China Naming Network - Weather knowledge - What forces affect upper-altitude winds?

What forces affect upper-altitude winds?

Answer:

1. High-altitude wind: only affected by the geostrophic deflection force, so the final wind direction is parallel to the isobars; near-surface wind: affected by the geostrophic deflection force and friction. The wind direction is oblique to the isobars.

2. The temperature of the troposphere becomes lower as it goes up, because the temperature source of the troposphere is ground radiation; the temperature of the stratosphere becomes higher as the heat comes from solar radiation.

3. Decreasing from the equator to the poles.

Direction: The horizontal pressure gradient force points from high pressure to low pressure. The geostrophic deflection force deflects the northern hemisphere to the right and the southern hemisphere to the left, perpendicular to the wind direction

The friction force direction is opposite to the wind direction. The high-altitude wind direction is parallel to the isobars. First find the low pressure and high pressure, then draw the horizontal pressure gradient force, and then draw the wind direction according to the geostrophic deflection force (within 90 degrees of deflection angle).

High-altitude wind

It can also be detected using the same method as surface wind by installing wind measuring instruments on space-based platforms. However, detection is usually based on the trajectory of tracers moving with the air, or the Doppler effect is used for remote sensing detection.

Balloon wind detection is to regard the balloon as a particle moving in the air flow, use instruments to measure the spatial coordinate position of the balloon relative to the observation point, and determine the spatial position and movement trajectory of the balloon; according to the position of the balloon in a certain period of time Changes in its internal position are calculated, and its horizontal displacement is calculated to calculate the average wind direction and speed in the corresponding atmosphere.