Giles Harrison

Last updated

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 .

Related Research Articles

<span class="mw-page-title-main">Meteorology</span> 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 in the latter half of the 20th century, the development of the computer 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.

<span class="mw-page-title-main">Space weather</span> Branch of space physics and aeronomy

Space weather is a branch of space physics and aeronomy, or heliophysics, concerned with the varying conditions within the Solar System and its heliosphere. This includes the effects of the solar wind, especially on the Earth's magnetosphere, ionosphere, thermosphere, and exosphere. Though physically distinct, space weather is analogous to the terrestrial weather of Earth's atmosphere. The term "space weather" was first used in the 1950s and popularized in the 1990s. Later, it prompted research into "space climate", the large-scale and long-term patterns of space weather.

<span class="mw-page-title-main">Atmospheric science</span> Study of the atmosphere, its processes, and its interactions with other systems

Atmospheric science is the study of the Earth's atmosphere and its various inner-working physical processes. Meteorology includes atmospheric chemistry and atmospheric physics with a major focus on weather forecasting. Climatology is the study of atmospheric changes that define average climates and their change over time climate variability. Aeronomy is the study of the upper layers of the atmosphere, where dissociation and ionization are important. Atmospheric science has been extended to the field of planetary science and the study of the atmospheres of the planets and natural satellites of the Solar System.

<span class="mw-page-title-main">Ceilometer</span> Ground-based lidar for cloud height measurement

A ceilometer is a device that uses a laser or other light source to determine the height of a cloud ceiling or cloud base. Ceilometers can also be used to measure the aerosol concentration within the atmosphere. A ceilometer that uses laser light is a type of atmospheric lidar instrument.

<span class="mw-page-title-main">Charles Thomson Rees Wilson</span> Scottish physicist (1869–1959)

Charles Thomson Rees Wilson, was a Scottish physicist and meteorologist who won the Nobel Prize in Physics for his invention of the cloud chamber.

<span class="mw-page-title-main">Noctilucent cloud</span> Cloud-like phenomena in the upper atmosphere of Earth

Noctilucent clouds (NLCs), or night shining clouds, are tenuous cloud-like phenomena in the upper atmosphere of Earth. When viewed from space, they are called polar mesospheric clouds (PMCs), detectable as a diffuse scattering layer of water ice crystals near the summer polar mesopause. They consist of ice crystals and from the ground are only visible during astronomical twilight. Noctilucent roughly means "night shining" in Latin. They are most often observed during the summer months from latitudes between ±50° and ±70°. Too faint to be seen in daylight, they are visible only when the observer and the lower layers of the atmosphere are in Earth's shadow, but while these very high clouds are still in sunlight. Recent studies suggest that increased atmospheric methane emissions produce additional water vapor through chemical reactions once the methane molecules reach the mesosphere – creating, or reinforcing existing noctilucent clouds.

<span class="mw-page-title-main">Atmospheric physics</span> Sub-field of physics dealing with the atmospheres structure, composition, and motion

Within the atmospheric sciences, atmospheric physics is the application of physics to the study of the atmosphere. Atmospheric physicists attempt to model Earth's atmosphere and the atmospheres of the other planets using fluid flow equations, radiation budget, and energy transfer processes in the atmosphere. In order to model weather systems, atmospheric physicists employ elements of scattering theory, wave propagation models, cloud physics, statistical mechanics and spatial statistics which are highly mathematical and related to physics. It has close links to meteorology and climatology and also covers the design and construction of instruments for studying the atmosphere and the interpretation of the data they provide, including remote sensing instruments. At the dawn of the space age and the introduction of sounding rockets, aeronomy became a subdiscipline concerning the upper layers of the atmosphere, where dissociation and ionization are important.

This is a list of meteorology topics. The terms relate to meteorology, the interdisciplinary scientific study of the atmosphere that focuses on weather processes and forecasting.

<span class="mw-page-title-main">Atmospheric electricity</span> Electricity in planetary atmospheres

Atmospheric electricity describes the electrical charges in the Earth's atmosphere. The movement of charge between the Earth's surface, the atmosphere, and the ionosphere is known as the global atmospheric electrical circuit. Atmospheric electricity is an interdisciplinary topic with a long history, involving concepts from electrostatics, atmospheric physics, meteorology and Earth science.

