Time period entered twice, different data.

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  • Updated 4 years ago
Hi, I'm trying to compare air pollution data and weather data. I finally realized the data doesn't match because my weather data for Beijing often has the same time period, ie. January 1, 2013 8:00 am twice with different data, so I can't sync up the weather data with the air pollution data from the State Department. How do I know which data to use for each time period?
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enviroeberhardt

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  • frustrated

Posted 4 years ago

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Brendan Hayes, Official Rep

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Some stations can make double entries. What are the URL(s) you are hitting?
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enviroeberhardt

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The main station I'm interested in is ZBAA. I figured that the lines with the least number of -9999 were the most accurate, since I guessed -9999 was an error message or lack of info.
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Brendan Hayes, Official Rep

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Ignore the lines that have a metar value that begin with "AAXX" like this one:

metar: "AAXX 14181 54511 32965 92501 10139 20015 39971 40009 57025 333 10229"

We get weather in different style reports and combine them by date. Sometimes that results in it looking like we have 2 entires for the same time. In those cases, you want the METAR and not the AAXX