Help with question 19, 20, 21 19. Air should rise in areas of warm-air advection

Question

Help with question 19, 20, 21

19. Air should rise in areas of warm-air advection and sink in areas of cold-air advection. Based on these criteria, describe the direction (up or down) and location of vertical motion with respect to the surface warm and cold fronts.

20. How does the area of warm-air advection and upward vertical motion help explain the precipitation pattern found on the November 10, 1200z, surface map?

21. Highlight the 0-degree isotherm. Does it conform to the rain-snow boundary seen on the surface map for November 10, 1200z?

I'm so confused about the fronts right now and please help me out! Your answer will be highly appreciated!

Upper-Air Analysis Of course, we must consider air flow above Earth's 18. Circle and label areas of warm-air and cold-air advec- tion on the November 10, 1200z, 850-mb map. surface to understand why mid-latitude cyclones produce precipitation. Upper-air maps, produced every 12 hours, 19. Air should rise in areas of warm-air advection and sink help us understand the relationship between surface weather and upper-level circulation. in areas of cold-air advection. Based on these criteria, describe the direction (up or down) and location of vertical motion with respect to the surface warm and cold fronts. 850-mb Examine the November 10, 1200z, 850-mb map (Figure 8-12), showing wind flow and temperature patterns dur- ing the storm at approximately 1.5 km above sea level. The solid lines are contours, indicating constant height. The dashed lines are isotherms-lines of constant temperature that help us identify frontal boundaries above Earth's sur- face. When mapped together, contours and isotherms can help us identify areas of warm-air advection and cold-air advection. If we assume that winds flow parallel to contour lines, then we can find such areas where the winds blow across isotherms. 20. How does the area of warm-air advection and upward vertical motion help explain the precipitation pattern found on the November 10, 1200z, surface map? 21. Highlight the 0° isotherm. Does it conform to the rain-snow boundary seen on the surface map for November 10, 1200z? 1410 1350 1380 1410 1440 .19, 1419 1380 1350 1380 1500 1380 1630 1290 1410 1440 1470 0" 1580 1500 1590 1612 10 530 1590 1518 15" Figure 8-12. 850-mb map, November 10, 1200z.

Explanation / Answer

19. Air should rise in areas of warm-air advection and sink in areas of cold-air advection. Based on these criteria, the direction of the warm front is from southwest towards the northeast. the air behind warm front is more warmer and moist than the air ,so its become lighter and raised towards upside from the surface.

the direction of the cold front is from northwest towards the southeast. the air behind cold front is more cooler and drier than the air ,so its become lighter and raised towards upside from the surface.

20. warm-air advection can occur at the surface aloft when wind flows enough from warm air region to cooler air region.it has given enough lift and upward vertical motion and moisture will result in precipitation.

21.  the 0-degree isotherm , the rain-snow boundary should have seen on the surface map for November 10, 1200z.because at  0-degree isotherm which is freezing point of water and it allows reflection of sun by snow.

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