Low Pressure Area
             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.

• Today I learned that-- low pressure area is a region where the atmospheric pressure at sea level is lower than that of surrounding locations
• i will apply my learnings about-- the occurrence of low pressure area.
• Learning about this phenomena is  important t because-- i will be aware about this phenomena and i can be ready if their will be a typhoon..
• On a larger scale, I will share my learnings about these phenomena to others-- so that not only me will be aware but also others.
• I need to know more about-- the effects of this phenomenon to my life.