documented the sting symptoms of what came to be known as the Irukandji jellyfish.
Several species of Irukandji are common in Australia's tropical waters but numerous stings have recently occurred around Fraser Island, and one as far south as Mooloolaba on the Sunshine Coast last year.
Despite there being limited knowledge of Irukandji biology, toxinologist associate professor Jamie Seymour from JCU who has studied them extensively, said they were already responding to warming conditions.
"If you go back 50 years ago, you find that the [stinger] season was around two months long. Now the season is about six to seven months long," he said.
"We looked at how far south the stings were 50 years ago and they were around about the Whitsundays. And we looked at where we're getting stings now, which is the southern end of Fraser Island."
Jack Barnes stung himself and his nine-year-old son with an Irukandji. (Supplied: Lisa-Ann Gershwin)
Although some have argued Irukandji live in the reef and so are limited in how far south they can travel, Dr Seymour does not think that is the case.
Juveniles inhabit water that is less saline than open ocean, but that may be shallow inshore waters or even around estuarine systems.
"I think the major reason people think you [only] find them around reefs is because that's where people swim," he said.
"By and large, the East Australia Current is going to push them further south until it gets too cold and they can't survive, so their southern distribution is temperature limited — we're fairly certain about that."
CEO of the Queensland Tourism Industry Council Daniel Gschwind said the tourism industry was supportive of scientific research in this field and would adjust their advice to tourists accordingly.
"If something changes in our environment then we have to make sure people are aware of this," he said.
But he also cautioned it was important to keep things in perspective.
"Do you know what is the greatest risk to tourists that come to Australia? Car travel followed by beach safety," he said.
Dr Seymour also said the threat posed by Irukandji was sometimes overblown.
"The numbers are fuzzy but we reckon we get something like 400 or 500 stings per year in Queensland, and out of the entire history that we know of we've only had two deaths [worldwide]."

Nowhere to go but up
White lemuroid possums are one of many species that may run out of mountains to climb. (www.wettropics.gov.au)
While marine animals are able to migrate north and south in search of cooler waters, a lot of Australia's mountain-dwelling animals do not have the same option.
As temperatures rise, species like the white lemuroid ringtail possum in the wet tropics of North Queensland are being pushed to higher, colder altitudes.
The problem is, with Australia's relatively low mountain ranges, there is only so high they can go, according to Professor Stephen Williams.
"Fifteen years ago, I was happily going along studying ecology and rainforest biodiversity, and then I did some work on climate change as a side project and realised that almost everything I worked on could go extinct this century," he said.
"The mountains here aren't very big, they only go up to 1,500 metres. Most of them are actually only 1,000 to 1,200 metres, so they just slowly contract up the mountain until there's nowhere for them to go."
The wet tropics are home to numerous endemic species. (ABC News: Eric Tlozek)
 An increase of 2 degrees or more could send more than 50 per cent of mountain-dwelling species in the wet tropics extinct.
And there are signs animals are already on the move, according to Professor Williams.
"Things like ringtail possums, we used to see them at 600 metres, now we haven't seen them at 600 metres for seven or eight years, and we can only find them now above 700 metres," he said.
"And that pattern is relatively consistent across all of the species that we've got enough data to do anything with, statistically."
The 2-degree warming limit in the Paris Agreement that countries signed up to in 2015 wasn't plucked from thin air.
The IPCC report states many ecosystems are subject to, "very high risks with additional warming of 2 degrees Celsius, particularly Arctic sea-ice and coral-reef systems".
Beyond 2 degrees, there is likely to be "extensive" biodiversity loss, restricted crop yields, and significant sea-level rise.
For Australia's mountain-dwelling animals, Professor Williams said the 2-degree target was critical.
"Our models predict that we don't really get any extinction until about one-and-a-half degrees, and that makes sense because anything that is here now has already survived one-and-a-half degrees in the past," he said.
"The extinctions don't really start to kick in until about 2 degrees, and then they start to accelerate rapidly beyond 2 degrees."
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Drought Stricken Aussie Farmers On The Climate Change Frontline

Climate Council - 


ACCELERATING CLIMATE CHANGE is exacerbating drought conditions across parts of southern Australia, contributing to a wide range of physical and mental health issues, according to the Climate Council.
The ‘Climate Change and Drought Factsheet’ shows drought conditions have been officially declared in over 16% of New South Wales and nearly 58% of Queensland, with climate change contributing to extreme weather events including record temperatures and low rainfall, hitting the Australian agriculture sector hard.
“This report shows that Aussie farmers are on the frontline when it comes to facing the impacts of intensifying climate change,” said Climate Councillor and ecologist Professor Lesley Hughes.
“This is a critical issue for farmers, their families and rural communities. Droughts are linked to wide-ranging health impacts, from nutrition to infectious diseases, along with mental health concerns,” she said.
“We also know that worsening drought conditions have been linked to increased risk of suicidal behaviour, especially among male farmers.”
“The combined impact of rising temperatures and declining rainfall means that time spent in drought conditions across southern Australia, such as what we are seeing now, will almost certainly worsen over the next few decades. Unless we take far more serious steps to reduce greenhouse gas pollution, climate change impacts will continue to accelerate beyond that.”

