Wednesday, February 12, 2014

Windrose Plot Lab

The purpose of this lab is to assess how the graphic the Wind Rose Plot tool is used to exhibit how wind speed and direction are typically distributed in a particular location. This lab will show the typical wind speed and direction of the station located at the Kansas City, Missouri International Airport in 1984.
 
This is the Wind Rose Plot shown below.
 
 
 
 
This is how it would look on the area recorded (International Airport-Kansas City, Missouri.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Shown below is the distribution graph of the class frequency winds.
 
 
 
 
 
By deductive reasoning, weather changes in the in the four seasons means wind speeds and direction differ in the spring, summer, fall and winter. Note the most frequent interval of speed and direction specific to each season.
 
Below is the Wind Rose Plot for February 11, 1984 (Winter).
 
 
Below is the Wind Rose Plot for May 3, 1984 (Spring).
 
 
Below is the Wind Rose Plot for August 24, 1984 (Summer).
 
 
Below is the Wind Rose Plot for November 7, 1984 (Fall).
 
 
 
 
In conclusion, Kansas City experiences most wind direction moving southward and the most frequently shown speed is between 11-17 knots, which is in the upper median of wind speeds given.

Friday, February 7, 2014

Solar Trajectory Lab

  
The objective of this lab is to learn how to gather data to make a solar trajectory determination. This lab also involves the idea of seasonality. For this lab, I went to study the 20ft pole in front of the Medical School building to see how long the sun cast the shadow on it during different times of the day. I recorded the physical direction of the shadow and also used the compass on my phone to figure out the exact degree of the direction. The materials we used for this lab were a ruler, a pole, compass, our lab notebook, SunCalc.net and a calculator.
 
The data table containing the information to make the graph is shown below.


 
 
Height of Pole
Time of Day
Length of shadow
Direction of shadow
Tangent  in decimal
Degree of shadow
Data point 1
20
9:00 AM
23 ft.
E
.86956
41
Data Point 2
20
11:15 AM
18 ft.
N-NE
1.11
48
Data point 3
20
12:00 PM
20 ft.
N
1
45
Data point 4
20
1:00 PM
23 ft.
N-NW
.86956
41
Data point 5
20
5:00
27 ft.
W
.7407
37
 
SunCalc.net version of the graph on 22nd of January, 2014 at the Medical School's flag pole used in the lab is shown below.
 
 
 
 
Below is the graph of the data points from January 22, 2014-January 30, 2014.