1 / 29

Drawing Isobars:

Discover how to draw isobars to visualize atmospheric pressure and predict weather patterns accurately. Follow a step-by-step guide using a Weather Forecasting Review Worksheet and learn to identify high and low-pressure systems. Understand wind direction in relation to pressure systems for effective weather forecasting.

alexscott
Download Presentation

Drawing Isobars:

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Drawing Isobars: Isobars are lines drawn to connect identical values shown on maps…

  2. Drawing Isobars: In meteorology, isobars are used to connect points of equal atmospheric pressure…

  3. Drawing Isobars: This information will graphically depict weather phenomena that can be used in forecasting…

  4. Drawing Isobars: Let’s begin by using the blank Weather Forecasting Review Worksheet…

  5. Drawing Isobars: Using a pencil, you will lightly draw lines connecting identical values of sea level pressure.

  6. Drawing Isobars: Isobar lines do not cross each other.

  7. Drawing Isobars: Isobars are usually drawn for every four millibars using 1000 millibars as your starting point.

  8. Drawing Isobars: Therefore, these lines should have values of 1000, 1004, 1008, 1012, 106,etc., or 996, 992, 988, 984, etc.,

  9. Drawing Isobars: Begin drawing from 1024 millibars station pressure over Salt Lake City…

  10. Drawing Isobars: Draw a line to the next 1024 value located to the NE as shown..

  11. Drawing Isobars: Without lifting your pencil from the paper, continue drawing a line connecting the 1024 values located in the SE and SW

  12. Drawing Isobars: Repeat the procedure for the next isobar value of 1020

  13. Drawing Isobars: Repeat the procedure for the next isobar value of 1016

  14. Drawing Isobars: Repeat the procedure for the next isobar value of 1016

  15. Drawing Isobars: Repeat the procedure for the next isobar value of 1012

  16. Drawing Isobars: Repeat the procedure for the next isobar value of 1008

  17. Drawing Isobars: Repeat the procedure for the next isobar value of 1008

  18. Drawing Isobars: Your finished drawing should look something like this:

  19. Drawing Isobars: These isobars can be used to identify ‘High’ and ‘Low’ pressure systems… A B Which of these systems is a ‘High’ pressure system?

  20. Drawing Isobars: A is a high pressure system A

  21. Drawing Isobars: Draw a large ‘H’ in the center of the high pressure system as shown H

  22. Drawing Isobars: In a high pressure system, winds revolve around it in a clockwise direction… H

  23. High Pressure Systems In high pressure systems, wind direction is created by the sinking of cooler, drier air…

  24. Drawing Isobars: B refers to a ‘low’ pressure system B H L

  25. Drawing Isobars: In a low pressure system, winds revolve around it in a counter-clockwise direction… B H L

  26. Drawing Isobars: In most cases, these air pressure systems move in a west to east direction… H L

  27. Low Pressure Systems In low pressure systems, wind direction is created by the rising of warm, moist air…

  28. Drawing Isobars: If we ignore the numbers, this is how the map might look after 24 hours… L H

  29. Drawing Isobars: This information will graphically depict weather phenomena that can be used in forecasting…

More Related