Remember when the islands of Tuvalu were going to be inundated by sea level rise? Never mind…

Image: The Islands of Tuvalu: 5 Interesting Facts You Probably Didn’t know

Surprise! Poster child for sea level rise, Tuvalu, is actually growing!

From the “we told you so,  again, and again” department. We’ve had several articles about the island of Tuvalu and the ridiculous claims of sea level rise causing it to disappear, while at the same time they are building new hotels and airports to attract tourists. Willis has also had several articles on how Pacific atolls grow, and float, rather than sink as sea level advances.

Now, a study confirms what we’ve already known – atolls, and in particular Tuvalu is growing, and increasing land area. So much for climate alarmism. From Nature communications:


Patterns of island change and persistence offer alternate adaptation pathways for atoll nations

Paul S. Kench, Murray R. Ford & Susan D. Owen

Abstract

Sea-level rise and climatic change threaten the existence of atoll nations. Inundation and erosion are expected to render islands uninhabitable over the next century, forcing human migration. Here we present analysis of shoreline change in all 101 islands in the Pacific atoll nation of Tuvalu. Using remotely sensed data, change is analysed over the past four decades, a period when local sea level has risen at twice the global average (~3.90 ± 0.4 mm.yr−1). Results highlight a net increase in land area in Tuvalu of 73.5 ha (2.9%), despite sea-level rise, and land area increase in eight of nine atolls.Island change has lacked uniformity with 74% increasing and 27% decreasing in size. Results challenge perceptions of island loss, showing islands are dynamic features that will persist as sites for habitation over the next century, presenting alternate opportunities for adaptation that embrace the heterogeneity of island types and their dynamics.

From the discussion section:

Here we present the first comprehensive national-scale analysis of the transformation in physical land resources of the Pacific atoll nation Tuvalu, situated in the central western Pacific (Supplementary Note 1). Comprising 9 atolls and 101 individual reef islands, the nation is home to 10,600 people, 50% of whom are located on the urban island of Fogafale, in Funafuti atoll28. We specifically examine spatial differences in island behaviour, of all 101 islands in Tuvalu, over the past four decades (1971–2014), a period in which local sea level has risen at twice the global average (Supplementary Note 2).Surprisingly, we show that all islands have changed and that the dominant mode of change has been island expansion, which has increased the land area of the nation.Results are used to project future landform availability and consider opportunities for a vastly more nuanced and creative set of adaptation pathways for atoll nations.

Figure 3: Examples of island change and dynamics in Tuvalu from 1971 to 2014. a Nanumaga reef platform island (301 ha) increased in area 4.7 ha (1.6%) and remained stable on its reef platform. b Fangaia island (22.4 ha), Nukulaelae atoll, increased in area 3.1 ha (13.7%) and remained stable on reef rim. c Fenualango island (14.1 ha), Nukulaelae atoll rim, increased in area 2.3 ha (16%). Note smaller island on left Teafuafatu (0.29 ha), which reduced in area 0.15 ha (49%) and had significant lagoonward movement. d Two smaller reef islands on Nukulaelae reef rim. Tapuaelani island, (0.19 ha) top left, increased in area 0.21 ha (113%) and migrated lagoonward. Kalilaia island, (0.52 ha) bottom right, reduced in area 0.45 ha (85%) migrating substantially lagoonward. e Teafuone island (1.37 ha) Nukufetau atoll, increased in area 0.04 ha (3%). Note lateral migration of island along reef platform. Yellow lines represent the 1971 shoreline, blue lines represent the 1984 shoreline, green lines represent the 2006 shoreline and red lines represent the 2014 shoreline. Images ©2017 DigitalGlobe Inc
Full paper here, open access: https://www.nature.com/articles/s41467-018-02954-1

How inconvenient for climate alarmists. Now what will they do for claiming sea level rise will inundate Pacific islands?

h/t to WUWT reader Clyde Spencer

Ref.: https://wattsupwiththat.com/2018/02/09/remember-when-the-island-of-tuvalu-was-going-to-be-inundated-by-sea-level-rise-never-mind/

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