{"id":339364,"date":"2024-08-12T17:32:44","date_gmt":"2024-08-12T15:32:44","guid":{"rendered":"https:\/\/climatescience.press\/?p=339364"},"modified":"2024-08-12T17:32:47","modified_gmt":"2024-08-12T15:32:47","slug":"variation-of-50-year-relative-sea-level-trends-northeast-united-states","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=339364","title":{"rendered":"Variation of 50-Year Relative Sea Level Trends\u00a0 \u2014 Northeast United States"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

From Watts Up With That?<\/a><\/p>\n\n\n\n

Note by Kip Hansen<\/a><\/p>\n\n\n\n

I was checking to see if the Water Levels at the tide gauge at The Battery, New York had come back into its normal range \u2013 it had been running exceptionally high and out of line with the long-term trend:<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

And, as we can see, the latest datum is right back in line with the trend, as expected.  There are reasons for the spike that lasted a couple of months.  Savvy readers can inform us in comments.<\/p>\n\n\n\n

Since I was in the NOAA Tides and Currents site, I took a look at the database view called \u201cVariation of 50-Year Relative Sea Level Trends\u201d, seldom visited.  Here it is for The Battery:<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

Do you see that interesting wave shape?   I do.<\/p>\n\n\n\n

What exactly is this?  NOAA says:<\/p>\n\n\n\n

\u201cLinear relative sea level trends were calculated in overlapping 50-year increments for stations with sufficient historical data. The variation of each 50-year trend, with 95% confidence interval, is plotted against the mid-year of each 50-year period. The solid horizontal line represents the linear relative sea level trend using the entire period of record.\u201d<\/strong><\/p>\n\n\n\n

Curiosity took hold and scrolling down the page, I see that NOAA had supplied the same view for 40 tide gauges around the United States.<\/p>\n\n\n\n

Here are 12 selected from the Northeast coast of the United States, first in a PowerPoint slide show, one after another:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

They all have the same\/similar wave form, or the segment of the wave over shorter time periods.  How similar?  Let\u2019s see.<\/p>\n\n\n\n

Putting all 12 images on top of one another, aligning the vertical scales in millimeters:<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

Visually, we can see the wave form repeated at each gauge.  As we get closer to present time, more tide gauges are added to the mix and we see more variability. <\/p>\n\n\n\n

One more look:<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

In the image above, I have aligned the \u201clinear sea level trend using the entire period of record\u201d for each gauge (the arrow points to that line).<\/p>\n\n\n\n

With this view, collectively, we reveal remarkable similarity across the entire range of tide gauges. <\/p>\n\n\n\n

It is possible to see what looks like higher Rates of Relative SLR in the 1950s and the 1960s  than those we see in the latest 50 year period. <\/p>\n\n\n\n

It is also possible to chop off the earliest portions of the chart, leaving only the time period that the tide gauge record shares with the satellite sea level measurement record.  Doing that results in graphs like this one from NASA:<\/a><\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

This graph starts in 1993\u2026and shows that rising trend in the last three 50-year periods of the tide gauge graph.  I have blown up the lower right corner, just because it seemed odd to me that NASA drops the first few data points below zero and they are obscured by the white tick mark for 1993. <\/p>\n\n\n\n

Remember, Relative Sea Level Rise is the additive product of Vertical Land Movement (VLM, land moving up or down) and any change in the actual height of the sea surface (up or down).    For a tide gauge, the measurements must be taken at the same place on the same structure (pier, dock, wharf):  Sea Surface Height by a modern tide gauge and VLM by a Continuously Operating GPS station attached to the same structure.   NOAA attributes the differences in RSLR rate to differences in the rate of VLM (in most cases, \u201cnegative VLM\u201d or  downward).<\/p>\n\n\n\n

NASA explains East Coast VLM in an article titled: America\u2019s Sinking East Coast<\/a>. <\/p>\n\n\n\n

The press however, urged on by the major Climate Crisis propaganda outfits, gives us stories like these:<\/p>\n\n\n\n

Northeast is likely to experience more than a century\u2019s worth of sea level rise from 2000 to 2050, report finds<\/a><\/strong><\/p>\n\n\n\n

