Gabriele C. Hegerl

Gabi Hegerl
FRS FRSE
Born Gabriele Clarissa Hegerl
1962 (age 55–56)
Alma mater Ludwig Maximilian University of Munich (PhD)[1]
Scientific career
Fields Climate science[2]
Institutions University of Edinburgh
Duke University
Texas A&M University
Thesis Numerische Lösung der kompressiblen zweidimensionalen Navier-Stokes-Gleichungen in einem zeitabhängigen Gebiet mit Hilfe energievermindernder Randbedingungen (1991)
Website www.geos.ed.ac.uk/homes/ghegerl

Gabriele Clarissa Hegerl FRS FRSE[3] (born 1962) is Professor of Climate System Science at the University of Edinburgh School of GeoSciences.[4] Prior to 2007 she held research positions at Texas A&M University and at Duke University's Nicholas School of the Environment, during which time she was a co-ordinating lead author for the Intergovernmental Panel on Climate Change (IPCC) Fourth and Fifth[5] Assessment Report.[6][7]

Education

Hegerl was educated at Ludwig Maximilian University of Munich where she was awarded a PhD in 1991[1] where her thesis used a numerical solution of the Navier–Stokes equations using boundary conditions.[1]

Research and career

Hegerl's research[8] [9][10] in the natural variability of climate and changes in climate due to natural and anthropogenic changes in radiative forcing (such as greenhouse warming, climate effects of volcanic eruptions and changes in solar radiation). Hegerl has also led well-known research on the attribution of modern climate change to anthropogenic greenhouse gas emission.

She led a 2006 study examining climate sensitivity, then commonly accepted as 1.5–4.5K in response to a doubling of atmospheric CO2, to review observational studies suggesting that climate sensitivity could be as much as 7.7K or even exceed 9K. By using large-ensemble energy balance modelling to simulate temperature responses to historic changes in the radiative forcing effect of solar changes, volcanic eruptions and greenhouse gases, and comparing this to climate reconstructions, they produced an independent estimate that climate sensitivity was probably within the range of 1.5–6.2K.[9] In an interview with The Washington Times, Hegerl said "Our reconstruction supports a lot of variability in the past".[11]

She is a co-ordinating lead author on the IPCC Fourth Assessment Report for Working Group I in the chapter on "Understanding and Attributing Climate Change".[12] Her 2006 reconstruction was cited in the chapter on "Paleoclimate" in support of the conclusion that the 20th century was likely to have been the warmest in the Northern Hemisphere for at least 1,300 years.[13]

She was a member of a team which reviewed recent reconstructions of the temperature record of the past 1000 years, and in 2007 published their own reconstruction from proxies, finding that the maximum pre-industrial temperature in 1,000 years had been significantly exceeded by recent instrumental temperatures.[10]

Publications

Hegerl's publications[2][14] include:

  • "Annular Modes in the Extratropical Circulation. Part II: Trends",[15]
  • "Simulation of the influence of solar radiation variations on the global climate with an ocean-atmosphere general circulation", by U Cubasch, R Voss, GC Hegerl, J Waszkewitz, T. J. Crowley – Climate Dynamics, 1997
  • "Multi-fingerprint detection and attribution analysis of greenhouse gas, greenhouse gas-plus-aerosol and solar forced climate change", by G. C. Hegerl, K. Hasselmann, U. Cubasch, J. F. B. Mitchell, E. Roeckner, R. Voss and J. Waszkewitz
  • "Detecting Greenhouse-Gas-Induced Climate Change with an Optimal Fingerprint Method", [16]
  • "Detection of climate change and attribution of causes", by JFB Mitchell, DJ Karoly, GC Hegerl, FW Zwiers, MR … – Climate Change 2001: The Scientific Basis, 2001
  • "The Effect of Local Sea Surface Temperatures on Atmospheric Circulation over the Tropical Atlantic"[17]
  • "On multi-fingerprint detection and attribution of greenhouse gas- and aerosol forced climate change"[18]

Honours and awards

In 2013 she was elected a Fellow of the Royal Society of Edinburgh (FRSE)[19] and in 2017 she was elected a Fellow of the Royal Society (FRS).[3] In 2018 she was made an honorary Doctor of Science by Leeds University.[20]

