Giles Harrison

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Giles Harrison is a Professor of Atmospheric Physics in the Department of Meteorology at the University of Reading, where he has served as Head of Department several times. He is a Visiting Professor at the Universities of Bath and Oxford. His research work continues over 250 years of UK studies in atmospheric electricity, in its modern form an interdisciplinary topic at the intersection of aerosol and cloud physics, solar-climate and internal-climate interactions, scientific sensor development and the retrieval of quantitative data from historical sources.

Contents

Education

He was educated at Marling School Stroud, and St Catharine's College, Cambridge. He holds doctorates from Imperial College London (PhD 1992), and the University of Cambridge (ScD 2014). [1]

Research activity

A major part of Harrison’s work has focused on the charging of atmospheric particles and droplets and the effect of charge on their behaviour, for which he has pioneered new instruments and methods. This has included applying early atmospheric electrical data for reconstruction of past air pollution [2] and in investigating the electrical effect of solar changes [3] on the Earth’s and other atmospheres. [4] His experimental work has clearly demonstrated the widespread presence of atmospheric charge in regions well away from thunderstorms, particularly at horizontal edges of layer clouds. Motivated by the need to increase in situ atmospheric measurements of these phenomena using sensitive balloon-carried instrumentation, [5] Harrison and his co-workers have provided some unique atmospheric measurements. These include turbulence data able to be applied beyond Earth to Titan’s atmosphere, [6] the first published airborne measurements of the Icelandic volcanic ash from Eyjafjallajökull, [7] which were undertaken in UK airspace at government request during the April 2010 flight ban, [8] direct evidence for unexpected enhancement of ionisation in the lower atmosphere during a solar storm, [9] and observations of charge made opportunistically within a dust layer transported to the UK by the remnants of Hurricane Ophelia. [10] Analysis, with co-workers, of historical weather and atmospheric electricity data from Shetland during the 1960s nuclear weapons tests, has associated this additional ionisation with increased rainfall. [11]

Other work

Beyond atmospheric electricity and atmospheric measurements, Harrison conceived and led the National Eclipse Weather Experiment. [12] This Citizen Science project associated with the 2015 solar eclipse involved up to 3500 pupils and teachers nationally, [13] promoted through the BBC’s Stargazing Live. [14] He subsequently edited a themed journal issue, [15] bringing together new findings in “eclipse meteorology”. He also contributed to the successful campaign of the Cloud Appreciation Society to persuade the World Meteorological Organization to classify the first new cloud since 1951, asperitas, through convening an international team which suggested a mechanism for its formation. [16]

Publications

He has authored or co-authored about 300 papers, [17] co-edited Planetary Atmospheric Electricity [18] and his successful postgraduate textbook on meteorological measurements [19] is now available in Chinese.

Recognition

Harrison was elected to the Academia Europaea in 2014. [20] He is a Senior Fellow of the Higher Education Academy and a Fellow of the Institute of Physics. In 2011 he was the Bill Bright lecturer at the International Electrostatics Conference. [21] In 2016 he was awarded the Edward Appleton Medal and Prize by the Institute of Physics, and he is the winner of the 2021 Christiaan Huygens Medal awarded by the European Geosciences Union. [22] He chairs the Royal Meteorological Society's Special Interest Group on atmospheric electricity and serves on the Editorial Board of Environmental Research Letters.

Related Research Articles

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The greenhouse effect is a process that occurs when energy from a planet's sun goes through its atmosphere and warms the planet's surface, but the atmosphere prevents the heat from returning directly to space, resulting in a warmer planet. Light arriving from our Sun passes through Earth's atmosphere and warms its surface. The warmed surface then radiates heat, which is absorbed by greenhouse gases such as carbon dioxide. Without the natural greenhouse effect, Earth's average temperature would be well below freezing. Current human-caused increases in greenhouse gases trap greater amounts of heat, causing the Earth to grow warmer over time.

Meteorology Interdisciplinary scientific study of the atmosphere focusing on weather forecasting

Meteorology is a branch of the atmospheric sciences, with a major focus on weather forecasting. The study of meteorology dates back millennia, though significant progress in meteorology did not begin until the 18th century. The 19th century saw modest progress in the field after weather observation networks were formed across broad regions. Prior attempts at prediction of weather depended on historical data. It was not until after the elucidation of the laws of physics and more particularly, the development of the computer, allowing for the automated solution of a great many equations that model the weather, in the latter half of the 20th century that significant breakthroughs in weather forecasting were achieved. An important branch of weather forecasting is marine weather forecasting as it relates to maritime and coastal safety, in which weather effects also include atmospheric interactions with large bodies of water.

Space weather Branch of space physics and aeronomy

Space weather is a branch of space physics and aeronomy, or heliophysics, concerned with the time varying conditions within the Solar System, including the solar wind, emphasizing the space surrounding the Earth, including conditions in the magnetosphere, ionosphere, thermosphere, and exosphere. Space weather is distinct from but conceptually related to the terrestrial weather of the atmosphere of Earth. The term space weather was first used in the 1950s and came into common usage in the 1990s. Later, it was generalized to a "Space Climate" research discipline which focuses on general behaviors of longer and larger-scale variabilities and effects.

