Lab 4A
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University of Houston Downtown *
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1304
Subject
Geography
Date
Dec 6, 2023
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docx
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2
Uploaded by ChiefHerringPerson172
1.Without an atmosphere, the equatorial curve would show minimum daily values on the solstices in
June when the sub-solar point is located at 23.5°N and in December when the sub-solar point is at
______ latitude.
b.23.5°S
2.The radiation curves represent equatorial, mid-latitude, and polar locations, whether on land or ocean.
According to the curves, the average daily solar radiation varies the most over the period of a year at the
______ location.
c.polar
3.The average daily solar radiation varies the least over the period of a year at the ______ location.
a.equatorial
4.The greatest average daily solar radiation occurs at the polar location during ______. A primary reason
why more daily sunlight is received during this month is because the length of daylight is 24 hours.
Another major factor is that, although relatively low in the sky compared to the Sun’s noontime position
at other Northern Hemisphere latitudes, this is the month when the Sun reaches its maximum altitude
above the horizon for the entire day.
b.June
5.The graph shows one location with six months of zero solar radiation. This period of continuous
darkness is at the ______ location. Check the sunrise/sunset table for this location at Link 4A-2.
c.polar
6.For each of the three curves, compare the annual range of solar radiation received (the difference
between maximum and minimum values). As latitude increases, the annual range of daily solar radiation
______.
c.increases
7.Note the positions of the equator and the 30°N and 30°S latitude lines. Figure 4A-2 shows that in
February the highest tropical Pacific Ocean SSTs are largely ______ of the equator.
a.south
8.In February the Pacific Ocean SSTs are highest in the ______ tropical Pacific.
b.western
9.On the other hand, Figure 4A-3 shows that by August the highest tropical Pacific SSTs are mostly
______ of the equator.
c.north
10.Using SST, how is heat moved from the equatorial region to the north Atlantic Ocean? (See Link 4A-4
for ocean currents.)
c.Gulf Stream current
11.Warm tropical ocean water (usually above 26°C) sustains hurricanes and tropical storms. Examine
Figure 4A-2 and Figure 4A-3. Which area is best suited for the storms to form?
d.Equatorial Atlantic Ocean in August
12.Where does the biggest SST difference occur between February and August? Focus on the areas near
180° longitude.
a.30°S
13.In both February and August, SSTs off the California coast are ______ SSTs at the same latitude off the
East Coast. This temperature contrast can be attributed to the southward flowing cold California Current,
coastal upwelling along the West Coast, and the northward flowing warm Gulf Stream along the East
Coast. We will visit all these topics in depth later on.
b.lower than
14. Compare the latitude positions of the 20°C isotherms in the two hemispheres at the two times of the
year. The orange belt of solar-warmed waters (20°C and higher) that straddles the equator is more
northerly in ______.
a. August
15.The same comparison of the two SST maps shows that the orange belt of solar-warmed waters (20°C
and higher) is more southerly in ______.
b.February
16.In both hemispheres, the orange belt where SSTs are 20°C or higher has its maximum poleward
location when that hemisphere is experiencing ______.
c.summer
17.In the middle and high latitudes, incoming solar radiation reaches its annual ______ during the
summer.
b.maximum
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