Category Archives: Impacts Observed & Projected

PLEA Network

2 June 2016, YALE Climate Connections, U.N., UCS Point to Risks to World Heritage Sites. Australia concerns lead to holding-back case study on Great Barrier Reef, so Union of Concerned Scientists posts it independently. Climate impacts seen posing risks to sites . . . and to tourism. Sometimes, too often in fact, it’s not what’s included in the text of a report that captures the attention. It’s what’s omitted from that report, often not mistakenly. That’s a lesson learned and re-learned in the public policy field, but apparently not really absorbed in many cases. Those who internalized the lessons from the early-70s Watergate scandal that led to President Nixon’s resignation know well that it’s the cover-up, more so than the initial offense, that is the real crime. Only slightly more recently, the original “Jaws” in 1975 taught a similar lesson, as the fictional Amity Island town council sought to silence the truth in an effort to protect its tourism financial interests. World Heritage report cover

News Analysis and Commentary Advance now to a new report, “World Heritage and Tourism in a Changing Climate,” released May 26 by two United Nations agencies and the Union of Concerned Scientists, UCS. In a somewhat dual-personality report that at times seems as concerned tourism as with impacts of climate change, the report paints a dire image of 31 natural and cultural World Heritage sites in 29 countries around the world. Around the world, that is, save for Australia and its, ahem, rather important Great Barrier Reef (GBR), by any practical measure a worthy entry among top-ranking heritage and tourism sites. And clearly one with observed and serious impacts from rising ocean temperatures, increased acidification, and continuing carbon dioxide emissions. It ends up that the Australian government prevailed on the U.N. and its United Nations Educational, Scientific and Cultural Organization and United Nations Environment Program to omit any reference to GBR. Those Sydney folks must never have seen “Jaws.” Read More here  Also access missing chapter here

PLEA Network

27 May 2016, The Conversation, Antarctica may not be as isolated as we thought, and that’s a worry. For a long time, we have thought of Antarctica as isolated from the rest of the world. The continent is entirely surrounded by the Southern Ocean, which heaves with giant waves whipped up by intense winds, and is home to the world’s strongest ocean current, the eastward-flowing Antarctic circumpolar current (ACC). The Southern Ocean is associated with several circumpolar oceanic fronts (see image below), where sharp transitions in ocean temperature and salinity occur. One of the most significant of these is the Antarctic polar front, a convergence zone where cold Antarctic water sinks under warmer sub-Antarctic water. Ocean barrier The polar front was considered as a barrier blocking movement of marine plants and animals into and out of Antarctica. Many groups of organisms show strong differences on either side of the front, suggesting northern and southern populations have been separated for a long time. We know from genetic work that some species, such as some molluscs and crustaceans, have managed to cross the front in the past, but there is little evidence that biological movement across the front can or does still occur. Read More here

PLEA Network

27 May 2016, The Conversation, We’re kidding ourselves if we think we can ‘reset’ Earth’s damaged ecosystems. Earth is in a land degradation crisis. If we were to take the roughly one-third of the world’s land that has been degraded from its natural state and combine it into a single entity, these “Federated States of Degradia” would have a landmass bigger than Russia and a population of more than 3 billion, largely consisting of the world’s poorest and most marginalised people. The extent and impact of land degradation have prompted many nations to propose ambitious targets for fixing the situation – restoring the wildlife and ecosystems harmed by processes such as desertification, salinisation and erosion, but also the unavoidable loss of habitat due to urbanisation and agricultural expansion. In 2011, the Global Partnership on Forest and Landscape Restoration, a worldwide network of governments and action groups, proposed the Bonn Challenge, which aimed to restore 150 million hectares of degraded land by 2020. This target was extended to 350 million ha by 2030 at the September 2014 UN climate summit in New York. And at last year’s landmark Paris climate talks, African nations committed to a further 100 million ha of restoration by 2030. These ambitious goals are essential to focus global effort on such significant challenges. But are they focused on the right outcomes? For restoration projects, measuring success is crucial. Many projects use measures that are too simplistic, such as the number of trees planted or the number of plant stems per hectare. This may not reflect the actual successful functioning of the ecosystem. Meanwhile, at the other end of the scale are projects that shoot for outcomes such as “improve ecosystem integrity” – meaningless motherhood statements for which success is too complex to quantify. One response to this problem has been a widespread recommendation that restoration projects should aim to restore ecosystems back to the state they were in before degradation began. But we suggest that this baseline is a nostalgic aspiration, akin to restoring the “Garden of Eden”. Read More here

PLEA Network

23 May 2016, New Statesman, What will it take for people to care about climate change? Record-breaking heat wave in Rajasthan reveals how badly we lack the necessary infrastructure to cope with the human suffering climate change is already causing. The question of whether or not climate change is real is rapidly becoming less urgent than what can be done to alleviate the human suffering it is causing. In Rajasthan, north-west India this week, the mercury hit 51 degrees celsius (123°F). That’s the hottest temperature on record in the country. Hospitals are swamped with patients suffering heatstroke and dehydration. The year’s harvest is shrivelling in the ground. People are cooking to death on public transport. Yesterday, a camel left alone in the sun went mad and chewed its owner’s head off. That’s how hot it is in Rajasthan right now…..The British national sport of complaining about the weather is becoming increasingly insensitive. After three centuries of merrily conquering other nations and building bonfires out of their resources to light our way to a place of power in a burning world, we are still inhabiting one of the only landmasses where the weather isn’t actively trying to kill us all the time. Pleasant as it is to carp and moan every time the temperature moves outside the ten-degree range I happen to find comfortable, the temperate, drizzle-through-the-sunshine British climate is pretty much as good as it gets, on a global scale. In fact, on that same global scale, Britain has some claim for having had the most benefit out of fossil fuels for the least climate cost. If we’re not going to cough up reparations, the least we can do is stop whining.I mention all this for two reasons. Firstly, because the manifestations and implications of climate change are frightening wherever you happen to live, and I find sprinkle of weak humour makes the whole thing bearable, makes me less likely to panic and tap out of the entire discussion as something that’s not relevant to me right now because for the meantime, at least, I’m comfy indoors and it’s raining outside. Secondly, because when the lives and livelihoods of so many are at stake – when the topic for discussion is not tens or thousands but millions of people actually cooking in the unnatural heat – you run into a phenomenon that rationalists call “scope insensitivity”. Let’s say that my nightmare is overwhelming, inescapable heat. I can imagine, viscerally, physically, how it might feel to be trapped in a 51 degree… Read More here