The Impact of Façade Orientation and Woody Vegetation on Summertime Heat Stress Patterns in a Central European Square: Comparison of Radiation Measurements and Simulations

Noémi Kántor, Csilla Viktória Gál, Ágnes Gulyás, J. Unger

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Increasing summertime air temperature deteriorates human health especially in cities where the warming tendency is exacerbated by urban heat island. Human-biometeorological studies shed light on the primary role of radiation conditions in the development of summertime heat stress. However, only a limited number of field investigations have been conducted up to now. Based on a 26-hour long complex radiation measurement, this study presents the evolved differences within a medium-sized rectangular square in Szeged, Hungary. Besides assessing the impact of woody vegetation and façade orientation on the radiation heat load, different modeling software programs (ENVI-met, SOLWEIG, and RayMan) are evaluated in reproducing mean radiant temperature (Tmrt). Although daytime Tmrt can reach an extreme level at exposed locations (65-75°C), mature shade trees can reduce it to 30-35°C. Nevertheless, shading from buildings adjacent to sidewalks plays also an important role in mitigating pedestrian heat stress. Sidewalks facing SE, S, and SW do not benefit from the shading effect of buildings; therefore, shading them by trees or artificial shading devices is of high importance. The measurement-model comparison revealed smaller or larger discrepancies that raise awareness of the careful adaptation of any modeling software and of the relevance of fine-resolution field measurements.

Original languageEnglish
Article number2650642
JournalAdvances in Meteorology
Volume2018
DOIs
Publication statusPublished - Jan 1 2018

Fingerprint

radiation measurement
shading
vegetation
Radiation
heat
heat islands
simulation
computer programs
shades
Hungary
daytime
radiation
Thermal load
software
Temperature
health
temperature
heat island
pedestrian
tendencies

ASJC Scopus subject areas

  • Geophysics
  • Pollution
  • Atmospheric Science

Cite this

The Impact of Façade Orientation and Woody Vegetation on Summertime Heat Stress Patterns in a Central European Square : Comparison of Radiation Measurements and Simulations. / Kántor, Noémi; Gál, Csilla Viktória; Gulyás, Ágnes; Unger, J.

In: Advances in Meteorology, Vol. 2018, 2650642, 01.01.2018.

Research output: Contribution to journalArticle

@article{1faf5906eb3d4c39aa76db7e4b04f5e7,
title = "The Impact of Fa{\cc}ade Orientation and Woody Vegetation on Summertime Heat Stress Patterns in a Central European Square: Comparison of Radiation Measurements and Simulations",
abstract = "Increasing summertime air temperature deteriorates human health especially in cities where the warming tendency is exacerbated by urban heat island. Human-biometeorological studies shed light on the primary role of radiation conditions in the development of summertime heat stress. However, only a limited number of field investigations have been conducted up to now. Based on a 26-hour long complex radiation measurement, this study presents the evolved differences within a medium-sized rectangular square in Szeged, Hungary. Besides assessing the impact of woody vegetation and fa{\cc}ade orientation on the radiation heat load, different modeling software programs (ENVI-met, SOLWEIG, and RayMan) are evaluated in reproducing mean radiant temperature (Tmrt). Although daytime Tmrt can reach an extreme level at exposed locations (65-75°C), mature shade trees can reduce it to 30-35°C. Nevertheless, shading from buildings adjacent to sidewalks plays also an important role in mitigating pedestrian heat stress. Sidewalks facing SE, S, and SW do not benefit from the shading effect of buildings; therefore, shading them by trees or artificial shading devices is of high importance. The measurement-model comparison revealed smaller or larger discrepancies that raise awareness of the careful adaptation of any modeling software and of the relevance of fine-resolution field measurements.",
author = "No{\'e}mi K{\'a}ntor and G{\'a}l, {Csilla Vikt{\'o}ria} and {\'A}gnes Guly{\'a}s and J. Unger",
year = "2018",
month = "1",
day = "1",
doi = "10.1155/2018/2650642",
language = "English",
volume = "2018",
journal = "Advances in Meteorology",
issn = "1687-9309",
publisher = "Hindawi Publishing Corporation",

}

TY - JOUR

T1 - The Impact of Façade Orientation and Woody Vegetation on Summertime Heat Stress Patterns in a Central European Square

T2 - Comparison of Radiation Measurements and Simulations

AU - Kántor, Noémi

AU - Gál, Csilla Viktória

AU - Gulyás, Ágnes

AU - Unger, J.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Increasing summertime air temperature deteriorates human health especially in cities where the warming tendency is exacerbated by urban heat island. Human-biometeorological studies shed light on the primary role of radiation conditions in the development of summertime heat stress. However, only a limited number of field investigations have been conducted up to now. Based on a 26-hour long complex radiation measurement, this study presents the evolved differences within a medium-sized rectangular square in Szeged, Hungary. Besides assessing the impact of woody vegetation and façade orientation on the radiation heat load, different modeling software programs (ENVI-met, SOLWEIG, and RayMan) are evaluated in reproducing mean radiant temperature (Tmrt). Although daytime Tmrt can reach an extreme level at exposed locations (65-75°C), mature shade trees can reduce it to 30-35°C. Nevertheless, shading from buildings adjacent to sidewalks plays also an important role in mitigating pedestrian heat stress. Sidewalks facing SE, S, and SW do not benefit from the shading effect of buildings; therefore, shading them by trees or artificial shading devices is of high importance. The measurement-model comparison revealed smaller or larger discrepancies that raise awareness of the careful adaptation of any modeling software and of the relevance of fine-resolution field measurements.

AB - Increasing summertime air temperature deteriorates human health especially in cities where the warming tendency is exacerbated by urban heat island. Human-biometeorological studies shed light on the primary role of radiation conditions in the development of summertime heat stress. However, only a limited number of field investigations have been conducted up to now. Based on a 26-hour long complex radiation measurement, this study presents the evolved differences within a medium-sized rectangular square in Szeged, Hungary. Besides assessing the impact of woody vegetation and façade orientation on the radiation heat load, different modeling software programs (ENVI-met, SOLWEIG, and RayMan) are evaluated in reproducing mean radiant temperature (Tmrt). Although daytime Tmrt can reach an extreme level at exposed locations (65-75°C), mature shade trees can reduce it to 30-35°C. Nevertheless, shading from buildings adjacent to sidewalks plays also an important role in mitigating pedestrian heat stress. Sidewalks facing SE, S, and SW do not benefit from the shading effect of buildings; therefore, shading them by trees or artificial shading devices is of high importance. The measurement-model comparison revealed smaller or larger discrepancies that raise awareness of the careful adaptation of any modeling software and of the relevance of fine-resolution field measurements.

UR - http://www.scopus.com/inward/record.url?scp=85045954041&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85045954041&partnerID=8YFLogxK

U2 - 10.1155/2018/2650642

DO - 10.1155/2018/2650642

M3 - Article

AN - SCOPUS:85045954041

VL - 2018

JO - Advances in Meteorology

JF - Advances in Meteorology

SN - 1687-9309

M1 - 2650642

ER -