Week 4

Apr 03, 2022

This week I continued to gather data for the contrail catcher project. I had a few questions that arose while recording data, most notably how to find relative humidity and temperature data at a specific altitude. Amy had recommended that I check the aviation weather center website to find this data, however, I had some difficulties finding this data as the website is somewhat unintuitive. I asked her again in this week’s meeting and she showed me how to find it and read it as well. The data is presented in a 6 digit number such as 275954. The first 3 digits represent the direction of the wind in degrees, the 4th number represents the wind speed in knots and the last 2 numbers represent temperature (of course at 34000ft the air temperature is negative). After figuring out to read this data I found a potential problem with the data available, the nearest airport where this data is available in Richmond. I asked Amy about this and she said that it was fine so I continued to use this data. While taking pictures I also observed that it is really helpful to have a high-resolution telephoto camera as taking pictures of an aircraft at 34000 ft with a wide angle lens does not produce great results. Because of this, I switched to using my old Samsung Galaxy Note 9 for taking photographs as it has a 2x telephoto lens as my iPhone 13 does not.

Another problem that I faced was that I could not find data for finding relative humidity. I tried to circumnavigate it by calculating relative humidity in excel using the August-Roche-Magnus approximation. This equation relied on temperature and dew point to find the value of relative humidity. Amy actually had this same issue a month or two ago and sent me an equation that Dr. Sherry sent her alongside a paper explaining it. This equation relied on altitude which was a data point that I had access to. In the coming weeks, I expect to continue gathering data for this project. See you next week!

4 Replies to “Week 4”

  1. Sophie P. says:

    Hi Kaan! It sounds like this project has required a lot of problem-solving, and that you have effectively figured out how to tackle these problems by yourself or by asking for help from a mentor…. also looks like you found one thing that your Samsung is better for than your iPhone! I am curious, are you gathering your own data for this project or using data that has already been collected?

  2. Mohan L. says:

    Wow, I never knew that the camera resolutions were so important to data collecting, your explanation of how to interpret the data was also quite helpful. I look forward to seeing your progress next week!

  3. Rodrigo G. says:

    Hey Kaan!

    Impressive to see you using your absolute genius to get around issues in the best way possible, as you have throughout your project! Whether it be equations or camera issues, you found a way.

    More excited than ever to see your final product!

    – Rodrigo

  4. Neil B. says:

    Hello Kaan. I find this very interesting, seeing how you have overcome this challenge that you faced. It’s quite fascinating (and slightly confusing since I have no experience with what you are talking about) to read about how you solved these problems. Good luck with all future research!

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