5B. Please answer questions, need help THANK YOU! 1. Figure 1 is the surface wea
ID: 116180 • Letter: 5
Question
5B. Please answer questions, need help THANK YOU!
1. Figure 1 is the surface weather map for 16Z 26 SEP 2017. Little Rock, Arkansas, had a temperature and dewpoint of 82°F and 69°F, respectively. Denver, Colorado, had both a temperature and dewpoint of 50°F and 42°F, respectively. Little Rock’s weather was under the influence of a warm air mass whose high-pressure center was marked by an H in Pennsylvania, and ahead of the advancing cold front. The air over Colorado was ________ than that over Little Rock.
[ ] cooler and had more water vapor
[ ] cooler and had less water vapor
[ ] warmer and had less water vapor
[ ] warmer and had more water vapor
In addition to observing weather conditions at the surface from a large number of stations, the radiosonde network (introduced in Investigation 2B) takes observations, albeit at fewer sites, through the depth of the troposphere and the lower stratosphere. Radiosonde data can be employed in a variety of ways to provide meteorologists with powerful analytical tools. Data at various atmospheric levels above a station can be plotted as the radiosonde profile on a Stuve diagram as you did in Investigation 2B. Here, we consider atmospheric temperature and pressure conditions above two stations: Denver, Colorado, within a column of cool air, and Little Rock, Arkansas, which was experiencing warmer conditions to the south and east. Radiosonde observations at 1200Z 26 SEP 2017 (170926/1200) from Denver (DNR) and Little Rock (LZK) are plotted on Stuve diagrams shown in Figure 2 and Figure 3, respectively. You may wish to print these soundings for comparison and highlight the temperature profiles (heavy solid, black plotted curves to the right in the Stuve diagrams) for each station.
2. The plotted temperatures and dew points in Denver begin much higher on the chart than Little Rock. The reason for the difference is that Denver, the “mile-high” city, is at a much ________ elevation than Little Rock. This means the launched balloon at Denver cannot obtain data for all the same pressure levels as Little Rock.
[ ] lower
[ ] higher
3. Comparing the two temperature profiles, the atmosphere from 700 mb to about 250 mb was cooler above ________. (Hint: This can be best seen by quickly toggling back and forth between Stuves using image-viewer software)
[ ] Denver
[ ] Little Rock
Table 1 lists a portion of the text data from the two radiosonde observations (complete data for the most recent soundings are available from the RealTime Weather Portal section, Upper Air, “Upper Air Data - Text”). The pressure levels given below are the so-called “mandatory” levels reported in each station’s sounding, which includes the surface. The data are presented with the highest pressures at the bottom, as is found in the atmosphere.
Table 1. - Rawinsonde observations of pressure, temperature and altitude from Denver, Colorado and Little Rock, Arkansas at 1200Z 26 SEP 2017.
4. Compare the altitudes of the following pressure levels from the two soundings. The following pressures were at higher altitudes over Little Rock than over Denver: ________
[] 700 mb
[] 500 mb
[] 400 mb
[] 300 mb
[] 250 mb
[] 100 mb
[] allofthese
5. Constant-pressure “surfaces” are those that can be imagined as undulating surfaces in the atmosphere on which the air pressure is the same (for example, the 500-mb surface). Comparing the altitudes of each of the pressure surfaces from 700 mb to 100 mb indicates that individual constant-pressure surfaces slope from their altitudes in the generally warmer air over Little Rock ________ to their altitudes in the cooler air over Denver.
[ ] downward
[ ] upward
6. Assume you wish to fly from Denver to Little Rock at a 31,000-foot altitude (approximately 9400 m a typical altitude for commercial aircraft) above sea level as indicated by your pressure altimeter. When using a pressure altimeter, you are actually flying along a constant- pressure surface. (To visualize this flight, you can compare the reported altitudes of the 300- mb levels of the two stations.) As you approach Little Rock, your aircraft would actually be at a ________ altitude than that indicated by your pressure altimeter when you were over Denver.
[ ] higher
[ ] lower
7. Conversely, if you were to fly from Denver to Little Rock while maintaining an actual altitude of 31,000 feet, the air pressure outside your plane would ________.
[ ] gradually increase
[ ] remain the same
[ ] gradually decrease
8. Recall the introductory portion of Weather Manual Investigation 5B where profiles from Florida and Massachusetts over a similar range of latitude were shown in Figure 6. In general, as one moves toward Earth’s poles and higher latitudes, one would expect the altitudes of a particular constant-pressure surface to become ________.
[ ] higher
[ ] lower
9. This altitude change of a given pressure surface as one moves poleward is in response to generally ________ average temperatures in the underlying air columns, between the constant pressure surface and Earth’s surface.
[ ] higher
[ ] lower
16Z 26 SEP 2017 Isobars, Fronts. Radar &Dato; Fronts ot 12Z 1024 230 209 46 50 237 43 51 21 6 5 211 169 2 O47 22 46 1875 181 2 42 554 671 4 69 0 63 137 1007 56105 71 69 47 70 69 133 1 84 70 87 13 g13 101 1013 .7 BlueIsobars (4 mb) Figure 1.- Analyzed NCEP weather map with Isobars, Radar & Data for 16Z 26 NCEP/NWS/NOA4 NATIONAL 2 KM BASE REFLECT 0.00 DEG September 2017. Fronts were analyzed four hours prior to other data.Explanation / Answer
1) Cooler and had less water vapor
as it can be seen by the data that denver has temperature and dewpoint of 50°F and 42°F, respectively, lower as compared to little rock which has temperature and dewpoint of 82°F and 69°F, respectively.
2) The plotted temperatures and dew points in Denver begin much higher on the chart than Little Rock. The reason for the difference is that Denver, the “mile-high” city, is at a much lower elevation than Little Rock. This means the launched balloon at Denver cannot obtain data for all the same pressure levels as Little Rock.
3) Comparing the two temperature profiles, the atmosphere from 700 mb to about 250 mb was cooler above Denver
4) the correct option is "all of these", because all the options given were at higher altitudes over Little Rock than over Denver
5) Comparing the altitudes of each of the pressure surfaces from 700 mb to 100 mb indicates that individual constant-pressure surfaces slope from their altitudes in the generally warmer air over Little Rock downward to their altitudes in the cooler air over Denver.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.