Unprecedented threats to cities from multi-century sea level rise
Unprecedented threats to cities from multi-century sea level rise
复制标题
多个世纪以来海平面上升对城市造成前所未有的威胁
DOI:
10.1088/1748-9326/ac2e6b
复制
发表时间:
2021
影响因子:
6.7
通讯作者:
Levermann, Anders
中科院分区:
文献类型:
--
作者:
Strauss, Benjamin H.;Kulp, Scott A.;Rasmussen, D. J.;Levermann, Anders
A portion of human-caused carbon dioxide emissions will stay in the atmosphere for hundreds of years, raising temperatures and sea levels globally. Most nations' emissions-reduction policies and actions do not seem to reflect this long-term threat, as collectively they point toward widespread permanent inundation of many developed areas. Using state-of-the-art new global elevation and population data, we show here that, under high emissions scenarios leading to 4∘ C warming and a median projected 8.9 m of global mean sea level rise within a roughly 200-to 2000-year envelope, at least 50 major cities, mostly in Asia, would need to defend against globally unprecedented levels of exposure, if feasible, or face partial to near-total extant area losses. Nationally, China, India, Indonesia, and Vietnam, global leaders in recent coal plant construction, have the largest contemporary populations occupying land below projected high tide lines, alongside Bangladesh. We employ this population-based metric as a rough index for the potential exposure of the largely immovable built environment embodying cultures and economies as they exist today. Based on median sea level projections, at least one large nation on every continent but Australia and Antarctica would face exceptionally high exposure: land home to at least one-tenth and up to two-thirds of current population falling below tideline. Many small island nations are threatened with near-total loss. The high tide line could encroach above land occupied by as much as 15% of the current global population (about one billion people). By contrast, meeting the most ambitious goals of the Paris Climate Agreement will likely reduce exposure by roughly half and may avoid globally unprecedented defense requirements for any coastal megacity exceeding a contemporary population of 10 million.
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影响因子:
6.7
作者:
B. Marzeion;A. Levermann
通讯作者:
A. Levermann
影响因子:
6.7
作者:
M. Haasnoot;J. C. J. Kwadijk-J.-C.-J.-Kwadijk-2253109353;J. V. Alphen;D. L. Bars;B. Hurk;F. Diermanse;A.J.F. van der Spek;G. O. Essink;J. Delsman;M. Mens
通讯作者:
M. Haasnoot;J. C. J. Kwadijk-J.-C.-J.-Kwadijk-2253109353;J. V. Alphen;D. L. Bars;B. Hurk;F. Diermanse;A.J.F. van der Spek;G. O. Essink;J. Delsman;M. Mens
DOI:
10.1073/pnas.1817205116
发表时间:
2019-06-04
影响因子:
11.1
作者:
Bamber, Jonathan L.;Oppenheimer, Michael;Cooke, Roger M.
通讯作者:
Cooke, Roger M.
影响因子:
30.7
作者:
Favier, L.;Durand, G.;Le Brocq, A. M.
通讯作者:
Le Brocq, A. M.
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
X. Olsthoorn;P. V. D. Werff;L. Bouwer;D. Huitema
通讯作者:
D. Huitema