February 9, 2017 — The Next / Previous buttons on the sea-level analysis pages now do a better job of taking you to a related page (e.g., another site in the same country/coast).
January 26, 2017 — Try the new (preliminary) country/coastline code list on the Data page.
January 21, 2017 — Article on WUWT about this site: New website gives you the real deal on sea level rise and rates.
January 5, 2017 — First release of interactive sea-level analysis and visualization tools.
There are currently 1269 tide-station locations in the database, with sea-level data.
There are still a few rough edges, and a hefty to-do list; your feedback is valued!
December 25, 2016 — Merry Christmas! For your holiday enjoyment, here are
five facts about climate change,
which I posted on Quora.
Here's an earlier Quora screed, about what it means to be a “skeptic” about global warming.
December 2, 2016 — North Carolina's top environmental official, DEQ Secretary Don van der Vaart, has written two excellent letters about the role and policies of the EPA, which are worth your time to read. The first, which was also signed by the top environmental officials of four other States, was to President-elect Donald Trump. The second was to EPA Administrator Gina McCarthy. ↑
April 6, 2016 — Sea-level is not rising everywhere. The measured rate of coastal sea-level change varies from -17.59 mm/yr at Skagway, Alaska to +9.39 mm/yr at Kushiro, Japan. The average, as measured by the world's best long-term coastal tide gauges, is just under +1.5 mm/yr. That rate has not increased (“accelerated”) in over 85 years.
February 3, 2016 — New "Feedbacks" page added. Everything You
Always Wanted to Know About Climate Feedbacks* (*But Were Afraid to
It's still a bit rough around the edges. As always, I would be grateful for your
feedback comments & corrections.
December 18, 2015 — The Heartland Institute is
one of the world's finest public policy think tanks, and they've compiled
an impressive collection of information about the COP-21
Paris climate conference, here:
P.S. (12/28/2015) — someone complained about this link, who had apparently been misled by the Peter Gleick / DeSmogBlog forged document smear of Heartland. If you're not familiar with the story, read on. Dr. Gleick tried to anonymously distribute a “strategy memo” purportedly leaked from Heartland, which was actually a forgery, almost certainly created by Gleick, himself. Here's an article about the affair, from The Atlantic. Gleick was subsequently rewarded for his crimes by National Geographic's ScienceBlog subsidiary, where he's now their resident “scientist, innovator, and communicator” on global water, environment, climate, identity theft, fraud, character assassination, and forgery.
December 14, 2014 — Good essay today in USA Today by Rep. Lamar Smith (R-TX), chairman of the U.S. House Science, Space and Technology Committee.
December 8, 2015 — The Resources page of this site got a long-overdue reorganization. Suggestions for further improvement are very welcome.
October 16, 2015 — Environmentalist David Siegel shares What I Learned about Climate Change. He learned a lot, and so can you.
May 12, 2015 — Australia's Joanne Nova reports on The scandal of sea levels — rising trends, acceleration — largely created by adjustments.
May 5, 2015 — Here are Dave Burton's remarks at the North Carolina Coastal Resources Commission meeting in Manteo, NC, on April 29, 2015. It's part of the latest chapter in North Carolina's simmering kerfuffle over sea-level rise.
April 2, 2013 — NOAA has released a major update of their tidestation data, with updated trend analysis and graphs for many stations, and many newly-analyzed PSMSL stations! See the new 2013 spreadsheets on the sealevel.info data page. (Note: as a result of these changes there are a few dead links in some of the older spreadsheets, which I've not yet fixed.)
March 23, 2013 — Rev 0.7, added a spreadsheet with just the 45 NOAA-administered GLOSS-LTT tide stations, and also one with just the 42 of those 45 for which there was data through 2011. (The other stations were three Pacific Islands: Johnston Atoll, Pago Pago, and Chuuk.)
Notes: In 2012 NOAA recalculated sea-level trends for those 42 U.S. tide gauges using data through 2011. The results were illuminating.
The sea-level records for the 42 gauges had an average duration of 87.4 years (through 2011), and NOAA's calculated trends had an average confidence interval of ±0.515 mm/yr.
When new (through 2011) trends were compared to the old (through 2006) trends, 23 sites showed slight declines in the rate of sea-level rise, and 19 showed slight increases.
A simple, unweighted average of the 42 gauges comes to 2.025 mm/yr average rate of SLR through 2006, or 2.026 mm/yr through 2011 (a difference of one one-thousandth of a millimeter/year), or 1.286 mm/yr if you include Peltier's VM2 GIA adjustments.
The bottom line is that, as measured by the 42 best U.S. long-term trend tide stations, the average rate of sea-level rise over the 5-year period from 2006-2011 is virtually identical to the rate for the full data record (averaging 87.4 years duration) -- more proof that there's been no detectable acceleration in rate of sea-level rise in response to elevated CO2 levels.
March 8, 2013 — updated spreadsheets with latest NOAA and PSMSL data.
March 1, 2013 — Rev 0.6, most of the spreadsheets here now have clickable column headers. Click a column header to sort the data by that column. Click twice to reverse the sort order.
September 29, 2012 — Rev. 0.5, added more papers to the Papers page, and more resources to the Resources page
August 23, 2012 — Rev 0.2-0.4, moved resources list to Resources page, and added BlogRoll, Papers & Data pages
August 19, 2012 — Rev 0.1
August 15, 2012 — under construction
Last modified: 09-Feb-2017 (version 78)
Copyright © 2012-2016, David A. Burton.
Note: the “last modified” date and version number on this web
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