netcdf avn-q { // 126 Wave, 18 Layer Spectral Model Aviation Run // on Lambert conformal CONUS grid dimensions: record = UNLIMITED ; // (reference time, forecast time) level = 10 ; // isobaric levels for most parameters level_c = 4 ; // isobaric levels for absolute vorticity level_r = 5 ; // isobaric levels for relative humidity lpdg = 6 ; // boundary layer levels fhg = 2 ; // fixed height above ground levels ls_all = 4 ; // whole atmosphere layer x = 93 ; y = 65 ; datetime_len = 21 ; // string length for datetime strings nmodels = 2 ; // both AVN and SSIAVN models accum = 2 ; // time range for accumulations nav = 1 ; // For navigation. Variables that use // this dimension define a mapping between // (x, y) indices and (lat, lon) coords. nav_len = 100 ; // max string length for navigation strings variables: double reftime(record) ; // reference time of the model reftime:long_name = "reference time" ; reftime:units = "hours since 1992-1-1" ; double valtime(record) ; // forecast time ("valid" time) valtime:long_name = "valid time" ; valtime:units = "hours since 1992-1-1" ; :record = "reftime, valtime" ; // "dimension attribute" -- means // (reftime, valtime) uniquely // determine record char datetime(record, datetime_len) ; // derived from reftime datetime:long_name = "reference date and time" ; // units YYYY-MM-DD hh:mm:ssZ (ISO 8601) float valtime_offset(record) ; // derived as valtime-reftime valtime_offset:long_name = "hours from reference time" ; valtime_offset:units = "hours" ; float level(level) ; level:long_name = "level" ; level:units = "hectopascals" ; float level_c(level_c) ; level_c:long_name = "level subset" ; level_c:units = "hectopascals" ; float level_r(level_r) ; level_r:long_name = "level subset" ; level_r:units = "hectopascals" ; :lpdg = "lpdg_bot, lpdg_top" ; // (lpdg_bot, lpdg_top) uniquely // determines lpdg float lpdg_bot(lpdg) ; lpdg_bot:long_name = "bottom level of boundary layer between 2 levels at specified pressure differences from ground to levels" ; lpdg_bot:units = "hectopascals" ; float lpdg_top(lpdg) ; lpdg_top:long_name = "top level of boundary layer between 2 levels at specified pressure differences from ground to levels" ; lpdg_top:units = "hectopascals" ; float fhg(fhg) ; // fixed height above ground fhg:long_name = "fixed height above ground" ; fhg:units = "meters" ; :ls_all = "ls_all_bot, ls_all_top" ; float ls_all_bot(ls_all) ; ls_all_bot:long_name = "bottom level of atmosphere between 2 sigma levels" ; ls_all_bot:units = "" ; float ls_all_top(ls_all) ; ls_all_top:long_name = "top level of atmosphere between 2 sigma levels" ; ls_all_top:units = "" ; long model_id(nmodels) ; model_id:long_name = "generating process ID number" ; // navigation variables all use nav dimension char nav_model(nav, nav_len) ; // navigation parameterization nav_model:long_name = "navigation model name" ; int grid_type_code(nav) ; grid_type_code:long_name = "GRIB-1 GDS data representation type" ; char grid_type(nav, nav_len) ; grid_type:long_name = "GRIB-1 grid type" ; char grid_name(nav, nav_len) ; grid_name:long_name = "grid name" ; int