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PRESSURE ALOFT

300 mb. 300 mb. 500 mb. 500 mb. 1000 mb. 1000 mb. PRESSURE ALOFT. Top of Atmosphere. 300 mb 500 mb 1000 mb. Earth’s surface. 0 o N 45 o N 90 o N. Tall Blocks. Short Blocks. PRESSURE ALOFT. PRESSURE ALOFT. 90 o N 45 o N 0 o N. 5200. 5400. 5600. 5800.

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PRESSURE ALOFT

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  1. 300 mb 300 mb 500 mb 500 mb 1000 mb 1000 mb PRESSURE ALOFT Top of Atmosphere 300 mb 500 mb 1000 mb Earth’s surface 0oN 45oN 90oN

  2. Tall Blocks Short Blocks PRESSURE ALOFT

  3. PRESSURE ALOFT 90oN 45oN 0oN 5200 5400 5600 5800

  4. PRESSURE ALOFT 90oN 45oN 0oN 5200 5400 5600 5800

  5. PRESSURE ALOFT 90oN 45oN 0oN 5200 5400 5600

  6. PRESSURE ALOFT

  7. PRESSURE ALOFT 5800 5760 5700 5640 5580 5520 5460 5400 5340 5280 HL

  8. HL PRESSURE ALOFT 5800 5760 5700 5640 5580 5520 5460 5400 5340 5280

  9. PRESSURE ALOFT

  10. PRESSURE ALOFT

  11. MERIDIONAL FLOW

  12. ZONAL FLOW

  13. GEOSTROPHIC WIND 5300 5500 5700

  14. TYPICAL 500mb CHART Note wind speed/pressure gradient relationship!

  15. THE JET STREAM

  16. THE JET STREAM

  17. THE JET STREAM

  18. THE JET STREAM

  19. MID-LATITUDE JET Pressure = 250 mb Pressure = 250 mb X 10000 m Wedge of Cold Air 60oN 30oN

  20. 300 mb MID-LATITUDE JET

  21. MID-LATITUDE JET

  22. PRESSURE SYSTEMS

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