National Aeronautics and Space Administration - NASA

[Pages:40]National Aeronautics and Space Administration

Hyperspectral Data for Land and Coastal Systems

Amber Jean McCullum, Juan L. Torres-P?rez, and Zach Bengtsson February 2, 2021

Course Structure and Materials

? Three, 1.5-hour sessions on January 19, January

26, and February 2

? The same content will be presented at two

different times each day:

? Session A: 11:00-12:30 EST (UTC-5) ? Session B: 16:00-17:30 EST (UTC-5) ? Please only sign up for and attend one

session per day.

? Webinar recordings, PowerPoint presentations,

and the homework assignment can be found after each session at:

?

mission/training/english/hyperspectral-dataland-and-coastal-systems

? Q&A following each lecture and/or by email at: ? juan.l.torresperez@ ? amberjean.mccullum@ or ? bengtsson@

NASA's Applied Remote Sensing Training Program

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Prerequisites

? Prerequisites: ? Please complete Fundamentals of Remote Sensing or have equivalent experience.

? Course Materials: ? oinmission/training/english/fundament als-remote-sensing

NASA's Applied Remote Sensing Training Program

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Homework and Certificates

? Homework: ? One homework assignment ? Answers must be submitted via Google Forms ? HW Deadline: Tuesday February 16

? Certificate of Completion: ? Attend all live webinars ? Complete the homework assignment by the deadline (access from ARSET website) ? You will receive certificates approximately three months after the completion of the course from: marines.martins@

NASA's Applied Remote Sensing Training Program

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Course Outline

Session 1: Overview of Hyperspectral Data

Session 2: Hyperspectral Data for Land Management

Session 3: Hyperspectral Data for Coastal and Ocean Systems

NASA's Applied Remote Sensing Training Program

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Learning Objectives

? By the end of this session, you will be able

to...

? Identify regions within the

electromagnetic spectrum where particular pigments are absorbed and how this translates to airborne or space-based hyperspectral data

? Recall the main differences between

hyperspectral data and multispectral data

? Contrast the use of hyperspectral data

across diverse coastal ecosystems

? Apply techniques to access,

download, and display hyperspectral data for coastal and ocean systems

NASA's Applied Remote Sensing Training Program

Image Credit: NASA JPL 6

Many pigments/compounds absorb in the visible range.

? Chlorophylls ? Chl a, b, c1, c2, etc. ? Main components of the photosynthetic apparatus

? Phycobilisomes ? Phycoerythrin, phycocyanin

? Work as light-harvesting antennas ? Capture photons between 500-

650nm

? Carotenes ? Photoprotection; help dissipate excess energy within the cells ? Carotenoids (i.e. Peridinin, carotene)

? Xanthophylls (i.e. Diadinoxanthin, Zeaxanthin, etc.)

Credit: otosynthesis/conceptmap/Photosynthetic_pigments.html

NASA's Applied Remote Sensing Training Program

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Spectral Comparison of Different Coral Reef Components

Porites astreoides (mustard hill coral)

Palythoa caribaeorum (zoanthid)

Reflectance (%)

25

20

15

10

5

0

400

450

P astreoides

NASA's Applied Remote Sensing Training Program

Rhizophora mangle (red mangrove)

500

550

600

Wavelength (nm)

Palythoa Rhizophora

650

700

Thalassia

Thalassia testudinum (turtle grass)

Torres-P?rez (Unpublished) 8

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