Feed aggregator

Berries festoon the quarry reserve

The Guardian - Fri, 2016-11-25 15:30

Ketton Quarry, Rutland Withered stems of white bryony lash together clumps of little red globes hanging in garlands, and hedges blush with hawthorn berries

The incoming polar air mass and clear night sky produces this year’s heaviest frost. Water crystallises into bristly masses on every surface. The blazing morning sun rapidly scorches most of it away, but in the deepest still hollows of Ketton quarry the thick, white, dusting endures into the afternoon.

Related: Birds and berries: A fertile feast

Continue reading...
Categories: Around The Web

Arctic ice melt could trigger uncontrollable climate change at global level

The Guardian - Fri, 2016-11-25 15:01

Scientists warn increasingly rapid melting could trigger polar ‘tipping points’ with catastrophic consequences felt as far away as the Indian Ocean

Arctic scientists have warned that the increasingly rapid melting of the ice cap risks triggering 19 “tipping points” in the region that could have catastrophic consequences around the globe.

The Arctic Resilience Report found that the effects of Arctic warming could be felt as far away as the Indian Ocean, in a stark warning that changes in the region could cause uncontrollable climate change at a global level.

Continue reading...
Categories: Around The Web

Coal? What coal? Reef doing great, say ministers

RenewEconomy - Fri, 2016-11-25 13:52
Federal and Queensland environment ministers say "significant progress" being made on protecting, improving health of Great Barrier Reef.
Categories: Around The Web

Minister defends coal industry after call to ban new mines to save reef

The Guardian - Fri, 2016-11-25 13:34

Josh Frydenberg says coal ‘vitally important’ after former Great Barrier Reef official calls said its future depended on an end to mining

Josh Frydenberg has defended Australia’s coal industry as “vitally important” days after a former Great Barrier Reef authority chief called for a ban on new mines.

Speaking after a forum on the reef with state and territory ministers in Sydney on Friday, the federal environment minister said other countries would simply “fill the void” if Australia did not export coal.

Continue reading...
Categories: Around The Web

AGL offering free solar system, or battery storage, to wind farm neighbours

RenewEconomy - Fri, 2016-11-25 13:24
AGL offers free 5kW solar system, or battery storage to neighbours of what could be biggest wind farm in Queensland.
Categories: Around The Web

Heads up Barnaby: 300MW solar farm headed your way

RenewEconomy - Fri, 2016-11-25 13:20
A 300MW solar farm – which would be Australia's biggest – planned near NSW town of Armidale, the heart of Barnaby Joyce country.
Categories: Around The Web

Blockchain network disruption coming, and Australia among pioneers

RenewEconomy - Fri, 2016-11-25 13:05
Australian start-up Power Ledger named as global leader in blockchain technology which has the potential to “rapidly disrupt” the traditional energy market and fast-track the shift to decentralised generation.
Categories: Around The Web

Interest cools at fourth ERF auction as emissions growth continues

RenewEconomy - Fri, 2016-11-25 12:22
Low participation has led to a smaller amount of abatement contracted by the Clean Energy Regulator at the fourth ERF auction.
Categories: Around The Web

Business as usual at Australia’s coal, oil and gas companies

RenewEconomy - Fri, 2016-11-25 12:22
The deepest denial about climate change rests within Australia’s coal, oil and gas companies; which is ironic given that is where some of the impacts will be most keenly felt.
Categories: Around The Web

Toyota imports Mirai and refueller to sell hydrogen story to Australia

RenewEconomy - Fri, 2016-11-25 12:18
Toyota has imported three Mirai hydrogen fuel-cell sedans to demonstrate the technology to Australian officialdom and motorists over the next few years.
Categories: Around The Web

Please, Donald Trump, don't send climate science back to the pre-satellite era

The Conversation - Fri, 2016-11-25 12:16
You can only truly understand the weather by flying above the clouds. NASA

Bob Walker, an adviser to US President-elect Donald Trump, has set alarm bells ringing by recommending that NASA’s climate monitoring programs be axed.

But his dismissal of the “politicised science” at NASA’s Earth Science Division shows an ignorance of the breadth, role and significance of its contributions to society in the United States and worldwide.

It’s unclear what exactly Walker means by his comment that “future programs should definitely be placed with other agencies”. Is the plan merely to shuffle the deckchairs – same science, different badge — or is it code for cutting the research observation and monitoring efforts altogether?

If the former, it is hard to see what it would achieve, beyond risking a loss of expertise as other agencies attempt to develop the same capabilities as NASA. But the latter is a frightening prospect, because it would effectively take us back to what climate scientists refer to as the “pre-satellite era”.

The global climate system is, well, global. There are places where there is no one around to take measurements, such as the vast expanses of our oceans, the central desert of Australia, and the Arctic and Antarctic regions. But what happens in these remote areas affects the climate elsewhere; the atmosphere has no boundary and the oceans are linked.

Before satellites, the patchiness of weather and climate observations for much of the globe made it hard to detect the patterns that govern rainfall, temperatures and winds.

Now we have a continuous global view of Earth, courtesy of NASA’s Earth observation satellite program. Cutting this research and returning to the pre-satellite era would leave us ignorant not only of Earth’s climate processes, but also of whether or not our environmental policies are effective.

The value of satellites

For more than three decades in the early 20th century, the British meteorologist Sir Gilbert T. Walker searched the sparse climate records for patterns that could explain why the Indian monsoon failed in some years. After some laborious number-crunching, he put forward the concept of the “Southern Oscillation”, describing sea-level pressure differences between Darwin and Tahiti in the South Pacific. His Southern Oscillation Index is still used today.

