NASA Has Quadrupled 1955-1980 Sea Level Rise Since 1982

This is the current NASA tide gauge data, which shows 17 cm of sea level rise from 1870 to 1980, or 1.8 mm/year

ScreenHunter_2145 Jun. 01 08.01

Climate Change: Vital Signs of the Planet: Sea Level

Here is the 1982 version, which shows about half that much rise.

ScreenHunter_2132 May. 31 12.25

The next image overlays the two at the same scale, normalized to 1880, showing how the data has been altered since 1982.


And here is an animation with markers.


This is bad, but it is much worse than it seems. The data tampering has accelerated as time went on. NASA has quadrupled 1955-1980 sea level rise  since their 1982 version.

NASASeaLevel1982vs2015From 1955

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5 Responses to NASA Has Quadrupled 1955-1980 Sea Level Rise Since 1982

  1. Steve Case says:

    I think what your looking at is the results of Dr. John Church and Neil White from one of their papers where they pick and choose what tide gauge stations they use and don’t use.

    Here’s the CSIRO data page
    Here’s the link to Church And White list of tide gauges

    Here’s what I got when I compared an analysis I did using their stations and the one’s they threw out.

  2. SMS says:

    I would think that there would be some acceleration in sea level rise as a result of increased aquifer depletion. This depletion would track (somewhat) the amount of horsepower devoted to borehole pumping which is a function of rural electrification. That graph would exhibit an accelerated rise in sea level starting in the late 30’s for the US and later for more developing countries.

    Until the sea level graph can be broken down into each of the individual components of sea level rise contributing to this increase (aquifer depletion, expansion, melting ice, adjustments, etc.), it’s going to be hard to focus on what the issues with sea level rise really are. In the meantime agencies like NASA like to throw scary graphs at an ill-informed public. It’s more akin to yelling “fire” in a crowded theater.

  3. D Andrew White says:

    Thee jumping graphs do not have matching scales, but just looking at the relative form of the graphs – they are not as different as claimed. A big difference between the 2015 NASA data and the older data are the base lines, i.e. 0.0. These are necessarily different because tidal gauge data are not that great for finding the base line, and satellites use a different system for the base line (more accurate).

    Take the 1982 NASA graph: it has a circa d8 cm = 80 mm difference 1870-1970
    The 2015 NASA graph has a circa d150 mm difference 1870-1970

    In other words, the so-called “fraud” NASA 2015 graph has less robust sea level rise than the 1982 version!

    Some conspiracy, I am underwhelmed.

    • tonyheller says:

      They do have matching scales and your comment is idiotic. If you are too dense to understand the significance of this, you should stay out of the debate.

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