Urban adaptation can roll back warming of emerging megapolitan regions.
Proc Natl Acad Sci U S A
; 111(8): 2909-14, 2014 Feb 25.
Article
em En
| MEDLINE
| ID: mdl-24516126
ABSTRACT
Modeling results incorporating several distinct urban expansion futures for the United States in 2100 show that, in the absence of any adaptive urban design, megapolitan expansion, alone and separate from greenhouse gas-induced forcing, can be expected to raise near-surface temperatures 1-2 °C not just at the scale of individual cities but over large regional swaths of the country. This warming is a significant fraction of the 21st century greenhouse gas-induced climate change simulated by global climate models. Using a suite of regional climate simulations, we assessed the efficacy of commonly proposed urban adaptation strategies, such as green, cool roof, and hybrid approaches, to ameliorate the warming. Our results quantify how judicious choices in urban planning and design cannot only counteract the climatological impacts of the urban expansion itself but also, can, in fact, even offset a significant percentage of future greenhouse warming over large scales. Our results also reveal tradeoffs among different adaptation options for some regions, showing the need for geographically appropriate strategies rather than one size fits all solutions.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Urbanização
/
Mudança Climática
/
Cidades
/
Meio Ambiente
/
Modelos Teóricos
Tipo de estudo:
Prognostic_studies
País como assunto:
America do norte
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article