3 ms·
No, they are neither objective nor dispassionate, despite being grounded in empirical data and methods. Factors like building shade, vehicle density, wind cove
by mistercheph 3y ago
No, they are neither objective nor dispassionate, despite being grounded in empirical data and methods.
Factors like building shade, vehicle density, wind cover, terrain, cloud coverage, and variations in humidity, mean that thermometers placed at different points in any selected area will report massive variations in temperature, and the naive (and impossible) approach of even distributions of identical sensors taking measurements at the same clock times placed across some given weather area will yield numbers that are not helpful for most people.
For example, about 1/3 of the area of Burbank, CA is recreation and park spaces that are in the verdugo mountains, at their highest point within Burbank limits 1800 ft. above sea level, and with almost zero residents. The other 2/3 of Burbank are about 600 ft. above sea level. How would you offer a number that summarized the weather in Burbank?
Imagine factoring time into this. There is no temperature of the hour, there are individual measurements taken at specific moments in time in specific places, using differing methodologies, different equipment, variations in MoE, and at varying frequencies. Put all this together, and the work of the observational meteorologist to produce daily or hourly temperature averages becomes extremely complicated, and the first question they would ask is, "What will the averages be used for?"
Here are some examples from the large literature on these problems:
https://www.tandfonline.com/doi/full/10.1080/07055900.2015.1135784 https://www.tandfonline.com/doi/full/10.1080/07055900.2015.1...
https://www.sciencedirect.com/science/article/abs/pii/S0022169496031289 https://www.sciencedirect.com/science/article/abs/pii/S00221...
https://link.springer.com/chapter/10.1007/978-1-935704-35-5_14 https://link.springer.com/chapter/10.1007/978-1-935704-35-5_...
- crazygringo 3y agoYou make a good point that the phone isn't (usually) reporting a direct measurement, but is rather interpolating weather station temperatures for a single coordinate. (And cities generally have a single lat/lon "center" for weather reporting, although your iPhone will attempt to report the weather for your location rather than the nearest city's center.) But nevertheless, a correct, objective, dispassionate temperature reading for that coordinate does exist in reality. And the phone's weather service is trying to approximate that as closely as possible. And you can objectively measure the error to improve future models. My point is still that this is qualitatively different from composite air quality indexes, which are politically designed, and therefore designed differently for different countries.