Activa JavaScript para disfrutar de los vídeos de la Mediateca.

SAGE II and Picasso-Cena - Contenido educativo

El ajuste de pantalla se aprecia al ver el vídeo en pantalla completa. Elige la presentación que más te guste:

Subido el 28 de mayo de 2007 por EducaMadrid

395 visualizaciones

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.

Más información Transcripción

Descargar la transcripción

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

Valoración:

Eres el primero. Inicia sesión para valorar el vídeo.

Idioma/s:

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: