GEOG 111 1st Edition Lecture 21 Outline of Last Lecture I Types of uplif a Convective lif i Stability of atmosphere II Review for Exam 2 Outline of Current Lecture I Most missed questions from exam 2 II Controls on the ELR and convection III Forced lif a Orographic lifing b Frontal lif c Low level convergence d Upper level divergence Current Lecture Most missed questions from Exam 2 6 The lapse rate is the rate of temperature drop with increasing altitude Which of the following situations is associated with the highest rate Clear day 16 What time of the year should a sea breeze be the strongest Spring 17 Surface winds over land blow at a 30 45 degree angle with respect to the isobars over a long distance 27 If the temperature of the air decreases the saturation vapor pressure will decrease and the vapor pressure will be unaffected 30 The 500 mb heights are greatest over the low latitudes I Controls on the ELR and convection a Daytime radiational warming i Lower tropospheric warming ii Bottom of column warms up b Nighttime radiational cooling i Lower tropospheric cooling ii Atmosphere becomes much more stable c Approaching 500 mb trough i Middle tropospheric cooling These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute ii More likely to get convection thunderstorms iii Unstable atmosphere d Approaching 500 mb ridge i Middle tropospheric warming e What is the stability of the atmosphere when there is an inversion i Air strongly resists moving in a vertical sense ii Atmosphere is completely stable iii We see inversions when there is warmer air alof iv Under ridges clear weather II Forced lif a Orographic lifing tends to be cloudier and more wet on wind ward side of a mountain range i Air lifs on one side of a mountain reaches its saturation level clouds precipitation form air sinks down the other side of the mountain warming and drying out as it goes down b Frontal lif i Two air masses with different densities that do not mix warm air moves up and over the cold air ii Two scenarios 1 Warm air is stable as warm air is forced upward it s cooling adiabatically and will eventually cool to saturation light precipitation 2 Warm air is unstable same except when air reaches saturation convection thicker clouds heavier rain thunderstorms c Low level convergence forced lifing i Converging at low levels in the atmosphere it needs an outlet must convect upward 1 Ex Clouds from the sea breeze front d Upper level divergence forced lifing i Opposite of convergence ii If air is pulling apart from itself eventually there will be no air lef in the area of divergence iii Accelerating winds exiting a trough cause air to rise 1 Forces air upward through the column
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