• Proceedings of the Korean Environmental Sciences Society Conference
• /
• 2016.10a
• /
• pp.241-241
• /
• 2016

• Proceeding of Spring/Autumn Annual Conference of KHA
• /
• 2008.04a
• /
• pp.297-302
• /
• 2008

Urbanization has caused population influx into cities, creating housing problems, and housing developmental plans have often resulted in high-rise and high-density housing complexes. Such development have seldom incorporated the environmental factors associated with the complexes and the surroundings, just being busy in increasing the volume of the housing supplies, and as a result, various environmental problems, such as disruption of the air flow, reduction of sunlight exposure amount, and temperature rise, have occurred, deteriorating the living environments. Accordingly, the objectives of this paper are to find out the causes of the problems in the contemporary complex development plans from the urban environmental viewpoint through the investigative analysis of microclimate environment in those complexes, and, further, to present a residential complex planning technique and developmental direction so as to remedy the problems described above. Then a 3-D microclimate model 'Envi-Met' was employed to analyze and predict on the related issues, per the selected planning factors.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
• /
• v.9 no.5
• /
• pp.565-575
• /
• 2019

This study aimed to examine the influence of physical environment, microclimate, and comfort on sustaining outdoor activities. This study has identified the main factors that influence sustaining outdoor activities as physical environment, comfort in the physical environment, microclimate and microclimate comfort. For analysis, the study conducted the investigation on pedestrian walkability during spring, summer and winter of the year 2017. The microclimate levels were also recorded at the same time. The method of logit regression analysis was used to analyze these outcomes. The result showed that the comfort and safety of the physical environment as well as the ideal climatic conditions, in terms of temperature, wind level, and solar insolation, were related to sustaining outdoor activities. Also, walking and shopping in the physical and climatic environment were the factors that were found to be more influenced than the act of remaining in a place and forming conversations.

• Journal of Korean Society of societal Security
• /
• v.4 no.1
• /
• pp.29-37
• /
• 2011

Recently, Inhabitants nearby the high embankment road have requested a civil complaint on the environmental deteriorations and economic harms. This study was carried out numerical simulation using the 3-D microclimate model 'Envi-met' in order to investigate the variations of a flow field and a temperature field at the road sections with a high embankment and a bridge. About the simulation of flow field, the wind field has changed due to the disturbance of airflow by a high embankment road considerably. And the wind velocity decreased in the whole of simulation space widely. But, the wind velocity and wind direction sited loose to the section of a bridge, relatively. In the results of a temperature field, the slight variations of temperature field were discovered by the disturb of the mixing flow from a high embankment road. These results indicate that the numerical simulation can provide useful information to minimize the disasters, such as traffic accidents and various microclimatic environments in the transportation projects.

• Journal of Conservation Science
• /
• v.26 no.4
• /
• pp.385-395
• /
• 2010

This study aimed to identify weathering factors and to assess the conservation environment through microclimatic analysis of Hyeonpung Seokbinggo (ice-storing stone warehouse). The stone blocks inside Seokbinggo suffered crack, displacement, break-out, exfoliation, efflorescence, brown and black discoloration, and biological colonization. Biological colonization represented the maximum deterioration rate(24%) among those weathering forms. The indoor microclimate showed parallel patterns with outdoor one, but the indoor temperature and relative humidity ranged far narrower than outdoor and remained steady. The environmental characteristics resulted from blocking-out of outdoor heat by the closed entrance and surrounding microtopography. This prevented water condensation and freezing effects, so that it reduced physical deterioration of rock, and maximized ice-storing effect for long time. However, contrary to positive effect, extremely high relative humidity over 99% accelerated biological colonization inside the Seokbinggo.

• Proceedings of the Korean Institute of Landscape Architecture Conference
• /
• 2020.06a
• /
• pp.97-97
• /
• 2020

• Journal of the Korean Institute of Educational Facilities
• /
• v.7 no.2
• /
• pp.15-21
• /
• 2000

Microclimate of open spaces on campus tends to be important because it is related with people's comfort and it can influences their behaviors in outdoor during summer. Climatic components for 4 points, concrete paving, lawn, landscaped pergola and nearby forest on university campus were measured and evaluated. The results show that the air temperatures on paving such as concrete and lawn under the direct solar radiation were higher than the temperatures of canopied spaces such as pergora and nearby forest by up to $7^{\circ}C$ during summer. Characteristics of temperatures on lawn were similar to those on concrete paving. After evaluation, concrete surface was worst among 4 points, while landscaped pergola was the most effective facility in terms of thermal comfort during summer.

• Korean Journal of Environment and Ecology
• /
• v.30 no.4
• /
• pp.793-799
• /
• 2016

This study examined Platanus orientalis and Ulmus davidiana planted in downtown parks to identify the correlations among microclimatic factors such as temperature in the crown, air flow, and wind speed. For the field survey, measurements were taken at 1 hour intervals from 09:00 am to 06:00 pm in August. For the measurement of microclimatic factors, data on temperature, light intensity, air flow, and wind speed were collected using a quantum sensor (PAR Quantum Sensor SKP215), a precision thermometer (Pt1000-Sensor), and a combination anemometer (1467 G4 & HG4). The results of the analysis demonstrated that both Platanus orientalis and Ulmus davidiana, showed a greater cooling effect inside the crown as compared with the outside temperature. The cooling effect inside the crown was more evident with air flow and wind speed factors. With relation to wind, the inner temperature of the crown of Platanus orientalis decreased due to air flow while that of Ulmus davidiana decreased due to wind speed. With no wind, the average variation in temperature inside the crown was $-0.9^{\circ}C$ for Ulmus davidiana and $-0.958^{\circ}C$ for Platanus orientalis, indicating that Platanus orientalis was relatively more effective in lowering the temperature of the planting space than Ulmus davidiana. This study is significant because it shows that different tree species have different effects on the microclimate and that factors affecting the formation of the microclimate of trees may vary with species. Further studies on species other than broad leaf trees, such as evergreen trees and shrubs, are required in order to plan the distribution of landscaping trees that are effective in regulating the microclimate within urban green spaces.

• Proceedings of the Korean Environmental Sciences Society Conference
• /
• 2019.10a
• /
• pp.167-167
• /
• 2019

• Ecology and Resilient Infrastructure
• /
• v.7 no.1
• /
• pp.43-52
• /
• 2020

For investigating restriction in the use of computer modeling results without adjusting them with measured data, this study analyzed and compared microclimatic aspects and human thermal sensation between in situ measurement and computer modeling using ENVI-met in and around a small urban park of downtown Changwon in May, 2012. In the results, ENVI-met underestimated air temperatures and wind speeds than the measured ones and overestimated relative humidities. In the radiation analysis, ENVI-met overestimated solar radiation from the sky hemisphere and terrestrial radiation from the ground hemisphere and underestimated terrestrial radiation from the sky hemisphere. Also, the differences of mean radiant temperatures with the measured ones reached up to 19.6℃ which could create an 1.2 PMV difference. ENVI-met overestimated up to 2.3 PMV and 4℃ UTCI at 12:00. The difference was shown clearly in PMV than in UTCI. Therefore, when computer modeling is used in urban microclimate and human thermal sensation (comfort) studies the modeling results should be compared with measured data and adjusted adequately to adopt the results to urban and landscape planning and design.