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  • Global Warming Could Change Strength of El Niño

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    Global Warming Could Change Strength of El Niño

    Sep. 11, 2013 — Global warming could impact the El Niño Southern Oscillation (ENSO), altering the cycles of El Niño and La Niña events that bring extreme drought and flooding to Australia and many other Pacific-rim countries.


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    New research published in Nature Geoscience using coral samples from Kiribati has revealed how the ENSO cycle has changed over the past 4300 years. This research suggests that external changes have an impact on the strength and timing of El Niño events.

    “Our research has showed that while the development of La Niña and El Niño events is chaotic and hard to predict, the strength of these events can change over long time spans due to changes in the global climate,” said one of the paper’s authors Dr Steven Phipps.

    “For instance, we found that the ENSO cycle was much weaker 4300 years ago than it is today. This weaker cycle persisted for almost two centuries.”

    The researchers determined that natural influences on Earth’s climate, such as those caused by variations in its orbit around the sun, could affect the strength of El Niño events.

    Although small, these natural influences altered seasonal trade winds across the Eastern Pacific and affected the development of El Niño events. Interestingly, the research also showed that El Niño events in the past started later in the year and were often less intense.

    “We found there was a small strengthening of the regular seasonal trade winds in the Eastern Pacific in response to natural warming cycles in the Earth’s orbit around the sun. Remarkably this acted in a big way to stop El Niño events from forming and growing,” said lead author Dr Helen McGregor from the University of Wollongong.

    “This shows us that external factors can influence the ENSO process and that it may have a sustained response to future greenhouse gas changes. Currently 20th Century observations are too short to confirm whether this is occurring now.”

    Importantly, these new observations can now be used in climate models to see if these past changes in ENSO processes can be reproduced.

    “Currently, climate models do not agree on how El Niño may change under future global warming scenarios,” said Dr Phipps

    “With these new observations we can determine which models reproduce the most accurate response to changes in the global climate. This will help us to more accurately forecast the response of ENSO under future global warming scenarios.”

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    The above story is based on materials provided by University of New South Wales.

    Note: Materials may be edited for content and length. For further information, please contact the source cited above.


    Journal Reference:

    1. H. V. McGregor, M. J. Fischer, M. K. Gagan, D. Fink, S. J. Phipps, H. Wong, C. D. Woodroffe. A weak El Niño/Southern Oscillation with delayed seasonal growth around 4,300 years ago. Nature Geoscience, 2013; DOI: 10.1038/ngeo1936

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    University of New South Wales (2013, September 11). Global warming could change strength of El Niño. ScienceDaily. Retrieved September 12, 2013, from http://www.sciencedaily.com­ /releases/2013/09/130911093153.htm#.UjGFW_SQDJY.twitter

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  • Summer,2013,weather extremes tied to extraordinarily unusual polar jet stream

    Summer 2013 weather extremes tied to extraordinarily unusual polar jet stream

    By Steve Tracton, Published: September 11 at 3:35 pmE-mail the writer

    For at least the past one or two decades the adjective extreme has increasingly become used in describing unusual weather. It’s virtually impossible now to escape news of extreme drought, excessive rainfall and floods, record breaking heat waves, cool spells and severe weather outbreaks, etc. which seem to recur year after year around the Northern Hemisphere. This summer was no different except that the behavior and configuration of the polar jet stream, the river of high altitude winds marking the divide between warm and cool air, were rare and mind-boggling.

    Instead of meandering as a single stream like it normally does, it transformed into a “dual” jet stream configuration, sometimes transitioning from this dual setup back into a single more coherent stream, back and forth.

    The rarity of dual polar jets was highlighted by Professor John Nielsen-Gammon (Texas A&M University) in an article in Popular Mechanics. He pointed out they are something one might see once per decade. From an independent assessment myself, it appears that there are no other polar jet examples comparable to this summer at least as far back as 2000 (the furthest back I’ve looked).

