This dataset contains pictures that show status of OAL sites at different stages. Also, this dataset contains pictures taken during various activities and meetings.

Normalized Difference Vegetation Index indicate the greenery density of a patch of land. This dataset present the variation of greenery change in Hong Kong during 2000-2020

This dataset recorded the long-term climate change of the urban area in Hong Kong (e.g., temperature, relative humidity, wind speed, wind direction,...)