Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 42, Issue 10, Pages 4102-4109Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1002/2015GL064177
Keywords
GMSL; sea level reconstruction; tide gauge
Categories
Funding
- NASA Ocean Surface Topography Mission Science Team [NNX13AH05G]
- NASA ROSES [NNX11AE26G]
- NASA Sea Level Change Team [NNX14AJ98G]
- Office of Climate Observations, NOAA [NA09OAR4320075]
- NASA [679186, NNX14AJ98G, 148137, NNX11AE26G] Funding Source: Federal RePORTER
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Recent efforts in reconstructing historical sea level change have led to a range of published estimates for the global mean sea level trend over the last century. Disagreement in these estimates can be attributed to two factors: (1) differences in analysis and/or reconstruction techniques and (2) differences in tide gauge selection and quality control of the data. Here the impact of tide gauge selection is explored by calculating global mean trends using three different tide gauge data sets that have been utilized in recent reconstruction studies. The inclusion of tide gauge records that are affected by unresolved internal variability and/or unaccounted for vertical land motion are found to significantly impact the estimates of the long-term trend in global mean sea level. In conclusion, several guidelines are presented regarding the selection of tide gauges for use in historical reconstructions focused on estimating the 20th century global mean sea level trend.
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