domanda grafico
Moderatori: erboss, MeteoLive, jackfrost
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prefrontale
- Moderatore con potere di espulsione
- Messaggi: 2635
- Iscritto il: ven nov 28, 2008 10:14 pm
- Località: acqualagna (pu) 220 mt
domanda grafico
chi mi sa dire che cosa indicano questi grafici?
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FALCO
- *Forumista TOP*
- Messaggi: 10089
- Iscritto il: mer gen 17, 2007 4:23 pm
- Località: Parabiago NW..MI. 182slm
...ma non lo sà nessuno 
che ciucci che siamo 
..io mi ero meso d'impegno a studiare i vari grafici dei radiosondaggi, odografi ecc. ecc.,ma ho piantato li..per me è complcatissimo..quindi mi sono fermato al classico...quello sotto.. avevo chiesto anche ad Antonio (pubblico) come si leggesse l'odografo ( il secondo di Prefrontale...forse..),ma non lo sapeva lui ..figutati te se lo capiso io..
...poi la meteo deve esere sempre un piacere se diventa un peso,non è più bello ...
Studiarsi tutta sta roba(in inglese poi,ma anche in italiano..) ,mi vien che 
Sounding Station Parameters and Indices
SLAT Station latitude in degrees
SLON Station longitude in degrees; West longitude is negative
SELV Station elevation in meters
SHOW Showalter index
SHOW = T500 - Tparcel
T500 = Temperature in Celsius at 500 mb
Tparcel = Temperature in Celsius at 500 mb of a parcel lifted from 850 mb
LIFT Lifted index
LIFT = T500 - Tparcel
T500 = temperature in Celsius of the environment at 500 mb
Tparcel = 500 mb temperature in Celsius of a lifted parcel with the average pressure, temperature, and dewpoint of the layer 500 m above the surface
LFTV LIFT computed by using virtual temperature.
SWET SWEAT index
SWET = 12 * TD850 + 20 * TERM2 + 2 * SKT850 + SKT500 + SHEAR
TD850 = Dewpoint in Celsius at 850 mb
TERM2 = MAX ( TOTL - 49, 0 )
TOTL = Total totals index
SKT850 = 850 mb wind speed in knots
SKT500 = 500 mb wind speed in knots
SHEAR = 125 * [ SIN ( DIR500 - DIR850 ) + .2 ]
DIR500 = 500 mb wind direction
DIR850 = 850 mb wind direction
KINX K index
KINX = ( T850 - T500 ) + TD850 - ( T700 - TD700 )
T850 = Temperature in Celsius at 850 mb
T500 = Temperature in Celsius at 500 mb
TD850 = Dewpoint in Celsius at 850 mb
T700 = Temperature in Celsius at 700 mb
TD700 = Dewpoint in Celsius at 700 mb
CTOT Cross Totals index
CTOT = TD850 - T500
TD850 = Dewpoint in Celsius at 850 mb
T500 = Temperature in Celsius at 500 mb
VTOT Vertical Totals index
VTOT = T850 - T500
T850 = Temperature in Celsius at 850 mb
T500 = Temperature in Celsius at 500 mb
TOTL Total Totals index
TOTL = ( T850 - T500 ) + ( TD850 - T500 )
T850 = Temperature in Celsius at 850 mb
TD850 = Dewpoint in Celsius at 850 mb
T500 = Temperature in Celsius at 500 mb
CAPE Convective Available Potential Energy (J/kg)
CAPE = GRAVTY * SUMP ( DELZ * ( TP - TE ) / TE )
SUMP = sum over sounding layers from LFCT to EQLV for which ( TP - TE ) is greater than zero
DELZ = incremental depth
TP = temperature of a parcel from the lowest 500 m of the atmosphere, raised dry adiabatically to the LCL and moist adiabatically thereafter
TE = temperature of the environment
CAPV CAPE computed by using virtual temperature.
CAPV = GRAVTY * SUMP ( DELZ * ( TVP - TVE ) / TVE )
SUMP = sum over sounding layers from LFCV to EQTV for which ( TVP - TVE ) is greater than zero
DELZ = incremental depth
TVP = virtual temperature. of a parcel from the lowest 500 m of the atmosphere, raised dry adiabatically to the LCL and moist adiabatically thereafter
TVE = virtual temperature. of the environment
CINS Convective Inhibition (J/kg)
CINS = GRAVTY * SUMN ( DELZ * ( TP - TE ) / TE )
SUMN = sum over sounding layers from top of the mixed layer to LFCT for which ( TP - TE ) is less than zero.
