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Outline

Outline. Taylor Factors important for CI Science Question 1 What do we need to resolve processes? Required Instrumentation and deployment Sills Further instrumentation and deployment strategies (ATMOS, AMMOS, Aircraft). Wind. DeltaT. Additional:. PM sensor?. O3 sensor?. Cell antenna.

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Outline

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  1. Outline Taylor • Factors important for CI • Science Question 1 • What do we need to resolve processes? • Required Instrumentation and deployment Sills • Further instrumentation and deployment strategies (ATMOS, AMMOS, Aircraft) 1st UNSTABLE Science Workshop 18-19 April 2007

  2. Wind DeltaT Additional: PM sensor? O3 sensor? Cell antenna Solar Radiation Pressure Solar Panel Precip T / RH + Fast T Logger DeltaT EC ATMOS Surface Mesonet Stations

  3. 4 boundary passages within ~ 1 hr, 3 in 18 min! Why collect 1 min avg mesonet data? Sydney 2000 Project 1 min average surface station data

  4. How will the ATMOS units be used? • Use both grid and line siting approaches • Collect data as 1 min averages • Augment mesonet with stations from other networks

  5. Wind GPS Compass Additional: Pressure Logger Photo / video T / RH + Fast T (ventilated) PM sensor? Rugged Laptop + Backup EC AMMOS Mobile Unit

  6. Are hi-res / fast-response obs needed?

  7. How will the AMMOS unit be used? • Collect data at 1 s intervals • Measure gradients across boundaries (met and land use) • Fill in holes in mesonet as needed

  8. What are the benefits of aircraft obs? Twin Otter during ELBOW 2001 18 July 1751 UTC

  9. Horizontal and vertical winds Huron Erie

  10. Building Cu No Cu No Cu Cloud base (LCL) Erect interface, deeper inflow Sloped interface, shallow inflow Huron Erie

  11. Temperature (C)

  12. Water Content (g m-3)

  13. Cloud Nuclei (g m-3)

  14. Skew-T Diagram Td T Aircraft descending profile over land

  15. Skew-T Diagram Td T Aircraft descending profile over water

  16. Jun 19 18Z Ascending profile over land vs. rawinsonde data at ~same time

  17. Aircraft about 300 m below cloud base, large updrafts beneath clouds. Surface Temp Lake Huron Vertical Wind Incident Solar Radiation Lake Huron LBF

  18. 3 km 2 km 1 km How would an aircraft be used? ‘Mesoscale Boundary’ flight path? 0 Ground

  19. Questions?

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