Heat dome (HD) is caused by the rapid change in ocean temperature from west to east.
05 July 2021 Current Affairs:Temperatures in the Pacific Northwest and parts of Canada reached 47 degrees, resulting in a "historic" heat wave. This is the result of a phenomenon called the "heat dome". Temperatures in the western Pacific Ocean have risen in recent decades and are now higher than those in the eastern Pacific.
Highlights:
♦ A heat dome is a high-pressure area that parks over a region, like a lid on a pot, trapping heat.
♦ The phenomenon begins with a significant change in ocean temperatures.
♦ Because of the gradient, more warm air heated by the ocean surface rises over the ocean surface (Convection).
♦ When the prevailing wind moves the hot air eastward, the northward movement of the jet stream captures the air and moves it to land, where it sinks, creating a heatwave.
♦ Heat dome (HD) is caused by the rapid change in ocean temperature from west to east.
♦ HD also prevents clouds from forming, allowing more Sun radiation to reach the Earth's surface.
♦ They are more likely to form during La Nia years, such as 2021 when the eastern Pacific is cool and the western Pacific is warm.
Highlights:
♦ A heat dome is a high-pressure area that parks over a region, like a lid on a pot, trapping heat.
♦ The phenomenon begins with a significant change in ocean temperatures.
♦ Because of the gradient, more warm air heated by the ocean surface rises over the ocean surface (Convection).
♦ When the prevailing wind moves the hot air eastward, the northward movement of the jet stream captures the air and moves it to land, where it sinks, creating a heatwave.
♦ Heat dome (HD) is caused by the rapid change in ocean temperature from west to east.
♦ HD also prevents clouds from forming, allowing more Sun radiation to reach the Earth's surface.
♦ They are more likely to form during La Nia years, such as 2021 when the eastern Pacific is cool and the western Pacific is warm.