LOW-PRESSURE AREA

• Today I learned that A low-pressure area, low or depression, is a region where the atmospheric pressure at sea level is lower than that of surrounding locations. Low-pressure systems form under areas of wind divergence which occur in upper levels of the troposphere. The formation process of a low-pressure area is known as cyclogenesis. Within the field of atmospheric dynamics, areas of wind divergence aloft occur in two areas. The first area is on the east side of upper troughs which form half of a Rossby wave within the Westerlies (a trough with large wavelength which extends through the troposphere). A second area of wind divergence aloft occurs ahead of embedded shortwave troughs which are of smaller wavelength. Diverging winds aloft ahead of these troughs cause atmospheric lift within the troposphere below, which lowers surface pressures as upward motion partially counteracts the force of gravity.
• I will apply my learnings about low-pressure area in order for me to be aware about the effects of the low-pressure area.
• Learning about low-pressure area is important because I can be knowledgeable, ready and prepared.
• On a larger scale I will share my learnings to others for them to know what my learnings about low-pressure area.
•  I need to learn more about low-pressure area because it is a phenomenon that affects everyone including ME :).