1/11. When someone talks about a sea-level measurement record starting in 1993 it means they're using low quality satellite altimetry data, and they're ignoring the much higher quality coastal measurements. It's political propaganda, not unbiased science. https://sealevel.info/satellite_altimetry.html…

True! There's never been an ice sheet near Oahu, so it's unaffected by Post-Glacial Rebound (PGR), and it experiences almost no vertical land motion (VLM). (Aside: but it moves horizontally [NW] ≈3″/year! https://www.nps.gov/havo/learn/nature/volcanoes.htm#:~:text=As%20it%20moves%20an%20estimated%202-4%20inches%20per%20year,%20it%20carries%20with%20it%20any%20land… ) Peltier's ICE-6G(VM5a) estimate is that Honolulu experiences just 0.10 mm/yr uplift. https://sealevel.info/viewtxt2.php?Peltier/drsl.PSMSL.ICE6G_C_VM5a_O512.txt#:~:text=760031%20HONOLULU&text=HONOLULU%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%2D0.10%20%20%20%20%2D0.09-,%2D0.10,-21.300%20202.133%201481… SONEL's analysis, from GPS data, indicates that Honolulu is subsiding (rather than rising), but at only 0.26 ±0.18 mm/yr: http://www.sonel.org/spip.php?page=gps&idStation=693… Screenshot: https://sealevel.info/Honolulu_HNLC_SONEL_2023-04.png… The CORS plot is flat as a pancake: https://geodesy.noaa.gov/cgi-cors/CorsSidebarSelect.prl?site=hnlc&option=Time%20Series%20(long-term…) Screenshot: https://sealevel.info/hnlc_14.long.png… Those VLM numbers are tiny: +0.10 and -0.26 are opposite sign but close together. In other words, Peltier's model & SONEL's measurements agree that Oahu experiences little vertical land motion. Also, Honolulu's long distance from Greenland also immunizes it from potential distorting effects of Greenland's evolving ice sheet on the Earth's gravity field (the “Greenland Gravity Effect”). https://sealevel.info/resources.html#icegravity… Here's an explanation of the Greenland Gravity Effect: https://www.youtube.com/watch?v=XZqtXf0ieTc… Also, Honolulu gets only fairly modest tides: https://tidesandcurrents.noaa.gov/noaatidepredictions.html?id=1612340… Also, its mid-Pacific location is near the pivot point of the east-west Pacific "teeter-totter," so it's little affected by ENSO "slosh" — that is, El Niño and La Niña don’t alter sea-level there very much. (Aside: Easterly Pacific trade winds diminish during El Niño. Since the trade winds push the water west, diminished trade winds causes the Pacific ocean to "slosh" east. Thus El Niño raises sea-level in the eastern Pacific, e.g., at San Diego, and lowers sea-level in the western Pacific, e.g. at Kwajalein: https://sealevel.info/resources.html#enso… https://sealevel.info/1820000_Kwajalein_San_Diego_2016-04_vs_ENSO_annot4.png… ) Also, of course, if you had to pick one place to sample the "global" sea-level trend, the middle of the world's biggest ocean would be the most obvious choice, and Honolulu is the only high quality, very long, sea-level measurement record from the mid-Pacific. Plus, it has 119⅓ years of continuous measurements, without a single missing month!

1/9. @NASA Climate is not one of the divisions & departments of NASA that do science. It's the "JPL Earth Science Communications Team" in Pasadena, which is comprised of "communicators," not scientists. https://sealevel.info/learnmore.html NASAClimate is a frequent source of misinformation and outright political propaganda.

Sea levels are also rising at an accelerating rate. Right now, global sea level rises about 0.17 inches (0.42 centimeters) per year. For comparison, the 1993 rate was 0.07 inches (0.13 centimeters) per year.