[Ips-dsgr] IPS Daily Report - 07 April 08

[rwc]

SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 07/2330Z APRIL 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 07 APRIL AND FORECAST FOR 08 APRIL - 10 APRIL
STATUS INDICATORS SOL:GREEN   MAG:GREEN     ION: GREEN
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1A. SOLAR SUMMARY
Activity 07 Apr:  Very low

Flares: None

Observed 10.7 cm flux/Equivalent Sunspot Number for 07 Apr:  69/3

1B. SOLAR FORECAST
             08 Apr             09 Apr             10 Apr
Activity     Very low           Very low           Very low
Fadeouts     None expected      None expected      None expected
10.7cm/SSN    70/5               70/5               70/5

COMMENT: The solar wind speed remains elevated due to the coronal 
hole wind stream,ranging between about 550 to 680 km/s over the
last 24 hours. The solar wind speed is expected to remain 
elevated for at least the next 24 hours. 

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2A. MAGNETIC SUMMARY

Geomagnetic field for Australian Region 07 Apr: Mostly quiet to
unsettled. Active to minor storm levels observed at high
latitudes. 

Estimated Indices 07 Apr :  A   K           
   Australian Region      10   33222322
      Darwin               8   23222321
      Townsville          11   33222332
      Learmonth           17   33223533
      Camden               8   23122322
      Canberra            10   24122322
      Hobart               9   33122322
      Casey(Ant)          17   44-22433
    
Observed Regional daily pc3 Indices 07 Apr : 
      Darwin               0   (Quiet)
      Townsville           0   (Quiet)
      Learmonth            0   (Quiet)
      Canberra            41   (Unsettled)
      Hobart              64   (Active)
Pc3 pulsations are high frequency (10-45 second period) variations 
of the Earths magnetic field. Daily pc3-indices are the daily sum 
of 20 minute pc3-indices for that station and have been shown to be
well correlated with rejection of high resolution aeromagnetic
survey flight-line data. 

NOTE: Indices may have been generated from data obtained in 
cooperation with the following organisations: Geoscience Australia, 
University of Newcastle Space Physics Group, Australian Government 
Antarctic Division and Space Environment Research Center, Japan.


Estimated AFr/Ap Indices 07 Apr : A 
           Fredericksburg         6
           Planetary             12                         

Observed AFr/Ap Indices 06 Apr :  A   K
           Fredericksburg        11
           Planetary             18   3543 3222     

2B. MAGNETIC FORECAST 
Date      Ap    Conditions
08 Apr    10    Quiet to unsettled 
09 Apr    10    Quiet to unsettled 
10 Apr     8    Quiet to unsettled 

COMMENT: Possible isolated active levels at all latitudes over 
the next two days. Isolated minor storm levels possible at high 
latitudes. 

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3A. GLOBAL HF PROPAGATION SUMMARY
	            Latitude Band
Date        Low            Middle         High 
07 Apr      Normal-fair    Normal         Normal-fair    

PCA Event : No event.

3B. GLOBAL HF PROPAGATION FORECAST
	            Latitude Band
Date        Low            Middle         High 
08 Apr      Normal         Normal         Normal-Fair
09 Apr      Normal         Normal         Normal-Fair
10 Apr      Normal         Normal         Normal-Fair

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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY

Date   T index
07 Apr    14

Observed Australian Regional MUFs
   Equatorial PNG/Niue Region:
      Near predicted monthly values. Depressions to
      30% 12-20 UT.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% depressed.

Predicted Monthly T index for April:   6

4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date   T index  MUFs
08 Apr    10    Near predicted monthly values 
09 Apr    10    Near predicted monthly values 
10 Apr    10    Near predicted monthly values 

COMMENT: Depressions to 30% possible, mostly at high
latitudes. 

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5. SPACE ENVIRONMENT SUMMARY

GOES satellite data for 06 Apr
       Daily Proton Fluence >1 MeV:   1.7E+06
       Daily Proton Fluence >10 MeV:  1.7E+04
       Daily Electron Fluence >2 MeV: 3.60E+07   (normal fluence)   
Electron Fluence Daily Deep Dielectric Discharge Probability: 5%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
       X-ray background: A1.0

ACE Satellite Solar Wind Day Averaged Data for 06 Apr
Speed: 678 km/sec  Density:    1.0 p/cc  Temp:   235000 K  Bz:   1 nT

(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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