When sea-level pressure is lower in Tahiti than Darwin, it causes wind patterns that bring drought to India and northeast Australia, Walker suggested. But the Southern Oscillation was only part of the story.

Almost half a century later, in the late 1960s, early NASA satellite data provided an unprecedented look at the patterns of clouds above the Pacific Ocean. This helped the meteorologist Jacob Bjerknes to link Walker’s sea-level pressure oscillations with other variables such as wind, rainfall (clouds) and ocean temperature variations right across the tropical Pacific.

Crucially, he identified a low-rainfall zone in the central-eastern equatorial Pacific – of which Walker, with his patchy data, had been completely unaware. The “chain reaction” between the atmosphere and ocean now known as the El Niño-Southern Oscillation emerged in part from NASA satellite imagery.

A visualisation of the strong El Niño that developed in 1997, using NASA sea-surface height data from the TOPEX/Poseidon satellite. NASA

Of course, the holy grail when it comes to El Niño is to forecast events ahead of time, because El Niño is a major factor in bringing droughts and floods to countries bordering the Pacific Oceans. This has huge consequences for millions of livelihoods. Australia’s Bureau of Meteorology uses NASA satellite and model data to forecast an impending El Niño three to six months ahead of time, while real-time observations help to assess the impacts once the event actually arrives.

This level of forecasting and monitoring was a pipe dream in the pre-satellite era. The same could be said about a host of other global phenomena – from severe storms, to massive wildfires, to air pollution.

Verifying policy decisions

If President-elect Trump really needs yet more certainty that human-induced global warming is not a hoax and that the recently enacted Paris Agreement will have a meaningful impact, then one of the best ways to achieve this would be to boost NASA’s Earth Science Division.

NASA satellites recently demonstrated the success of US and European environmental regulations in improving air quality over the past decade. NASA has also been central to monitoring the effectiveness of the Montreal Protocol, the global agreement to safeguard the ozone layer. By keeping a close watch on the size and extent of the ozone hole, NASA has helped to show that it is beginning to recover and that the policy is working.

Our advice to Trump

Gilbert T. Walker wrote in 1940:

I think that the relationships of world weather are so complex that our only chance of explaining them is to accumulate the facts empirically.

His present-day namesake and Trump adviser Bob Walker also says “we need good science to tell us what the reality is”. One of President-elect Trump’s best chances of achieving this aim is to continue funding scientists to observe Earth from space.

So our advice to Trump is to look beyond the cheap talk about politicisation and appreciate the importance of the work done by NASA’s Earth Science Division. This is not, as Bob Walker asserts, “politically correct environmental monitoring” (whatever that is), but essential data that are already being used to ensure society’s health and wellbeing.

As for climate change science, the division’s reports on global temperatures are solely based on robust data. What’s being politicised here is not the science but the story that the science tells: that the planet is warming. Let’s not shoot the messenger.

The Conversation

Helen McGregor receives funding from the Australian Research Council and the University of Wollongong. McGregor is a member of the Australian Meteorological and Oceanographic Society, the American Geophysical Union and the Australasian Quaternary Association.

Jenny Fisher receives funding from the Australian Research Council, the Department of the Environment, NASA, and the University of Wollongong. Fisher is a member of the Australian Meteorological and Oceanographic Society and the American Geophysical Union.

Categories: Around The Web

JinkoSolar Supplies 140 MW to North Star Solar Project in Minnesota

RenewEconomy - Fri, 2016-11-25 12:11
JinkoSolar has completed delivery on 140 MWdc of PV modules for the North Star project located in Chisago County, Minnesota
Categories: Around The Web

Review of the first five years of Australia’s Biodiversity Conservation Strategy

Department of the Environment - Fri, 2016-11-25 12:00
On 25 November 2016, environment Ministers endorsed the report on the review and agreed to revise the Strategy based on the review’s findings.
Categories: Around The Web

Women in science pledge to combat hate

BBC - Fri, 2016-11-25 11:33
Women of science around the world sign a pledge to combat discrimination in the wake of the US election.
Categories: Around The Web

Seasonal wetlands face uncertain future

BBC - Fri, 2016-11-25 11:31
Ephemeral wetlands are poorly understood habitats and are being lost to future generations as a result of poor land-use practices, warn scientists.
Categories: Around The Web

Trump fools the New York Times on climate change

RenewEconomy - Fri, 2016-11-25 11:22
Memo to media: Ignore what Trump says, focus on what he does and who he appoints.
Categories: Around The Web

Victoria Coalition votes for solar energy to be paid less than coal

RenewEconomy - Fri, 2016-11-25 11:20
Victoria Coalition vote against rise in solar feed in tariff suggests it wants solar to be paid less than brown coal fired generation.
Categories: Around The Web

2050 climate targets: nations play long game in fighting global warming

RenewEconomy - Fri, 2016-11-25 11:11
There were signs at COP22 that several countries have begun the long-term planning needed to avoid dangerous climate change.
Categories: Around The Web

Great Barrier Reef Gully and Streambank Joint Program

Department of the Environment - Fri, 2016-11-25 10:44
The Australian and Queensland governments are investing more than $45 million over six years to tackle sediment run-off.
Categories: Around The Web

Machine food

BBC - Fri, 2016-11-25 10:36
The world needs to produce more food to feed a growing population, but is automation and sensor technology the answer?
Categories: Around The Web

Pages

Subscribe to Sustainable Engineering Society aggregator