    Mostly, the perplexing behavior of the polar jet has been described in befuddling terminology such as weird, mangled, and wobbly. Some have described the jet in a state of disarray, not playing by the so-called rules. Jeff Masters said that in his 30 years doing meteorology, the jet stream has been doing things he’s not seen before.

    What follows is a rather technical discussion of how this jet stream pattern evolved and some of the weather characteristics associated with it. Although some terms may not be familiar, the included parenthetical notes and illustrations should help guide you along.

    As a general overview I’ve subjectively identified three periods I call Regime 1, 2, and 3. To illustrate associated weather characteristics, I present 500mb zonal wind (representative of upper level jet stream) anomalies and 850mb temperature (low-level temperature) regimes over the June-July-August (JJA) meteorological summer. In these time vs. latitude (30-90N) charts, color coded values are daily means longitudinally averaged (0-360 degrees) at each latitude. Jet streams coincide with the green to red colorization. The three regimes are separated by notably shorter periods of transition from one regime to the next.

    Regime 1 (R1) appeared following a regime change at the end of May (not shown) to a dual polar jet which persisted through most of June. Around the beginning of July, R1 transitioned to a single jet mode which characterized Regime 2 (R2). During the third week in July, there was a rapid change to another dual jet configuration in Regime 3 (R3), which subsequently transitioned to a single jet during the middle of August.

    Screen Shot 2013-09-11 at 3.06.14 PM

    Time evolution of daily means vs. latitude of longitudinally averaged (0-360 longitude)  500mb zonal wind anomalies (left) and 850mb temperature (right). Green to red correspond to jets; light yellow to red identify correspond to anomalous warmth.

    It’s important to add that changes in the zonal wind at any given latitude conform directly (via basic meteorological principles, “thermal wind”) to the largest north-south and south-north differences (gradient) in the lower level temperature field (winds adjust to temperature changes, not vica versa, except in the Tropics).

    Most significantly, each regime reflects notably different background fields in the three dimensional wind and temperature structure of the atmosphere from the mid-latitudes to the North Pole (NP). Although there is considerable variability within a given regime, each appears to have predominant signatures in observed weather events that differ from those characterizing the other regimes. Some examples appear deeper down.

    To further describe aspects of regime transition, I’ll focus on that from R2 to R3. See first the time/lat chart for the period July 1 to Aug 9.

    Screen Shot 2013-09-11 at 3.06.28 PM

    The major difference between R2 and R3 zonal wind anomalies is obvious. Specifically, R2 is characterized by a single maximum in zonal wind speed (single polar jet) centered between 55-65N. Following a relatively short period of transition, two maxima (dual jets) are evident (in R3), the strongest immediately surrounding the NP (80-90N) while the second is seen initially far to the south but migrating slowly towards mid-latitudes.

    The zonal wind profiles are directly tied to evolution of the lower level temperature field. R2 is characterized by very warm weather immediately surrounding the NP (80-90N), cool in the 60-75N latitudinal band, and warm centered between 45-55N.

    After the relatively short transition period, R3 is virtually a mirror image with very cold around NP, warmth between 65-75N, and cool further south. Close inspection, if you are so inclined (presuming you have very good eyesight), will reveal that zonal wind speed maxima occur precisely where temperature decreases most rapidly from S-N, while minima are found where temperature increases most rapidly from N-S.

    So what does all this have to do with extreme weather events?

    Almost invariably extreme summer weather of late is discussed in context of anomalies (differences from average) in the polar jet. The anomalies are commonly attributed directly or indirectly to global warming (aka climate change) as manifest in warming occurring faster in the Arctic than latitudes further south (Arctic amplification). Temperatures, therefore, decrease less rapidly than the climatological norm, and the zonal component of the winds at jet levels adjust by weakening relative to “normal”. The response generally speaking is for atmospheric waves to amplify in their meridional (N-S) extent and lead to more frequent occurrences of unusually high amplitude ridges (and/or blocking highs) and troughs (and/or cut-off lows) along with the respective weather associated with these systems. In combination with slowing progression of weather systems, this translates to enhancing prospects for persistent spells of extreme heat, and extended periods of unusually cool and/or wet conditions.

