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Re: 19990707: cdl file for 6-hr synoptic reports
- Subject: Re: 19990707: cdl file for 6-hr synoptic reports
- Date: Thu, 8 Jul 1999 15:08:38 -0600 (MDT)
Peter,
You are correct, "Buoy/Ship Speed", and "Buoy/SHip Direction" are missed
named, the should be "Wind SPD" and "Wind DIR". The ships speed and
direction are in fields later in the CDL.
Robb...
netcdf synoptic { // synoptic netCDF definition
dimensions:
recNum = UNLIMITED ;
rep_type_len = 4;
stnName_len = 6;
cloud_levels = 3;
r_len = 256;
variables:
char rep_type( recNum, rep_type_len ) ;
rep_type:long_name = "Report type";
rep_type:_FillValue = "\0";
rep_type:reference = "WMO #306, FM 12-X";
int wmoId( recNum ) ;
wmoId:long_name = "WMO Identification number";
wmoId:_FillValue = -99999;
wmoId:reference = "systns_upc.tbl Table";
char stnName( recNum, stnName_len ) ;
stnName:long_name = "Station Name";
stnName:_FillValue = "\0";
long time_obs( recNum ) ;
time_obs:long_name = "time of Observation";
time_obs:_FillValue = -99999;
time_obs:units = "seconds since 1970-01-01 00 UTC";
long time_nominal( recNum ) ;
time_nominal:long_name = "time nominal";
time_nominal:_FillValue = -99999;
time_nominal:units = "seconds since 1970-01-01 00 UTC";
float Lat( recNum ) ;
Lat:long_name = "Station latitude";
Lat:_FillValue = -99999.f;
Lat:valid_range = -90.0, 90.0;
Lat:units = "degrees";
float Lon( recNum ) ;
Lon:long_name = "Station longitude";
Lon:_FillValue = -99999.f;
Lon:valid_range = -180.0, 180.0;
Lon:units = "degrees";
int elev( recNum ) ;
elev:long_name = "Elevation of station";
elev:_FillValue = -99999;
elev:units = "meters";
int stnType( recNum ) ;
stnType:long_name = "Type of station operation";
stnType:_FillValue = -99999;
stnType:reference = "Table 1860";
int meanWind( recNum ) ;
meanWind:long_name = "Highest mean wind speed";
meanWind:_FillValue = -99999;
meanWind:reference = "Table 3778";
int VIS( recNum ) ;
VIS:long_name = "Horizontal visibility";
VIS:_FillValue = -99999;
VIS:reference = "Table 4377";
int DIR( recNum ) ;
DIR:long_name = "Wind Direction";
DIR:_FillValue = -99999;
DIR:valid_range = 0, 360;
DIR:units = "degrees";
float SPD( recNum ) ;
SPD:long_name = "Wind Speed";
SPD:_FillValue = -99999.f;
SPD:units = "meters/sec";
float T( recNum ) ;
T:long_name = "Air Temperature to tenths";
T:_FillValue = -99999.f;
T:units = "Celsius";
int humidity( recNum ) ;
humidity:long_name = "Humidity";
humidity:_FillValue = -99999;
humidity:units = "percent";
float TD( recNum ) ;
TD:long_name = "Dew-point Air temperature to tenths";
TD:_FillValue = -99999.f;
TD:units = "Celsius";
float PRES( recNum ) ;
PRES:long_name = "Station level pressure";
PRES:_FillValue = -99999.f;
PRES:units = "millibars";
float SLP( recNum ) ;
SLP:long_name = "Sea level pressure";
SLP:_FillValue = -99999.f;
SLP:units = "millibars";
int char_Ptend( recNum ) ;
char_Ptend:long_name = "Character Pressure tendency";
char_Ptend:_FillValue = -99999;
char_Ptend:units = "0|1|2|3|4|5|6|7|8 Table 12-5";
float Ptend( recNum ) ;
Ptend:long_name = "Change in Pressure in past 3 hours";
Ptend:_FillValue = -99999.f;
Ptend:units = "millibars";
float PRECIP_amt( recNum ) ;
PRECIP_amt:long_name = "Precipitation amount";
PRECIP_amt:_FillValue = -99999.f;
PRECIP_amt:units = "mm";
PRECIP_amt:reference = "Table 3590";
int PRECIP_period( recNum ) ;
PRECIP_period:long_name = "Precipitation Period";
PRECIP_period:_FillValue = -99999;