DELZ = incremental depth
TP = temperature of a parcel from the lowest 500 m of the atmosphere, raised dry adiabatically to the LCL and moist adiabatically thereafter
TE = temperature of the environment
CINV CINS computed by using virtual temperature.
CINV = GRAVTY * SUMN ( DELZ * ( TVP - TVE ) / TVE )
SUMN = sum over sounding layers from top of the mixed layer to LFCV for which ( TVP - TVE ) is less than zero.
DELZ = incremental depth
TVP = virtual temperature. of a parcel from the lowest 500 m of the atmosphere, raised dry adiabatically to the LCL and moist adiabatically thereafter
TVE = virtual temperature. of the environment
EQLV Equilibrium level (hPa)
EQLV = level at which a parcel from the lowest 500 m of the atmosphere is raised dry adiabatically to the LCL and moist adiabatically to a level above which the temperature of the parcel is the same as the environment. If more than one Equilibrium Level exists, the highest one is chosen.
EQTV EQLV computed by using virtual temperature.
LFCT Level of Free Convection (hPa) by comparing temperature between a parcel and the environment
LFCT = level at which a parcel from the lowest 500 m of the atmosphere is raised dry adiabatically to LCL and moist adiabatically to the level above which the parcel is positively buoyant. If more than one LFCT exists, the lowest level is chosen. If the parcel is positively bouyant throughout the sounding, the LFCT is set to be the same as the LCLP.
LFCV LFCT computed by using virtual temperature.
BRCH Bulk Richardson number
BRCH = CAPE / ( 0.5 * U**2 )
CAPE = Convective Available Potential Energy
U = magnitude of shear ( u2 - u1, v2 - v1 )
u1,v1 = average u,v in the lowest 500 m
u2,v2 = average u,v in the lowest 6000 m
BRCV BRCH computed by using CAPV
BRCV = CAPV / ( 0.5 * U**2 )
CAPV = CAPE computed by using virtual temperature.
U = magnitude of shear ( u2 - u1, v2 - v1 )
u1,v1 = average u,v in the lowest 500 m
u2,v2 = average u,v in the lowest 6000 m
LCLT Temperature (K) at the LCL, lifted condensation level, from an average of the lowest 500 meters.
LCLT = [1 / ( 1 / ( DWPK - 56 ) + LN ( TMPK / DWPK ) / 800 )] + 56
LCLP Pressure (hPa) at the LCL, lifted condensation level, from an average of the lowest 500 meters.
LCLP = PRES * ( LCLT / ( TMPC + 273.15 ) ) ** ( 1 / KAPPA )
Poisson's equation
MLTH Mean mixed layer THTA (K)
MLTH = average THTA in the lowest 500 m
MLMR Mean mixed layer MIXR (g/kg)
MLMR = average MIXR in the lowest 500 m
THTK 1000 mb to 500 mb thickness (meter)
THTK = ( Z500 - Z1000 )
Z500 = Height of the 500 mb surface
Z1000 = Height of the 1000 mb surface
PWAT Precipitable water (mm) for the entire sounding
es. di Mixing Ratio— e relativa formulaThe ratio of the mass of a variable atmospheric constituent to the mass of dry air.
If not otherwise indicated, the term normally refers to water vapor. For many purposes, the mixing ratio may be approximated by the specific humidity. Either r or w is commonly used to symbolize water vapor mixing ratio, with r used for thermodynamic terms in this glossary. In terms of the pressure p and vapor pressure e, the mixing ratio r is..
che ciucci che siamo ..io mi ero meso d'impegno a studiare i vari grafici dei radiosondaggi, odografi ecc. ecc.,ma ho piantato li..per me è complcatissimo..quindi mi sono fermato al classico...quello sotto.. avevo chiesto anche ad Antonio (pubblico) come si leggesse l'odografo ( il secondo di Prefrontale...forse..),ma non lo sapeva lui ..figutati te se lo capiso io.. ...poi la meteo deve esere sempre un piacere se diventa un peso,non è più bello ...
