Intensity of Solar Radiation Intensity of Solar Radiation is a relative measurement. We know that a Sub Solar Point (SSP) is a latitude where the Sun's rays are directly vertical (ANS-90°) over a defined Latitude, therefore, receiving the most intensity heating on the Earth's surface. A SSP will take in 100% of the Sun's rays hitting the Earth's surface and we will measure that in Watts/Meter at the end of this lab. As you move away from a SSP, the angle in which the Sun's rays hit the Earth (ANS) will decrease. As the ANS decreases, so will the percentage of the Sun's rays received at the Earth's surface. We will explain this at the end of the lab. In order to calculate the percentage of the Sun's rays received, relative to a SSP, we use the equation: Solar Intensity (SI) = Sin (ANS) For example: ANS-90° we know that is a SSP SI= SIN (90) SI=1 SI-100% as expected for a SSP. But what if the ANS=300? SI-Sin (30) SI= .50 SI= 50% Make sure your calculator is in DEGREE mode-not Radian! With an ANS of 300, the Latitude would only receive 50% of the Sun's rays RELATIVE to a SSP. 6. Using the ANS from questions 2 and 3 above, calculate the intensity of solar radiation (SI) for the following? May 5th January 6th March 21st Your Birthday 75°N 80°S 25°N 52°S A negative answer means the sun never rose above the horizon. Answer the following questions using the Analemma at to the back of this lab. 1. Using the Analemma, determine the Sub Solar Point (SSP) for the following dates. (N or S) 5.88°N January 21 N=21-20.18's April 6th (N=96 20.57°S November 22nd N-326) May 10th (N = 130) - 17.44°N 2. What is the noon sun angle (ANS) for the following dates, for a location of 38°N? 90-(38-623) 90-38-23.5) May 5th 67°3 B-15)= March 21st 52° (38-0)= January 6th 115° Your Birthday 5.50 3. What is the noon sun angle (ANS) for the following Latitudes on June 1st? 75°N 37° 80°S 32° 25°N 870 52°S 4. What is the angle of the noon sun as seen from JJC? 5. Today, what is the Latitude of the sub solar point? (THINK!)
Intensity of Solar Radiation Intensity of Solar Radiation is a relative measurement. We know that a Sub Solar Point (SSP) is a latitude where the Sun's rays are directly vertical (ANS-90°) over a defined Latitude, therefore, receiving the most intensity heating on the Earth's surface. A SSP will take in 100% of the Sun's rays hitting the Earth's surface and we will measure that in Watts/Meter at the end of this lab. As you move away from a SSP, the angle in which the Sun's rays hit the Earth (ANS) will decrease. As the ANS decreases, so will the percentage of the Sun's rays received at the Earth's surface. We will explain this at the end of the lab. In order to calculate the percentage of the Sun's rays received, relative to a SSP, we use the equation: Solar Intensity (SI) = Sin (ANS) For example: ANS-90° we know that is a SSP SI= SIN (90) SI=1 SI-100% as expected for a SSP. But what if the ANS=300? SI-Sin (30) SI= .50 SI= 50% Make sure your calculator is in DEGREE mode-not Radian! With an ANS of 300, the Latitude would only receive 50% of the Sun's rays RELATIVE to a SSP. 6. Using the ANS from questions 2 and 3 above, calculate the intensity of solar radiation (SI) for the following? May 5th January 6th March 21st Your Birthday 75°N 80°S 25°N 52°S A negative answer means the sun never rose above the horizon. Answer the following questions using the Analemma at to the back of this lab. 1. Using the Analemma, determine the Sub Solar Point (SSP) for the following dates. (N or S) 5.88°N January 21 N=21-20.18's April 6th (N=96 20.57°S November 22nd N-326) May 10th (N = 130) - 17.44°N 2. What is the noon sun angle (ANS) for the following dates, for a location of 38°N? 90-(38-623) 90-38-23.5) May 5th 67°3 B-15)= March 21st 52° (38-0)= January 6th 115° Your Birthday 5.50 3. What is the noon sun angle (ANS) for the following Latitudes on June 1st? 75°N 37° 80°S 32° 25°N 870 52°S 4. What is the angle of the noon sun as seen from JJC? 5. Today, what is the Latitude of the sub solar point? (THINK!)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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Transcribed Image Text:Intensity of Solar Radiation
Intensity of Solar Radiation is a relative measurement. We know that a Sub Solar Point (SSP) is
a latitude where the Sun's rays are directly vertical (ANS-90°) over a defined Latitude,
therefore, receiving the most intensity heating on the Earth's surface. A SSP will take in 100% of
the Sun's rays hitting the Earth's surface and we will measure that in Watts/Meter at the end of
this lab.
As you move away from a SSP, the angle in which the Sun's rays hit the Earth (ANS) will
decrease. As the ANS decreases, so will the percentage of the Sun's rays received at the Earth's
surface. We will explain this at the end of the lab.
In order to calculate the percentage of the Sun's rays received, relative to a SSP, we use the
equation:
Solar Intensity (SI) = Sin (ANS)
For example:
ANS-90° we know that is a SSP
SI= SIN (90)
SI=1
SI-100% as expected for a SSP.
But what if the ANS=300?
SI-Sin (30)
SI= .50
SI= 50%
Make sure your calculator is in DEGREE mode-not Radian!
With an ANS of 300, the Latitude would only receive 50% of the Sun's rays RELATIVE to a
SSP.
6. Using the ANS from questions 2 and 3 above, calculate the intensity of solar radiation (SI) for
the following?
May 5th
January 6th
March 21st
Your Birthday
75°N
80°S
25°N
52°S
A negative answer means the sun never rose above the horizon.
Answer the following questions using the Analemma at to the back of this lab.
1. Using the Analemma, determine the Sub Solar Point (SSP) for the following dates. (N or S)
5.88°N
January 21 N=21-20.18's
April 6th (N=96
20.57°S
November 22nd N-326) May 10th
(N = 130)
- 17.44°N
2. What is the noon sun angle (ANS) for the following dates, for a location of 38°N?
90-(38-623)
90-38-23.5)
May 5th
67°3
B-15)=
March 21st 52°
(38-0)=
January 6th
115°
Your Birthday 5.50
3. What is the noon sun angle (ANS) for the following Latitudes on June 1st?
75°N
37°
80°S
32°
25°N
870
52°S
4. What is the angle of the noon sun as seen from JJC?
5. Today, what is the Latitude of the sub solar point? (THINK!)
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