Enhancing Hydrologic Modelling in the Coupled Weather Research and Forecasting–Urban Modelling System

Jiachuan Yang, Zhihua Wang, Fei Chen, Shiguang Miao, Mukul Tewari, James A. Voogt, Soe Myint

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

Urbanization modifies surface energy and water budgets, and has significant impacts on local and regional hydroclimate. In recent decades, a number of urban canopy models have been developed and implemented into the Weather Research and Forecasting (WRF) model to capture urban land-surface processes. Most of these models are inadequate due to the lack of realistic representation of urban hydrological processes. Here, we implement physically-based parametrizations of urban hydrological processes into the single layer urban canopy model in the WRF model. The new single-layer urban canopy model features the integration of, (1) anthropogenic latent heat, (2) urban irrigation, (3) evaporation from paved surfaces, and (4) the urban oasis effect. The new WRF–urban modelling system is evaluated against field measurements for four different cities; results show that the model performance is substantially improved as compared to the current schemes, especially for latent heat flux. In particular, to evaluate the performance of green roofs as an urban heat island mitigation strategy, we integrate in the urban canopy model a multilayer green roof system, enabled by the physical urban hydrological schemes. Simulations show that green roofs are capable of reducing surface temperature and sensible heat flux as well as enhancing building energy efficiency.

Original languageEnglish (US)
Pages (from-to)87-109
Number of pages23
JournalBoundary-Layer Meteorology
Volume155
Issue number1
DOIs
StatePublished - 2015

Fingerprint

weather
modeling
canopy
roof
heat island
oasis
latent heat flux
sensible heat flux
surface energy
energy budget
energy efficiency
water budget
land surface
urbanization
surface temperature
mitigation
evaporation
irrigation
surface water
simulation

Keywords

  • Green roofs
  • Hydrological modelling
  • Regional hydroclimate
  • Urban canopy model
  • Urban irrigation
  • WRF model

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Enhancing Hydrologic Modelling in the Coupled Weather Research and Forecasting–Urban Modelling System. / Yang, Jiachuan; Wang, Zhihua; Chen, Fei; Miao, Shiguang; Tewari, Mukul; Voogt, James A.; Myint, Soe.

In: Boundary-Layer Meteorology, Vol. 155, No. 1, 2015, p. 87-109.

Research output: Contribution to journalArticle

Yang, Jiachuan ; Wang, Zhihua ; Chen, Fei ; Miao, Shiguang ; Tewari, Mukul ; Voogt, James A. ; Myint, Soe. / Enhancing Hydrologic Modelling in the Coupled Weather Research and Forecasting–Urban Modelling System. In: Boundary-Layer Meteorology. 2015 ; Vol. 155, No. 1. pp. 87-109.
@article{c4326f395f0e4126973441ba56fb1efd,
title = "Enhancing Hydrologic Modelling in the Coupled Weather Research and Forecasting–Urban Modelling System",
abstract = "Urbanization modifies surface energy and water budgets, and has significant impacts on local and regional hydroclimate. In recent decades, a number of urban canopy models have been developed and implemented into the Weather Research and Forecasting (WRF) model to capture urban land-surface processes. Most of these models are inadequate due to the lack of realistic representation of urban hydrological processes. Here, we implement physically-based parametrizations of urban hydrological processes into the single layer urban canopy model in the WRF model. The new single-layer urban canopy model features the integration of, (1) anthropogenic latent heat, (2) urban irrigation, (3) evaporation from paved surfaces, and (4) the urban oasis effect. The new WRF–urban modelling system is evaluated against field measurements for four different cities; results show that the model performance is substantially improved as compared to the current schemes, especially for latent heat flux. In particular, to evaluate the performance of green roofs as an urban heat island mitigation strategy, we integrate in the urban canopy model a multilayer green roof system, enabled by the physical urban hydrological schemes. Simulations show that green roofs are capable of reducing surface temperature and sensible heat flux as well as enhancing building energy efficiency.",
keywords = "Green roofs, Hydrological modelling, Regional hydroclimate, Urban canopy model, Urban irrigation, WRF model",
author = "Jiachuan Yang and Zhihua Wang and Fei Chen and Shiguang Miao and Mukul Tewari and Voogt, {James A.} and Soe Myint",
year = "2015",
doi = "10.1007/s10546-014-9991-6",
language = "English (US)",
volume = "155",
pages = "87--109",
journal = "Boundary-Layer Meteorology",
issn = "0006-8314",
publisher = "Springer Netherlands",
number = "1",

}

TY - JOUR

T1 - Enhancing Hydrologic Modelling in the Coupled Weather Research and Forecasting–Urban Modelling System

AU - Yang, Jiachuan

AU - Wang, Zhihua

AU - Chen, Fei

AU - Miao, Shiguang

AU - Tewari, Mukul

AU - Voogt, James A.

AU - Myint, Soe

PY - 2015

Y1 - 2015

N2 - Urbanization modifies surface energy and water budgets, and has significant impacts on local and regional hydroclimate. In recent decades, a number of urban canopy models have been developed and implemented into the Weather Research and Forecasting (WRF) model to capture urban land-surface processes. Most of these models are inadequate due to the lack of realistic representation of urban hydrological processes. Here, we implement physically-based parametrizations of urban hydrological processes into the single layer urban canopy model in the WRF model. The new single-layer urban canopy model features the integration of, (1) anthropogenic latent heat, (2) urban irrigation, (3) evaporation from paved surfaces, and (4) the urban oasis effect. The new WRF–urban modelling system is evaluated against field measurements for four different cities; results show that the model performance is substantially improved as compared to the current schemes, especially for latent heat flux. In particular, to evaluate the performance of green roofs as an urban heat island mitigation strategy, we integrate in the urban canopy model a multilayer green roof system, enabled by the physical urban hydrological schemes. Simulations show that green roofs are capable of reducing surface temperature and sensible heat flux as well as enhancing building energy efficiency.

AB - Urbanization modifies surface energy and water budgets, and has significant impacts on local and regional hydroclimate. In recent decades, a number of urban canopy models have been developed and implemented into the Weather Research and Forecasting (WRF) model to capture urban land-surface processes. Most of these models are inadequate due to the lack of realistic representation of urban hydrological processes. Here, we implement physically-based parametrizations of urban hydrological processes into the single layer urban canopy model in the WRF model. The new single-layer urban canopy model features the integration of, (1) anthropogenic latent heat, (2) urban irrigation, (3) evaporation from paved surfaces, and (4) the urban oasis effect. The new WRF–urban modelling system is evaluated against field measurements for four different cities; results show that the model performance is substantially improved as compared to the current schemes, especially for latent heat flux. In particular, to evaluate the performance of green roofs as an urban heat island mitigation strategy, we integrate in the urban canopy model a multilayer green roof system, enabled by the physical urban hydrological schemes. Simulations show that green roofs are capable of reducing surface temperature and sensible heat flux as well as enhancing building energy efficiency.

KW - Green roofs

KW - Hydrological modelling

KW - Regional hydroclimate

KW - Urban canopy model

KW - Urban irrigation

KW - WRF model

UR - http://www.scopus.com/inward/record.url?scp=84925481434&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84925481434&partnerID=8YFLogxK

U2 - 10.1007/s10546-014-9991-6

DO - 10.1007/s10546-014-9991-6

M3 - Article

AN - SCOPUS:84925481434

VL - 155

SP - 87

EP - 109

JO - Boundary-Layer Meteorology

JF - Boundary-Layer Meteorology

SN - 0006-8314

IS - 1

ER -