    As illustrated in the figures above, the N-S differential heating adjustments in the zonal wind component are considerably more complex with regard to details in the spatial and temporal variability within as well as between regimes. In particular, note variability in details over time and latitude in the blue areas where zonal winds are least strong and thus favorable for high amplitude circulations and possible extreme weather.

    Nevertheless, as mentioned earlier, it is possible to discern the principle unique expression of each regime. By way of example, this figure displays those for R2 and R3.

    Screen Shot 2013-09-11 at 3.06.44 PM

    The distinct differences between the two regimes are abundantly clear (the 500mb height anomalies are closely related to the low level temperatures.) Note especially the dramatic transition from relatively cool conditions to extreme warmth over Alaska (influence of high amplitude ridge), the cooling trough in R3 over the Northeast U.S., and dominantly warm (R2) to dominantly cool (R3) over extreme northern Europe.

    The figures below exemplify regional differences corresponding to heavy rainfall events (precipitable water – total atmospheric water content above location – is used as an approximation for relative differences in precipitation).

    Screen Shot 2013-09-11 at 3.06.59 PM

    The transition form R2 to R3 brings in flooding rains to Western Europe.

    Especially interesting for the U.S.  are alternating regions of dominantly dry and dominantly wet conditions in the sequence of regimes transitions over the course of the entire summer, shown below.

    Screen Shot 2013-09-11 at 3.07.12 PM

    Finally, there is no basis at this time (if ever) to determine whether the transitions to and from regimes with dual polar jets made this summer any more or less unusual in occurrences of extreme weather events than over the past 10-15 years, which have been presumed to be less complicated by dual jets.

    Scientists tend to believe the increase in extreme weather is tied somehow to the diminishing Arctic ice cover and perhaps more rapid melting of snow cover over Siberia. The “somehow”, especially when coupled to interactions with other plausible and not yet identified factors, remains an open question. No individual or set of observational studies to date and no existing models and modeling strategies are adequate for garnering some insights when dealing with details in regional domains. This is especially true when dual polar jets are added to the mix of complexities. As far as I know, there has not even been a single investigation of the why’s and wherefore’s of

  • NY Times: Did Denier ‘Intimidation Tactics’ Move IPCC To ‘Lowball’ Sea Level Rise And Climate Sensitivity?

    NY Times: Did Denier ‘Intimidation Tactics’ Move IPCC To ‘Lowball’ Sea Level Rise And Climate Sensitivity?

    By Joe Romm on September 10, 2013 at 5:39 pm

    lowThe New York Times has a must-read article on how and why the Intergovernmental Panel on Climate Change “seems to be bending over backward to be scientifically conservative” in its forthcoming assessment.

    Climate Progress has explained many times why the IPCC’s Fifth Assessment Report (AR5) is “an instantly out-of-date snapshot that lowballs future warming because it continues to ignore large parts of the recent literature and omit what it can’t model.” For instance, we have known for years that perhaps the single most important carbon-cycle feedback is the thawing of the northern permafrost. The AR5′s climate models completely ignore it, thereby lowballing likely warming this century.

    The Times explains what the AR5 is doing:

    In one case, we have a lot of mainstream science that says if human society keeps burning fossil fuels with abandon, considerable land ice could melt and the ocean could rise as much as three feet by the year 2100. We have some outlier science that says the problem could be quite a bit worse than that, with a maximum rise exceeding five feet.

    The drafters of the report went with the lower numbers, choosing to treat the outlier science as not very credible.

    In the second case, we have mainstream science that says if the amount of carbon dioxide in the atmosphere doubles, which is well on its way to happening, the long-term rise in the temperature of the earth will be at least 3.6 degrees Fahrenheit, but more likely above 5 degrees. We have outlier science that says the rise could come in well below 3 degrees.