Federal report predicts a foot of sea level rise by 2050, with higher levels in the Northeast<\/a><\/strong><\/p>\n\n\n\n

It is an interesting way to look at the NOAA tide gauge records for the Northeast United States and the rate of relative sea level rise revealed in it.<\/p>\n\n\n\n

# # # # #<\/strong><\/p>\n\n\n\n

Author\u2019s Comment:<\/u><\/strong><\/p>\n\n\n\n

What do you make of that?  I\u2019ll try to get time to do the same for the West Coast, and the Gulf Coast.  If I can find similar data, for Europe and Asia as well.<\/p>\n\n\n\n

NASA has added the absolutely required \u201cacceleration curve\u201d as a thin red line.  That line is entirely subjective, a matter of opinion and some fancy statistical skullduggery \u2013 which involves all the primary sins of time series analysis \u2013 most importantly, using a very short time period, 30 years,  for a phenomenon that operates over centuries. <\/p>\n\n\n\n

The graphs of Rates of RSLR from the tide gauges show that there is a cyclical patter to the rate of rise \u2013 at least in the NE U.S.<\/p>\n\n\n\n

Thanks for reading.<\/p>\n\n\n\n

# # # # #<\/strong><\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

What exactly is this? NOAA says:<\/p>\n

\u201cLinear relative sea level trends were calculated in overlapping 50-year increments for stations with sufficient historical data. The variation of each 50-year trend, with 95% confidence interval, is plotted against the mid-year of each 50-year period. The solid horizontal line represents the linear relative sea level trend using the entire period of record.\u201d<\/p>\n","protected":false},"author":121246920,"featured_media":339377,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_crdt_document":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691818491,691818397,691820093],"class_list":{"0":"post-339364","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-nasa","9":"tag-noaa","10":"tag-sea-level","12":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/08\/0Extreme-Sea-Level-Rise-scaled-1.webp?fit=2560%2C1784&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1qhC","jetpack-related-posts":[{"id":365595,"url":"https:\/\/climatescience.press\/?p=365595","url_meta":{"origin":339364,"position":0},"title":"Year 2024 NOAA Measured Sea level Rise Data Show Climate Alarmists CO2 Driven Sea Level Rise Acceleration Claims Have Spectacularly Failed","author":"uwe.roland.gross","date":"10\/02\/2025","format":false,"excerpt":"NOAA year 2024\u00a0measured U.S. Station Sea Level rise data outcomes establish that alarmists 4 decades\u00a0long\u00a0hyped\u00a0claims of high rates of accelerating sea level rise\u00a0due to increasing man-made CO2 emissions have clearly failed.","rel":"","context":"In \"carbon dioxide (CO\u2082)\"","block_context":{"text":"carbon dioxide (CO\u2082)","link":"https:\/\/climatescience.press\/?tag=carbon-dioxide-co%e2%82%82"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/04a095f5c578b29ce939c054e5e26f8f8.jpg?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/04a095f5c578b29ce939c054e5e26f8f8.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/04a095f5c578b29ce939c054e5e26f8f8.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/04a095f5c578b29ce939c054e5e26f8f8.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/04a095f5c578b29ce939c054e5e26f8f8.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":414935,"url":"https:\/\/climatescience.press\/?p=414935","url_meta":{"origin":339364,"position":1},"title":"NOAA Sea Levels","author":"uwe.roland.gross","date":"27\/11\/2025","format":false,"excerpt":"This study consists of two parts: - Part 1 \u2013 Variation of NOAA Sea Levels globally and for the 24 sub-areas. Part 2 \u2013 Variation of NOAA Sea Level data based on individual satellites. Most of the figures can be found in 2 Google Drive files details of which can\u2026","rel":"","context":"In \"NOAA (National Oceanic and Atmospheric Administration)\"","block_context":{"text":"NOAA (National Oceanic and Atmospheric