grid_center(nav) ; grid_center:long_name = "GRIB-1 originating center ID" ; int grid_number(nav) ; grid_number:long_name = "GRIB-1 catalogued grid number" ; char earth_shape(nav, nav_len) ; earth_shape:long_name = "assumed earth shape" ; char x_dim(nav, nav_len) ; x_dim:long_name = "x dimension name" ; char y_dim(nav, nav_len) ; y_dim:long_name = "y dimension name" ; int Nx(nav) ; Nx:long_name = "number of points along x-axis" ; int Ny(nav) ; Ny:long_name = "number of points along y-axis" ; float La1(nav) ; La1:long_name = "latitude of first grid point" ; La1:units = "degrees_north" ; float Lo1(nav) ; Lo1:long_name = "longitude of first grid point" ; Lo1:units = "degrees_east" ; byte ResCompFlag(nav) ; ResCompFlag:long_name = "resolution and component flags" ; float Lov(nav) ; Lov:long_name = "orientation of the grid" ; Lov:units = "degrees_east" ; float Dx(nav) ; Dx:long_name = "x-direction grid length" ; Dx:units = "m" ; float Dy(nav) ; Dy:long_name = "y-direction grid length" ; Dy:units = "m" ; byte ProjFlag(nav) ; ProjFlag:long_name = "projection center flag" ; float Latin1(nav) ; Latin1:long_name = "first intersecting latitude" ; Latin1:units = "degrees_north" ; float Latin2(nav) ; Latin2:long_name = "second intersecting latitude" ; Latin2:units = "degrees_north" ; float SpLat(nav) ; SpLat:long_name = "Latitude of the southern pole" ; SpLat:units = "degrees_north" ; float SpLon(nav) ; SpLon:long_name = "Longitude of the southern pole" ; SpLon:units = "degrees_east" ; // end of navigation variables float P_trop(record, y, x) ; P_trop:long_name = "pressure at tropopause" ; P_trop:units = "Pa" ; P_trop:_FillValue = -9999.f ; P_trop:navigation = "nav" ; float P_msl(record, y, x) ; P_msl:long_name = "pressure reduced to MSL" ; P_msl:units = "Pa" ; P_msl:_FillValue = -9999.f ; P_msl:navigation = "nav" ; float P_sfc(record, y, x) ; P_sfc:long_name = "pressure at surface" ; P_sfc:units = "Pa" ; P_sfc:_FillValue = -9999.f ; P_sfc:navigation = "nav" ; float RH(record, level_r, y, x) ; RH:long_name = "relative humidity" ; RH:units = "percent" ; RH:_FillValue = -9999.f ; RH:navigation = "nav" ; float T(record, level, y, x) ; T:long_name = "temperature" ; T:units = "degK" ; T:_FillValue = -9999.f ; T:navigation = "nav" ; float T_trop(record, y, x) ; T_trop:long_name = "temperature at tropopause" ; T_trop:units = "degK" ; T_trop:_FillValue = -9999.f ; T_trop:navigation = "nav" ; float Z(record, level, y, x) ; Z:long_name = "geopotential height" ; Z:units = "gp m" ; Z:_FillValue = -9999.f ; Z:navigation = "nav" ; // georeference info float u(record, level, y, x) ; u:long_name = "u-component of wind" ; u:units = "meters/second" ; u:_FillValue = -9999.f ; u:navigation = "nav" ; float LI(record, y, x) ; LI:long_name = "lifted index" ; LI:units = "degK" ; LI:_FillValue = -9999.f ; LI:navigation = "nav" ; float u_trop(record, y, x) ; u_trop:long_name = "u-component of wind at tropopause" ; u_trop:units = "meters/second" ; u_trop:_FillValue = -9999.f ; u_trop:navigation = "nav" ; float v(record, level, y, x) ; v:long_name = "v-component of wind" ; v:units = "meters/second" ; v:_FillValue = -9999.f ; v:navigation = "nav" ; float v_trop(record, y, x) ; v_trop:long_name = "v-component of wind at tropopause" ; v_trop:units = "meters/second" ; v_trop:_FillValue = -9999.f ; v_trop:navigation = "nav" ; float omega(record, level, y, x) ; omega:long_name = "pressure vertical velocity" ; omega:units = "Pa/s" ; omega:_FillValue = -9999.f ; omega:navigation = "nav" ; // georeference info float PRECIP(record, y, x) ; PRECIP:long_name = "total precipitation over accumulation interval" ; PRECIP:units = "kg/m2" ; PRECIP:_FillValue = -9999.f ; PRECIP:navigation = "nav" ; float PRECIP_accum_times(record, accum) ; PRECIP_accum_times:long_name = "precipitation accumulation interval" ; PRECIP_accum_times:units = "hours" ; PRECIP_accum_times:_FillValue = -9999.f ; float pr_water_atm(record, y, x) ; pr_water_atm:long_name = "precipitable water" ; pr_water_atm:units = "kg/m2" ; pr_water_atm:_FillValue = -9999.f ; pr_water_atm:navigation = "nav" ; float absvor(record, level_c, y, x) ; absvor:long_name = "absolute vorticity" ; absvor:units = "1/s" ; absvor:_FillValue = -9999.f ; absvor:navigation = "nav" ; float RH_ls(record, ls_all, y, x) ; RH_ls:long_name = "relative humidity" ; RH_ls:units = "percent" ; RH_ls:_FillValue = -9999.f ; RH_ls:navigation = "nav" ; float RH_lpdg(record, lpdg, y, x) ; RH_lpdg:long_name = "relative humidity in boundary layer" ; RH_lpdg:units = "percent" ; RH_lpdg:_FillValue = -9999.f ; RH_lpdg:navigation = "nav" ; float u_lpdg(record, lpdg, y, x) ; u_lpdg:long_name = "u-component of wind in boundary layer" ; u_lpdg:units = "meters/second" ; u_lpdg:_FillValue = -9999.f ; u_lpdg:navigation = "nav" ; float v_lpdg(record, lpdg, y, x) ; v_lpdg:long_name = "v-component of wind in boundary layer" ; v_lpdg:units = "meters/second" ; v_lpdg:_FillValue = -9999.f ; v_lpdg:navigation = "nav" ; float T_fhg(record, fhg, y, x) ; T_fhg:long_name = "temperature at fixed height above ground" ; T_fhg:units = "degK" ; T_fhg:_FillValue = -9999.f ; T_fhg:navigation = "nav" ; float vert_sshr_trop(record, y, x) ; vert_sshr_trop:long_name = "vertical speed shear" ; vert_sshr_trop:units = "1/s" ; vert_sshr_trop:_FillValue = -9999.f ; vert_sshr_trop:navigation = "nav" ; // global attributes: :history = "created by gribtonc from HDS broadcast" ; :title = "NCEP Global Product Set" ; :Conventions = "NUWG" ; :version = 0.0 ; // still just a draft data: level = 1000 , 850 , 700 , 500 , 400 , 300 , 250 , 200 , 150 , 100 ; level_c = 250, 500, 700, 850 ; level_r = 850 , 700 , 500 , 400 , 300 ; lpdg_bot = 0, 30, 60, 90, 120, 150 ; lpdg_top = 30, 60, 90, 120, 150, 180 ; fhg = 2, 10 ; ls_all_top = 0.0, 0.44, 0.47, 0.84 ; ls_all_bot = 1.0, 1.0, 1.0, 0.98 ; model_id = 77, 81 ; // Navigation nav_model = "GRIB1" ; grid_type_code = 3 ; grid_type = "Lambert conformal" ; grid_name = "AWIPS grid 211: Regional CONUS" ; grid_center = 7 ; grid_number = 211 ; earth_shape = "oblate spheroid (IAU 1965)" ; x_dim = "x" ; y_dim = "y" ; Nx = 93 ; Ny = 65 ; La1 = 12.190 ; Lo1 = -133.459 ; ResCompFlag = 8 ; Lov = -95.0 ; Dx = 81270.5 ; Dy = 81270.5 ; ProjFlag = 0 ; Latin1 = 25.0 ; Latin2 = 25.0 ; SpLat = 0.0 ; SpLon = 0.0 ; }