Codice: Seleziona tutto
16245 LIRE Pratica Di Mare Observations at 06Z 05 Jan 2005
-----------------------------------------------------------------------------
PRES HGHT TEMP DWPT RELH MIXR DRCT SKNT THTA THTE THTV
hPa m C C % g/kg deg knot K K K
-----------------------------------------------------------------------------
1028.0 32 4.0 0.9 80 3.99 0 0 275.0 286.0 275.6
1025.0 56 4.6 0.9 77 4.00 19 3 275.8 286.9 276.5
1020.0 97 5.0 1.3 77 4.14 52 8 276.6 288.1 277.3
1018.0 113 6.3 1.7 72 4.26 65 10 278.0 289.9 278.8
1013.0 155 9.6 2.6 62 4.58 48 12 281.7 294.6 282.5
1010.0 180 9.6 2.6 62 4.59 37 13 281.9 294.9 282.7
1005.0 222 9.6 2.6 62 4.61 20 15 282.4 295.4 283.1
1000.0 264 9.6 2.6 62 4.64 10 17 282.8 295.9 283.5
981.0 422 8.5 2.0 64 4.53 5 21 283.2 296.1 284.0
937.0 800 5.9 0.6 69 4.28 335 21 284.3 296.6 285.1
925.0 906 5.2 0.2 70 4.22 330 20 284.6 296.7 285.4
913.0 1013 4.4 -0.6 70 4.03 330 22 284.9 296.5 285.6
902.0 1112 6.8 -9.2 31 2.12 330 24 288.3 294.8 288.7
896.0 1167 7.3 -11.5 25 1.78 330 25 289.4 294.9 289.7
881.0 1307 8.6 -17.4 14 1.11 326 21 292.1 295.7 292.3
867.0 1439 8.8 -14.2 18 1.48 323 18 293.7 298.4 293.9
856.0 1545 8.4 -16.5 15 1.23 320 15 294.4 298.3 294.6
850.0 1603 8.2 -17.8 14 1.12 315 13 294.7 298.3 294.9
840.0 1699 7.5 -17.9 14 1.12 305 12 295.0 298.7 295.2
818.0 1914 6.1 -18.2 16 1.12 280 14 295.7 299.4 295.9
728.0 2860 -0.3 -19.3 22 1.15 308 16 298.8 302.5 299.0
722.0 2926 -0.6 -20.2 21 1.07 310 16 299.1 302.7 299.3
700.0 3173 -1.7 -23.7 17 0.81 305 19 300.6 303.3 300.7
691.0 3276 -2.2 -24.3 16 0.78 300 21 301.2 303.8 301.3
644.0 3834 -4.7 -27.7 15 0.61 312 25 304.4 306.6 304.5
634.0 3954 -5.7 -28.6 15 0.57 315 26 304.6 306.6 304.7
573.0 4734 -12.3 -34.7 14 0.35 335 16 305.8 307.1 305.9
539.0 5205 -16.3 -38.3 13 0.26 331 25 306.5 307.4 306.5
533.0 5290 -15.3 -42.3 8 0.17 330 27 308.6 309.3 308.7Sounding Station Parameters and Indices
SLAT Station latitude in degrees
SLON Station longitude in degrees; West longitude is negative
SELV Station elevation in meters
SHOW Showalter index
SHOW = T500 - Tparcel
T500 = Temperature in Celsius at 500 mb
Tparcel = Temperature in Celsius at 500 mb of a parcel lifted from 850 mb
LIFT Lifted index
LIFT = T500 - Tparcel
T500 = temperature in Celsius of the environment at 500 mb
Tparcel = 500 mb temperature in Celsius of a lifted parcel with the average pressure, temperature, and dewpoint of the layer 500 m above the surface
LFTV LIFT computed by using virtual temperature.
