Introduction of Climate map and applicaiton in planning of Ho Chi Minh City
Vietnamese German universityURBAN CLIMATE MAP Advisor: Prof. Lutz Katzschner Students: Hoang Anh Le Nguyen Huong Giang Nguyen Dinh Khoa
OUTLINE 1. Purposes of climate map 2. Key principles (inputs) 3. Analysis the climate maps of HCMC 4. Climate map & Planning 5. Recommendation 6. References
1. PURPOSES OF CLIMATE MAP Definition ◦ The concept of UCMapping was ﬁrst developed by German researchers in the late 1970s(Matzarakis, 2005). ◦ Urban Climatic Map integrates urban climatic factors and town planning considerations. It provides an information platform to planners for making informed environmental/ planning decisions.
1. PURPOSES OF CLIMATE MAP (Cont) Purposes ◦ To understand principles of climate and to define information of climate for an area/ region; ◦ To have better urban planning; ◦ Respect natural conditions and environment ◦ Urban Climatic Map integrates urban climatic factors and town planning considerations. It provides an information platform to planners for making informed environmental/ planning decisions.
2. KEY PRINCIPLES (INPUTS) Two main UCmap components: ◦ UC-AnMap (Analysis Map): visualizes and spatializes various climatic evaluation and assessment by different Climatopes. ◦ UC-ReMap (Planning Recommendation): includes planning instructions from the urban climatic point of view. Parameters Wind directions and speeds Solar radiation Air temperature City topography Landscape Building bulks Street grids Etc,
2. KEY PRINCIPLES (INPUTS) • Building volumeBuilding • Ground coverage • Building volume • Ground coverageLand use • Natural landscape • Green space • Proximity to openness • Topography • Proximity to opennessTopography • Cooling • ShadowMeteorology • Sea Breeze • Slope • Wind information
3. ANALYSIS THE CLIMATE MAPS OF HCMC1 Fresh & cool air production zones2 Cool air production zones.3 Mixed & transitional climate zone4 Overheating potential zone5 Overheating zone 16 Overheating zone 2
3. ANALYSIS THE CLIMATE MAPS OF HCMC Green colours mean cold air production with downstream drainage or fresh air with or without relief energy The light green and orange areas are mixed zones which can be warm during day but are able to cool down at night The red colours indicates areas with more risk of heat accumulation. Layers Urban climate aspect Data used A Building volume Heat storage Building information & Land use B Built up areas & Heat storage & Ventilation Building information and land openness use C Cool & fresh air Heat balance of surfaces Land use classification, surface production, green production of fresh & cool air. conditions areas D Roughness, air paths & Land use openness, use of Land use & openness surface ventilation background wind and local data circulations E Slope analysis, Relief energy for thermal Digital elevation model downhill movements induced circulations
4. CLIMATE MAP & PLANNING “Place which requires an improvement” “Place which should be conserved”
5. RECOMMENDATION Guidelines of using climate map; Properly study climate in planning City; Collaborate with related organization for the best results; Raise the awareness of climate importance; Planners should consult urban climatologists to interpret UCMap and planning instructions appropriately
6. REFERENCES Prof. Lutz katzschner , Regional context Urban Climate Maps and Urban Planning. Ren Chao, Tejo Spit Urban Climatic Map of Arnhem City Ren Chao,Ng Edward Yan-yunga and Katzschner Lutz, Urban climatic map studies: a review