<span class="mw-page-title-main">Aeronomy of Ice in the Mesosphere</span> NASA satellite of the Explorer program

The Aeronomy of Ice in the Mesosphere is a NASA satellite launched in 2007 to conduct a planned 26-month study of noctilucent clouds (NLCs). It is the ninetieth Explorer program mission and is part of the NASA-funded Small Explorer program (SMEX).

<span class="mw-page-title-main">Henrik Svensmark</span> Danish physicist and professor

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 fewer cosmic rays are an indirect cause of global warming via cloud formation.

<span class="mw-page-title-main">Global atmospheric electrical circuit</span> Continuous movement of atmospheric charge carriers between an upper conductive layer and surface

A global atmospheric electrical circuit is the continuous movement of atmospheric charge carriers, such as ions, between an upper conductive layer and surface. The global circuit concept is closely related to atmospheric electricity, but not all atmospheres necessarily have a global electric circuit. The basic concept of a global circuit is that through the balance of thunderstorms and fair weather, the atmosphere is subject to a continual and substantial electrical current.

<span class="mw-page-title-main">Meteorological instrumentation</span> Measuring device used in meteorology

Meteorological instruments, including meteorological sensors, are the equipment used to find the state of the atmosphere at a given time. Each science has its own unique sets of laboratory equipment. Meteorology, however, is a science which does not use much laboratory equipment but relies more on on-site observation and remote sensing equipment. In science, an observation, or observable, is an abstract idea that can be measured and for which data can be taken. Rain was one of the first quantities to be measured historically. Two other accurately measured weather-related variables are wind and humidity. Many attempts had been made prior to the 15th century to construct adequate equipment to measure atmospheric variables.

The Royal Belgian Institute for Space Aeronomy (BIRA-IASB) is a Belgian federal scientific research institute. Created in 1964, its main tasks are research and public service in space aeronomy, which is the physics and chemistry of the atmosphere of the Earth and other planets, and of outer space. The scientists rely on ground-based, balloon-, air- or space-borne instruments and computer models.

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

Brian Tinsley is a physicist who for more than 60 years has been actively researching atmospheric and space physics. He has been a professor of physics at the University of Texas at Dallas since 1976 and has served many national and international scientific organizations. He obtained his PhD from the University of Canterbury in New Zealand in November, 1963, for research on optical emissions from the upper atmosphere. With his wife, Beatrice Tinsley, later to become the first female astronomer at Yale University, he came to Dallas to work at the newly formed Southwest Center for Advanced Studies, which became the University of Texas at Dallas in 1969. They divorced in 1978, their adopted children Alan and Theresa remaining with him.

Mace Head Atmospheric Research Station is located on the West Coast of Ireland in Carna, and is one of the longest running mercury recording stations in the world. The stations location is highly important as it is far away from neighbouring cities to ensure no pollutants interfere with recordings, and its location is also highly important as it is ideal for studying the atmosphere under Northern Hemispheric and European conditions. The station has the dual status of being a World Meteorological Organization (WMO) Global Atmosphere Watch (GMO) station and a European Monitoring and Evaluation Program (EMEP) supersite. Mace Head research and monitor the climate and atmospheric composition, focusing on aerosol-cloud interactions and mercury readings.

Karen Aplin is a British atmospheric and space physicist. She is currently a professor at the University of Bristol. Aplin has made significant contributions to interdisciplinary aspects of space and terrestrial science, in particular the importance of electrical effects on planetary atmospheres. She was awarded the 2021 James Dungey Lectureship of the Royal Astronomical Society.

<span class="mw-page-title-main">Judith Lean</span> Australian-American solar and climate scientist

Judith L. Lean is an Australian-American solar and climate scientist. She is a senior scientist at the United States Naval Research Laboratory. Lean is a three time recipient of the NASA Group Achievement Award and an elected member and fellow of several academic societies.

Lerwick Observatory is a British meteorological observatory located near the port at Lerwick, Shetland Islands, United Kingdom. Along with Eskdalemuir and Hartland, Lerwick is one of three permanent geomagnetic observatories in the United Kingdom and is operated by the Met Office.

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".
  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. Archived from the original on November 9, 2020.
  8. "Volcanic ash".
  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. 6 June 2017. 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. John Wiley & Sons. ISBN   9781118745809. OCLC   903279597.
  20. "Academy of Europe: 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.