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Weather Reconnaissance

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Subido el 28 de mayo de 2007 por EducaMadrid

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NASA Why? Files segment explaining how Hurricane Hunters fly into a storm to track its progress.

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This is the plane that Hurricane Hunters use to chase storms. 00:00:00
Let's check it out. 00:00:04
Hi. You must be one of the treehouse detectives. 00:00:06
Yes, I'm RJ. 00:00:08
We're going on a mission right now. You want to go? 00:00:09
You bet. 00:00:11
All right. I'll get you in a flight suit and I'll let you talk to our pilot, Captain Ford. 00:00:12
Let's go. 00:00:16
Hello, RJ. How's our newest Hurricane Hunter today? 00:00:20
I'm fine. But why are you guys called the Hurricane Hunters? 00:00:23
Our mission is weather reconnaissance, but our most famous type of mission is to fly into hurricanes. 00:00:26
Why do you need to fly into a hurricane? 00:00:31
We fly into hurricanes to gather data which will help determine the location and intensity of the hurricane. 00:00:33
If the storm is well developed, we can locate the center and the rain bands using satellites. 00:00:38
If the hurricane is less developed, then it's harder to locate the center of the storm and it becomes more of a hunt. 00:00:43
Are we going to fly through a hurricane? 00:00:48
Not this time. But you better get strapped in. We're almost ready to go. 00:00:50
Captain Gibson, what's your job on this mission? 00:00:57
I'm a meteorologist, or what they would call an aerial reconnaissance weather officer. 00:01:01
What we do is collect all the data about the storm, such as where it's located and how strong it is. 00:01:05
We take all the information and we send it via satellite to the National Hurricane Center where they can start working on their forecasts. 00:01:12
How does the data you collect help meteorologists? 00:01:18
The National Hurricane Center sends us out to gather all the data. 00:01:21
You see, RJ, when we fly into a storm system, not only do we have weather sensors dotting the aircraft all the way around, 00:01:24
we also release sensors called drop sonnets. 00:01:30
What's happening? 00:01:36
It looks like we found our tropical disturbance. 00:01:38
Not quite a tropical storm yet, but we'll have to keep our eye on it. 00:01:40
It does decrease in intensity and perhaps become a hurricane a little later on this week. 00:01:43
That's so cool. What other types of storms are there? 00:01:47
RJ, there are four main types of storms. 00:01:50
First, you start out with a tropical wave. 00:01:53
That's just an area below pressure. 00:01:55
It just causes a lot of rainfall and doesn't have high wind speeds. 00:01:57
But as the storm intensifies, it becomes a tropical depression. 00:02:01
Those have wind speeds up to 38 miles per hour. 00:02:04
It doesn't quite have a closed circulation of winds. 00:02:07
Once it reaches 39 miles per hour, all the way up to 73 miles per hour, it becomes a tropical storm. 00:02:10
It does have a closed circulation of air. 00:02:16
When does a tropical storm become a hurricane? 00:02:19
A hurricane begins when the winds reach 74 miles per hour. 00:02:21
There are five different categories of hurricanes. 00:02:24
Category 1 starts at 74 and goes up to 95 miles per hour. 00:02:27
Then you have Category 2 that goes from 96 miles per hour to 110 miles per hour. 00:02:31
Then Category 3, 111 to 130 miles per hour. 00:02:36
Wow, that's a powerful storm. 00:02:41
Have you had very many Category 3 hurricanes? 00:02:43
Yes, we've had several that reached Category 4 hurricanes. 00:02:46
That's when the winds get from 131 to 155 miles per hour. 00:02:49
Has there ever been a Category 5 hurricane? 00:02:53
Yes, but only two have ever made landfall in the last century. 00:02:56
It requires the winds to be above 155 miles per hour. 00:02:59
And the conditions have to be just right for that to happen. 00:03:03
Well, I'm glad there aren't very many Category 5 hurricanes. 00:03:06
Me too. 00:03:10
Do you guys have a bathroom on the plane? 00:03:11
Yes, we do, but it's in the back. 00:03:13
RJ, did you find it yet? 00:03:20
I think I'll wait. 00:03:23
Thanks a lot. This was awesome. 00:03:25
Anything for the treehouse detectives. 00:03:28
Wow, I actually flew with the Air Force Reserve Hurricane Hunters. 00:03:32
Wait till the guys read my get up and go sheet on this one. 00:03:36
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Idioma/s:
en
Niveles educativos:
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Autor/es:
NASA LaRC Office of Education
Subido por:
EducaMadrid
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
338
Fecha:
28 de mayo de 2007 - 15:33
Visibilidad:
Público
Enlace Relacionado:
NASAs center for distance learning
Duración:
03′ 40″
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:
22.04 MBytes

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