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Gary Hodges. MFRSR– Multi-Filter Rotating Shadowband Radiometer MFR– Multi-Filter Radiometer NIMFR– Normal Incidence Multi-Filter Radiometer NFOV– Narrow Field-Of-View. Sept 2007. 1. 2. 4. 5. 3. 6. 8. 7. 10. 9. 11. 12. 15. 13. 16. 18. 19. 20. 22. 24. 27. Oct 2008. 1.

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Gary Hodges

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Gary hodges

Gary Hodges

MFRSR– Multi-Filter Rotating Shadowband Radiometer

MFR– Multi-Filter Radiometer

NIMFR– Normal Incidence Multi-Filter Radiometer

NFOV– Narrow Field-Of-View


Gary hodges

Sept 2007

1

2

4

5

3

6

8

7

10

9

11

12

15

13

16

18

19

20

22

24

27


Gary hodges

Oct 2008

1

2

4

5

3

6

8

7

10

9

11

12

15

13

16

18

19

20

22

24

27


Gary hodges

System Deployment

  • Occurred primarily over the past year

  • Completed Sept 08

Problems Encountered

  • Communication problems – Solved

  • Discovered an issue with some band motors – Solved

  • Heater board failures (Pt. 1) – Solved

  • Heater board failures (Pt. 2) – Investigating

  • Reading the head ID – Investigating


Gary hodges

Cosine Bench

Comparisons before and after move to SGP


Gary hodges

Visible MFRSR Spectral Bench

  • ¼ m monochrometer by Spectral Products

  • 175 W xenon arc lamp

  • Scans between 390 nm and 1000 nm

  • Data acquisition with Keithley DMM 2000-20

  • Automated computer controlled operation


Gary hodges

Calibration and Data Hierarchy Summary

  • a0:Raw data. No corrections, calibrations, etc.

  • b1:Nominally calibrated. These are lamp calibrated data. Cosine corrections and nighttime offsets have been applied, as well as diffuse corrections.

  • c1:Langley calibrated data. Continuously calibrated using Gueymard extra-terrestrial spectra. Available on an approximately month-delayed basis.


Gary hodges

Continuing with c1 data

  • Filename format is xxxmfrsraod1michyy.c1

  • Copious data are included in each file, e.g.,

    • Calibrated Data

    • AOD

    • Rayleigh Optical Depth

    • Ozone Information

    • Cosine Corrections

    • Filter Function Information

    • Nighttime Offset Information

    • Diffuse Correction

    • …And the list goes on


Gary hodges

Historical Data

  • Gets same treatment as current, with one main difference. Lamp (dark) data are used instead of actual nighttime measurements.

  • Have currently processed:

    • TWP (C1, 2 and 3)

    • NSA (C1 and 2; NIMFRs C1 and 2)

    • SGP (EF1, 2, 3, 4, 5, 6, 13 and C1)


Gary hodges

Maintenance Effort

19980601 - 19981028


Gary hodges

Inventory


Gary hodges

What’s Left?

  • Upgrade the TWP and NSA sites

  • Add high latitude functionality

  • Add “stutter” mode to improve large particle retrievals. Being addressed in ECR-00688.


Gary hodges

Summary

  • The SGP sites have all been completed

  • All are currently functioning

  • Effort to maintain network going forward is relatively low

  • Will upgrade TWP next and NSA if code is modified


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