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Julia Barsi

Julia Barsi

Research Physicist and lead of NASA Goddard's Code 618 Calibration Laboratories, specializing in radiometric calibration of Earth observation satellite instruments including Landsat.

Jun 26, 2026

1:08
What does your work entail?
1:10
I run a collection of laboratories that do radiometric calibration and characterization and reflectance characterization of materials for various types of instruments.
1:23
So calibration and characterization are the processes that allow us to understand the properties and performance of an instrument so that we can interpret those results for scientific application.
1:33
There's many types of calibration and characterization that go into the process of building an instrument.
1:39
But in my labs, we do radiometric and spectral calibration and characterization.
1:44
The radiometric calibration establishes the relationship between the sensor response and a physical parameter, in this case, radiance, or the amount of energy that is hitting that instrument.
1:56
And we work in the UV visible near-infrared and shortwave.

14 MINS LATER

16:14
And that is, what was your giant leap?

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