[Ips-dsgr] IPS Daily Report - 09 April 09

rwc rwc at ips.gov.au
Fri Apr 10 09:49:20 EST 2009


SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 09/2330Z APRIL 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 09 APRIL AND FORECAST FOR 10 APRIL - 12 APRIL
STATUS INDICATORS SOL:GREEN   MAG:GREEN     ION: GREEN
-----------------------------------------------------------
1A. SOLAR SUMMARY
Activity 09 Apr:  Very low

Flares: none.

Observed 10.7 cm flux/Equivalent Sunspot Number for 09 Apr:  70/5


1B. SOLAR FORECAST
             10 Apr             11 Apr             12 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 visible solar disk remains spotless. Solar wind 
speeds increased to approximately 500 km/s during the past 24 
hours under the influence of a coronal hole solar wind stream. 
Solar wind speeds are expected to decline slowly over the next 
24-48 hours. 

-----------------------------------------------------------
2A. MAGNETIC SUMMARY

Geomagnetic field for Australian Region 09 Apr: Quiet to Unsettled 

Estimated Indices 09 Apr :  A   K           
   Australian Region       8   23222321
      Darwin               8   22222322
      Townsville          11   33322322
      Learmonth            8   22222322
      Camden               -   --------
      Canberra             6   22222220
      Hobart               9   23222331
      Casey(Ant)          11   333223-1
    
Observed Regional daily pc3 Indices 09 Apr : 
      Darwin               2   (Quiet)
      Townsville           0   (Quiet)
      Learmonth            0   (Quiet)
      Alice_Springs        0   (Quiet)
      Camden              NA
      Gnangara            14   (Quiet)
      Canberra             0   (Quiet)
      Hobart              12   (Quiet)
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 09 Apr : A 
           Fredericksburg         9
           Planetary             13                         

Observed AFr/Ap Indices 08 Apr :  A   K
           Fredericksburg         4
           Planetary              5   0011 2222     


2B. MAGNETIC FORECAST 
Date      Ap    Conditions
10 Apr     8    Quiet to Unsettled 
11 Apr     4    Quiet 
12 Apr     4    Quiet 

COMMENT: Storm levels were observed at high latitude stations 
during the past 24 hours due to a coronal hole solar wind stream, 
with activity at remaining latitudes only reaching unsettled 
levels. Geomagnetic activity is expected to be predominantly 
unsettled to quiet for the next few days as the coronal hole 
wind stream abates. 

-----------------------------------------------------------
3A. GLOBAL HF PROPAGATION SUMMARY
	            Latitude Band
Date        Low            Middle         High 
09 Apr      Normal-fair    Normal         Normal-fair    
PCA Event : No event.

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

-----------------------------------------------------------
4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY


Date   T index
09 Apr     9

Observed Australian Regional MUFs
   Equatorial PNG/Niue Region:
      Deperessed 10-20% at times during local day, 
      otherwise mostly near predicted monthly values.
   Northern Australian Region:
      Deperessed 10-20% at times during local day, 
      otherwise mostly near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 35% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for April:   3

4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date   T index  MUFs
10 Apr     5    depressed 10 to 20%/near predicted monthly values 
11 Apr     0    depressed 10 to 20%/near predicted monthly values 
12 Apr     0    depressed 10 to 20%/near predicted monthly values 

COMMENT: Isolated depressions of 10-20% were observed at times 
primarily during the local day in northern regions, otherwise 
ionospheric conditions were mostly normal to enhanced during 
the past 24 hours. Isolated Spread-F/Sporadic-E conditions were 
also observed at times. Similar conditions are expected for the 
next few days. 
-----------------------------------------------------------
5. SPACE ENVIRONMENT SUMMARY

GOES satellite data for 08 Apr
       Daily Proton Fluence >1 MeV:   5.5E+05
       Daily Proton Fluence >10 MeV:  1.9E+04
       Daily Electron Fluence >2 MeV: 8.00E+05   (normal fluence)   
Electron Fluence Daily Deep Dielectric Discharge Probability: 1%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
       X-ray background: A1.0

ACE Satellite Solar Wind Day Averaged Data for 08 Apr
Speed: 339 km/sec  Density:    3.1 p/cc  Temp:    37200 K  Bz:   0 nT

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


IPS Radio and Space Services        email: asfc at ips.gov.au
PO Box 1386                         WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

IMPORTANT: This e-mail, including any attachments, may contain,
confidential or copyright information.  The views expressed in 
this message are those of the individual sender, unless 
specifically stated to be the views of IPS.  If you are not 
the intended recipient, please contact the sender immediately 
and delete all copies of this e-mail and attachments. 
Occasionally IPS sends email promoting IPS products and 
services to its mailing list customers. If you do not wish to 
receive this promotional material please email 
no-spam at ips.gov.au with the subject header:UNSUBSCRIBE"





More information about the ips-dsgr mailing list