A Double Take on a Single Nomination
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From RadioIowa Iowan Sam Clovis nominated to be USDA undersecretary July 20, 2017 By O. Kay Henderson President Trump has nominated an Iowan who was a top policy advisor on Trump’s 2016 presidential campaign to serve as the USDA Undersecretary for research, education and economics. Sam Clovis, formerly of Hinton, Iowa, has been working in…
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July 21, 2017 at 07:28PM
Some quick housekeeping
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Some of our users log in via twitter. This causes them to show invalid email addresses in WordPress, usually some form of *example.com This is causing these users’ comments to get automatically black holed. I suggest these users use a WordPress log in with a valid email address. And if you feel like using this…
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July 21, 2017 at 04:27PM
Shifting storms to bring extreme waves, seaside damage to once placid areas
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Sea level rise no longer the only impact climate change will bring to the world’s coastlines From Eurekalert Public Release: 20-Jul-2017 University of New South Wales The world’s most extensive study of a major stormfront striking the coast has revealed a previously unrecognised danger from climate change: as storm patterns fluctuate, waterfront areas once…
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July 21, 2017 at 02:27PM
Analysis Of Sea Level Trends At Newlyn
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By Paul Homewood
I have been playing around with the sea level data at Newlyn, which I published yesterday, in order to try and detect whether the rate of rise is accelerating.
To recap, this is the tide gauge record since 1915:
I have plotted the 10-year trends on an overlapping monthly basis:
At the end of 2016, the trend was 3.23mm/yr, ie between 2007 and 2016. This of course is higher than the trend of 1.83mm recorded over the full history of the gauge.
But does this mean that the rate of rise is actually accelerating?
What the data appears to show is that there have been many other 10-year periods when the rise was as great, or even greater. For instance, the 1920s saw the annual trend rise to 9mm, as did the mid 1940s to early 50s.
These peaks in trend oscillate with other periods when sea levels were actually falling for long periods.
It is well known that sea levels in the mid 20thC were rising as fast as now. But I must admit, this pattern of sharp peaks and troughs is actually quite an eye opener.
What it does emphasise is that we really cannot put draw any meaningful conclusions from the last decade or so.
What also stands out like a sore thumb is the sharp fall in sea levels in the early 1990s, due of course to Pinatubo. It is the natural recovery from this which gives the impression of “acceleration” since. In fact, as the chart shows, the 10-Year trend peaked in 2001 at 8.2mm/year. Since then, it has gradually subsided.
We can justifiably conclude that the current rate of sea level rise at Newlyn is far from unprecedented, and that it has been decelerating since the turn of the century.
FOOTNOTE
In for a penny!!
While I am at it, I thought I would do North Shields as well.
As you can see, we see a very similar pattern of peaks and troughs. As North Shields data goes back to 1895, we can also see an even more dramatic peak culminating in 1915.
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July 21, 2017 at 01:18PM
Iowa Climate Science Education 