Name: ___________________________________
Partner's name: ___________________________________

"The Missing Link"

WEB ANSWER SHEET

Preface: Calibration


Room clock: ____________

Your time: ____________

How many seconds difference is there between the clock and your time?______sec

If your time says it is "9am", what time would the clock in the room read? ______

If the clock in the room says it is "11:34am, 20sec", what time is it to you? ______

SECTION 1: How do you measure ozone from the ground?


1. ______DU . . 2. ______DU

3a. ________ . . b. _________DU . . c. _________DU . . d. _________DU

e. ______________________________________________________________

_________________________________________________________________

SECTION 2: How do satellites measure ozone data?

4.

Satellite

Years Operational

NIMBUS - 7

.

METEOR - 3

.

ADEOS TOMS

.

Earth Probe TOMS

.

5. ______DU

6. ______DU

7. ______DU

SECTION 3: How do we know the satellite is correct?

8a. ( higher lower exact )

b. ______________________________________________________________

_________________________________________________________________

9. ______________________________________________________________

 

10.

Date

NIMBUS 7 (DU)

Ground (DU)

Difference

1/1/91

281

296

+15

1/2/91

.

.

.

1/3/91

.

.

.

1/4/91

.

.

.

1/5/91

289

294

+5

1/6/91

.

.

.

1/7/91

.

.

.

1/8/91

.

.

.

1/9/91

.

.

.

1/10/91

.

.

.


11. (1)

 

. . .(2)

 


12a. ______DU

b. ______DU

c.________DU

d.________%



13.

Date

NIMBUS 7 (DU)

Ground (DU)

Difference

4/20/93

274

281

+7

4/21/93

4/22/93

4/23/93

4/24/93

4/25/93

4/26/93

4/27/93

4/28/93

4/29/93


14a. ______DU . . b. ______DU . . c. ______DU . . d. _______%

15. _______

16.

17.

SECTION 4- The case of the missing data.

Before you begin, make sure you know: The ground measurements in Section 3 were _____ % (higher, lower) than the NIMBUS-7 information. (Look at questions 12 and 14).

18a. ______DU . . b. ______DU . . c. ______ . . d. ______% . .e. ______

f.

19a.

b. ______DU

20. _____ DU. Show all work on the following tables:

Date

.

.

Difference

.

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.

.

.

.

.

.

.

.

.

_________%

Date

.

.

Difference

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

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.

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.

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.

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.

.

.

.

.

.

.

.

.

.

_________%

21. Give two reasons why data verification is important.