🌊 Projected Sea Level on Hong Kong Land Use

This project models flood extent in Hong Kong under 3 greenhouse gas emission scenarios as defined by the Intergovernmental Panel on Climate Change (IPCC)

📌 Objectives

• Highlight urban areas and land use types that are vulnerable to sea level rise
• Inform urban planners on future spatial risks brought by climate change
• Encourage policymakers to adopt mitigative and adaptive measures
• Raise public awareness on the importance of the threats posed by sea level rise and climate change in general

🧰 Tools

• ArcGIS Pro
• Pycharm IDE

ℹ️ Data

• Lands Department(HK). "Digital Terrain Model"[asc].Scale Not Given. "DATA.GOV.HK". August 1,2020. https://data.gov.hk/en-data/dataset/hk-landsd-openmap-5m-grid-dtm/resource/620c4f4f-eac4-472f-9074-dffa2ad596fd
• Planning Department(HK). "2021 Raster Grids on Land Utilization"[API].Scale Not Given. "DATA.GOV.HK".September 30,2022. https://data.gov.hk/en-data/dataset/hk-pland-pland1-land-utilization-in-hong-kong-raster-grid/resource/6fe96592-0ca5-4a7a-8bc2-b658f76b2880
  • Source: https://www.pland.gov.hk/pland_en/info_serv/open_data/landu/

📊 Workflow

👉👉Full Workflow

• Georeferenced Digital Terrain Model (DTM) to assign coordinates
• Convert DTM into a contour map
• Convert the contour map into a digital elevation model
• Generate the flood extent raster layers using the mean sea level regarding the 3 GHG emissions scenarios
• Overlay flood extent raster layers on Land Utilization Raster Grids to visualize land types that are affected by future coastal flooding

🗺️ Output

✍️ Author

Jonathan Leung — University of Waterloo, Geomatics with Co-op