    In this case, the drafters of the report lowered the bottom end in a range of temperatures for how much the earth could warm, treating the outlier science as credible.

    … Is it right to throw out bleeding-edge science in the one case while keeping it in the other?

    I’m not certain that the upper ranges of sea level rise projections are an “outlier.” A good discussion of the recent literature can be found in this January 2013 RealClimate post by Stefan Rahmstorf. His and other research suggests sea level rise could easily be 5 feet if we don’t reverse emissions trends soon.

    Similarly, plenty of recent research supports a higher than expected warming this century — see “Science Stunner (11/12): Observations Support Predictions Of Extreme Warming And Worse Droughts This Century” and, from August, “Ocean Acidification May Amplify Global Warming This Century Up To 0.9°F.”

    The key point is that while many in the media seem to buy into the myth that the IPCC overstates future impacts, the NY Times points out “it is interesting to see that in these two important cases, the panel seems to be bending over backward to be scientifically conservative.” The NYT notes “there are climate scientists not serving on the committee this year” whose “fear is that the intergovernmental panel might be pulling punches.”

    The question, then, is why is the IPCC so conservative, why does it appear to be pulling its punches? True, a certain degree of caution is inherent in science, which is by nature skeptical. That goes double in a consensus-based process where any member country can object to any number. But the Times goes further:

    It turns out that the Nobel Prize, welcome as it might have been back in 2007, served the same function it has for many other scientists who have won it over the years: it painted a fat target on the committee’s back. The group has been subjected to attack in recent years by climate skeptics. The intimidation tactics have included abusive language on blogs, comparisons to the Unabomber, e-mail hacking and even occasional death threats.

    Who could blame the panel if it wound up erring on the side of scientific conservatism? Yet most citizens surely want something else from the group: an unvarnished analysis of the risks they face.

    It would certainly be a shame if the IPCC felt in the least bit cowed by the shameless tactics of the most successful disinformation campaign in history. The IPCC does science no favor by pulling its punches. Future generations are all but certain to suffer through the worst-case scenario — multiple, simultaneous catastrophes — if we keep taking no serious action. They won’t much care why the scientific community pulled its punches, only that they are stuck with the grim consequences for decades if not centuries.

    To its credit, the New York Times doesn’t end its story there:

    To be clear, even if the Intergovernmental Panel on Climate Change ends up sticking with the lowball numbers in these two instances, they are worrisome enough. As best scientists can tell, the question with sea level is not whether it is going to get to three feet and then five feet of increase, but merely whether it will happen in this century or the next.

    Likewise, with temperature, the panel is saying only that the lowball numbers are possible, not that they are likely. In fact, the metric used in the scientific literature, the temperature effect of doubled carbon dioxide, is merely a convenient way of comparing studies. Many people make the mistake of thinking that is how much of a global temperature increase will actually occur.

    At the pace we are going, there is no reason to think that we will stop burning fossil fuels when carbon dioxide doubles. We could be on our way to tripling or quadrupling the amount of that heat-trapping gas in the atmosphere. In that case, experts believe, even an earth that turns out to be somewhat insensitive to carbon dioxide will undergo drastic changes.

    Precisely. Climate Progress and others have been endeavoring to make this point for years.

    In terms of real world warming and its impact on humans, the equilibrium climate sensitivity (ECS) is a mostly theoretical and oversimplified construct. The ECS tells you how much warming you would get IF we started slashing emissions asap and stabilized carbon dioxide concentrations in the air around 550 parts per million (they are currently at 400 ppm, rising over 2 ppm a year, and accelerating) — AND IF there were no slow feedbacks like the defrosting permafrost (or acidification slowing the uptake of carbon by the ocean).

    Obviously, the high estimates are even scarier. So it would be nice to hear an explanation from the drafters of this coming report as to why they made decisions that effectively play up the low-end possibilities. But with the report still officially under wraps, they are not speaking publicly. We are thus left wondering whether it is a matter of pure professional judgment — or whether they have been cowed by the attacks of recent years.

