Niche Modeling The Power of Numeracy 2014-12-20T02:56:44Z http://landshape.org/enm/feed/atom/ admin http://landshape.org/enm <![CDATA[WhyWhere – An R package implementation for species distribution modelling]]> http://landshape.org/enm/?p=6540 2014-12-20T02:56:44Z 2014-12-20T02:54:38Z This package implements the species modelling algorithm called WhyWhere documented in the article “Improving ecological niche models by data mining large environmental datasets for surrogate models” by David R.B. Stockwell in Ecological Modelling Volume 192, Issues 1–2, 15 February 2006, Pages 188–196. (< href="http://arxiv.org/pdf/q-bio/0511046.pdf">PDF). Download the package WhyWhere_0.1.tar

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admin http://landshape.org/enm <![CDATA[Anomaly – a new R package for detecting and correcting instrument errors]]> http://landshape.org/enm/?p=6529 2014-12-20T00:37:53Z 2014-12-20T00:17:58Z This package performs operations known as “homogenization” on time series data that is subject to various non-natural anomalies such as instrument baseline changes and spikes. Preliminary testing indicates that it has a considerably higher sensitivity to small baseline shifts than a Chow test. Below is a scatterplot of the size of a single shift on […]

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admin http://landshape.org/enm <![CDATA[Book: Niche Modeling]]> http://landshape.org/enm/?p=6517 2014-11-28T22:21:08Z 2014-11-28T22:20:09Z Using theory, applications, and examples of inferences, Niche Modeling: Predictions from Statistical Distributions demonstrates how to conduct and evaluate niche modeling projects in any area of application. It features a series of theoretical and practical exercises for developing and evaluating niche models.

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admin http://landshape.org/enm <![CDATA[BoM copies me, inadequately]]> http://landshape.org/enm/?p=6478 2014-10-31T02:22:37Z 2014-10-31T01:06:19Z Yesterday’s post noted the appearance of station summaries at the BoM adjustment page attempting to defend their adjustments to the temperature record at several stations. Some I have also examined. Today’s post compares and contrasts their approach with mine. Deniliquin The figures below compare the minimum temperatures at Deniliquin with neighbouring stations. On the left, […]

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admin http://landshape.org/enm <![CDATA[BoM publishing station summaries justifying adjustments]]> http://landshape.org/enm/?p=6472 2014-10-30T07:08:06Z 2014-10-30T06:30:03Z Last night George Christensen MP gave a speech accusing the Bureau of Meteorology of “fudging figures”. He waved a 28 page of adjustments around, and called for a review. These adjustments can be found here. While I dont agree that adjusting to account for station moves can necessarily be regarded as fudging figures, I am […]

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admin http://landshape.org/enm <![CDATA[Kerang: Where is the daily data?]]> http://landshape.org/enm/?p=6453 2014-10-25T10:55:28Z 2014-10-25T10:17:32Z Been looking forward to doing Kerang as I knew it was another dud series from ACORN-SAT. The report is here: Kerang The first thing to notice in plotting up the time series data for the raw CDO and ACORN-SAT is that while the ACORN-SAT data goes back to 1910 the CDO data is truncated at […]

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admin http://landshape.org/enm <![CDATA[Scorecard for ACORN-SAT Quality Assurance – the score so far.]]> http://landshape.org/enm/?p=6437 2014-10-25T10:57:16Z 2014-10-22T05:57:32Z Three more quality tests of stations in the ACORN-SAT series have been completed: Wilcannia Cape Otway Lighthouse Amberley The test measures the deviation of the trend of the series from its neighbours since 1913 (or residual trend). A deviation of plus or minus 0.05 degrees per decade is within tolerance (green), 0.05 to 0.1 is […]

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admin http://landshape.org/enm <![CDATA[Williamtown RAAF – an interesting case]]> http://landshape.org/enm/?p=6432 2014-10-20T11:21:23Z 2014-10-20T11:21:23Z Williamtown RAAF is one case where the quality control test indicates that the adjustments were justified, even though the homogenization in ACORN-SAT produced a strong change in trend. My report is here and Ken has posted graphs for Williamtown, along with a number of sites with large changes in trend by ACORN-SAT. . This illustrates […]

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admin http://landshape.org/enm <![CDATA[Panel tests of the ACORN-SAT temperature network – first results]]> http://landshape.org/enm/?p=6419 2014-10-20T03:16:06Z 2014-10-19T03:34:10Z You may have read Ken Stewart’s excellent blog on the official Australian temperature record. With the publication of the “adjustments.xls” file of the offical adjustments to the raw data in the ACORN-SAT dataset, as reported on JoNova’s blog, there has been a flurry of work behind the scenes, so to speak. Jennifer Marohasy has been […]

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admin http://landshape.org/enm <![CDATA[New energy source confirmed in third party test]]> http://landshape.org/enm/?p=6409 2014-10-09T22:07:45Z 2014-10-09T20:37:07Z As previously covered here, Andre Rossi appears to have delivered the goods… Cold fusion reactor verified by third-party researchers, seems to have 1 million times the energy density of gasoline Andrea Rossi’s E-Cat — the device that purports to use cold fusion to generate massive amounts of cheap, green energy – has been verified by […]

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