Local wind systems are primarily generated by differential heating which results

Question

Local wind systems are primarily generated by differential heating which results in a pressure gradient. Consider a lake near a mountain as illustrated in the following diagram: Plot the pressure fields and the associated atmospheric circulation at nighttime. Assume no background wind. Here one needs to plot the atmospheric circulation on both the east and west sides of the mountain. Now assume that a strong easterly wind is blowing near the surface; and the wind speed is ~15 m/s over the lake. Plot the surface wind fields (or local circulation). Identify the possible location of surface wind convergence and the where clouds may form. Assume that all precipitation, if any, occurs on the east side of the mountain. If the conditions are the same as in b), would the surface temperature be warmer at D or at B? Explain your reasoning.

Explanation / Answer

answer 1- figure a during night time when no wind is blowing over lake and montain area, in this time land is cooler than lake. the lakes would be warmer so the low pressure region would be developed there and at mountain would be cold so high pressure region would be developed there.

answer 2- in this situation wind is blowing from easterly direction and there would be zone on convergence of wind on the east side of mountain high wind speed zone create on the easter flank of mountain and speed is relatively low in centre and western part of mountain.

answer 3 assume that precipitation occur on easter side of mountain the surface temperature of D would be higher than B because at point b there is convergence of 2 winds so the surface temperature would be low.

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