Team1 HalmSunMinor

Rising motion Sinking Motion

Rising motion Sinking Motion

Rising motion Sinking Motion

Rising motion Sinking Motion

WAA CAA WAA

6. We drew in the rising and sinking motion on our graphs. When the pressure advection is positive the air should be sinking. When the pressure advection is negative the air should be rising. Our analysis showed that cloudy areas are associated with rising motion and clear areas are associated with sinking motion. From the isentropic analysis we can see that there is rising motion in Texas and the satellite images confirm that there are clouds where the rising motion occurs. Our isentropic analysis also showed sinking motion from Iowa to Tennessee and this region is clear. We found disagreement in our analysis around the pacific southwest coast line. The map shows sinking air here and a cloud in the region of sinking air. This cloud may exist because of the moisture from the ocean. We drew in the WAA and CAA on our 900 and 850mb maps. The relative humidity regions on the isobaric maps corresponded to the rising motion in our isentropic analysis. 7. From the analysis, we can conclude that rising motion corresponds to the negative pressure advection regions in the isentropic maps, and sinking motion corresponds to the positive pressure advection regions in the isentropic maps. The rising motion is often associated with the cloud fields. In the isobaric maps, we can see that the warm air advection is usually associated with the rising motion, and the cloud fields. On the isobaric maps, it is hard to see the motion of the water in the atmosphere, whereas on the isentropic maps we can see that the air becomes more saturated as it rises.

CAA WAA CAA

4. The air ascends from the ground until it reaches the 850mb level in the area of WAA. In the area of cold air advection, air has descended from approximately 500mb until it reaches the 850mb level. For the analyzed time, air at the 850mb surface will continue to rise until it reaches the 700mb level at which point it will level out. It appears that descending air in the CAA region will level off around 850mb. 5. This system is not predicted to produce much precipitation because the relative humidity at the surface is very low. Only dry air will be lifted so not much precipitation will fall. 6. In both maps the wind is blowing parallel to the contours. A noticeable difference between the maps is that on the 850mb from Wisconsin the winds slow down a lot as they flow through the ridge over Indiana and Ohio and speed up once again over Virginia and the Carolinas and on our isentropic map the winds do not slow down much when flowing through the ridge and speed up a little as the wind pass it. That is because the height of isentropic map and isobaric map is different in these regions.