Christos Stylianos Zerefos

American Geophysical Union (AGU) is an international nonprofit scientific association with 60,000 members in 137 countries. The private company is based in Washington and welcomes visitors to the first net-zero renovated building in DC, which includes a state-of-the-art conference center. AGU promotes discovery in earth and space science for the benefit of humanity by providing career and educational resources, webinars, mentoring services, and support for students and professionals at all levels in earth and space science. AGU publishes award-winning books in topics of relevance to scientists in academia, government, and industry, as well as the larger earth and space science community. AGU also has a variety of honors that recognize individuals who have made outstanding contributions to earth and space science through scientific research, education, science communication, and outreach.

The Norwegian Academy of Science & Letters operates as a non-govern¬mental, nationwide, and interdisciplinary body which embraces all fields of learning. It engages in advancement of science and scholarship services. The company was founded in May 3, 1857 and is headquartered in Oslo, Norway.

National Observatory of Athens operates as a research center. It offers real time seismicity, weather forecast, astronomical almanac, lonosphere conditions, real time fire monitoring, diachronic inventory of forest fires, lightning activity, and urban temperature. The company was founded in 1842 and is headquartered in Athens, Greece.