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astronomy

Lennart Bengtsson

Lennart Bengtsson 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 Lennart Bengtsson rather than just read about it. In short: Lennart Bengtsson (born 5 July 1935) is a Swedish meteorologist. His research interests include climate sensitivity, extreme events, climate variability and climate predictability.

Lennart Bengtsson — main illustration
Lennart Bengtsson — illustration

Key takeaways

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

Reference excerpt

Lennart Bengtsson (born 5 July 1935) is a Swedish meteorologist. His research interests include climate sensitivity, extreme events, climate variability and climate predictability.

Career Bengtsson was head of research at the European Centre for Medium-Range Weather Forecasts from 1975 to 1981 and then director until 1990; then director of the Max Planck Institute for Meteorology in Hamburg. He became a recipient of the Milutin Milankovic Medal in 1996. He is now a senior research fellow at the Environmental Systems Science Centre in the University of Reading. In 2005, he was awarded the René Descartes Prize for Collaborative Research together with Prof. Ola M. Johannessen and Dr. Leonid Bobylev from the Nansen Environmental and Remote Sensing Centre in Norway and Russia for the Climate and Environmental Change in the Arctic project. In 2006, he was awarded the 51st International Meteorological Organization Prize of the World Meteorological Organization for pioneering research in numerical weather prediction. In 2009, he was made an honorary fellow of the Royal Meteorological Society in recognition of his contribution to meteorology.

Environmental Research Letters rejection of paper in 2014 A draft paper discussing issues of climate sensitivity and uncertainties in the IPCC Fourth and Fifth Assessment Reports in relation to a recent paper by Otto et al. was submitted by Bengtsson and colleagues to Environmental Research Letters in February 2014, and was rejected in mid March after peer review by two referees who found that it did not meet the requirement to "significantly advance knowledge of the field". Following this, Bengtsson and his co-authors then requested the journal to publish it as a shorter "Perspective" article, but in early April the journal's editorial board turned this request down, adding that the paper contained errors and exceeded the normal size limit for "Perspective" pieces. They suggested that the errors should be corrected and a full-length paper resubmitted with a new analysis of the data. The journal said they reject 65–70 percent of papers submitted. As its lead story on 16 May under the headline "Scientists in cover-up of 'damaging' climate view", The Times said that the paper Bengtsson had submitted to Environmental Research Letters in February had been rejected for what Bengtsson called "activist" reasons. The publishers, the Institute of Physics, stated that the paper "which was the subject of this morning's front page story of The Times, contained errors, in our view did not provide a significant advancement in the field, and therefore could not be published in the journal." They said that "The comments taken from the referee reports were taken out of context and therefore, in the interests of transparency, we have worked with the reviewers to make the full reports available", and put online the referee reports from mid March when the paper had been rejected. Later that day, Bengtsson issued a statement that "I do not believe there is any systematic 'cover-up' of scientific evidence on climate change or that academics' work is being 'deliberately suppressed', as the Times front page suggests. I am worried by a wider trend that science is gradually being influenced by political views".

Global Warming Policy Foundation In 2014, Bengtsson joined the Global Warming Policy Foundation as a board member, but resigned soon after.

References

External links Interview / biography Lennart Bengtsson: Global climate change and its relevance for a global energy policy, published at Die Klimazwiebel, 12 March 2013

Illustrations

Lennart Bengtsson illustration

Worked examples

Example 1 — a first encounter with Lennart Bengtsson

Start with the simplest possible case. Write down what Lennart Bengtsson 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 Lennart Bengtsson 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 Lennart Bengtsson 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 Lennart Bengtsson

In research
Lennart Bengtsson 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 Lennart Bengtsson 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
Lennart Bengtsson is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1935 births, Academics of the University of Reading, Climatologists, so understanding it makes those chapters shorter.
In everyday life
Look for Lennart Bengtsson 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 Lennart Bengtsson in 20 minutes

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

Frequently asked questions

What is Lennart Bengtsson in simple terms?

Lennart Bengtsson (born 5 July 1935) is a Swedish meteorologist. His research interests include climate sensitivity, extreme events, climate variability and climate predictability.

Why does Lennart Bengtsson 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 Lennart Bengtsson?

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 Lennart Bengtsson.

Tags

  • 1935 births
  • Academics of the University of Reading
  • Climatologists
  • Living people
  • Max Planck Institute directors
  • Members of the Royal Swedish Academy of Sciences
  • People from Trollhättan
  • Stockholm University alumni
  • Swedish meteorologists
  • Uppsala University alumni

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