DVN Upper Air (Weather Balloon) Page

Nh

CL

H

CM

CH

 Code   Clouds (x/10)

   0    0 
   1    <=1/10 (1/8) 
   2    2/10-3/10 (2/8) 
   3    4/10 (3/8) 
   4    5/10 (4/8) 
   5    6/10 (5/8) 
   6    7/10-8/10 (6/8) 
   7    >= 9/10 (7/8) 
   8    10/10 (8/8) 
   9    Sky obscrd by 
         fog/wx 
   /    Clouds can't be 
        seen, NOT due
        to fog / wx 

 Code   Coding Criteria

   9    CB / CB w/ anvil is present
   3    CB not fibrous / w/out anvil
   4    SC formed by spreading of CU 
   8    CU & SC w/ diff. bases
   2    TCU / mod. CU present
   1    CU w/ little vert. extent
   5    SC
   6    ST
   7    STFRA / CUFRA
   0    No clouds
   /    Low clouds obscured
        by fog/other phenom   

 Code  Height (ft)  

   0   0-100 
   1   200-300 
   2   400-600 
   3   700-900 
   4   1000-1900 
   5   2000-3200 
   6   3300-4900 
   7   5000-6500 
   8   7000-8000   
   9   >=8500 or
       no clouds 
   /   Unknown 

 Code   Coding Criteria

   9    AC w/ chaotic sky
   8    ACCAS
   7    AC w/ NS/AS OR AC
         opaque / 1/more levels
   6    AC from spreading CU/CB
   5    AC progressively
         invading sky
   4    AC changing in appearance
   3    AC semi-trans. @ 1 level
   2    No AC but opaque NS / AS
   1    No AC but semi-trans. NS/AS
   0    No mid clouds
   /    Mid clouds not visible 

 Code   Coding Criteria

   9    CC alone / w/ CI / CS
   7    CS covers whole sky
   8    CS not covering the whole sky 
   6    CS invading sky >=45°
          above horizon
   5    CS invading sky <45°
          above horizon
   4    CI invading sky
   3    Dense CI from a CB
   2    Dense CI
   1    CI
   0    No high clouds
   /    High clouds not visible 

• No GPS
   
• SPS Failing to Initialize
   
• GPS, but no GPS Matches before release
   
• No TRS Control / TRS Initialization Unsuccessful
   

• Signal Loss / Missing Data
   
• RWS fails to detect Release
   
• Antenna Not Tracking Properly GPS Loss
   
• MCU Overload with Rapidly Changing Angles
   
• Avoiding MCU Overload Errors through Launch Techniques
   

                    CELSIUS TO FAHRENHEIT CONVERSION TABLE

  F   C   F  ||  F    C    F ||  F    C    F  ||   F    C    F  ||   C    F
-------------||--------------||---------------||----------------||-----------
 32 -0.0+ 32 || 14 -10.0+ 50 ||  -4 -20.0+ 68 || -22 -30.0+  86 || 40.0+ 104
 30 -1.0+ 34 || 12 -11.0+ 52 ||  -6 -21.0+ 70 || -24 -31.0+  88 || 41.0+ 106
 28 -2.0+ 36 || 10 -12.0+ 54 ||  -8 -22.0+ 72 || -26 -32.0+  90 || 42.0+ 108
 27 -3.0+ 37 ||  9 -13.0+ 55 ||  -9 -23.0+ 73 || -27 -33.0+  91 || 43.0+ 109
 25 -4.0+ 39 ||  7 -14.0+ 57 || -11 -24.0+ 75 || -29 -34.0+  93 || 44.0+ 111
 23 -5.0+ 41 ||  5 -15.0+ 59 || -13 -25.0+ 77 || -31 -35.0+  95 || 45.0+ 113 
 21 -6.0+ 43 ||  3 -16.0+ 61 || -15 -26.0+ 79 || -33 -36.0+  97 ||          
 19 -7.0+ 45 ||  1 -17.0+ 63 || -17 -27.0+ 81 || -35 -37.0+  99 ||          
 18 -8.0+ 46 ||  0 -18.0+ 64 || -18 -28.0+ 82 || -36 -38.0+ 100 ||          
 16 -9.0+ 48 || -2 -19.0+ 66 || -20 -29.0+ 84 || -38 -39.0+ 102 ||          


                    FAHRENHEIT TO CELSIUS CONVERSION TABLE

  F   C   F  ||  F    C    F ||  F    C    F  ||   F    C    F  ||   C    F  
-------------||--------------||---------------||----------------||-----------
 32 -0.0+ 32 || 14 -10.0+ 50 ||  -4 -20.0+ 68 || -22 -30.0+  86 || 40.0+ 104 
 31 -0.6+ 33 || 13 -10.6+ 51 ||  -5 -20.6+ 69 || -23 -30.6+  87 || 40.6+ 105 
 30 -1.1+ 34 || 12 -11.1+ 52 ||  -6 -21.1+ 70 || -24 -31.1+  88 || 41.1+ 106 
 29 -1.7+ 35 || 11 -11.7+ 53 ||  -7 -21.7+ 71 || -25 -31.7+  89 || 41.7+ 107 
 28 -2.2+ 36 || 10 -12.2+ 54 ||  -8 -22.2+ 72 || -26 -32.2+  90 || 42.2+ 108 
 27 -2.8+ 37 ||  9 -12.8+ 55 ||  -9 -22.8+ 73 || -27 -32.8+  91 || 42.8+ 109 
 26 -3.3+ 38 ||  8 -13.3+ 56 || -10 -23.3+ 74 || -28 -33.3+  92 || 43.3+ 110 
 25 -3.9+ 39 ||  7 -13.9+ 57 || -11 -23.9+ 75 || -29 -33.9+  93 || 43.9+ 111 
 24 -4.4+ 40 ||  6 -14.4+ 58 || -12 -24.4+ 76 || -30 -34.4+  94 || 44.4+ 112 
 23 -5.0+ 41 ||  5 -15.0+ 59 || -13 -25.0+ 77 || -31 -35.0+  95 || 45.0+ 113 
 22 -5.6+ 42 ||  4 -15.6+ 60 || -14 -25.6+ 78 || -32 -35.6+  96 ||           
 21 -6.1+ 43 ||  3 -16.1+ 61 || -15 -26.1+ 79 || -33 -36.1+  97 ||           
 20 -6.7+ 44 ||  2 -16.7+ 62 || -16 -26.7+ 80 || -34 -36.7+  98 ||           
 19 -7.2+ 45 ||  1 -17.2+ 63 || -17 -27.2+ 81 || -35 -37.2+  99 ||           
 18 -7.8+ 46 ||  0 -17.8+ 64 || -18 -27.8+ 82 || -36 -37.8+ 100 ||           
 17 -8.3+ 47 || -1 -18.3+ 65 || -19 -28.3+ 83 || -37 -38.3+ 101 ||           
 16 -8.9+ 48 || -2 -18.9+ 66 || -20 -28.9+ 84 || -38 -38.9+ 102 ||           
 15 -9.4+ 49 || -3 -19.4+ 67 || -21 -29.4+ 85 || -39 -39.4+ 103 ||           

  Code   
 Figure   Definition
---------------------------------------------------------    
   
       00    Not allocated.
   
 01-31:   XX day of month (UTC)
   
 32-39:   Not allocated.
   