    Even better would be if the IPCC fixed the problem in the final draft.

  • Hand the power of preferences back to the people

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    Hand the power of preferences back to the people

    By ABC’s Antony Green

    Posted 2 hours 52 minutes ago

    The answer to the Senate’s electoral malaise doesn’t lie in punishing minor parties, but rather in handing the power over preferences back to the voters, writes Antony Green.

    The debate over micro-parties and their impact on the 2013 Senate election result has a terrible sense of déjà vu for me.

    Yesterday I dug through my scrapbooks to find past articles by me going back nearly two decades warning about how the loose rules on the registration of political parties, as well as the use of ‘above the line’ group preference ticket voting, would lead to giant ballot papers and distorted election outcomes.

    I first wrote on the subject for the Sydney Morning Herald on February 16, 1995, warning that the then record number of 24 registered parties could produce a ballot paper one metre long for the 1995 NSW Legislative Council election.

    The election resulted in the first example of preference ‘harvesting’ with the election of Alan Corbett from a party called A Better Future for Our Children. Collecting preferences from all the other micro-parties on the ballot paper, he was elected despite polling just 1.28 per cent of the vote and spending only $1,589 on his campaign.

    It was an example noticed by others, especially a certain Glenn Druery, who has come to prominence in recent times, advising micro-parties as the so-called ‘preference whisperer’.

    In 1997, I returned to the issue of preference harvesting for the NSW Legislative Council. In the Sydney Morning Herald on June 10, 1997, I wrote:

    Under current electoral laws, the 1999 election for the NSW Legislative Council could be reduced to political farce. Instead of 21 members elected reflecting the will of the people, the result could be distorted by electoral rorting and voter confusion.

    I went on to warn about the dangers of larger ballot papers and smaller print size, and prophetically wrote:

    The result of the election could be determined by voters incapable of reading the ballot paper, unable to manipulate a ballot paper one metre square, or simple bewildered and unable to find the party they want to vote for.

    I also noted that:

    The current growth in registered parties is clearly about manipulating this process with a string of stalking horse parties with attractive names running to attract votes that can be delivered as preferences to other related minor parties or perhaps to one of the major parties.

    A surge of minor-party registrations in the run-up to the 1999 NSW Legislative Council election saw me return to the topic and warn that:

    Voters will be faced with a farcical ballot paper stacked with stalking-horse parties, the final result owing more to shady backroom deals and the random chance of the draw for ballot positions. The state’s political balance of power may well fall to a bunch of ragtag political fringe dwellers. (Sydney Morning Herald, January 27, 1999)

    I then warned that voters would be forced to manipulate a ballot paper the size of a small tablecloth, a prediction that came true when 264 candidates in 81 groups nominated, the parties and candidates triple decked across a ballot paper one metre wide by 700mm deep.

    On March 11, 1999, as nominations were about to close, I warned that the:

    … 60 or so micro-parties that have mushroomed since the start of the year are organising a complex swap of preferences. To take part, political fringe-dwellers from across the political spectrum have been prepared to ignore ideological differences for their chance at the Holy Grail of election to the Legislative Council. It is like a giant Lotto syndicate, with one or two of the number winning election to a prize job that in eight years delivers more than a million dollars in salary and allowances and gives influence over all government legislation.

    My suggested solution:

    … abolish ticket preferencing, forcing parties to campaign for votes rather than lobby for the preferences of other parties.

    After the close of nominations, I returned to the subject on March 17, 1999, and wrote:

    The man who understands how to use the system best is Glenn Druery of an until now unknown party called People First. His direct flow of preferences, and the secondary flow as intermediary parties are excluded, means his election is almost certain.

    In the end I was wrong about Druery’s election. One of his front parties, the Marijuana Smokers Rights Party, had a favourable ballot draw and polled too well, knocking Druery out and instead electing Malcolm Jones of the Outdoor Recreation Party, who received just 0.2 per cent of the vote.

