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<br />These data provide critical information for st.>edingdecision making. Each station is equipped <br />with the following sensors: <br /> <br />1. Temperature (Handar model 435A) <br />2. Relative humidity (Handar model 435A) <br />3. Wind speed (heated Handar model 430A) <br />4. Wind direction (heated Handar model 431A) <br />5. Icing trips (Hosemount model 872B) <br /> <br />Figure 2.2 is a photograph of the sensors mounted on a tower at one of the mountaintop <br />weather stations. The buildup of rime ice on the tower, caused by the presence of SWL, is <br />evident; the heated sensors are free of rime ice. <br /> <br /> <br />t~ <br />'. <br />... <br /> <br />" <br />" <br /> <br /> <br /> <br />~ <br />~ <br />. <br />. <br /> <br /> <br />\. <br /> <br />~-. <br />-- <br />- <br />- <br /> <br />~ <br /> <br />.- c1 <br /> <br /> <br />. . <br /> <br />~ <br /> <br />, <br /> <br />, <br /> <br />. <br /> <br /> <br />/ .: <br />, "':~L <br />~ ." ~~, <br />"~-l J ~j - <br />, I - ~ <br />.... ,i. , <br />j/;~',,, I <br />fj--~Jtj- <br /> <br />--- <br /> <br />- <br />".. <br /> <br />- <br />""-- <br /> <br />..., <br /> <br />Figure 2.2. - Environmental sensors mounted on lower at a mountaintop weather stalion. <br /> <br />6 <br />