Category Archives: Sea Level

Sea Level Data Tampering

“In a new paper published in Earth Systems and Environment this month, Australian scientists Dr. Albert Parker and Dr. Clifford Ollier uncover evidence that Permanent Service for Mean Sea Level (PSMSL) overseers appear to have been engaging in the “highly questionable” and “suspicious” practice of adjusting historical tide gauge data to show recent accelerated sea level rise where no such acceleration (or rise) exists.” click here

Sea Level Data Tampering

“There is nothing in the sea level record which indicates humans have any influence, but lots of indication that the Sun controls it. However, there is one area of human influence – data tampering by government agencies.” click here

Global Sea Level Acceleration Only 0.002 mm/yr

Albert Parker, Clifford D. Ollier. Short-Term Tide Gauge Records from One Location areInadequate to Infer Global Sea-Level Acceleration. Earth Syst Environ (2017) 1:17  DOI 10.1007/s41748-017-0019-5.

Background: Long records of sea level show decadal and multi-decadal oscillations of synchronous and asynchronous phases, which cannot be detected in short-term records. Without incorporating these oscillations, it is impossible to make useful assessments of present global accelerations and reliable predictions of future changes of sea level. Furthermore, it is well known that local sea-level changes occur also because of local factors such as subsidence due to groundwater or oil extraction, or tectonic movements that may be either up or down.

Purpose: Limited data from limited areas of study are, therefore, unsuitable for making predictions about the whole world sea level. Yet, people continue to make such predictions, often on an alarming scale. Here, we use one example to illustrate the problems associated with trying to make sea-level predictions based on a short record (25 years) in a limited region.

Methods: Linear and parabolic fittings of monthly average mean sea levels (MSL) of global as well as different local (United States Atlantic Coast, United States Pacific Coast) data sets of long tide gauge records.

Results: It is clear from the analyses of the tide gauges of the ‘‘NOAA-120’’, ‘‘US 39’’, ‘‘PSMSL-162’’, ‘‘Mitrovica- 23’’, ‘‘Holgate-9’’, and ‘‘California-8’’ data sets and the United States Pacific and Atlantic coasts that the sea level has been oscillating about the same almost perfectly linear trend line all over the 20th century and the first 17 years of this century.

Conclusion: It is of paramount importance to discuss the proper way to assess the present acceleration of sea levels. This can not be done by focusing on the short-term upward oscillations in selected locations. The information from the tide gauges of the United States does not support any claim of rapidly changing ice mass in Greenland and Antarctica. The data only suggest the sea levels have been oscillating about the same trend line during the last century and this century.

Sea Level Falling Globally



Tide Gauge Data is Not Corrected for Vertical Land Movement

A good review of the tide gauge data accuracy and sea level rise is here at WUWT. The Author’s bottom line:

  • Tide Gauge data is invaluable for localities in determining tide states, sea surface levels relative to the land, and the rate of change of those levels — the only Sea Level data of concern for local governments and populations.
  •  Tide Gauge data is only accurate to ±2 centimeters. All derived averages/means of tide gauge data including daily, weekly, monthly and annual means are also only accurate to ±2 centimeters.  Claims of millimetric accuracy of means are unscientific and insupportable.
  • Tide gauge data is worthless for determining Global Sea Level and/or its change unless it has been explicitly corrected by on-site CORS-like GPS reference station data capable of correcting for vertical land movement.
  •  The current standard for Tide Gauge data, the PSMSL GLOSS, is not corrected for vertical land movement, all studies based on this uncorrected PSMSL data producing Global Sea Level Rise findings of any kind — magnitude or rate-of-change — are based on data not suited for the purpose, are not scientifically sound and do not, cannot, inform us reliably about Global Sea Levels or Global Sea Level Change.

Sea Level Data Manipulated to Show Desired Result

Nils-Axel Mörner. Sea Level Manipulation. International Journal of Engineering Science Invention, Volume 6 Issue 8 August 2017 pages 48-51.

Sea level changes is a key issue in the global warming scenario. It has been widely claimed that sea is rising as a function of the late 20th’s warming pulse. Global tide gauge data sets may vary between +1.7 mm/yr to +0.25 mm/yr depending upon the choice of stations. At numerous individual sites, available tide gauges show variability around a stable zero level. Coastal morphology is a sharp tool in defining ongoing changes in sea level. A general stability has been defined in sites like the Maldives, Goa, Bangladesh and Fiji. In contrast to all those observations, satellite altimetry claim there is a global mean rise in sea level of about 3.0 mm/yr. In this paper, it is claimed that the satellite altimetry values have been “manipulated”. In this situation, it is recommended that we return to the observational facts, which provides global sea level records varying between ±0.0 and +1.0 mm/yr; i.e. values that pose no problems in coastal protection.

Worldwide Ocean Levels Have Fallen for Nearly 2 Years

“…NASA’s own data reveal that worldwide ocean levels have been falling for nearly two years,…” click here