Acoustic Forecasts for 4 August 0000Z; 600Hz and 900Hz, Issued 4 August 2009

600HzHorizontal Acoustic Climate Maps
Vertical Acoustic Cross-sections
900HzHorizontal Acoustic Climate Maps
Vertical Acoustic Cross-sections
 NetCDF Files

Fcst. for 4 Aug. 00Z - 600Hz
Expected Range (km) at fixed time ts for source at (xs,ys)
(Mean Range on 04Aug 000Z at which TL drops to 60-70db averaged over all bearings and 1-100m depths, for source at 600Hz,40m)		 Expected Range (km) in cross-slope direction at fixed time ts for source at (xs,ys)
(Mean Range on 04Aug 000Z at which TL in cross-slope direction drops to 60-70db averaged over 1-100m depths, for source at 600Hz,40m)		 Expected Range (km) in along-slope direction at fixed time ts for source at (xs,ys)
(Mean Range on 04Aug 000Z at which TL in along-slope direction drops to 60-70db averaged over 1-100m depths, for source at 600Hz,40m)		 Expected Range (km) at fixed time ts for source at (xs,ys) and receiver at 20m depth
(Mean Range on 04Aug 000Z at which TL drops to 60-70db for receiver at 20m depth, averaged over all bearings, for source at 600Hz,40m)		 TL(xs,ys,ts)
(TL (db) for source at 600Hz,40m averaged over all bearings, 5-7km ranges and 1-100m depths)		 Mean TL (db) for offshore source (600Hz,40m) intruding the operational domain at 21.85N,159.81W
(TL is averaged over 1-100m depths at each receiver location)
Std Dev in Depth
of Expected Range		 Std Dev in Depth
of Expected X-Slope Range		 Std Dev in Depth
of Expected Along-Slope Range		 Std Dev in Bearing
of Expected Range for 20m Receiver		 Std Dev in Depth of TL  
 
Std Dev in Bearing
of Expected Range		       Std Dev in Bearing of TL  
       
Sound Speed in section 21.85N,159.81W to 21.91N,159.77W Transmission Loss (for source at 600Hz,40m) in section 21.85N,159.81W to 21.91N,159.77W Sound Speed at "Barrier Section" Transmission Loss (for source at 600Hz,40m) at "Barrier Section" Sound Speed at "Cross-Slope Section" Transmission Loss (for source at 600Hz,40m) at "Cross-Slope Section"

Fcst. for 4 Aug. 00Z - 900 Hz
Expected Range (km) at fixed time ts for source at (xs,ys) Expected Range (km) in cross-slope direction at fixed time ts for source at (xs,ys) Expected Range (km) in along-slope direction at fixed time ts for source at (xs,ys) Expected Range (km) at fixed time ts for source at (xs,ys) TL(xs,ys,ts)
(TL (db) for source at 900Hz,40m 		Mean TL (db) for offshore source (900Hz,40m) intruding the operational domain at 21.85N,159.81W
Std Dev in Depth
of Expected Range		 Std Dev in Depth
of Expected X-Slope Range		 Std Dev in Depth
of Expected Along-Slope Range		 Std Dev in Bearing
of Expected Range for 20m Receiver		 Std Dev in Depth of TL  
 
Std Dev in Bearing
of Expected Range		       Std Dev in Bearing of TL  
       
Sound Speed in section 21.85N,159.81W to 21.91N,159.77W Transmission Loss (for source at 900Hz,40m) in section 21.85N,159.81W to 21.91N,159.77W Sound Speed at "Barrier Section" Transmission Loss (for source at 900Hz,40m) at "Barrier Section" Sound Speed at "Cross-Slope Section" Transmission Loss (for source at 900Hz,40m) at "Cross-Slope Section"

UTC and Hawaii time conversion
UTC 0000 0300 0600 0900 1200 1500 1800 2100
HST 1400 (-1) 1700 (-1) 2000 (-1) 2300 (-1) 0200 0500 0800 1100

Available Forecast NetCDF Files
Physics Fcst for Aug04-00Z  MIT_phys_2009080214_2009080312_2009080500_03h.nc.gz
Acoustics Fcst for Aug04-00Z 600Hz MIT_acoustic_TL_2009080214_2009080400_2009080400_00h_600.nc.gz
900Hz MIT_acoustic_TL_2009080214_2009080400_2009080400_00h_900.nc.gz

The file names can be interpreted as follows (all times are in UTC):

       time of last
      analysis field           time of last
      in simulation            fields in file
         yyyymmddHH            yyyymmddHH
MIT_phys_2009072512_2009072812_2009073000_03h.nc.gz
                    yyyymmddHH            HH
                   time of first        frequency with which
                   fields in file       fields are stored in file

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