earth science

Lisan Yu

Lisan Yu is a earth science 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 Lisan Yu rather than just read about it. In short: Lisan Yu is an oceanographer, and a senior scientist at the Woods Hole Oceanographic Institution. She serves on the Earth Science Advisory Committee (ESAC), a new Federal Advisory Committee Act (FACA) committee of NASA.

Key takeaways

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

Reference excerpt

Lisan Yu is an oceanographer, and a senior scientist at the Woods Hole Oceanographic Institution. She serves on the Earth Science Advisory Committee (ESAC), a new Federal Advisory Committee Act (FACA) committee of NASA. In 2020, Yu was one of the researchers at the Woods Hole Oceanographic Institution who received a $500,000 grant from the National Oceanic and Atmospheric Administration's (NOAA) Climate Observations and Monitoring program to develop a machine learning framework to improve estimates of air-sea heat exchange in the Arctic Ocean. Yu's research involves analysing data collected by a Saildrone fleet from a 2019 Arctic mission. Yu has authored over 100 academic publications, which have been cited over 7,800 times, resulting in an h-index and i10-index of 37 and 65 respectively. Yu was one of 1,371 peer-reviewers for the JGR-Oceans journal during 2021.

Selected Academic Publications Objectively analyzed air–sea heat fluxes for the global ice-free oceans (1981–2005). Lisan Yu and Robert A Weller. Bulletin of the American Meteorological Society. 2007. Multidecade Global Flux Datasets from the Objectively Analyzed Air-sea Fluxes (OAFlux) Project: Latent and Sensible Heat Fluxes, Ocean Evaporation, and Related Surface Meteorological Variables. Lisan Yu, Xiangze Jin, and Robert A. Weller. 2008. Oceanic and terrestrial sources of continental precipitation. Luis Gimeno, Andreas Stohl, Ricardo M Trigo, Francina Dominguez, Kei Yoshimura, Lisan Yu, Anita Drumond, Ana María Durán‐Quesada, Raquel Nieto. Reviews of Geophysics. 2012. Surface irradiances consistent with CERES-derived top-of-atmosphere shortwave and longwave irradiances. Seiji Kato, Norman G Loeb, Fred G Rose, David R Doelling, David A Rutan, Thomas E Caldwell, Lisan Yu, Robert A Weller. Journal of Climate. 2013.

References

Worked examples

Example 1 — a first encounter with Lisan Yu

Start with the simplest possible case. Write down what Lisan Yu claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth science, 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 Lisan Yu 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 Lisan Yu 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 Lisan Yu

In research: Lisan Yu appears in earth science 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 Lisan Yu 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: Lisan Yu is common in secondary-school and first-year university syllabi. It links to neighbouring topics Living people, NASA people, Women oceanographers, so understanding it makes those chapters shorter.
In everyday life: Look for Lisan Yu 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 Lisan Yu in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lisan Yu 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 Lisan Yu out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lisan Yu in simple terms?

Why does Lisan Yu matter?

Because it connects several earth science 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 Lisan Yu?

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 Lisan Yu.