introduction of climate map and applicaiton in planning of ho chi minh city

URBAN CLIMATE MAP

Advisor: Prof. Lutz KatzschnerStudents: Hoang Anh

Le Nguyen Huong GiangNguyen Dinh Khoa

Vietnamese German university

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,

Building• Building volume• Ground coverage

Land use

• Building volume• Ground coverage• Natural landscape• Green space• Proximity to openness

Topography• Topography• Proximity to openness

Meteorology

• Cooling • Shadow• Sea Breeze• Slope• Wind information

Thermal load

Dynamic potentials

Dynamic potentials

FINAL UC MAP

2. KEY PRINCIPLES (INPUTS)

2. KEY PRINCIPLES (INPUTS)

3. ANALYSIS THE CLIMATE MAPS OF HCMC

3. ANALYSIS THE CLIMATE MAPS OF HCMC

1 Fresh & cool air production zones

2 Cool air production zones.

3 Mixed & transitional climate zone

4 Overheating potential zone

5 Overheating zone 1

6 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 & openness

Heat storage & Ventilation

Building information and land use

C Cool & fresh air production, green areas

Heat balance of surfaces production of fresh & cool air.

Land use classification, surface conditions

D Roughness, air paths & ventilation

Land use openness, use of background wind and local circulations

Land use & openness surface data

E Slope analysis, downhill movements

Relief energy for thermal induced circulations

Digital elevation model

4. CLIMATE MAP & PLANNING

4. CLIMATE MAP & PLANNING

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