    Jones’s victory came about thanks to preferences from 22 other parties, including Marijuana Smokers Rights, the Three Day Weekend Party, the Gay and Lesbian Party (which apparently had no gay and lesbian members), Animal Liberation, the Four Wheel Drive Party, the Marine Environment Conservation Party, the Women’s Party/Save the Forests and so on. How complex the preference arrangements were is shown by the fact that eight of the 22 parties that helped elect Jones in fact polled more votes than him.

    After the election I undertook research on how voters reacted to the tablecloth ballot paper by comparing the preferences of below the line voters with the registered above the line preference tickets.

    It was clear that several of the party names were designed to deceive voters, tricking them into voting for a party and then harvesting the preferences and sending them elsewhere.

    • The Marijuana Smokers Rights Party directed preferences to Glenn Druery and Malcolm Jones, but of those who voted below the line for the party, 41 per cent gave preferences to the Greens and 12 per cent to the Australian Democrats.
    • The Gay and Lesbian Party directed its preference ticket to Druery and Jones, but below the line voters directed 33 per cent of preferences to the Greens, 29 per cent to the Australian Democrats and 12 per cent to Labor.
    • The Animal Liberation Party directed its ticket preferences to Malcolm Jones, but 44 per cent of below the line votes flowed to the Greens as preferences.
    • The Marine Environment Conservation Party had ticket preferences to Malcolm Jones but below the line votes flowed 59 per cent to the Greens.
    • The Wilderness Party had ticket preferences for Druery and Jones, but 51 per cent of below the line preferences went to the Greens.
    • The Women’s Party/Save the Forests had ticket preferences to Druery and Jones, but 48 per cent of below the line preferences flowed to the Greens.

    This is clear evidence that people who voted for the party below the line considered them to be environment parties and gave preferences accordingly. However, anyone thinking that way and voting above the line found their preferences effectively stolen and delivered to Glenn Druery and Malcolm Jones.

    Writing in the Sydney Morning Herald on September 11, 1999, I used the experience of the NSW tablecloth ballot paper to warn that exactly the same thing could occur at Senate elections.

    At the time Liberal Senator Helen Coonan was proposing a very high threshold quota to help keep minor parties out of the Senate. This was attracting outright opposition from both Labor and the Australian Democrats, but I warned that defending the existing system also risked political fringe dwellers getting hold of the balance of power.

    I wrote that:

    Ticket voting has led to the profusion of micro-parties. Like-minded parties unable to resolve personal and ideological differences are able to stand multiple candidates and swap preferences. Instead of micro parties being forced to stand behind a single platform with agreed candidates, ticket voting allows internal differences to go unresolved, with the lottery of the electoral system determining who gets elected

    At the time I supported some form of threshold quota as a solution, a proposal that has re-surfaced again in the light of the current Senate result. I wrote:

    Minimum quotas reward minor parties that build support by agreeing on common platforms and candidates, and campaign for votes instead of preferences. Such activities are the training ground in which future Senators will learn the skills to carry out their important role in the house of review.

    I no longer support threshold quotas because it has become more evident that above the line ticket voting is the real cause of parties being elected from low votes. A better solution is to deal with the cause of the problem, not impose an arbitrary threshold.

    If ticket preferencing under the control of parties were retained while imposing a threshold quota, the system would still be rorted. The current system advantages micro-parties set up as fronts for each other. Ticket voting with threshold quotas would advantage micro-parties set up as fronts for the major parties.

    The best way to reform the Senate’s electoral system is to deliver the power over preferences back into the hands of voters, the reform that was introduced in NSW after the farce of the 1999 Legislative Council election.

    I would propose the following measures.

    Tighten the regulation of parties

    Federal law requires only 500 members to register a party, where applying the same standards as NSW would require more than 2,000. NSW also requires that parties be registered 12 months before an election, a provision very much driven by the Labor Party’s shock at the sudden emergence of the No Aircraft Noise Party ahead of the 1995 election.

