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38 Cards in this Set

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  • Back
Streamlines DO NOT connect points of equal wind direction. Streamlines are drawn ____ ____ to the reported wind direction.
Roughly parallel
When drawing a streamline which guideline do you keep in mind?
A. Arrowheads are placed at the beginning & ending of each streamline.
B. Streamlinesbegin & end at the edges of the chart or at singular points.
C. Streamlines never cross.
D. All of the Above
D. All the Above
The tropical streamline analysis consists of 2 sets of lines which can be used to determine wind ____ & ___ at any point on the chart.
speed
direction
A tropical streamline analysis consist of two sets of lines. They are called ___ & ___ which represents wind direction & ___.
Streamlines
Isotachs
speed
The primary reason for constructing a tropical streamline analysis is due to weak horizontal gradients of ___&___.
pressure
temperature
The axis of the diverging or converging flow is depicted by drawing a special streamline known as___?
Asymptote
Streamlines should parallel wind reports. However, an exception to this rule is when wind speeds are less than __ kts. at the gradient level, or less than ___kts. at the upper levels.
5kts
10kts
On a tropical streamline what do the dashed green lines depict?
Isotachs
Placed at the beginning and eding of each streamline?
Arrowheads
a chart which depicts a continious representation of a horizontal wind field is?
Tropical streamline Analysis
Points on the chart into which more than one streamline can be drawn or about which streamlines form a closed curve are called?
Singular Points
What are the 4 types of singular points?
1. Cyclonic circulation Cyclone
2. Anticyclonic
3. Neutal points
4. Cusp
What is a transition area between 2 like singualr points or circulaion patterns or between westerly and easterly flow?
A. cyclonic circulation center
B. Asymptotes
C. Nuetral Point
d. Cusp
C. Nuetral Point
What is an intermediate pattern in the transition phase between a wave & a circulation center?
A. cyclonic circulation center
B. Asymptotes
C. Nuetral Point
d. Cusp
D. Cusp
What are the 3 major features that are found on a tropical streamline analysis?
1. Singular Pt.
2. Asymptotes
3. Waves
TROPICAL WAVE: The gradient wind pattern ahead of the wave is more___ & the pattern behind the wave is more___?
1. NE-NNE
2. SE-SSE
Asymptotes are defines as special streamlines which depict the axes within a region of major____ or ____.
Convergence
Divergence
What color are converging Asymptotes depicted?
RED
What color are diverging Asymptotes depicted?
BLUE
___ is known as an oscillation in the stream line pattern?
Wave
Remember a singular point is a point on the chart into which more than one streamline can be drawn or about which streamlines form a close curve. It is best to begin the search along the axis of the subtropical ridge line between the latitudes of ___ & ___?
20N - 35N
When searching for singular points it is best to begin along the ___ of the ____ ____.
Axis
Subtropical Ridge
At the center of a singular point the wind speed is ___ kts?
0kts
For analyzing an ANTICYCLONE a minimum of 2 ____ asymptotes will denote a center labeled with a small ___ A.
Diverging
Blue
For analyzing an CYCLONE a minimum of 2 ____ asymptotes will denote a center labeled with a small ___ c.
Converging
red
Which is a transition area between 2 like singular points (cyclones or Anti-Cy.) or circulation patterns or between westerly & easterly flow?
A. Neutral Point
B. CUSP
C. Wave
D. Asymptote
A. Neutral Point
A type of singualr point that exist between 2 anti-cyclones is called?
Neutral point
TROPICAL WAVE: The gradient wind pattern ahead of the wave is more___ & the pattern behind the wave is more___?
1. NE-NNE
2. SE-SSE
On a gradient level analysis, most of the area around the neutral point should be drawn with a ___kts isotach, & ___kts on the upper level chart?
5kts
10kts
A minimum of 2 diverging asymptotes will denote a?
Anti-cyclone
Asymptotes are defines as special streamlines which depict the axes within a region of major____ or ____.
Convergence
Divergence
A tropical WAVE has both ___ & ___ curvatures. A wave is best described as a perturbation which shows up as ___ in the streamline pattern?
Anti-cyclonic
cyclonic
curve
What color are converging Asymptotes depicted?
RED
What color are diverging Asymptotes depicted?
BLUE
When drawing isotachs, the interval between speeds of 5 & 20kts is ___kts.
Between 20 & 60kts or greater, the intervals is ___kts.
5kts
10kts
Areas of 30kts will be shaded in ___ and labeled ___?
Purple
MAX
Areas with 10kts of wind speed or less will be shaded in ___ and labeled ___?
yellow
MIN
When drawing asymptotes, red streamlines can/cannot (circle one) flow into blue streamlines?
cannot