Earth’s Future
Supporting Information for
Global Secular Changes in different Tidal High Water, Low Water and Range levels
Robert J. Mawdsley, Ivan D. Haigh & Neil C. Wells
University of Southampton
Contents of this file
Figures S1.1 to S1.5: Significance of trends at each site for all tidal levels
Figures S2.1 to S2.5: Magnitude of trends at each site for all tidal levels
Figures S3.1 to S3.5: Percentage magnitude of trends at each site for all tidal levels
Figures S4.1 to 4.11: Tidal range trends and contribution from associated high waters
and low water trends for each site
Table S1: Summary of the location and length of files used in the analysis
Tables S2.1 to S2.3: Magnitude of trends with 95% confidence limits for all tidal
range, high water and low water levels for each site
Introduction
The tables and figures presented in this supplementary material section are included to aid
the reading of the associated paper. Tables present the necessary supporting data, while the
figures ensure that all tidal levels and all sites are plotted for each of the four figures in this
supplementary section.
1
Figure S1.1: Global map showing where trends in MHHW (a), MLLW (b) and GDTR (c) are: significant
positive (red), significant negative (blue) or non-significant (black). Significance means trend is significantly
different to zero.
2
Figure S1.2: Global map showing where trends in MHW (a), MLW (b) and MTR (c) are: significant positive
(red), significant negative (blue) or non-significant (black). Significance means trend is significantly different to
zero.
3
Figure S1.3: Global map showing where trends in MLHW (a), MHLW (b) and LDTR (c) are: significant
positive (red), significant negative (blue) or non-significant (black). Significance means trend is significantly
different to zero.
4
Figure S1.4: Global map showing where trends in MHWST (a), MLWST (b) and STTR (c) are: significant
positive (red), significant negative (blue) or non-significant (black). Significance means trend is significantly
different to zero.
5
Figure S1.5: Global map showing where trends in MHWNE (a), MLWNE (b) and NETR (c) are: significant
positive (red), significant negative (blue) or non-significant (black). Significance means trend is significantly
different to zero.
6
Figure S2.1: Global map showing magnitude of trends in mm/yr for MHHW (a), MLLW (b) and GDTR (c)
for all locations.
7
Figure S2.2: Global map showing magnitude of trends in mm/yr for MHW (a), MLW (b) and MTR (c) for
all locations.
8
Figure S2.3: Global map showing magnitude of trends in mm/yr for MLHW (a), MHLW (b) and LDTR (c)
for all locations.
9
Figure S2.4: Global map showing magnitude of trends in mm/yr for MHWST (a), MLWST (b) and STTR
(c) for all locations.
10
Figure S2.5: Global map showing magnitude of trends in mm/yr for MHWNE (a), MLWNE (b) and NETR
(c) for all locations.
11
Figure S3.1: Global map showing percentage changes in %/yr for MHHW (a), MLLW (b) and GDTR (c) for
all locations.
12
Figure S3.2: Global map showing percentage changes in %/yr for MHW (a), MLW (b) and MTR (c) for all
locations.
13
Figure S3.3: Global map showing percentage changes in %/yr for MLHW (a), MHLW (b) and LDTR (c) for
all locations.
14
Figure S3.4: Global map showing percentage changes in %/yr for MHWST (a), MLWST (b) and STTR (c)
for all locations.
15
Figure S3.5: Global map showing percentage changes in %/yr for MHWNE (a), MLWNE (b) and NETR (c)
for all locations.
16
Figure S4.1: Plots showing the magnitude of linear trends in tidal levels at all sites. The trend in tidal range (large green dots) is plotted with 95% confidence limits
(small green dots) for five tidal range (see Table 1). Stacked bar charts show the contribution towards the tidal range trend of changes in the respective HW subsets (red) and
LW subsets (blue).
17
Figure S4.2: Plots showing the magnitude of linear trends in tidal levels at all sites. The trend in tidal range (large green dots) is plotted with 95% confidence limits
(small green dots) for five tidal range (see Table 1). Stacked bar charts show the contribution towards the tidal range trend of changes in the respective HW subsets (red) and
LW subsets (blue).
18
Figure S4.3: Plots showing the magnitude of linear trends in tidal levels at all sites. The trend in tidal range (large green dots) is plotted with 95% confidence limits
(small green dots) for five tidal range (see Table 1). Stacked bar charts show the contribution towards the tidal range trend of changes in the respective HW subsets (red) and
LW subsets (blue).
19
Figure S4.4: Plots showing the magnitude of linear trends in tidal levels at all sites. The trend in tidal range (large green dots) is plotted with 95% confidence limits
(small green dots) for five tidal range (see Table 1). Stacked bar charts show the contribution towards the tidal range trend of changes in the respective HW subsets (red) and
LW subsets (blue).
20
Figure S4.5: Plots showing the magnitude of linear trends in tidal levels at all sites. The trend in tidal range (large green dots) is plotted with 95% confidence limits
(small green dots) for five tidal range (see Table 1). Stacked bar charts show the contribution towards the tidal range trend of changes in the respective HW subsets (red) and
LW subsets (blue).
21
Figure S4.6: Plots showing the magnitude of linear trends in tidal levels at all sites. The trend in tidal range (large green dots) is plotted with 95% confidence limits
(small green dots) for five tidal range (see Table 1). Stacked bar charts show the contribution towards the tidal range trend of changes in the respective HW subsets (red) and
LW subsets (blue).
22
Figure S4.7: Plots showing the magnitude of linear trends in tidal levels at all sites. The trend in tidal range (large green dots) is plotted with 95% confidence limits
(small green dots) for five tidal range (see Table 1). Stacked bar charts show the contribution towards the tidal range trend of changes in the respective HW subsets (red) and
LW subsets (blue).
23
Figure S4.8: Plots showing the magnitude of linear trends in tidal levels at all sites. The trend in tidal range (large green dots) is plotted with 95% confidence limits
(small green dots) for five tidal range (see Table 1). Stacked bar charts show the contribution towards the tidal range trend of changes in the respective HW subsets (red) and
LW subsets (blue).
24
Figure S4.9: Plots showing the magnitude of linear trends in tidal levels at all sites. The trend in tidal range (large green dots) is plotted with 95% confidence limits
(small green dots) for five tidal range (see Table 1). Stacked bar charts show the contribution towards the tidal range trend of changes in the respective HW subsets (red) and
LW subsets (blue).
25
Figure S4.10: Plots showing the magnitude of linear trends in tidal levels at all sites. The trend in tidal range (large green dots) is plotted with 95% confidence limits
(small green dots) for five tidal range (see Table 1). Stacked bar charts show the contribution towards the tidal range trend of changes in the respective HW subsets (red) and
LW subsets (blue).
26
Figure S4.11: Plots showing the magnitude of linear trends in tidal levels at all sites. The trend in tidal range (large green dots) is plotted with 95% confidence limits
(small green dots) for five tidal range (see Table 1). Stacked bar charts show the contribution towards the tidal range trend of changes in the respective HW subsets (red) and
LW subsets (blue).
27
Table S1: Summary metadata of every selected site.
1
Table S2.1: Values of trends in each tidal range, with 95% confidence limits.
2
Table S2.2: Values of trends in each high water level, with 95% confidence limits.
3
Table S2.3: Values of trends in each low water level, with 95% confidence limits.
4