Administration)","link":"https:\/\/climatescience.press\/?tag=noaa-national-oceanic-and-atmospheric-administration"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/11\/0AQPSLNvp4_kbB7uSwjaeL5Mp9ciqFK6L_mxJuoAmAj6mEIjBpkjfH99Oc60rtOvY5m4dk4hjrgPAa-mT5R7Ed90RnkHvcRkEa6R5iHsSqAnLw5OBVtSeoCktixviBqmc-1.jpeg?fit=1200%2C695&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/11\/0AQPSLNvp4_kbB7uSwjaeL5Mp9ciqFK6L_mxJuoAmAj6mEIjBpkjfH99Oc60rtOvY5m4dk4hjrgPAa-mT5R7Ed90RnkHvcRkEa6R5iHsSqAnLw5OBVtSeoCktixviBqmc-1.jpeg?fit=1200%2C695&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/11\/0AQPSLNvp4_kbB7uSwjaeL5Mp9ciqFK6L_mxJuoAmAj6mEIjBpkjfH99Oc60rtOvY5m4dk4hjrgPAa-mT5R7Ed90RnkHvcRkEa6R5iHsSqAnLw5OBVtSeoCktixviBqmc-1.jpeg?fit=1200%2C695&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/11\/0AQPSLNvp4_kbB7uSwjaeL5Mp9ciqFK6L_mxJuoAmAj6mEIjBpkjfH99Oc60rtOvY5m4dk4hjrgPAa-mT5R7Ed90RnkHvcRkEa6R5iHsSqAnLw5OBVtSeoCktixviBqmc-1.jpeg?fit=1200%2C695&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/11\/0AQPSLNvp4_kbB7uSwjaeL5Mp9ciqFK6L_mxJuoAmAj6mEIjBpkjfH99Oc60rtOvY5m4dk4hjrgPAa-mT5R7Ed90RnkHvcRkEa6R5iHsSqAnLw5OBVtSeoCktixviBqmc-1.jpeg?fit=1200%2C695&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":337287,"url":"https:\/\/climatescience.press\/?p=337287","url_meta":{"origin":339364,"position":2},"title":"Comparing UAH Temperatures , NASA Sea Levels and El Ni\u00f1o\/La Ni\u00f1a Data","author":"uwe.roland.gross","date":"23\/07\/2024","format":false,"excerpt":"LONG ESSAY WARNING:\u00a0 This essay is long and technical, 3300 words.\u00a0 Dr. Welch provides a summary for those less interested in the details of his analysis.","rel":"","context":"In \"El Ni\u00f1o\/La Ni\u00f1a Data\"","block_context":{"text":"El Ni\u00f1o\/La Ni\u00f1a Data","link":"https:\/\/climatescience.press\/?tag=el-nino-la-nina-data"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/07\/0Screenshot-2024-07-23-154853.png?fit=1182%2C612&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/07\/0Screenshot-2024-07-23-154853.png?fit=1182%2C612&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/07\/0Screenshot-2024-07-23-154853.png?fit=1182%2C612&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/07\/0Screenshot-2024-07-23-154853.png?fit=1182%2C612&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/07\/0Screenshot-2024-07-23-154853.png?fit=1182%2C612&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":192450,"url":"https:\/\/climatescience.press\/?p=192450","url_meta":{"origin":339364,"position":3},"title":"AR6 and Sea Level Rise, Part 1","author":"uwe.roland.gross","date":"19\/03\/2022","format":false,"excerpt":"By Andy May This is the first of a three-part series on the IPCC\u2019s discussion of sea level rise in their latest report, AR6 (IPCC, 2021). 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EVERYONE PANIC!","author":"uwe.roland.gross","date":"06\/05\/2024","format":false,"excerpt":"Well, I see that the climate hypemeisters are at it again. Here\u2019s Google News on the subject.","rel":"","context":"In \"Sea level\"","block_context":{"text":"Sea level","link":"https:\/\/climatescience.press\/?tag=sea-level"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/05\/0wp4510225.webp?fit=1200%2C750&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/05\/0wp4510225.webp?fit=1200%2C750&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/05\/0wp4510225.webp?fit=1200%2C750&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/05\/0wp4510225.webp?fit=1200%2C750&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/05\/0wp4510225.webp?fit=1200%2C750&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/339364","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/users\/121246920"}],"replies":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=339364"}],"version-history":[{"count":8,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/339364\/revisions"}],"predecessor-version":[{"id":339379,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/339364\/revisions\/339379"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/media\/339377"}],"wp:attachment":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=339364"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=339364"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=339364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}