A student of the Doctoral Program of Architecture and Urbanism, UNDIP Semarang, named Hendra Sumaryana, successfully defended his dissertation entitled “Green Infrastructure Modeling to Realize Urban Thermal Comfort (Case Study: Temanggung City). The closed examination was held on July 22, 2024 at UNDIP Semarang. The closed examination was chaired by Prof. Dr. Ir. Atiek Suprapti, MT, attended by external examiners by Prof. Dr, Eng. Pradono, SE., Mec.DEV, from ITB Professors. Internal examiners presented by Prof. Dr. Ing. Ir. Gagoek Hardiman and Prof. Dr. Iwan Rudiarto, ST. MSc., and promoters Prof. Dr. net. Imam Buchori S.T. and Dr. Anang Wahyu Sejati, ST. MT. The results of the closed exam were delivered by the team leader, declared to have passed the 87th PDIAP doctorate with Cumlaude predicate with a GPA of 4.00 in a study period of less than 3 years.
The results of this study provide additional new knowledge related to the Theory of Place (Center 1997), in defining environmental comfort (Outdoor Thermal Comfort) in addition to being influenced by function, quality of space and layout form, it is also influenced by the provision of green infrastructure that is synergized with urban morphology and meteorology. The theory of environmental comfort (Center 1997) stated that the environmental management is also influenced by an understanding of historical values and spiritual values in addition to being influenced by opportunities for social action and cultural identity. The results of this study also enrich the Theory of Thermal Comfort (Hope 1990) that the calculation of urban outdoor thermal comfort is also influenced by green infrastructure in addition to using variables of air temperature, solar radiation and humidity, that is adjusted to the direction and speed of the wind, the direction of road orientation, combination and species of trees, and the type and color of road coverings. This green infrastructure modeling is called “Sumaryana Modeling” after the researcher’s name, for thermal comfort based on green infrastructure that is synergized with urban morphology and meteorology.
The researcher who currently serves as the Head of BAPPEDA Temanggung Regency provides recommendations to policy makers, observers and urban researchers, recommending a green infrastructure management that considers urban morphology and meteorology. The layout of trees is adjusted to the road orientation based on the path of the
solar radiation, also the wind direction and wind speed. The selection of road and pedestrian cover is recommended to be set a brighter colors, due to its ability to reduce the heat load on the urban environment. The best practice of the Rowali Pattern was conveyed where the motivation of the community is actively involved in urban tree management pattern activities, because it is related to historical values, spiritual values and socio-cultural values of the existence of trees and open spaces in the area. The Rowali Pattern can support the modeling of sustainable urban green infrastructure management to realize urban thermal comfort.
The results of the study have been published in a scientific journal, in 2022 in the National Scientific Journal “Majalah Geografi Indonesia” Sinta 2 with the title “The impact of land cover changes on surface temperatures in Temanggung Urban: Towards the realization of green infrastructure programs”. In the next year in 2023, the results of this study were successfully published in the International Journal of Urban Sciences. A reputable international scientific journal indexed by Scopus, Q1 with SJR 0.70, based in England with the title “Green infrastructure modeling for UHI control to urban thermal comfort: a case study of Temanggung urban area”. The results of the next research in 2024 were published in the Journal “Internatinonal Review for Spatial Planning and sustainable Development”, with the title “Rowali model for Sustainable Urban Green Infrastructure Governance A case study of Temanggung urban area”, a reputable international scientific journal Scopus Q2 SJR 0.41 based in Japan
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