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SAGE II and Picasso-Cena - Contenido educativo

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Subido el 28 de mayo de 2007 por EducaMadrid

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NASA Connect Segment exploring the differences between the remote sensing devices of SAGE II and Picasso-Cena. It also explains how Picasso-Cena will help scientists measure aerosols more accurately.

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Compare and contrast SAGE II with PICASSO-CINA. 00:00:00
How will PICASSO-CINA help scientists measure aerosols more accurately? 00:00:08
Dr. Anderson? 00:00:14
Hi, Jennifer. 00:00:16
Hi, Van. 00:00:18
Hi. 00:00:20
Dr. DeYoung told me you guys were coming over to learn how a satellite instrument measures 00:00:21
aerosols. 00:00:26
Actually, he thought you could help us out on information about satellite systems. 00:00:27
I'd be glad to help. 00:00:31
I'm involved with a satellite instrument called SAGE II, which stands for Stratospheric Aerosol 00:00:32
and Gas Experiment. 00:00:36
The less sunlight that gets through the atmosphere at specific wavelengths, the higher density 00:00:38
of aerosols there are in the atmosphere. 00:00:42
A way to demonstrate what the SAGE II photometer might see up in space is to hit two erasers 00:00:44
together and shine a light through the dust. 00:00:49
This light from the flashlight represents the light from the sun. 00:00:51
Photometers look at the reduction of the sun's light to measure how many aerosols there are 00:00:55
between the sun and the satellite. 00:00:59
Remember, SAGE II only uses light from the sun. 00:01:01
You know, Van, when I was a student in college, I had to actually collect samples from a real 00:01:05
cloud. 00:01:09
Really? 00:01:10
Oh, yeah. 00:01:11
I would climb Mount Mitchell, North Carolina when the clouds would collect around the mountain. 00:01:12
Droplets would form on a Teflon string collector I would hold up and would run down into a 00:01:15
container. 00:01:19
It demonstrates the same principle which applies when water vapor is attracted to an aerosol 00:01:20
in the atmosphere to create drops in clouds. 00:01:24
Cool. 00:01:26
Say, how would you like to learn about the Picasso SINA system? 00:01:27
Okay. 00:01:30
Picasso SINA, like SAGE II, will be a satellite-borne instrument that measures aerosols. 00:01:31
But it is quite different than SAGE II in that Picasso SINA uses active remote sensing 00:01:36
while SAGE II uses passive remote sensing. 00:01:41
My colleague, Dr. Ali Omar, is developing the Picasso SINA system along with Hampton 00:01:44
University, NASA Langley Research Center, Ball Aerospace, and the French Space Agency, 00:01:49
CNES. 00:01:55
Why don't I send both of you over to see them right now? 00:01:56
That would be great. 00:01:59
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Idioma/s:
en
Materias:
Matemáticas
Niveles educativos:
▼ Mostrar / ocultar niveles
      • Nivel Intermedio
Autor/es:
NASA LaRC Office of Education
Subido por:
EducaMadrid
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
395
Fecha:
28 de mayo de 2007 - 16:53
Visibilidad:
Público
Enlace Relacionado:
NASAs center for distance learning
Relación de aspecto:
4:3 Hasta 2009 fue el estándar utilizado en la televisión PAL; muchas pantallas de ordenador y televisores usan este estándar, erróneamente llamado cuadrado, cuando en la realidad es rectangular o wide.
Resolución:
480x360 píxeles
Tamaño:
12.19 MBytes

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