 40-59:   Reason for No Report / Incomplete Report
   
       40    Report not filed
       41    Incomplete report; full report to follow
       42    Ground equipment failure
       43    Observation delayed
       44    Power failure
       45    Unfavorable weather conditions
       46    Low maximum altitude (< 600m/1500ft abv ground)
       47    Leaking balloon
       48    Ascent not authorized for this period
       49    Alert
       50    Ascent did not extend above the 400hPa level
       51    Balloon forced down by icing condition
       52    Balloon forced down by precipitation
       53    Atmospheric interference
       54    Local interference
       55    Fading signal*
       56    Weak signal*
       57    Preventive maintenance
       58    Flight equipment failure (transmitter,
                balloon, attachments, etc.)
       59    Any reason not listed above
   
        * Fading signals differ from weak signals in that they 
          are first received satisfactorily, then become 
          increasingly weaker, and finally become too weak for 
          reception, while "weak signals" are weak from the 
          beginning of the ascent.
   
 60-64:   Miscellaneous
   
       60    Unassigned
       61    Unassigned (Aerometeorograph report precedes)
       62    Radiosonde report precedes
       63    Unassigned
       64    Unassigned (Stability Index follows...000isis)
   
 65-69:   Doubtful (and Missing) Data
   
       65    Geopotential(Altitude) and temperature data are
                doubtful between following levels: 0PnPnP'nP'n
       66    Geopotential(Altitude) data are doubtful between
                the following levels: 0PnPnP'nP'n
       67    Temperature data are doubtful between the
                following levels: 0PnPnP'nP'n
       68    Dew point depression is missing for reasons
                other than "motor-boating" between the 
                following levels: 0PnPnP'nP'n (Not used when 
               TnTn is also missing)
       69    Unassigned
   
 70-74:   Not allocated.          

  Code   
 Figure   Definition
---------------------------------------------------------    

 75-89:   Corrected Data
   
       75    Unassigned
       76    Unassigned
       77    Unassigned
       78    Corrected tropopause data section follows
       79    Corrected maximum wind section follows
       80    Corrected report for the entire report
                (first* and second* transmissions) precedes
       81    Corrected report of the entire first transmission
                precedes
       82    Corrected report of the entire second transmission
                precedes
       83    Corrected data for mandatory levels** follow
       84    Corrected data for significant levels** follow
       85    Minor error(s) in this report; correction follows
       86    Significant level(s) not included in original report
                follow: //PnPnPn TnTnTanDnDn or PnPnPnTnTn
       87    Corrected data for surface follow
       88    Corrected additional data groups follow:
               101AdfAdf .... etc.
       89    Unassigned
   
 90-99:
   
       90    Extrapolated geopotential data follow: PnPnhnhnhn
               (dndndnfnfn)
       91    Extrapolated data precede *
       92    Unassigned
       93    Unassigned
       94    Average wind for the surface to 5000 ft MSL layer
                and the 5000 to 10000 ft MSL layer follow: ddfff
                ddfff (can be used in the Part A message)
       95    Early transmission of 850 and 500 hPa data and
                stability index follows: 85hhh TTTaDD ddfff 50hhh
                TTTaDD ddfff isis
       96    Early transmission of 850, 700, and 500 hPa data
                and stability index follows: 85hhh TTTaDD ddfff
                70hhh TTTaDD ddfff  50hhh TTTaDD ddfff isis
       97    Early transmission of 500 hPa data and stability
                index follows: 50hhh TTTaDD ddfff isis
       98    Early transmission of 700 hPa data and stability
                index follows: 70hhh TTTaDD ddfff isis
       99    Not to be allocated
   
       Code figure 91 is used only in reports of dropsonde
       observations.
   
       Unless both the stability index and the mean winds are
       missing, the Part A message always contains two special
       101 groups as follows:
   
       10164    Group that identifies stability index.
       10194    Group that identifies the mean winds.
   
       A 5-character group follows the 10164 which contains the
       encoded stability index.  The value that appears in the
       coded message for stability index is interpreted as follows:
   
       Coding Stability Index
   
    Code    Meaning
    Value
   
    00-40    Stability index is 0 to 40
    51-90    Stability index is -1 to -40
       91       RH < 20% at either base or 500 hPa level or
                   calculation failed.
       92       RH is missing at the base level.