Mauna Kea Weather Data

The VLBA makes weather data from the MK site available for download from https://ops.vlba.nrao.edu/mkweather/current.mk.weather . This is at the request of the University of Hawaii which operates a weather center specific to the summit of Mauna Kea. This web page is updated every 15 minutes by a cron job run by user vlbamon on computer elbow. The cron job runs a bash script /users/vlbamon/vlba/bin/mk.weather which in turn runs db2wx which places a text file with recent weather data into /home/ops.vlba.nrao.edu/content/mkweather . Both the bash script and db2wx are maintained in the nraodifxdb repository. Both db2wx and mk.weather should be executable for proper functionality. Note that the cron entry is updated with crontab -e . The entry for this service should look like:

*/15 * * * * /bin/sh /users/vlbamon/vlba/bin/mk.weather > /dev/null

The data file presented contains the following space-separated columns of data:

Column Value Units
1 Antenna name  
2 Modified Julian Days UTC days
3 Temperature C
4 Pressure mBar
5 Dew Point C
6 Wind speed m/s
7 Wind direction Deg E of N
8 Rainfail cm since midnight
9 Wind gust m/s

-- WalterBrisken - 2021-04-13
Topic revision: r3 - 2021-04-18, WalterBrisken
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