Comment on "A Semi-Empirical Approach to Projecting Future Sea-Level Rise"
Simon Holgate1*,
Svetlana Jevrejeva1,
Philip Woodworth1 and
Simon Brewer2
1 Permanent Service for Mean Sea Level, Proudman Oceanographic Laboratory, 6 Brownlow Street, Liverpool, L3 5DA, UK.
2 Cemagref, CS 40061, 13182 Aix-en-Provence Cedex 5, France.
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Fig. 1. (A) The relationship of the rate of global mean sea-level rise (4) to global mean surface temperature (2, 3) with the data divided into four epochs, each showing a different relationship between the variables. This figure is similar to figure 2 in (1) but without the binning into 5-year averages so as to better illustrate the data clustering. (B) The global mean surface temperature record (2, 3), annual data and data smoothed using the MC-SSA method (6). The four epochs described in (A) relate to the four sections of the temperature record that can be clearly seen.
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Fig. 2. Hindcasts of the global mean sea level based on linear rates calculated from the full data set as in (1) and based on rates calculated from the first and second halves of the reconstructed sea-level record (4). The mean rate of sea-level rise is 0.86 mm/year based on the first half of the record and 1.98 mm/year based on the second half of the record. The mean rate for the 1887 to 1994 period based on the sea-level reconstruction (4) is 1.49 mm/year.
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