| DOI: | 10.1175/JCLI-D-14-00290.1
|
| Scopus记录号: | 2-s2.0-84944145018
|
| 论文题名: | Challenges associated with adaptation to future urban expansion |
| 作者: | Georgescu M.
|
| 刊名: | Journal of Climate
|
| ISSN: | 8948755
|
| 出版年: | 2015
|
| 卷: | 28, 期:7 | | 起始页码: | 2544
|
| 结束页码: | 2563
|
| 语种: | 英语
|
| Scopus关键词: | Air quality
; Atmospheric temperature
; Atmospheric thermodynamics
; Boundary layer flow
; Boundary layers
; Climate change
; Expansion
; Kinetic energy
; Kinetics
; Atmosphere-land interactions
; Heat island
; Land surface
; Mesoscale process
; Regional effects
; Roofs
; atmosphere-biosphere interaction
; boundary layer
; climate change
; climate effect
; heat island
; kinetic energy
; land surface
; mesoscale motion
; mixed layer
; regional climate
; urban climate
; warming
; California
; United States
|
| 英文摘要: | The most populated state in the United States, California, is projected to add millions of new inhabitants through the end of the current century, requiring considerable landscape conversion to the built environment. A suite of continuous multiyear, medium-range resolution (20-km grid spacing), ensemble-based simulations is examined to assess urban expansion climate effects on California in 2100, and potential strategies to alleviate them. Summertime [June-August (JJA)] warming due to urban expansion of 1°-2°C is greater relative to any other season, and is completely offset by a range of adaptation strategies: green roofs (highly transpiring), cool roofs (highly reflective), and hybrid roofs (with combined biophysical properties of green and cool roofs). After offsetting of urban-induced warming, cool and hybrid roofs lead to a further 1°-2°C reduction in JJA 2-m temperature, highlighting enhanced efficacy of these adaptation strategies. Guided by medium-range-resolution results, additional high-resolution (2-km grid spacing) experiments are conducted for a subset of the JJA periods conducted on a coarser scale. Urban-induced 1°-2°C warming (local maximum warming exceeds 4°C) is simulated, and is offset by cool and green roof deployment. In agreement with coarser-resolution results, maximum near-surface cooling is greater for cool roofs relative to green roofs. Reduced daytime warming associated with both cool and green roofs also modifies the convective mixed layer, reducing turbulent kinetic energy and planetary boundary layer height, although this impact is less for green roofs than for cool roofs. The results presented here demonstrate the importance of future urban expansion in California and illustrate climatic consequences with implications for regional air quality. © 2015 American Meteorological Society. |
| 资助项目: | NSF, Norsk Sykepleierforbund
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/50676
|
| Appears in Collections: | 气候变化事实与影响
|
|
There are no files associated with this item.
|
|
作者单位: | School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, AZ, United States
|
| Recommended Citation: | |
Georgescu M.. Challenges associated with adaptation to future urban expansion[J]. Journal of Climate,2015-01-01,28(7)
|
|
|