PRECIP_period:units = "hours";
PRECIP_period:reference = "Table 4019";
int WXpresent( recNum ) ;
WXpresent:long_name = "Present weather";
WXpresent:_FillValue = -99999;
WXpresent:reference = "Manned stn Table 4677, auto Table 4680";
int WXpast( recNum ) ;
WXpast:long_name = "Past weather";
WXpast:_FillValue = -99999;
WXpast:reference = "Manned stn Table 4561, auto Table 4531";
int cloudCover( recNum ) ;
cloudCover:long_name = "Total cloud cover in oktas";
cloudCover:_FillValue = -99999;
cloudCover:reference = "Table 2700";
int cloudLow( recNum ) ;
cloudLow:long_name = "Lower level clouds";
cloudLow:_FillValue = -99999;
cloudLow:reference = "Table 0513";
int cloudMiddle( recNum ) ;
cloudMiddle:long_name = "Middle level clouds";
cloudMiddle:_FillValue = -99999;
cloudMiddle:reference = "Table 0515";
int cloudHigh( recNum ) ;
cloudHigh:long_name = "Higher level clouds";
cloudHigh:_FillValue = -99999;
cloudHigh:reference = "Table 0509";
int shipTrueDIR( recNum ) ;
shipTrueDIR:long_name = "Ship's True direction";
shipTrueDIR:_FillValue = -99999;
shipTrueDIR:reference = "Table 0700";
int shipAvgSPD( recNum ) ;
shipAvgSPD:long_name = "Ship's Avg speed";
shipAvgSPD:_FillValue = -99999;
shipAvgSPD:reference = "Table 4451";
float Tw( recNum ) ;
Tw:long_name = "Water Temperature to tenths";
Tw:_FillValue = -99999.f;
Tw:units = "Celsius";
int Pwa( recNum ) ;
Pwa:long_name = "Period of waves";
Pwa:_FillValue = -99999;
Pwa:units = "seconds";
int Hwa( recNum ) ;
Hwa:long_name = "Height of waves";
Hwa:_FillValue = -99999;
Hwa:units = "meters";
float Hwa_tenths( recNum ) ;
Hwa_tenths:long_name = "Height of waves";
Hwa_tenths:_FillValue = -99999.f;
Hwa_tenths:units = "meters";
int swellDIR1( recNum ) ;
swellDIR1:long_name = "Direction of swells";
swellDIR1:_FillValue = -99999;
swellDIR1:units = "degrees";
float Ps1( recNum ) ;
Ps1:long_name = "Period of swells";
Ps1:_FillValue = -99999.f;
Ps1:units = "seconds";
float Hs1( recNum ) ;
Hs1:long_name = "Height of swells";
Hs1:_FillValue = -99999.f;
Hs1:units = "meters";
int swellDIR2( recNum ) ;
swellDIR2:long_name = "Direction of swells";
swellDIR2:_FillValue = -99999;
swellDIR2:units = "degrees";
float Ps2( recNum ) ;
Ps2:long_name = "Period of swells";
Ps2:_FillValue = -99999.f;
Ps2:units = "seconds";
float Hs2( recNum ) ;
Hs2:long_name = "Height of swells";
Hs2:_FillValue = -99999.f;
Hs2:units = "meters";
int iceType( recNum ) ;
iceType:long_name = "Type of Ice build up";
iceType:_FillValue = -99999;
iceType:reference = "Table 1751";
int iceThick( recNum ) ;
iceThick:long_name = "Ice thickness";
iceThick:_FillValue = -99999;
iceThick:units = "centimeters";
int iceRate( recNum ) ;
iceRate:long_name = "Rate of Ice build up";
iceRate:_FillValue = -99999;
iceRate:reference = "Table 3551";
float Tb( recNum ) ;
Tb:long_name = "Web Bulb Temperature";
Tb:_FillValue = -99999.f;
Tb:units = "Celsius";
int ICE( recNum ) ;
ICE:long_name = "Sea ice or ice of land origin";
ICE:_FillValue = -99999;
int iceConcen( recNum ) ;
iceConcen:long_name = "Ice concentration";
iceConcen:_FillValue = -99999;
iceConcen:reference = "Table 0639";
int iceStage( recNum ) ;
iceStage:long_name = "Stage of development";
iceStage:_FillValue = -99999;
iceStage:reference = "Table 3739";
int iceLand( recNum ) ;
iceLand:long_name = "Ice of Land origin";
iceLand:_FillValue = -99999;
iceLand:reference = "Table 0439";
int iceEdge( recNum ) ;
iceEdge:long_name = "True bearing of Ice Edge";
iceEdge:_FillValue = -99999;
