Mgr.Pavol Trubac

Does the barometer sensor data suggest a correlation between solar radiation, rain rate and air temperature and how do you explain it?

Atmospheric pressure (other names: air pressure, barometric pressure) is the pressure caused by the atmosphere of the planet Earth. This pressure is caused by the weight of the air column extending from the altitude at which the pressure is measured to the upper limit of the atmosphere.

Atmospheric pressure is the pressure of the mass of air in the atmosphere conditioned by the gravitational action of the Earth. The normal value of atmospheric pressure (value determined for physical calculations) at sea level is 101 325 Pa, we speak of the average pressure. The atmosphere layer (mass of air molecules in a column) of the Earth exerts a compressive force on the earth’s surface. The value of this pressure is greatest on the earth’s surface and decreases with increasing altitude. The barometric pressure is not constant, it constantly fluctuates at a given point on the earth’s surface around a certain value. In addition to altitude, air pressure and airflow also affect air pressure.

Our weather station reports the pressure in hPa or in hectopascals,

Thus, the average pressure is 1013 and a quarter hPa.

The pressure is higher when the air pressure is in the range of 1020 to 1060hPa. Lower when less than 1000hPa.

Correlation means correlation. We will create so-called correlation graphs. This means that with our program we create dynamic images in which there can be multiple graphs such as pressure, temperature, sunshine or precipitation.

We will use these correlation graphs to search for certain meteorological laws.

For example

Nice stable weather can be expected if:

• the pressure rises slowly and evenly or is unchanged
• the pressure rises for several days
• pressure rises in strong winds
• small pressure fluctuations are repeated daily

We can expect a worsening of the weather if:

• the pressure drops below 1,000 hPa.

Rain, storms can be expected if:

• the pressure drops rapidly
• the pressure drops for a long time
• at high temperatures, the pressure drops to normal
• if there is no pressure after the storm, a new storm will come
• the most common storms come at a pressure of around 1013.3 hPa

Based on these facts, we can formulate tasks for students

1. In the given correlation graph, find the time frames where the correlation between pressure and temperature applies
2. In the given correlation graph, find the time frames where the correlation between pressure and solar radiation applies.
3. In the given correlation graph, find the time frames where the correlation between pressure and precipitation applies
4. The weather station cannot detect clouds at night. However, based on previous experience and facts, we would be able to formulate approximate hypotheses …. try