The Forum > Article Comments > What ever happened to climate change in Australia? > Comments
What ever happened to climate change in Australia? : Comments
By David Leigh, published 16/1/2014Now, as we find ourselves 6-months into Abbott's Australia, there is little or no discussion.
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Posted by warmair, Wednesday, 22 January 2014 1:23:44 PM
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Warmair.
Oops I erred I'll dig out the 2013 IPCC report. I rather lazily and unsually relied on a link I hadn't thoroughly checked. Nothing you wrote about ice caps trumps the graphs or the experience of sailors trapped in unseasonal expanding ice as occurred this summer in both the Artic and Antarctic. Posted by imajulianutter, Wednesday, 22 January 2014 2:28:24 PM
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Nutter
Ice volume is more important than area, but nevertheless September 2012 had the lowest ice area on record in the arctic. http://psc.apl.washington.edu/wordpress/wp-content/uploads/schweiger/ice_volume/BPIOMASIceVolumeAnomalyCurrentV2.png Ice thickness http://psc.apl.washington.edu/wordpress/wp-content/uploads/schweiger/ice_volume/Bpiomas_plot_daily_heff.2sst.png Below is a link to ice area, now this is interesting because it demonstrates why we see the difference between the summer minimum and winter maximums increasing as ice is lost. http://nsidc.org/arcticseaicenews/charctic-interactive-sea-ice-graph/ Posted by warmair, Thursday, 23 January 2014 4:21:26 PM
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Could all who have posted on this blog, please, go to either Independent Australia or De Smog Blog and read the article by James Lawrence Powell before posting another comment about climate change.
Posted by Brian of Buderim, Friday, 24 January 2014 9:50:41 AM
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Couldn't find your reference but if the juvenile rubbish on those sites is any indication then the article is likely rubbish also.
Posted by imajulianutter, Friday, 24 January 2014 11:20:43 AM
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http://www.climate2013.org/images/uploads/WGI_AR5_SPM_brochure.pdf
yes that's it. Now check and understand the astonishing admissions in the following '• In addition to robust multi-decadal warming, global mean surface temperature exhibits substantial decadal and interannual variability (see Figure SPM.1). Due to natural variability, trends based on short records are very sensitive to the beginning and end dates and do not in general reflect long-term climate trends. As one example, the rate of warming over the past 15 years (1998–2012; 0.05 [–0.05 to 0.15] °C per decade), which begins with a strong El Niño, is smaller than the rate calculated since 1951 (1951–2012; 0.12 [0.08 to 0.14] °C per decade)5. {2.4}' P3 What global mean surface temps have fallen? surely not? Well even the IPCC agree logic and maths say so. 'The observed reduction in surface warming trend over the period 1998 to 2012 as compared to the period 1951 to 2012, is due in roughly equal measure to a reduced trend in radiative forcing and a cooling contribution from natural internal variability, which includes a possible redistribution of heat within the ocean (medium confidence' P13 What cooling not warming? Christ what idiot wrote this admission. 'and, in some models, an overestimate of the response to increasing greenhouse gas and other anthropogenic forcing' p13 Eh? Well I never! 'There is robust evidence that the downward trend in Arctic summer sea ice extent since 1979 is now reproduced by more models than at the time of the AR4, with about one-quarter of the models showing a trend as large as, or larger than, the trend in the observations. Most models simulate a small downward trend in Antarctic sea ice extent, albeit with large inter-model spread, in contrast to the small upward trend in observations. {9.4}' P15 What? An actual real increase in Antarctic sea ice. No! I wonder what they will make of the extent of the Artic ice in the summer of 13 and Chris Turney's misadventure in the Antarctic in the summer of 13/14. So Turney obviously believed the models rather than observations. So the IPCC 2013 report is wrong? Posted by imajulianutter, Friday, 24 January 2014 12:08:05 PM
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Thanks for the links to prehistory I.e. IPPC Far report 1990. Thats only 23 years out of date.
For somthing just a tad more recent try AR5 2013
http://www.climate2013.org/images/uploads/WGI_AR5_SPM_brochure.pdf
B.3 Cryosphere
Page 7 and while you are at it Page 8
Quote
"Over the last two decades, the Greenland and Antarctic ice sheets have been losing mass,
glaciers have continued to shrink almost worldwide, and Arctic sea ice and Northern
Hemisphere spring snow cover have continued to decrease in extent (high confidence) (see
Figure SPM.3). {4.2–4.7}"
Quote
"The annual mean Arctic sea ice extent decreased over the period 1979 to 2012 with a rate that was very likely in the
range 3.5 to 4.1% per decade (range of 0.45 to 0.51 million km2
per decade), and very likely in the range 9.4 to 13.6%
per decade (range of 0.73 to 1.07 million km2
per decade) for the summer sea ice minimum (perennial sea ice). The
average decrease in decadal mean extent of Arctic sea ice has been most rapid in summer (high confidence); the spatial
extent has decreased in every season, and in every successive decade since 1979 (high confidence) (see Figure SPM.3).
There is medium confidence from reconstructions that over the past three decades, Arctic summer sea ice retreat was
unprecedented and sea surface temperatures were anomalously high in at least the last 1,450 years. {4.2, 5.5}"