The atmosphere is typically most unstable _____.

Question

The atmosphere is typically most unstable _____.

BlackTom AI · Accepted Answer

In atmospheric stability questions, the level of instability is tied to surface heating and the energy input from the sun. 
Option 1: during the mid/late afternoon. This period typically experiences the strongest surface heating as solar radiation peaks, which heats the boundary layer, reduces stability, and promotes convective mixing. Therefore, the atmosphere is most unstable then. 
Option 2: around midnight. After sunset and through the night, the surface cools, the air near the ground becomes more dense, and stability generally increases, reducing convection. This makes midnight the least unstable of the options. 
Option 3: just after sunrise. While surface heating begins after sunrise, it takes time to build to peak; just after sunrise the boundary layer is not yet as destabilized as in the afternoon. Hence, instability is rising but not at its maximum yet. 
Option 4: during mid morning. By mid morning, there is more heating than early morning, but it still has not reached the intense heating of the mid to late afternoon, so instability is significant but not maximal. 
Taken together, the statement that best captures the period of greatest instability is the mid/late afternoon, when solar input is strongest and convective activity peaks.

WX 301 WX301 Fall 2025 Exam 2 - Requires Respondus LockDown Browser

The atmosphere is typically most unstable _____.

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WX 301 WX301 Fall 2025 Exam 2 - Requires Respondus LockDown Browser

The atmosphere is typically most unstable _____.

查看解析

登录即可查看完整答案

类似问题

If an atmosphere is stable to convection, it means a rising air parcel will be (choose all correct answers):

Radiative equilibrium temperature profile is stable to convection.

Radiative equilibrium temperature profile is unstable to convection.

A conditionally unstable atmosphere is ____ with respect to unsaturated air and ____ with respect to saturated air.

Radiative equilibrium temperature profile is stable to convection.

If the temperature of the air outside the parcel at the summit of Pike Peak is -20°C. What will happen to the parcel when it is released at the summit?

Pikes Peak has an elevation of 4302 m. If a parcel of air at the top of Peaks Peak has a temperature of -17°C and a relative humidity of 85%. If the temperature in Denver (elevation 1609 m) is 18°C the layer of atmosphere between Denver and Pikes Peak is:

In a consumer society, many adults channel creativity into buying things

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A conditionally unstable atmosphere is with respect to unsaturated air and with respect to saturated air.