Data Assimilation and Reanalysis

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Name *

0 points

Student ID *

email *

What is the purpose of data rescue? *

1 point

A) To create three-dimensional global weather reconstructions

B) To understand and predict extreme weather events

C) To transform data into computer code

D) None of the above

What is the analogy used in the video to explain how to get from local measurements to a global weather reconstruction?
*

1 point

A. A train journey

B. A car ride

C. A football kick

D. None of the above

What is the first step in creating a three-dimensional global weather reconstruction?
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1 point

A. Gathering local weather measurements

B. Using a model based on physical equations

C. Transforming data into algorithms

D. Digitizing measurements

Why is reconstructing the ball's trajectory difficult when there are only three different pictures of the football kick as past records?
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1 point

A. Because observations were rare

B. Because the film analogy is not accurate

C. Because the model is too simple

D. None of the above

What is the purpose of a model in creating a weather reconstruction?
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1 point

A. To tell us the ball's trajectory

B. To give us a framework for how the ball could behave

C. To compare with photographs

D. None of the above

What are the three data assimilation strategies used to combine the model with starting conditions and photographs to initiate reconstructions?
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1 point

A. Particle filter method, Kalman filter, and for Deva

B. Train method, car method, and plane method

C. Boat method, bike method, and skateboard method

D. None of the above

How does the particle filter method work?
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1 point

A. It uses a weighted average to adjust the model states

B. It segments the trajectory into four parts

C. It solves equations backwards to find the ideal starting conditions

D. None of the above

What is the purpose of simulating the photograph inside the model in creating a weather reconstruction?
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1 point

A. To compare a three-dimensional model with a two-dimensional photograph

B. To adjust the model states

C. To segment the trajectory into four parts

D. None of the above

What is the method used to create a reanalysis?
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1 point

A. Using a modernized pressure measurements and a global weather prediction model

B. Using a simple weather forecast model

C. Using a complex weather forecast model

D. None of the above

What is the final product of a reanalysis?
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1 point

A. Two-dimensional continuous information for past weather

B. Three-dimensional discrete information for past weather

C. Three-dimensional continuous information for past weather

D. None of the above

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