22 February 2016, Renew Economy, Failure to include health risks grossly distorts true costs of climate change. Climate change is above all a question of public health. Although spared from famine and civil disruption that will afflict other countries, Australians increasingly will be exposed to the effects of extreme weather patterns consequent to our heating climate, and they will as a result suffer more ill health requiring attention from GPs and hospitals. Heat waves lead to heat stroke, increase heart attacks, cause dehydration and threaten those with renal impairment; fires threaten life in so many ways; floods and wild storms can cause drownings and other injuries; and all these events lead to distress and affect long-term mental well-being. Children especially, but also adults, can suffer from sleep disturbances, aggressive behaviour, sadness, substance abuse and post-traumatic stress disorder. Children are also vulnerable to extreme weather events because such events interrupt their safety, their sense of security and their access to the outside world. Hotter days will bring more asthma, and, in some localities, more exposure to local mosquito-born infectious diseases. This cannot be what we want for our children. Disturbingly, our health system infrastructure and resources can also be affected by more severe and frequent extreme weather events, thus potentially limiting their ability to provide care when it is needed most. For example, in the heat wave before the Black Saturday bushfires, 25 per cent of all hospitals had problems with their air-conditioning or cooling systems. Political leaders, by ignoring the impacts of global warming on health, have hindered public discourse and concerted action on climate change despite the urgency to act. The failure to include health costs distorts the costs to families and communities, as well as the bottom line on already-stretched health budgets. What is already well known by economists, for example, is that the health costs of coal and fossil fuel burning increase societal costs of electricity (double or more by some estimates) – surely an incentive to escape from the fossil fuel addiction. The Morwell coalmine fire in Victoria would be another route by which society is damaged by use of fossil fuels. As a medical organisation, Doctors for the Environment Australia is frustrated by the dismal failure of governments and our senior leaders to include the health risks and costs in the numerous discussions on climate change. Read More here
Category Archives: Impacts Observed & Projected
21 February 2016, Climate News Network, Fall in rain hits Southeast Asia food yields. Changing climate and weather are creating severe problems for some of the world’s largest producers of rice and other major agricultural crops.The boat moves sluggishly up the Ayeyarwaddy, the river formerly known as the Irrawaddy. Every so often it comes to a halt as the ferryman dips a bamboo pole in the shallow waters, checking for sandbanks. Even though it is the dry season, water levels in the Ayeyarwaddy – Myanmar’s main river, and one of Southeast Asia’s principal waterways – are unusually low. The ferry is carrying passengers and goods from the ancient temple site of Baganto the city of Mandalay. “The journey is taking longer and longer as the water level keeps dropping,” says the skipper of the creaking, wooden-hulled boat. “It has been so dry. For the last two years, the monsoon in this area has arrived late and the rains were not enough. Then, when it did rain, it was intense, and more and more sand and earth was washed downriver because the trees are being cut down further north. It makes the journey very difficult.” Damaged crops A similar story is being heard across much of the region – from the Brahmaputrain Assam in India, west of Myanmar, to the Mekong in Vietnam in the east. Unusual weather patterns and a lack of rain in many areas in recent years have caused drought and severely damaged crops in what are some of the world’s most fertile areas. When the rains do arrive the dry, caked earth often cannot absorb the water. Read More here
20 February 2016, Climate News Network, Carbon rise keeps water in drylands. Increased carbon dioxide in the atmosphere because of climate change is helping to turn the world’s drylands a more luxuriant green − but that’s not necessarily good news. The drylands of the world are getting greener, and researchers think it is thanks to higher levels of carbon dioxide in the atmosphere. In a paradoxical discovery, even as landscapes become increasingly at risk of desertification, they may also look more luxuriant. Two scientists from Purdue University in Indiana, US, and a researcher in Saudi Arabia report in the journal Scientific Reports that they analysed 45 satellite studies from eight countries to confirm that the drylands of the world are responding to global warming and climate change by getting greener.Their conclusion is that rising levels of the greenhouse gas that is warming the planet – a consequence of humans’ combustion of fossil fuels over the last two centuries – are also delivering extra fertilisation to plants, so that photosynthesis can function with less water. In turn, this means that more soil water stays in the ground. Negative feedback “We know from satellite observations that vegetation is greener than it was in the past,” says Lixin Wang, an Earth scientist from Purdue, and one of the authors of the report. “We now understand why that is occurring, but we don’t necessarily know if it is a good thing or not.” The observation seems to suggest that nature is delivering what engineers call negative feedback: as the Earth warms because of the rising greenhouse gas levels, so vegetation is responding to grow more vigorously and soak up more carbon. This has been observed before, but it may not be a good thing because one consequence of climate change is that drylands everywhere – and they are home to around two billion people – are likely to become increasingly parched, with cruel consequences for the world’s poorest people who make up most of those two billion. Nor is it certain that all drylands will respond with more vigorous growth. For some terrains, ecological devastation could increase. Read More here
17 February 2016, The Guardian, The key to halting climate change: admit we can’t save everything. Climate change, and human resistance to making the changes needed to halt it, both continue apace: 2015 was the hottest year in recorded history, we may be on the brink of a major species extinction event in the ocean, and yet political will is woefully lacking to tackle this solvable problem. Given these dire ecological trends, limited public funding and legislative gridlock, the time is ripe for a budget-neutral, executive-branch approach for managing our natural resources: triage. A science-based triage approach should be used to classify areas and species into one of three categories: not at immediate risk, in need of immediate attention or beyond help. Refusing to apply triage implicitly assumes that we can save everything and prevent change, which we cannot. Prioritization will occur regardless, just ad hoc and shrouded. This triage system would replace the status quo of inadequately managing our full portfolio of over 1m square miles of public land and 1,589 threatened and endangered species. For areas or species not at immediate risk, we can delay action while monitoring to detect changes in that status. For example, increased temperatures and prolonged periods of drought may increase both wildfires and populations of tree-killing beetles in forests of the Pacific north-west. Knowing this, we can track these variables and explore management options that minimize risk without prematurely devoting disproportionate resources. For areas needing immediate help, we must act now. For the coral reefs of the Florida Keys and US Virgin Islands, all anthropogenic impacts (such as overfishing, pollution and coastal development) must be dramatically reduced. Otherwise, because the health of these coral reefs is currently so compromised, they are unlikely to survive the sea level rise, rising ocean temperatures and increasing acidification resulting from climate change. For species protections, it would be wise to focus on keystone species such as oysters (water filterers), parrotfish (algae eaters on overgrown coral reefs), bees (pollinators) and wolves (key predators). For areas we can no longer maintain, we must make the most difficult of choices – give up, and accept that change is not always preventable. In Alaska, it may be too late to prevent the climate change-induced shift from coniferous-dominated to deciduous-dominated stands, with unfortunate impacts on forest-dwelling species and the logging industry. In the ocean, entire fisheries can be lost from an area when species shift due to warming waters. Read More here