06 Sept 2009 - High altitude layer above FR ?

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Nice tropo in Durban area - 06 september 2009

Unfortunatly, no qso on that day. Maybe i was at too low altitude?

The general situation :

1-AIS reports

ais-05sept2009-2130z (boats on right are being rx by my station)

aisZS-06sept2009-08z

ais-zs-fr-06sep-2009-10z

2-The Hepburn predictions

3-The radiosounding data

Durban 07september 2009 at 00z and 09z

3
6.4 306.3

4-The predicted data from NOAA Air Resources Laboratory - GDAS Profile

DURBAN 06 sept 00z	DURBAN 06 sept 09z
HEIGHT DT/DZ TDIFF CRITICAL INVERSION 403. 0.011 2.1 ** 626. 0.012 2.6 853. 0.014 3.2 1089. 0.015 3.6 1583. 0.013 6.6 2106. 0.005 2.8 2654. 0.001 0.4 3230. 0.001 0.4 3836. 0.000 0.1 4477. 0.001 0.5 5160. 0.004 2.8 5896. 0.003 2.4 6691. 0.002 1.3 7553. 0.001 0.5 8502. 0.004 4.1 9569. 0.003 3.6 10785. 0.004 4.9 12221. 0.008 11.5 14040. 0.014 25.4 16538. 0.012 30.6 20783. 0.025 26667. 0.031 ** gdas1.sep09.w1 Lat/Lon/Elev: -29.97 30.95 8m E = Estimated Surface Height	HEIGHT DT/DZ TDIFF CRITICAL INVERSION 374. 0.019 3.1 ** 603. 0.011 2.4 840. 0.006 1.5 1082. 0.002 0.6 1585. 0.000 0.1 2107. 0.001 0.3 2655. 0.001 0.7 3230. 0.001 0.5 3836. 0.000 0.1 4477. 0.002 1.0 5162. 0.006 4.2 5902. 0.002 1.6 6700. 0.002 1.7 7569. 0.003 2.9 8530. 0.004 4.0 9608. 0.003 3.3 10837. 0.004 4.7 12282. 0.005 7.3 14075. 0.011 19.2 16539. 0.013 32.6 20780. 0.026 26668. 0.033 ** gdas1.sep09.w1 Lat/Lon/Elev: -29.97 30.95 8m E = Estimated Surface Height
South 5R8 06 Sept 00z	South 5R8 06 Sept 09z
HEIGHT DT/DZ TDIFF CRITICAL INVERSION 426. 0.001 0.1 648. 0.002 0.4 875. 0.005 1.1 1107. 0.009 2.1 ** 1592. 0.009 4.4 2101. 0.005 2.4 2638. 0.006 3.2 3206. 0.003 1.7 3807. 0.004 2.3 4449. 0.006 3.8 5138. 0.005 3.4 5878. 0.002 1.4 6677. 0.002 1.7 7548. 0.002 2.1 8505. 0.002 1.9 9578. 0.005 5.1 10812. 0.006 7.6 12279. 0.009 13.0 14116. 0.008 15.4 16579. 0.012 29.0 20789. 0.024 26628. 0.033 ** gdas1.sep09.w1 Lat/Lon: -27.43 45.25 E = Estimated Surface Height	HEIGHT DT/DZ TDIFF CRITICAL INVERSION 433. 0.001 0.2 656. 0.002 0.5 882. 0.004 0.8 1115. 0.007 1.7 1597. 0.007 3.4 ** 2106. 0.008 3.9 2643. 0.007 3.8 3213. 0.005 2.7 3817. 0.004 2.2 4458. 0.002 1.6 5146. 0.005 3.7 5887. 0.003 2.4 6687. 0.002 1.7 7558. 0.002 1.7 8515. 0.002 1.7 9588. 0.005 5.8 10827. 0.006 8.0 12300. 0.009 13.9 14128. 0.006 11.0 16591. 0.013 31.2 20794. 0.025 26668. 0.034 ** gdas1.sep09.w1 Lat/Lon: -27.43 45.25 E = Estimated Surface Height
FR 06 Sept 00z	FR 04 Sept 09z
HEIGHT DT/DZ TDIFF CRITICAL INVERSION 439. 0.000 0.1 661. 0.001 0.2 888. 0.003 0.6 1120. 0.005 1.1 1600. 0.005 2.4 ** 2103. 0.002 1.3 2633. 0.013 6.9 3202. 0.008 4.7 3808. 0.005 3.2 4454. 0.005 3.2 5147. 0.005 3.3 5893. 0.003 2.1 6699. 0.002 1.9 7578. 0.003 2.9 8548. 0.002 2.1 9629. 0.003 2.8 10874. 0.010 12.4 12359. 0.005 7.1 14172. 0.005 9.7 16616. 0.012 29.8 20751. 0.025 26574. 0.032 ** gdas1.sep09.w1 Lat/Lon: -22.82 54.51 E = Estimated Surface Height	HEIGHT DT/DZ TDIFF CRITICAL INVERSION 448. 0.001 0.2 671. 0.001 0.3 898. 0.003 0.6 1130. 0.004 1.0 1610. 0.005 2.6 ** 2114. 0.004 2.1 2646. 0.006 3.0 3213. 0.012 6.8 3818. 0.007 4.1 4464. 0.004 2.6 5156. 0.005 3.3 5902. 0.003 2.1 6706. 0.002 1.6 7585. 0.004 3.2 8553. 0.002 2.0 9634. 0.004 4.1 10883. 0.010 12.2 12370. 0.004 6.5 14185. 0.005 9.1 16620. 0.013 31.7 20761. 0.024 98.4 26586. 0.034 ** gdas1.sep09.w1 Lat/Lon: -22.82 54.51 E = Estimated Surface Height

5-The surface pressure charts

6-The visible maps


4

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