Key findings include:
  • Queensland and New South Wales are currently in the grip of severe drought, with drought declared for 16.4 percent of New South Wales and 57.6 percent of Queensland.
  • Current drought conditions have followed a 2016/2017 summer characterised by record-breaking temperatures, and the preceding record dry winter. Rainfall over southern Australia during autumn 2018 was the second lowest on record.
  • Climate change has contributed to a southward shift in weather systems that typically bring cool season rainfall to southern Australia. Since the 1970s late autumn and early winter rainfall has decreased by 15 percent in southeast Australia, and Western Australia’s southwest region has experienced a 15 percent decline in cool season rainfall.
  • Future drying trends in Australia will be most pronounced over southwest Western Australia, with total reductions in autumn and winter precipitation potentially as high as 50 percent by the late 21st century.
Climate Council Acting CEO Dr Martin Rice said climate change is also driving an increase in the intensity and frequency of hot days and heatwaves in Australia, exacerbating drought conditions.
“By 2030, winter and spring rainfall in southern Australia is projected to further drop by around 15 per cent,” said Dr Rice.
Dr Rice said Australia’s lack of strong and credible federal climate and energy policy was leaving Australians and the agriculture sector vulnerable to increasing extreme weather events.
“The ongoing burning of fossil fuels, such as coal, oil and gas has led to rising greenhouse gas pollution levels in Australia,” he said.
“To protect battling farmers on the front line of climate change from intensifying drought conditions, we must continue to transition away from polluting fossil fuels, towards the increased rollout of clean, affordable and reliable renewable energy and storage technology.”

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22/06/2018

Climate Change May Soon Hit Billions Of People. Many Cities Are Already Taking Action.

Columbia University - Earth Institute

Billions of people in big cities around the world face increasing climate-related risks, from heat waves to energy shortages. Here, a street scene in Dhaka, the capital of Bangladesh. (Kevin Krajick/Earth Institute)
Billions of people in thousands of cities around the world will soon be at risk from climate-related heat waves, droughts, flooding, food shortages and energy blackouts by mid-century, but many cities are already taking action to blunt such effects, says a new report from a consortium of international organizations.
The report, called The Future We Don’t Want, estimates that by 2050:

  • 1.6 billion people living in more than 970 cities will be regularly exposed to extreme high temperatures.
  • Over 800 million living in 570 cities will be vulnerable to sea-level rise and coastal flooding.
  • 650 million, in over 500 cities, will be at risk of water shortages.
  • 2.5 billion people will be living in over 1,600 cities where national food supplies will be threatened.
  • The power supply to 470 million people, in over 230 cities, will be vulnerable to sea-level rise.
  • 215 million poor urban residents living in slum areas in over 490 cities will face disproportionate climate risks.

The report was assembled by C40 Cities, a group of big cities working to face climate change; the Global Covenant of Mayors for Climate & Energy, which has signatories in thousands of cities representing some 700 million people; the Urban Climate Change Research Network (UCCRN), a global consortium of institutions and experts based at Columbia University’s Earth Institute; and the UK-based consultant group Acclimatise. It was presented this week at the Adaptation Futures conference in Cape Town, South Africa, where representatives of cities around the world are sharing ideas on how to become more resilient to changing climate.
“For decades, scientists have been warning of the risks that climate change will pose. Now we have the clearest possible evidence of just what these impacts will mean for [the] world’s cities,” said Mark Watts, executive director of C40 Cities. “Our research should serve as a wake-up call.”
The report features steps that major urban areas already taking to adapt. Cynthia Rosenzweig, co-chair of the UCCRN and head of the climate impacts group at Columbia’s Center for Climate Systems Research, said that if such efforts are scaled up and widely adopted, they would stem some of the worst effects.
Some of the efforts covered by the report include:

  • To battle extreme heat, Seoul has planted 16 million trees and expanded its green space by 3 square kilometers. The city has also set up shaded cooling centers for those unable to access air conditioning.
  • New York City is improving coastal flood mapping, strengthening large-scale coastal defenses and building smaller, strategically placed local storm surge barriers around the city.
  • São Paulo has set up reward schemes to encourage citizens to use less water, while investing in the city’s pipeline system to reduce water leakage.
  • Paris plans to establish more than 80 acres of urban agriculture within the city’s boundaries by 2020. By 2050, 25 percent of the city’s food supply will be produced in the metropolitan region.
  • London is improving drainage to ensure that key infrastructure can withstand heavy flooding, The city is also encouraging decentralized energy supplies to reduce the risk of widespread blackouts if any one power source is damaged.
  • Lima has created a poverty map of the city to help policy makers focus resources on the most vulnerable and under-served areas, where people are most exposed to extreme heat.

Many of the solutions being tried out by cities, as well as regional governments, investors and businesses, will be showcased at the Global Climate Action Summit,  in San Francisco, Sept. 12-14.

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