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20201208175437 Weather Analysis 2020

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User Generated

Subject

Geography

School

Central Texas College

Course

GEOG 217

Type

Homework

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xbune844

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Geography 217: Worksheet Name

Weather Analysis/Hurricanes Date: 12/1/2020

Thunderstorms/Tornadoes 50 points

Weather Analysis: Part I (25 points)

1. According to Lutgens and Tarbuck, several weather maps/charts are important for

weather analysis and subsequent forecasting. What are the chief attributes of associated

with the 200/300 mb chart, 700 mb chart and 850 mb chart for weather forecasting?

200/300 mb

According to Jeff Habby, the map is important since the jet streams are centered about

300 mb in the winder due to the low temperature and higher air density, and about 200

mb due to the higher temperature and lower air density, and the chart is useful for

studying the jet stream, jet line, trough and ridge pattern in the air.

According to NOAA, a map of 200/300 mb can be used to research jet streams with a

speed of 130 km per hour or more.

According to the American Meteorological Society, the 300 mb map can be used

to control aviation operations, as it can track horizontal wind flow, pattern and strength.

700 mb chart

According to Jeff Habby, the map is used to measure the dewpoint depressions, the

frequency of the advection, the detection of barotropic and baroclinic shortwave, the

estimation of changes in the trough/ridge trend, and this chart ideally reflects the

trough/ridge pattern and the kink in the height contours of the shortwave.

According to NOAA, the 700 mb map can be used to study relative humidity

in the atmosphere unless the area analyzed is mountainous and can help forecast

precipitation.

According to the American Meteorological Society, the 700 mb map can

be used to describe the potential for and intensification of thunderstorms.

850mb chart

Useful to predict conditions between altitudes of around 5000 m above the level of the

lower portion of the troposphere.

According to Jeff Habby, this map is useful for researching thermal advection at a lower

stage of the atmosphere.

According to NOAA, this map is useful for evaluating the predictable water in the

atmosphere and can help forecast the potential of lightning, thunderstorm, snowfall and

hail storms.

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2. Satellites are also important. Distinguish between the GOES and POES satellites. What

are the advantages of visible light imagery and thermal IR imagery?

The NOAA POES (Polar-orbiting Operating Environmental Satellites) work in low Earth

orbits (approximately 520 miles altitude) that cross Earth poles, enabling satellites to

circle Earth every 100 minutes (approximately 14 times a day). Since the Planet rotates

under the spacecraft, the satellites see a different swath of Earth in every orbit, allowing

satellite cameras and sensors to see the whole Earth every 12 hours. Low altitude orbits

often make it easier to use less costly cameras and sensors, which reduce the expense of

satellites.

Although costs and data are higher, the POES satellites have one drawback: it takes 6

hours to reach half of the earth, making it impossible to track a storm or a typhoon. The

NOAA GOES (Geostationary-orbiting Operation Environmental Satellites) addresses this

issue by orbiting the Earth at very high (approximately 22,300 miles) equatorial orbits,

which are so wide that the satellites require 24 hours per orbit. Like TV and other

communications satellites that often inhabit these so-called geosynchronous orbits, the

motion of the GOES satellites is aligned with the rotation of the Earth, and the satellite

tends to be hovering over one spot, which ensures that it can take pictures of the same

view of the Earth all the time. This makes nearly real-time imagery. The entire planet

disk allows continual tracking of tornadoes, flash flooding, hail storms and hurricanes.

3. Go to the image GOES16_CONUS_East_sandwich.png. Match the sites with the

following situations. One site has two situations

Site 1 (a) Nimbostratus clouds

Site 2 (b) Towering Cumulonimbus Clouds

Site 3 (c) Some cumulonimbus clouds

(d) Hurricane Iota

Site 1 - Some cumulonimbus clouds

Site 2 - Nimbostratus clouds

Site 3 - Towering Cumulonimbus Clouds

4. Using the Skew-T diagram p. 327 (ed. 14) or the electronic image

Skew_T_dforced_lift.png. Calculate Lift Index Value. Lift Index Value (LIV) =

Ambient Temp @ 500mb – Temp @ 500mb of an adiabatically (forcibly) lifted parcel of

air. What does this value mean? See MS Word document LIV_K_values_PoP

Lift Index Value (LIV) = Ambient Temp @ 500mb – Temp @ 500mb of an adiabatically

(forcibly) lifted parcel of air

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1 Geography 217: Worksheet Weather Analysis/Hurricanes Thunderstorms/Tornadoes Name Date: 12/1/2020 50 points Weather Analysis: Part I (25 points) 1. According to Lutgens and Tarbuck, several weather maps/charts are important for weather analysis and subsequent forecasting. What are the chief attributes of associated with the 200/300 mb chart, 700 mb chart and 850 mb chart for weather forecasting? 200/300 mb According to Jeff Habby, the map is important since the jet streams are centered about 300 mb in the winder due to the low temperature and higher air density, and about 200 mb due to the higher temperature and lower air density, and the chart is useful for studying the jet stream, jet line, trough and ridge pattern in the air. According to NOAA, a map of 200/300 mb can be used to research jet streams with a speed of 130 km per hour or more. According to the American Meteorological Society, the 300 mb map can be used to control aviation operations, as it can track horizontal wind flow, pattern and strength. 700 mb chart According to Jeff Habby, the map is used to measure the dewpoint depressions, the frequency of the advection, the detection of barotropic and baroclinic shortwave, the estimation of changes in the trough/ridge trend, and this chart ideally reflects the trough/ridge pattern and the kink in the height contours of the shortwave. According to NOAA, the 700 mb map can be used to study relative humidity in the atmosphere unless the area analyzed is mountainous ...
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Tags: low temperature American Meteorological Society jet stream weather maps and charts barotropic and baroclinic shortwave dewpoint depressions