Why I Don’t Deny – Part 2

By Kip Hansen – Re-Blogged From WUWT

Note:  Please read Part 1 before reading this — this is a continuation of that essay (a rather long continuation….)

The last point I made in Part 1 of this essay was this:

The IPCC in their synthesis report for policy makers says that human emissions of greenhouse gases [“atmo­spheric concentrations of carbon dioxide, methane and nitrous oxide”]  and “other anthropogenic drivers,” are  “extremely likely to have been the dominant cause of the observed warming since the mid-20th century.”

climate_denial_Part-2_yello

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Rise and Fall of Central England Temperatures

By Tony Brown – Re-Blogged From http://www.WattsUpWithThat.com

[The many good charts did not transfer in pasting. Please use the link at bottom to see them. -Bob]

This article examines the continued cooling of CET this century

  • Looks at a similar scenario of regional cooling in America
  • Examines CET related urbanisation issues, and the current Met office allowances for this
  • Notes the centuries long general warming of our climate.
  • Notes considerable English seasonal variability over the centuries
  • Examines the key component parts of the weather that affect the British Isles
  • Queries whether wind direction, strength and longevity are major factors in shaping our climate over the centuries.

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Lindzen, Soon and Spencer debunked?

By Andy May – Re-Blogged From http://www.WattsUpWithThat.com

On Bret Stephens facebook page, I [complimented] Mr. Stephens on what I thought was a very good column. I also noted that the eminent climate scientist Dr. Richard Lindzen had said similar things. To this a George Smith replied, in part, as follows:

“Few “skeptics” have been debunked as much as Lindzen and Spencer.”

Link to comment here.

If you follow the link you will see it is followed with a google search for “Lindzen debunked.” No support, no data, no peer reviewed references, just anything that says “Lindzen debunked.” This is “internet slime” at its worst. We see a lot of this sort of reprehensible behavior around climate science, often by people who have no scientific background at all. But, I am a scientist with 42 years’ experience and have been studying and writing about climate science for years, so I do want to address some of the scurrilous attacks found in this google search.

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Climate and Human Civilization for the Past 4,000 Years

By Andy May – Re-Blogged From http://www.WattsUpWithThat.com

The Holocene Thermal Optimum ended at different times in different parts of the world, but it had ended everywhere by 4,000 BP (BP here means the number of years before 2000) and the world began to cool. The timeline shown in Figure 1 shows the GISP2 Central Greenland ice core temperature proxies in blue and the HadCRUT 4.4 surface temperature estimates for the same area in red.

climate-civilization-gisp-chart

Figure 1 (click on the figure to download in full resolution)

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Long -Term Climate Change: What Is A Reasonable Sample Size?

By Dr. Tim Ball – Re-Blogged From http://www.WattsUpWithThat.com

Recent discussion about record weather events, such as the warmest year on record, is a totally misleading and scientifically useless exercise. This is especially true when restricted to the instrumental record that covers about 25% of the globe for at most 120 years. The age of the Earth is approximately 4.54 billion years, so the sample size is 0.000002643172%. Discussing the significance of anything in a 120-year record plays directly into the hands of those trying to say that the last 120-years climate is abnormal and all due to human activity. It is done purely for political propaganda, to narrow people’s attention and to generate fear.

The misdirection is based on the false assumption that only a few variables and mechanisms are important in climate change, and they remain constant over the 4.54 billion years. It began with the assumption of the solar constant from the Sun that astronomers define as a medium-sized variable star. The AGW proponents successfully got the world focused on CO2, which is just 0.04% of the total atmospheric gases and varies considerably spatially and temporally. I used to argue that it is like determining the character, structure, and behavior of a human by measuring one wart on the left arm. In fact, they are only looking at one cell of that wart for their determination.

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Climate and Human Civilization Over the Last 18,000 Years

By Andy May – Re-Blogged From http://www.WattsUpWithThat.com

This is an updated timeline of climatic events and human history for the last 18,000 years. The original timeline was posted in 2013. The updated full size (Ansi E size or 34×44 inches) Adobe Reader version 8 PDF can be downloaded here or by clicking on Figure 1. It prints pretty well on 11×17 inch paper and very well on 17×22 inch paper or larger. To see the timeline in full resolution or to print it, you must download it. It is not copyrighted, but please acknowledge the author if you use it.

climate-human-civilization

Figure 1 -click for a much larger, printable poster (PDF)

References to the images and data are given in this essay as hyperlinks. I’ve done my best to verify the accuracy of the content by checking multiple sources. When references had different dates for the same event, I chose the most commonly cited date or the most prestigious source. All dates (except some in the modern era) are given as “BP” or before the year 2000 for simplicity, using 1950 (the radiocarbon zero) was too cumbersome.

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Natural Climate Variability

By Andres Valencia – Re-Blogged From http://www.WattsUpWithThat.com

[A comment to http://wattsupwiththat.com/2015/11/21/keeping-up-the-heat-on-the-uk-supreme-court/ ]

Temperature fluctuations over the past 17,000 years showing the abrupt cooling during the Younger Dryas.
The late Pleistocene cold glacial climate that built immense ice sheets terminated suddenly about 14,500 years ago [12,500 BC], causing glaciers to melt dramatically.
About 12,800 years ago [10,800 BC], after about 2,000 years of fluctuating climate, temperatures plunged suddenly and remained cool for 1,300 years.
About 11,500 years ago [9,500 BC], the climate again warmed suddenly and the Younger Dryas ended.
Also showing the Holocene Warm Period, the Roman Warm Period and the Medieval Warm Period compared to today’s small rise in average temperature. Graphic by Don J. Easterbrook.
See See Geologic Evidence of Recurring Climate Cycles and Their Implications for the Cause of Global Climate Changes Don J. Easterbrook (2011). Department of Geology, Western Washington University, .pdf, at http://myweb.wwu.edu/dbunny/pdfs/easterbrook_geologic-evidence-of-recurring-climatic-cycles.pdf
See also The Intriguing Problem Of The Younger Dryas – What Does It Mean And What Caused It (Guest post by Don J. Easterbrook
Dept. of Geology, Western Washington University) – Watts Up With That? (June 19, 2012), at http://wattsupwiththat.com/2012/06/19/the-intriguing-problem-of-the-younger-dryaswhat-does-it-mean-and-what-caused-it/