References

  1. 1 2 3 Hegerl, Gabriele Clarissa (1991). Numerische Lösung der kompressiblen zweidimensionalen Navier-Stokes-Gleichungen in einem zeitabhängigen Gebiet mit Hilfe energievermindernder Randbedingungen. tib.eu (PhD thesis). University of Munich. OCLC 636829273.
  2. 1 2 Gabriele C. Hegerl publications indexed by Google Scholar Edit this at Wikidata
  3. 1 2 Anon (2017). "Professor Gabriele Hegerl FRS". royalsociety.org. London: Royal Society. Archived from the original on 23 May 2017. One or more of the preceding sentences incorporates text from the royalsociety.org website where:
    “All text published under the heading 'Biography' on Fellow profile pages is available under Creative Commons Attribution 4.0 International License.” --Royal Society Terms, conditions and policies at the Wayback Machine (archived 2016-11-11)
  4. ↑ People | School of GeoSciences archived 28 June 2012
  5. ↑ "Climate change report" (PDF). Archived from the original (PDF) on 21 February 2014.
  6. ↑ IPCC AR4
  7. ↑ "Interview of Hegerl]" (PDF). Archived from the original (PDF) on 14 August 2011. by Hans von Storch, March 2011
  8. ↑ Hegerl, G. (1998), "The past as guide to the future" (PDF), Nature, 392 (6678): 758, Bibcode:1998Natur.392..758H, doi:10.1038/33799
  9. 1 2 Hegerl, Gabriele C.; Crowley, Thomas J.; Hyde, William T.; Frame, David J. (2006), "Climate sensitivity constrained by temperature reconstructions over the past seven centuries", Nature, 440 (7087): 1029–1032, Bibcode:2006Natur.440.1029H, doi:10.1038/nature04679, PMID 16625192
  10. 1 2 Juckes, M. N.; Allen, M. R.; Briffa, K. R.; Esper, J.; Hegerl, G. C.; Moberg, Anders; Osborn, T. J.; Weber, S. L. (2007), "Millennial temperature reconstruction intercomparison and evaluation" (PDF), Climate of the Past, 3 (4): 591, doi:10.5194/cp-3-591-2007
  11. ↑ Scientists cool outlook on global warming, The Washington Times – 21 April 2006
  12. ↑ Intergovernmental Panel on Climate Change Working Group I: The Physical Science Basis of Climate Change Archived 1 May 2007 at the Wayback Machine.
  13. ↑ IPCC AR4 "Section 6.6: The Last 2,000 Years". Archived from the original on 28 March 2015.
  14. ↑ Gabriele C. Hegerl publications indexed by the Scopus bibliographic database. (subscription required)
  15. ↑ Thompson, David W. J.; Wallace, John M.; Hegerl, Gabriele C. (2000). "Annular Modes in the Extratropical Circulation. Part II: Trends". Journal of Climate. 13 (5): 1018–1036. doi:10.1175/1520-0442(2000)013<1018:AMITEC>2.0.CO;2. ISSN 0894-8755.
  16. ↑ Hegerl, Gabriele C.; von Storch, Hans; Hasselmann, Klaus; Santer, Benjamin D.; Cubasch, Ulrich; Jones, Philip D. (1996). "Detecting Greenhouse-Gas-Induced Climate Change with an Optimal Fingerprint Method". Journal of Climate. 9 (10): 2281–2306. doi:10.1175/1520-0442(1996)009<2281:DGGICC>2.0.CO;2. ISSN 0894-8755.
  17. ↑ Chang, Ping; Saravanan, R.; Ji, Link; Hegerl, G. C. (2000). "The Effect of Local Sea Surface Temperatures on Atmospheric Circulation over the Tropical Atlantic Sector". Journal of Climate. 13 (13): 2195–2216. doi:10.1175/1520-0442(2000)013<2195:TEOLSS>2.0.CO;2. ISSN 0894-8755.
  18. ↑ Hegerl, G. C.; Hasselmann, K.; Cubasch, U.; Mitchell, J. F. B.; Roeckner, E.; Voss, R.; Waszkewitz, J. (1997). "Multi-fingerprint detection and attribution analysis of greenhouse gas, greenhouse gas-plus-aerosol and solar forced climate change". Climate Dynamics. 13 (9): 613–634. doi:10.1007/s003820050186. ISSN 0930-7575.
  19. ↑ "Professor Gabriele Clarissa Hegerl FRSE, FRS - The Royal Society of Edinburgh". The Royal Society of Edinburgh. Retrieved 2018-02-01.
  20. ↑ "Gabriele Hegerl". University of Leeds. July 2018. Retrieved 10 July 2018.
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