    A surge of newly registered parties was a feature of the 1999 NSW election and was repeated ahead of the 2013 federal election, helped by micro-parties having some idea of when the election was due to be held. Some delay in party registrations becoming effective will help in weeding out less serious parties.

    Stopping over-lapping party membership is also important. David Leyonhjelm, set to be elected as the Liberal Democrat Senator for NSW, is the registered office of both the Liberal Democrats and the Outdoor Recreation Party (Stop the Greens). Members of his party also seem to be closely associated with the Smokers Rights Party and the Republican Party.

    Political parties should be more heavily regulated as registration brings with it significant advantages. Parties are able to have their names printed on the ballot paper, and have the major advantage of being able to nominate candidates for any contest in the country without the need for local nominators. The Liberal Democrats took advantage of this provision to nominate NSW-based candidates for the Tasmanian Senate election.

    Keep ‘above the line’ voting but abolish between-party preferences

    The NSW reforms changed the meaning of a single ‘1’ above the line. Instead of adopting a ticket of preferences, such a vote became a single vote for the selected parties. No further preferences beyond the party were implied.

    Voters were given a new voting option to number groups above the line. So you could vote ‘1’ Family First and ‘2’ Liberal, and your vote would go to Family First, and if required later, would go to the Liberal Party. Parties can try to influence voters to fill in squares above the line, but they cannot control them.

    The NSW above the line voting system advantages parties that actively campaign, as by distributing how-to-votes with preference recommendations, parties can influence preference flows. Parties that don’t campaign for first preferences lose power to control how their preferences flow.

    This system is appropriate for the NSW Legislative Council where 21 members are elected, but may need some tweaking for the Senate where only six members are elected. In NSW, only 20 per cent of voters have been using the above the line preference option, though the rate has varied by party. Its use would probably increase if introduced for federal elections.

    NSW has had three elections using the new system, but only once have preferences changed the order candidates were elected – that was in 2011 when just enough voters filled in preferences to deprive Pauline Hanson of election to the final seat.

    Deposit laws

    Another increase in deposits may be required. An additional deposit could be introduced for groups wanting to have an above the line voting box.

    Optional below the line preferences

    Even if nothing else changed, a simpler method for below the line voting must be introduced. At the NSW Senate election, voters had two choices: select a single ticket above the line, or give 110 preferences below the line. In the Victorian Legislative Council only five preferences are required for a valid below the line vote, and some similar option must be adopted for the Senate.

    Changes to formulas

    The new above the line voting option is a form of optional preferential voting and will therefore increase the number of exhausted preferences, as will optional preferential voting below the line.

    The formulas for dealing with surplus to quota preferences of elected candidates will need to be changed so that exhausted preferences stay with an elected candidate, while ballot papers with preferences are given greater chance of continuing in the count. There are also other technical aspects of how surplus to quota preferences are dealt with that would need to change.

    No doubt the natural reflex of the larger parties will be to clamp down on the new entrants to politics. You can expect tough party registration laws, big increases in deposits and relatively high threshold quotas to be the first response.

    Punishing minor parties is the wrong approach as it addresses only the symptom of the Senate’s electoral malaise, not its cause. That cause is group ticket voting preferences and the tight control on preferences by political parties both major and minor.

    The real solution is one that hands the power over preferences back to the voters. The Senate should be elected to reflect the will of the electorate, not the arranged deals of a few backroom operators.

     

  • Skyscraper-sized Waves Recorded Beneath the Ocean

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    Skyscraper-sized Waves Recorded Beneath the Ocean

    Sep 10, 2013 01:21 PM EDT
    The deep-sea waves are 800 feet tall, as high as a skyscraper.

    For the first time, scientist have recorded an enormous wave the size of a skyscraper breaking at a key location at the bottom of the South Pacific Ocean. (Photo : Tom Peacock, MIT | Wide Eye Productions)

    For the first time, scientists have recorded an enormous wave the size of a skyscraper breaking at a key location at the bottom of the South Pacific Ocean.

