astronomy

Gabriele Hegerl

Gabriele Hegerl is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Gabriele Hegerl rather than just read about it. In short: Gabriele Clarissa Hegerl (born 9 January 1962) is a German climate scientist. She is a professor of climate system science at the University of Edinburgh School of GeoSciences.

Key takeaways

Gabriele Hegerl belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Gabriele Hegerl to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Gabriele Hegerl from memory before moving on to harder problems.

Reference excerpt

Gabriele Clarissa Hegerl (born 9 January 1962) is a German climate scientist. She is a professor of climate system science at the University of Edinburgh School of GeoSciences. 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 Assessment Report.

Early life and education Hegerl was born on 9 January 1962 in Munich, Germany. She gained undergraduate and graduate degrees at LMU Munich in mathematics, finishing with a PhD in 1991, with a thesis using a numerical solution of the Navier–Stokes equations using boundary conditions.

Research and career Hegerl's research 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 conducted some of the first research on the attribution of modern climate change to anthropogenic greenhouse gas emissions supervised by Klaus Hasselmann and Hans von Storch. She led a 2006 study examining climate sensitivity, then commonly accepted as 1.5 to 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 to 6.2K. In an interview with The Washington Times, Hegerl said "Our reconstruction supports a lot of variability in the past". 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". 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. 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.

Publications Hegerl's publications include:

"Annular Modes in the Extratropical Circulation. Part II: Trends", "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", "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" "On multi-fingerprint detection and attribution of greenhouse gas- and aerosol forced climate change"

Honours and awards Hegerl was appointed CBE for "services to Climate Science" in the 2025 Birthday Honours List. In 2013, she was elected a Fellow of the Royal Society of Edinburgh (FRSE) and in 2017 she was elected a Fellow of the Royal Society (FRS). In 2018 she became a member of the German Academy of Sciences Leopoldina. In 2016, Professor Hegerl won the Hans Sigrist Prize "for her groundbreaking scientific work in this year’s prize field, 'The Human Fingerprint on the Earth System'" In 2018 she was made an honorary Doctor of Science by Leeds University.

Personal life Hegerl was married to Thomas Crowley and was later widowed. She has two sons, born in 2000 and 2003.

References

Illustrations

Worked examples

Example 1 — a first encounter with Gabriele Hegerl

Start with the simplest possible case. Write down what Gabriele Hegerl claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Gabriele Hegerl before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Gabriele Hegerl ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Gabriele Hegerl

In research: Gabriele Hegerl appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Gabriele Hegerl in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Gabriele Hegerl is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1962 births, 20th-century German women scientists, 21st-century German women scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Gabriele Hegerl outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Gabriele Hegerl in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Gabriele Hegerl means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Gabriele Hegerl out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Gabriele Hegerl in simple terms?

Gabriele Clarissa Hegerl (born 9 January 1962) is a German climate scientist. She is a professor of climate system science at the University of Edinburgh School of GeoSciences.

Why does Gabriele Hegerl matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Gabriele Hegerl?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Gabriele Hegerl.