This depends on the altitude of this valley; generally is higher.
Air pressure in a valley below sea level would be higher than at sea level. This is because the weight of the air column above is greater in the valley due to the higher density of air molecules compressed into a smaller volume.
I would expect it to be lower.
I would expect it to be lower.
I would expect it to be lower.
I would expect it to be lower.
Air pressure in Death Valley would be higher than air pressure at the beach because air pressure decreases with increasing elevation. Death Valley is located at a low elevation, while the beach is typically at sea level.
Death Valley, located in California's Mojave Desert, is known for its extreme conditions, including low air pressure. The valley's elevation, which is below sea level, contributes to higher air pressure compared to higher altitudes. However, due to the extreme heat, the air can become less dense, resulting in lower pressure readings. Overall, while Death Valley's elevation suggests relatively higher pressure, the heat and environmental conditions can lead to variations in air density and pressure.
Air pressure in Death Valley is higher than on top of a mountain because Death Valley is situated below sea level, creating a denser column of air above it. In contrast, mountain tops have less air above them, leading to lower air pressure. The weight of the atmosphere decreases with altitude, so locations at higher elevations naturally experience lower air pressure. Thus, the elevation difference directly impacts the pressure experienced at these locations.
Below sea level atmospheric pressure increases with depth. Air pressure at sea level is about 14.7 psia. Air pressure below sea level would be slightly higher.
water at sea level has higher vapor pressure
Assuming you are talking about air pressure, atmospheric pressure is created by the weight of the air resting against the earth. the higher up you go, the less air stacked on top of itself, and the pressure is less, until there is no more air at all (space). The pressure of air at sea level is relatively the same around the world because of all the water flows to the same level. this obviously changes with storms and hurricanes - as those move some of the air out of the way. So if you were to go below sea level, there would be more air on top of you, and the pressure would be higher. In death valley (well below sea level) the atmospheric pressure is much higher than at sea level. To answer the question, No, pressure is not negative below sea level. It is greater than at sea level.
Air is denser at lower altitudes and less dense at higher altitudes. If the bottom of the valley is directly below the mountain, at a lower altitude, then there is technically more air in the valley.