iceEdge:reference = "Table 0739";
int iceSituation( recNum ) ;
iceSituation:long_name = "Present Ice Situation";
iceSituation:_FillValue = -99999;
iceSituation:reference = "Table 5239";
float Tmax( recNum ) ;
Tmax:long_name = "Max Air Temperature to tenths";
Tmax:_FillValue = -99999.f;
Tmax:units = "Celsius";
float Tmin( recNum ) ;
Tmin:long_name = "Min Air Temperature to tenths";
Tmin:_FillValue = -99999.f;
Tmin:units = "Celsius";
int groundState( recNum ) ;
groundState:long_name = "State of ground";
groundState:_FillValue = -99999;
groundState:reference = "Table 0975";
int snowDepth( recNum ) ;
snowDepth:long_name = "Snow depth";
snowDepth:_FillValue = -99999;
snowDepth:units = "Centimeters";
snowDepth:reference = "Table 3889";
float PRECIP_amt24( recNum ) ;
PRECIP_amt24:long_name = "Precipitation amount last 24 hours";
PRECIP_amt24:_FillValue = -99999.f;
PRECIP_amt24:units = "mm";
int cloudObsured( recNum, cloud_levels ) ;
cloudObsured:long_name = "Total cloud cover in oktas";
cloudObsured:_FillValue = -99999;
cloudObsured:reference = "Table 2700";
int cloudGenus( recNum, cloud_levels ) ;
cloudGenus:long_name = "Cloud genus";
cloudGenus:_FillValue = -99999;
cloudGenus:reference = "Table 0500";
int cloudHeight( recNum, cloud_levels ) ;
cloudHeight:long_name = "Cloud Height in meters";
cloudHeight:_FillValue = -99999;
cloudHeight:reference = "Table 1677";
char report( recNum, r_len ) ;
report:long_name = "Originial report";
report:_FillValue = "\0";
report:reference = "max length 256";
:title = "SYNOPTIC definition";
:version = 1.0;
// In general:
//
// The syn2nc decoder is dependant on the netCDF variables names
// because it reads the cdl file to determine the variables to be
// included in the netcdf file. A user can comment out or delete
// variables not to be included in the output file with exceptions,
// the variables 'rep_type', 'wmoId' must be included.
// The WMO Manual on Codes #306 FM 12-X and FM 18-IX was used for some
// variable definitions and all tables references are also from the same
// manual.
//
// Units must be compatible with UDUNITS and consistent for a given
// variable (ie. all temperatures written out in degrees C, even though
// they are reported in C or F). That's why the "units" attribute is
// critical for numeric variables that may be used in calculations.
//
}
On Wed, 7 Jul 1999, Unidata Support wrote:
> >To: address@hidden
> >From: Peter Neilley <address@hidden>
> >Subject: cdl file for 6-hr synoptic reports
> >Organization: .
> >Keywords: 199907072012.OAA01549
>
> We downloaded a copy of a netcdf cdl file from the Unidata web
> page. Looking over it, it appears that wind speed and direction
> are missing. There are fields for the "Highest mean wind speed",
> "Buoy/Ship Speed", and "Buoy/SHip Direction", but apparently no
> provision for wind speed and direction. Is it possible that the
> ship direction/speed is misnamed for the wind direction and speed?
>
> We are decoding synoptics into netcdf files using the Unidata
> decoder and are decifering the output now. Insight appreciated.
>
> Peter Neilley, NCAR/RAP
> address@hidden
> 303-497-8446
>
===============================================================================
Robb Kambic Unidata Program Center
Software Engineer III Univ. Corp for Atmospheric Research
address@hidden WWW: http://www.unidata.ucar.edu/
===============================================================================
