Abstract

Large impacts of global warming and urbanization on near-surface air temperature increase and cooling energy demand are expected for the American Southwest region. The relative importance of these two features and their interactions are studied by means of a mesoscale model with a multilayer building energy model that allows accounting for the feedback between cooling energy consumption and air temperature for a typical summer period in Arizona. This approach allows to separate the impact of global warming from the one due to urbanization, on energy demand and air temperature. Under the highest greenhouse gas emissions scenario (RCP8.5), adverse effects on mean air temperature of global warming overwhelm those from the urbanization of new areas. In particular, the mean temperature increase for a summer period due to global warming and urban expansion in the Phoenix metropolitan area is 3.6 °C and in the Tucson metropolitan area, it is 3.1 °C. These result in an increase in the spatial density of the cooling energy demand (MW km−2) by 36.2 and 42.6% in the respective regions compared to present consumption. The citywide cooling energy demand (MW) on the other hand, is expected to increase up to a factor two (Phoenix) and three (Tucson), with ∼75% of this increase due to urban expansion, and ∼25% due to global warming.

Original languageEnglish (US)
Pages (from-to)419-426
Number of pages8
JournalAtmospheric Science Letters
Volume18
Issue number11
DOIs
StatePublished - Nov 1 2017

Fingerprint

semiarid region
global warming
cooling
air temperature
urbanization
metropolitan area
summer
greenhouse gas
surface temperature
energy demand
energy
temperature

Keywords

  • global warming
  • mesoscale
  • urbanization

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Impacts of projected urban expansion and global warming on cooling energy demand over a semiarid region. / Tewari, Mukul; Salamanca Palou, Francisco; Martilli, Alberto; Treinish, Lloyd; Mahalov, Alex.

In: Atmospheric Science Letters, Vol. 18, No. 11, 01.11.2017, p. 419-426.

Research output: Contribution to journalArticle

@article{bb4140a824d8465185eca32a32c5617c,
title = "Impacts of projected urban expansion and global warming on cooling energy demand over a semiarid region",
abstract = "Large impacts of global warming and urbanization on near-surface air temperature increase and cooling energy demand are expected for the American Southwest region. The relative importance of these two features and their interactions are studied by means of a mesoscale model with a multilayer building energy model that allows accounting for the feedback between cooling energy consumption and air temperature for a typical summer period in Arizona. This approach allows to separate the impact of global warming from the one due to urbanization, on energy demand and air temperature. Under the highest greenhouse gas emissions scenario (RCP8.5), adverse effects on mean air temperature of global warming overwhelm those from the urbanization of new areas. In particular, the mean temperature increase for a summer period due to global warming and urban expansion in the Phoenix metropolitan area is 3.6 °C and in the Tucson metropolitan area, it is 3.1 °C. These result in an increase in the spatial density of the cooling energy demand (MW km−2) by 36.2 and 42.6{\%} in the respective regions compared to present consumption. The citywide cooling energy demand (MW) on the other hand, is expected to increase up to a factor two (Phoenix) and three (Tucson), with ∼75{\%} of this increase due to urban expansion, and ∼25{\%} due to global warming.",
keywords = "global warming, mesoscale, urbanization",
author = "Mukul Tewari and {Salamanca Palou}, Francisco and Alberto Martilli and Lloyd Treinish and Alex Mahalov",
year = "2017",
month = "11",
day = "1",
doi = "10.1002/asl.784",
language = "English (US)",
volume = "18",
pages = "419--426",
journal = "Atmospheric Science Letters",
issn = "1530-261X",
publisher = "John Wiley and Sons Inc.",
number = "11",

}

TY - JOUR

T1 - Impacts of projected urban expansion and global warming on cooling energy demand over a semiarid region

AU - Tewari, Mukul

AU - Salamanca Palou, Francisco

AU - Martilli, Alberto

AU - Treinish, Lloyd

AU - Mahalov, Alex

PY - 2017/11/1

Y1 - 2017/11/1

N2 - Large impacts of global warming and urbanization on near-surface air temperature increase and cooling energy demand are expected for the American Southwest region. The relative importance of these two features and their interactions are studied by means of a mesoscale model with a multilayer building energy model that allows accounting for the feedback between cooling energy consumption and air temperature for a typical summer period in Arizona. This approach allows to separate the impact of global warming from the one due to urbanization, on energy demand and air temperature. Under the highest greenhouse gas emissions scenario (RCP8.5), adverse effects on mean air temperature of global warming overwhelm those from the urbanization of new areas. In particular, the mean temperature increase for a summer period due to global warming and urban expansion in the Phoenix metropolitan area is 3.6 °C and in the Tucson metropolitan area, it is 3.1 °C. These result in an increase in the spatial density of the cooling energy demand (MW km−2) by 36.2 and 42.6% in the respective regions compared to present consumption. The citywide cooling energy demand (MW) on the other hand, is expected to increase up to a factor two (Phoenix) and three (Tucson), with ∼75% of this increase due to urban expansion, and ∼25% due to global warming.

AB - Large impacts of global warming and urbanization on near-surface air temperature increase and cooling energy demand are expected for the American Southwest region. The relative importance of these two features and their interactions are studied by means of a mesoscale model with a multilayer building energy model that allows accounting for the feedback between cooling energy consumption and air temperature for a typical summer period in Arizona. This approach allows to separate the impact of global warming from the one due to urbanization, on energy demand and air temperature. Under the highest greenhouse gas emissions scenario (RCP8.5), adverse effects on mean air temperature of global warming overwhelm those from the urbanization of new areas. In particular, the mean temperature increase for a summer period due to global warming and urban expansion in the Phoenix metropolitan area is 3.6 °C and in the Tucson metropolitan area, it is 3.1 °C. These result in an increase in the spatial density of the cooling energy demand (MW km−2) by 36.2 and 42.6% in the respective regions compared to present consumption. The citywide cooling energy demand (MW) on the other hand, is expected to increase up to a factor two (Phoenix) and three (Tucson), with ∼75% of this increase due to urban expansion, and ∼25% due to global warming.

KW - global warming

KW - mesoscale

KW - urbanization

UR - http://www.scopus.com/inward/record.url?scp=85033782319&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85033782319&partnerID=8YFLogxK

U2 - 10.1002/asl.784

DO - 10.1002/asl.784

M3 - Article

VL - 18

SP - 419

EP - 426

JO - Atmospheric Science Letters

JF - Atmospheric Science Letters

SN - 1530-261X

IS - 11

ER -