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Digital Earth is a global initiative aimed at harnessing the world’s data and information resources to quantitatively analyze and represent our planet, and is a virtual representation of the Earth used for monitoring, measuring and forecasting natural and human activities on the Earth. Digital Earth makes use of digital technologies to model Earth systems and is envisaged as a common platform for supporting national and international cooperation for global sustainable development, and as a newly developing point of economic growth and social well-being. As an official publication of the International Society for Digital Earth, the International Journal of Digital Earth aims to focus on the theories, technologies, applications, and societal implications related to Digital Earth and on the visionary concepts that will realize a modeled virtual world.
This virtual special issue entitled “Digital Earth and Big Earth Data” is dedicated to the celebration of the 20th Anniversary of the International Symposium on Digital Earth. Thirty papers originally published in the period from 2008 inaugural issue to the 2019 latest issue of the International Journal of Digital Earth have been selected in this collection. These papers range from the Digital Earth concept, technologies and applications to the big Earth data research. It is hoped that this special issue will encourage discussion on the new vision of Digital Earth in the light of recent technological progress, and attract more paper submissions to the journal to advance the development of Digital Earth.