Atmospheric science Study of the atmosphere, its processes, and its interactions with other systems

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Charles Thomson Rees Wilson

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Atmospheric physics The application of physics to the study of the atmosphere

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Index of meteorology articles Wikipedia index

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Atmospheric electricity Electricity in planetary atmospheres

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Aeronomy of Ice in the Mesosphere NASA satellite of the Explorer program

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Atmospheric chemistry observational databases

Over the last two centuries many environmental chemical observations have been made from a variety of ground-based, airborne, and orbital platforms and deposited in databases. Many of these databases are publicly available. All of the instruments mentioned in this article give online public access to their data. These observations are critical in developing our understanding of the Earth's atmosphere and issues such as climate change, ozone depletion and air quality. Some of the external links provide repositories of many of these datasets in one place. For example, the Cambridge Atmospheric Chemical Database, is a large database in a uniform ASCII format. Each observation is augmented with the meteorological conditions such as the temperature, potential temperature, geopotential height, and equivalent PV latitude.

Henrik Svensmark

Henrik Svensmark is a physicist and professor in the Division of Solar System Physics at the Danish National Space Institute in Copenhagen. He is known for his work on the hypothesis that cosmic rays are an indirect cause of global warming via cloud formation.

Global atmospheric electrical circuit

The global atmospheric electrical circuit is the course of continuous movement of atmospheric electricity between the ionosphere and the Earth. Through solar radiation, thunderstorms, and the fair-weather condition, the atmosphere is subject to a continual and substantial electrical current.

Meteorological instrumentation

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The University of Reading Atmospheric Observatory, is an atmospheric observatory and weather station located on the Whiteknights Campus of the University of Reading. It forms part of the university's Department of Meteorology. The site at its current location has been a centre for atmospheric research since 1970, but the weather record was originally started by the University College of Reading in 1901 at the London Road campus as a rainfall station with a near complete daily record from January 1908. Automatic meteorological observations are continually recorded at the site and available online

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References

  1. "Academy of Europe: CV". www.ae-info.org. Retrieved 2021-09-28.
  2. Ravilious, Kate (2002-09-12). "Deciphering the sparks". The Guardian. ISSN   0261-3077 . Retrieved 2019-11-07.
  3. "The sun joins the climate club". www.newscientist.com. Retrieved 2019-11-07.
  4. "Secrets of Neptune's atmosphere". Cosmos Magazine. Retrieved 2019-11-07.
  5. "Professor Giles Harrison: finding novel ways to study the natural world".{{cite web}}: CS1 maint: url-status (link)
  6. "NASA - Fasten Your Seat Belts, Turbulence Ahead - Lessons From Titan". www.nasa.gov. Retrieved 2019-11-07.
  7. "Electric Ash Found in Iceland Plume Miles From Volcano". National Geographic News. May 29, 2010.
  8. "Volcanic ash".{{cite web}}: CS1 maint: url-status (link)
  9. Nicoll, K. A.; Harrison, R. G. (2014-06-02). "Synopsis: Unexpected Impact from Medium-Sized Solar Flare". Physics. 112 (22): 225001. doi: 10.1103/physrevlett.112.225001 . PMID   24949773.
  10. "Dust plume in 'red sun' event was highly charged". Physics World. 2018-06-25. Retrieved 2019-11-07.
  11. Perkins, Sid (2020-05-13). "Can nuclear fallout make it rain?". Science | AAAS. Retrieved 2020-10-25.
  12. "Philosophical Transactions A: The 2015 solar eclipse | Publishing blog | Royal Society". blogs.royalsociety.org. Retrieved 2019-11-07.
  13. Portas, Antonio M.; Barnard, Luke; Scott, Chris; Harrison, R. Giles (2016-09-28). "The National Eclipse Weather Experiment: use and evaluation of a citizen science tool for schools outreach". Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 374 (2077): 20150223. Bibcode:2016RSPTA.37450223P. doi:10.1098/rsta.2015.0223. PMC   5004053 . PMID   27550761.
  14. "Stargazing Live: Eclipse data collectors wanted - BBC News School Report", School Report, 2015-02-23, retrieved 2019-11-07
  15. "Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences: Vol 374, No 2077". royalsocietypublishing.org. Retrieved 2019-11-07.
  16. "Science Explains "Rough and Chaotic" Cloud Feature". Eos. Retrieved 2019-11-07.
  17. https://www.ae-info.org/attach/User/Harrison_R_Giles/Publications/Pubs.pdf [ bare URL PDF ]
  18. Planetary Atmospheric Electricity | François Leblanc | Springer. Space Sciences Series of ISSI. Vol. 30. Springer. 2008. doi:10.1007/978-0-387-87664-1. ISBN   9780387876634.
  19. Harrison, R. G. (2015-01-20). Meteorological measurements and instrumentation. ISBN   9781118745809. OCLC   903279597.
  20. https://www.ae-info.org/ae/Member/Harrison_R_Giles
  21. Taylor, D. Martin (2011). "13th International Conference on Electrostatics". Journal of Physics: Conference Series. 301: 011001. doi: 10.1088/1742-6596/301/1/011001 .
  22. "EGU announces its 2021 awards and medals!" . Retrieved 2020-10-22.