Remote Sensing
"The technology of acquiring data and information about an object or phenomena by a device that is not in physical contact with it. In other words, remote sensing refers to gathering information about the Earth and its environment from a distance, a critical capability of the Earth observing System. For example, spacecraft in low-Earth orbit pass through the outer thermosphere, enabling direct sampling of chemical species there. These samples have been used extensively to develop an understanding of thermospheric properties. Explorer-17, launched in 1963, was the first satellite to return quantitative measurements of gaseous stratification in the thermosphere. However, the mesosphere and lower layers cannot be probed directly in this way--global observations from space require remote sensing from a spacecraft at an altitude well above the mesopause. The formidable technological challenges of atmospheric remote sensing, many of which are now being overcome, have delayed detailed study of the stratosphere and mesosphere by comparison with thermospheric research advances. Some remote-sensing systems encountered in everyday life include the human eye and brain, and photographic and video cameras." (National Aeronautics and Space Administration, 2017)
"Glossary". Earth Observatory, National Aeronautics and Space Administration. Last modified August 4, 2017.
https://www.earthobservatory.nasa.gov/glossary/all.
Accessed February 14, 2019.
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Register for the 3rd Space4Water Stakeholder Meeting: Registration open
24-25 October 2023, at the Vienna International Centre
organised by the United Nations Office for Outer Space Affairs
co-organised with the Prince Sultan Bin Abdulaziz International Prize for Water (PSIPW)
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Register for the 2nd Space4Water Stakeholder Meeting - End of registration: 30 April
organised by UNOOSA in partnership with the Prince Sultan Bin Abdulaziz International Prize for Water (PSIPW)
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Registration for speakers submitting technical presentations closes on 15 April 2023.
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Gregory Giuliani
Senior Lecturer & Head of Unit at the University of Geneva and Head of the Digital Earth Unit United Nations Environment Grid Geneva
Gregory Giuliani is the Head of the Digital Earth Unit and Swiss Data Cube Project Leader at GRID-Geneva of the United Nations Environment Programme (UNEP) and a Senior Lecturer at the University of Geneva’s Institute for Environmental Sciences.