A common example of this is when someone opens a carbonated beverage. High barometric pressure supports sunny, clear, and favorable weather conditions, but lower levels promotes rainy and cloudy weather conditions. This atmospheric parameter has been used for hundreds of years to forecast weather conditions. Differences in barometric pressure over large inland lakes can produce seiches, which affect water levels in the lake and adjoining estuaries.
Barometric pressure is typically reported in inches of mercury or in millibars. Inches of mercury is the traditional way of reporting air pressure. Greater air pressure pushes a column of mercury higher in a barometer. About Beamex blog Beamex blog provides insightful information for calibration professionals, technical engineers as well as potential and existing Beamex users. Subscribe to Email Updates. Recent Popular Categories Improving efficiency and ensuring compliance in the pharmaceutical industry posted at Oct 05, Pressure Calibration [eBook] posted at Jun 22, The Evolution of Calibration Documentation posted at May 20, Manual Data Entry Errors posted at Mar 25, How to choose a calibration laboratory - 13 things to consider posted at Feb 23, How to calibrate a temperature switch posted at Dec 02, Temperature Calibration Webinars posted at Sep 23, Sustainability in Energy from Waste posted at Aug 11, Sanitary temperature sensor calibration posted at Jun 23, Pressure units and pressure unit conversion posted at Feb 08, Pt temperature sensor — useful things to know posted at Apr 17, Weighing scale calibration - How to calibrate weighing instruments posted at May 16, Temperature units and temperature unit conversion posted at Feb 21, How to calibrate temperature sensors posted at Aug 27, Measurement Uncertainty: Calibration uncertainty for dummies - Part 1 posted at Nov 02, How to calibrate pressure gauges - 20 things you should consider posted at Apr 05, In space, there is a nearly complete vacuum so the air pressure is zero.
On Earth, because there are many miles of air molecules stacked up and exerting pressure due to the force of gravity , the pressure is about Why might that be? If you've read How Hot Air Balloons Work , you know that hot air is less dense lighter than cooler air. And that would be true.
These same sort of pressure differences occur all over the planet for various reasons. These pressure differences have a big effect on the weather, so if you know the current air pressure at your house, as well as the pressure trend, you are able to predict certain things about the weather.
As a very loose rule, a high-pressure area will be clear, and a low-pressure area will be cloudy and rainy. Sign up for our Newsletter! Many research and development labs will use barometers to measure the barometric pressure at one facility then use that data to replicate the exact same environment at another research lab. For example, when testing at a lab in Colorado versus one in New York, the barometric pressure can be significantly different, therefore affecting the results of the test or experiment.
A more accessible example on the effects of atmospheric pressure is baking. Because the rate in which fluids evaporate changes with high or low pressure, cooking times and durations need to be adjusted at higher elevations. Stability and accuracy are the most important aspects of a barometric pressure sensors. These devices are often used on remote weather stations and data buoys where routine recalibrations are simply not practical.
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