Details
| Original language | English |
|---|---|
| Article number | 6861 |
| Number of pages | 31 |
| Journal | Sustainability |
| Volume | 14 |
| Issue number | 11 |
| Publication status | Published - 4 Jun 2022 |
Abstract
Nowadays, most cities deal with the problem of “Urban Heat Islands”. Especially existing city districts cannot easily be adapted. In this paper, the effects of blue-green infrastructure elements (BGI) on air and surface temperature in courtyards are examined, based on on-site measurements and simulations. Recognizable effects on the temperature were observed: BGI lower the number of hot days in the courtyard, including a faster air temperature drop at night, but water elements increase the number of tropical nights due to their heat capacity. Model simulations with PALM-4U proved to be useful to analyze the effects of BGI on the microclimate. Besides analyzing existing structures, the effects of planned measures can be quantified by simulation. However, for this application, needs of improvement were recognized to evaluate the influence of BGI on the microclimate more realistically. For decision support, standard indicators such as the number of tropical nights and hot days are not differentiated enough to quantify specific climate stress of urban residents. It is suggested to consider summer days additionally, percentiles could be used instead of fixed thresholds and the entire course of the year should play a role in the evaluation of the elements and urban design.
Keywords
- decision support, inner courtyards, PALM, thermal stress, urban microclimate
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Science (miscellaneous)
- Social Sciences(all)
- Geography, Planning and Development
- Energy(all)
- Energy Engineering and Power Technology
- Environmental Science(all)
- Management, Monitoring, Policy and Law
- Energy(all)
- Renewable Energy, Sustainability and the Environment
Sustainable Development Goals
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In: Sustainability, Vol. 14, No. 11, 6861, 04.06.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Climate Impact and Model Approaches of Blue-Green Infrastructure Measures for Neighborhood Planning
AU - Beier, Maike
AU - Gerstendörfer, Jessica
AU - Mendzigall, Katja
AU - Pavlik, Dirk
AU - Trute, Peter
AU - von Tils, Robert
N1 - Funding Information: Acknowledgments: The publication of this article was funded by the Open Access Publishing Fund of Leibniz Universität Hannover. Funding Information: Funding: This research was funded by the Federal Ministry of Education and Research (BMBF) within the RES:Z call: Resource-optimized city of the future; research project TransMiT—Resource-optimized transformation of combined and separate drainage systems in existing quarters with high population pressure, Subproject Effect of BGI on local climate / backyards, grant number 033W105A UP5.
PY - 2022/6/4
Y1 - 2022/6/4
N2 - Nowadays, most cities deal with the problem of “Urban Heat Islands”. Especially existing city districts cannot easily be adapted. In this paper, the effects of blue-green infrastructure elements (BGI) on air and surface temperature in courtyards are examined, based on on-site measurements and simulations. Recognizable effects on the temperature were observed: BGI lower the number of hot days in the courtyard, including a faster air temperature drop at night, but water elements increase the number of tropical nights due to their heat capacity. Model simulations with PALM-4U proved to be useful to analyze the effects of BGI on the microclimate. Besides analyzing existing structures, the effects of planned measures can be quantified by simulation. However, for this application, needs of improvement were recognized to evaluate the influence of BGI on the microclimate more realistically. For decision support, standard indicators such as the number of tropical nights and hot days are not differentiated enough to quantify specific climate stress of urban residents. It is suggested to consider summer days additionally, percentiles could be used instead of fixed thresholds and the entire course of the year should play a role in the evaluation of the elements and urban design.
AB - Nowadays, most cities deal with the problem of “Urban Heat Islands”. Especially existing city districts cannot easily be adapted. In this paper, the effects of blue-green infrastructure elements (BGI) on air and surface temperature in courtyards are examined, based on on-site measurements and simulations. Recognizable effects on the temperature were observed: BGI lower the number of hot days in the courtyard, including a faster air temperature drop at night, but water elements increase the number of tropical nights due to their heat capacity. Model simulations with PALM-4U proved to be useful to analyze the effects of BGI on the microclimate. Besides analyzing existing structures, the effects of planned measures can be quantified by simulation. However, for this application, needs of improvement were recognized to evaluate the influence of BGI on the microclimate more realistically. For decision support, standard indicators such as the number of tropical nights and hot days are not differentiated enough to quantify specific climate stress of urban residents. It is suggested to consider summer days additionally, percentiles could be used instead of fixed thresholds and the entire course of the year should play a role in the evaluation of the elements and urban design.
KW - decision support
KW - inner courtyards
KW - PALM
KW - thermal stress
KW - urban microclimate
UR - http://www.scopus.com/inward/record.url?scp=85131875635&partnerID=8YFLogxK
U2 - 10.3390/su14116861
DO - 10.3390/su14116861
M3 - Article
VL - 14
JO - Sustainability
JF - Sustainability
SN - 2071-1050
IS - 11
M1 - 6861
ER -