Weather & Global Climate Lab Practical on the ITCZ
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Arizona State University *
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Course
111
Subject
Geography
Date
Feb 20, 2024
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8
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Unit 5 Weather & Global Climate: Lab Practical on the
ITCZ (2 Points) Due
No due date
Points
2
Questions
4
Time Limit
None
Instructions
Attempt History
Attempt
Time
Score
LATEST
Attempt 1 (https://asu.instructure.com/courses/172892/quizzes/1298417/history?
version=1)
7
minutes
1.5 out of
2
Score for this quiz: 1.5
out of 2
Submitted Jan 20 at 3:37pm
This attempt took 7 minutes.
For this Lab Practical, you will be asked to find the Intertropical Convergence Zone (ITCZ) on satellite
imagery and use that to determine what season it is. For a review on this information, consult the
following reading: General Circulation Atmo & Oceans Ritter
(https://asu.instructure.com/courses/172892/files/77690596/download?wrap=1) (https://asu.instructure.com/courses/172892/files/77690596/download?download_frd=1)
Before you begin, take the time to review for one second. A great way to get the formation of storms, is to have strong convergence of moist air. As air
converges (and collides), it is forced upward (it certainly can’t go into the ground) and starts to cool. If
the air cools to the point of saturation, condensation occurs and clouds form. Recall, the ITCZ is a region
of converging air (very moist air) near the equator that circumvents the globe. Therefore, if we can
observe on satellite imagery long horizontal bands of clouds near the equator, then we can infer that to
be the current latitude of the ITCZ. Additionally, remember from the readings that the ITCZ moves north
or south from the equator as the season changes, and it is very close to the equator during the fall/spring
equinox. So, for this exercise, locate the ITCZ on satellite imagery (Look for long horizontal cloud
bands), and determine whether the image was taken during the Northern Hemisphere summer, winter, or
during an equinox. Hint: The difference between the latitude of the ITCZ and the equator may not be
very large, and it may help to focus on the cloud bands over Africa and South America. 0.5 / 0.5 pts
Question 1
Look at the satellite imagery, and determine what season it is by
identifying the latitude of the ITCZ.
Northern Hemisphere winter
Correct!
Correct!
Correct!
Correct!
Equinox Northern Hemisphere summer
This was taken in the Northern Hemisphere winter. The ITCZ is
represented by the black line, and the equator is represented by
the red line. Notice the ITCZ is located south of the
equator, therefore, this image was taken in the winter when the
temperatures are hotter in the Southern Hemisphere.
0 / 0.5 pts
Question 2
Look at the satellite imagery, and determine what season it is by iden±fying the la±tude
of the ITCZ.
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Northern Hemisphere summer
orrect Answer
orrect Answer
orrect Answer
orrect Answer
Northern Hemisphere winter
ou Answered
ou Answered
ou Answered
ou Answered
Equinox
This image was taken in the summer. The black line represents the
ITCZ. The red line represents the equator. The ITCZ is north of the
equator, therefore, this image was taken during the summer.
0.5 / 0.5 pts
Question 3
Look at the satellite imagery, and determine what season it is by
identifying the latitude of the ITCZ.
Northern Hemisphere winter
Equinox Correct!
Correct!
Correct!
Correct!
Northern Hemisphere summer
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There are two lines overlaid with each other. One line represents
the location of the ITCZ, and the other represents the location of
the equator. Because they are on top of one another, it suggests
that this photo was taken near one of the equinoxes.
0.5 / 0.5 pts
Question 4
For this question, we will not look at a satellite image. Instead, we are
going to look at a climograph for an undisclosed city. The blue bars represent
precipita±on for each month (01 = January, 02 = February, etc.) in millimeters (mm). The
red line cu²ng across the blue bars is temperature. Using this precipita±on record,
no±ce if there are any months that have dis±nctly less precipita±on than other months.
From there, use your knowledge about the seasonal behaviors of the ITCZ to determine
if this city is located in the Northern or Southern Hemisphere.
Northern Hemisphere
Southern Hemisphere
Correct!
Correct!
Correct!
Correct!
This is a climograph for Sao Paulo, Brazil, which is located in the
Southern Hemisphere. Notice that there is a lull in precipitation
during June, July, and August. The reason for this is that the ITCZ
shifts to the north during those months and precipitation totals
decline. Quiz Score: 1.5
out of 2