It's the theoretical pressure daily oscillation, not related to weather conditions, caused by the sun and by the moon.
Comparing it with measured pressure the weather trend can be estimated.
It's more significative in tropical and equatorial areas so, if you are at bigger latitudes, it may appear quite flat to you.

You can learn more from wikipedia.


This website uses cookies, including those of third-parties, to offer you the best possible user experience in keeping with your preferences.
By clicking on the "I Agree" button, you consent to the use of cookies. If you would like to learn more or opt out of all or some cookies, click here.