HAPEX SAHEL Information System
A joint project between CESBIO, ORSTOM and CNES

READING_SIGT_DAT

Comment:

This Table contains temperature and heat flux data measured and derived by sigma method. Reading University.

Principal investigator:

George DUGDALE

The fields of the table are:

1. GRID_ID : The name of the grid where the data was taken.
2. GRID_ORDER : The number of the station in the grid cell.
3. OBS_DATE : This column contains the date on which measurement was made.
4. OBS_TIME : This column contains the end of 10mn period averaging. (HHMI GMT).
5. MAST_GROUP : This column contains the identifier of the group of masts from which the measurement was made. when 1-->masts 1 and 2.When 2-->masts3 and 4.
6. U1 : This column contains the wind speed (m/s) from mast 1 if mast_group=1 and mast 3 if mast_group=2.
7. U2 : This column contains the wind speed as U1.
8. T1 : This column contains the temperature measured from mast 1 when mast_group=1 and from mast 3 when mast_group=2.
9. T2 : This column contains the temperature as T1.
10. T3 : This column contains the temperature as T1.
11. T4 : This column contains the temperature measured from mast 2 when mast_group=1 and from mast 4 when mast_group=2.
12. T5 : This column contains temperature as T4.
13. ST1 : This column contains the standard deviation of T1.
14. ST2 : This column contains the standard deviation of T2.
15. ST3 : This column contains the standard deviation of T3;
16. ST4 : This column contains the standard deviation of T4.
17. ST5 : This column contains the standard deviation of T5.
18. RAD : This column contains the net radiation.
19. RHO : This column contains the sir density derived from T5.
20. H1 : This column contains the sensible heat flux.
21. H2 : This column contains the sensible heat flux.
22. H3 : This column contains the sensible heat flux.
23. H4 : This column contains the sensible heat flux.
24. H5 : This column contains the sensible heat flux.
25. L1 : This column contains the Monin_Obukhov length.
26. L2 : This column contains the Monin-Obukhov length.
27. L3 : This column contains the Monin-Obukhov length.
28. L4 : This column contains the Monin-Obukhov length.
29. L5 : This column contains the Monin-Obukhov length.
30. CERT_LEVEL : This column contains the certification level for the data : T)est,C)hecked by PI, U)nchecked by PI.
31. REV_DATE : This column contains the revision date for the data in the format DD-MMM-YY.

Associated keywords

• Sigma-T Method.

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