    Researchers from the University of Washington recorded the 800 foot wave breaking at a key bottleneck for ocean circulation where water of different density collides. Such massive underwater waves play a crucial role in long-term climate cycles, transporting heat, carbon, and nutrients around the world. Where and how these waves break is important to global climate as well as ocean circulation, the researchers said.

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    “Climate models are really sensitive not only to how much turbulence there is in the deep ocean, but to where it is,” said lead author Matthew Alford, an oceanographer in the UW Applied Physics Laboratory. “The primary importance of understanding deep-ocean turbulence is to get the climate models right on long timescales.”

    Alford led an expedition to the Samoan Passage, a narrow channel in the South Pacific Ocean that funnels water flowing from Antarctica. There, dense water around Antarctica sinks deep into the Pacific, eventually surging through a 25-mile gap in the submarine landscape northeast of Samoa.

    “Basically the entire South Pacific flow is blocked by this huge submarine ridge,” Alford said. “The amount of water that’s trying to get northward through this gap is just tremendous — 6 million cubic meters of water per second, or about 35 Amazon Rivers.”

    The surging water that flows through the gap forms giant submarine waves. Using instruments from their research vessel, Alford and his team observed waves breaking about three miles beneath the ocean’s surface. The team’s measurements show that when these giant waves break they produce an mixing effect that’s 1,000 to 10,000 times greater than what occurs in surrounding slow-moving waters.

    “Oceanographers used to talk about the so-called ‘dark mixing’ problem, where they knew that there should be a certain amount of turbulence in the deep ocean, and yet every time they made a measurement they observed a tenth of that,” Alford said. “We found there’s loads and loads of turbulence in the Samoan Passage, and detailed measurements show it’s due to breaking waves.”

    Alford said that the Samoan Passage is important because it mixes so much water, but that deep-sea mixing occurs in waters around the globe, adding that the mixing effect explains why cold water does not permanently pool at the bottom of the ocean.

    With a better understanding deep-ocean mixing, Alford said it could help create better simulations of global ocean currents and identify key positions to place instruments to monitor changes.

     

  • More than half of Queensland facing high fire danger

    More than half of Queensland facing high fire danger

    ABC Updated September 11, 2013, 11:35 am

    More than half of Queensland faces a very high fire danger, with firefighters on alert as hot and windy conditions affect large parts of the state.

    Peter Varley from the Rural Fire Service (RFS) says areas under threat stretch from the South Australia-Northern Territory border east to Toowoomba.

    Weather bureau spokeswoman Amber Young, meantime, says conditions are dangerous in the state’s west.

    “It will be quite dry and very windy out through those parts and hence the fire dangers will be enhanced,” she said.

    “Expecting temperatures around five to seven degrees [Celsius] above the September average.”

    Mr Varley from the RFS warns that in the current conditions a blaze could start easily.

    “We would ask people to be very vigilant and to be extremely careful with any grinding, welding, that sort of thing that can produce sparks,” he said.

    “Very dry, low humidity and high winds coming in from the west, so that’s a pretty dangerous situation.”

    He said the conditions were caused by a number of factors.

    “It’s caused by the winds from the west that are coming in from the desert areas obviously and then we’ve got very low humidity, so not much moisture in the air and temperatures are up to around 35 degrees,” he said.

    Residents urged to delay burn-offs

    Landholders are being advised to delay burn-offs this week because of the fire risk.

    Residents in inland areas at Mackay, central Queensland, the Wide Bay and Sunshine Coast are being warned to prepare for very high to extreme fire conditions today and tomorrow.

    RFS spokesman Peter Hollier says high temperatures, strong winds and low humidity make for perfect fire conditions and landholders need to be on alert.

    “If they are doing any hazard reduction burning they may want to consider putting that off for a few days until conditions ease,” he said.

    He says any fire that occurs during a heightened fire period is often unpredictable and fast moving and can endanger lives.

    Meanwhile, Brisbane will experience its hottest day in six months, expecting to reach 32 degrees Celsius in the city.

    Ipswich will be even warmer at 33C.