SWET SWEAT index
SWET = 12 * TD850 + 20 * TERM2 + 2 * SKT850 + SKT500 + SHEAR
TD850 = Dewpoint in Celsius at 850 mb
TERM2 = MAX ( TOTL - 49, 0 )
TOTL = Total totals index
SKT850 = 850 mb wind speed in knots
SKT500 = 500 mb wind speed in knots
SHEAR = 125 * [ SIN ( DIR500 - DIR850 ) + .2 ]
DIR500 = 500 mb wind direction
DIR850 = 850 mb wind direction
KINX K index
KINX = ( T850 - T500 ) + TD850 - ( T700 - TD700 )
T850 = Temperature in Celsius at 850 mb
T500 = Temperature in Celsius at 500 mb
TD850 = Dewpoint in Celsius at 850 mb
T700 = Temperature in Celsius at 700 mb
TD700 = Dewpoint in Celsius at 700 mb
CTOT Cross Totals index
CTOT = TD850 - T500
TD850 = Dewpoint in Celsius at 850 mb
T500 = Temperature in Celsius at 500 mb
VTOT Vertical Totals index
VTOT = T850 - T500
T850 = Temperature in Celsius at 850 mb
T500 = Temperature in Celsius at 500 mb
TOTL Total Totals index
TOTL = ( T850 - T500 ) + ( TD850 - T500 )
T850 = Temperature in Celsius at 850 mb
TD850 = Dewpoint in Celsius at 850 mb
T500 = Temperature in Celsius at 500 mb
CAPE Convective Available Potential Energy (J/kg)
CAPE = GRAVTY * SUMP ( DELZ * ( TP - TE ) / TE )
SUMP = sum over sounding layers from LFCT to EQLV for which ( TP - TE ) is greater than zero
DELZ = incremental depth
TP = temperature of a parcel from the lowest 500 m of the atmosphere, raised dry adiabatically to the LCL and moist adiabatically thereafter
TE = temperature of the environment
CAPV CAPE computed by using virtual temperature.
CAPV = GRAVTY * SUMP ( DELZ * ( TVP - TVE ) / TVE )
SUMP = sum over sounding layers from LFCV to EQTV for which ( TVP - TVE ) is greater than zero
DELZ = incremental depth
TVP = virtual temperature. of a parcel from the lowest 500 m of the atmosphere, raised dry adiabatically to the LCL and moist adiabatically thereafter
TVE = virtual temperature. of the environment
CINS Convective Inhibition (J/kg)
CINS = GRAVTY * SUMN ( DELZ * ( TP - TE ) / TE )
SUMN = sum over sounding layers from top of the mixed layer to LFCT for which ( TP - TE ) is less than zero.
DELZ = incremental depth
TP = temperature of a parcel from the lowest 500 m of the atmosphere, raised dry adiabatically to the LCL and moist adiabatically thereafter
TE = temperature of the environment
CINV CINS computed by using virtual temperature.
CINV = GRAVTY * SUMN ( DELZ * ( TVP - TVE ) / TVE )
SUMN = sum over sounding layers from top of the mixed layer to LFCV for which ( TVP - TVE ) is less than zero.
DELZ = incremental depth
TVP = virtual temperature. of a parcel from the lowest 500 m of the atmosphere, raised dry adiabatically to the LCL and moist adiabatically thereafter
TVE = virtual temperature. of the environment
EQLV Equilibrium level (hPa)
EQLV = level at which a parcel from the lowest 500 m of the atmosphere is raised dry adiabatically to the LCL and moist adiabatically to a level above which the temperature of the parcel is the same as the environment. If more than one Equilibrium Level exists, the highest one is chosen.
EQTV EQLV computed by using virtual temperature.
LFCT Level of Free Convection (hPa) by comparing temperature between a parcel and the environment
LFCT = level at which a parcel from the lowest 500 m of the atmosphere is raised dry adiabatically to LCL and moist adiabatically to the level above which the parcel is positively buoyant. If more than one LFCT exists, the lowest level is chosen. If the parcel is positively bouyant throughout the sounding, the LFCT is set to be the same as the LCLP.
LFCV LFCT computed by using virtual temperature.
BRCH Bulk Richardson number
BRCH = CAPE / ( 0.5 * U**2 )
CAPE = Convective Available Potential Energy
U = magnitude of shear ( u2 - u1, v2 - v1 )
u1,v1 = average u,v in the lowest 500 m
u2,v2 = average u,v in the lowest 6000 m
BRCV BRCH computed by using CAPV
BRCV = CAPV / ( 0.5 * U**2 )
CAPV = CAPE computed by using virtual temperature.
U = magnitude of shear ( u2 - u1, v2 - v1 )
u1,v1 = average u,v in the lowest 500 m
u2,v2 = average u,v in the lowest 6000 m
LCLT Temperature (K) at the LCL, lifted condensation level, from an average of the lowest 500 meters.
LCLT = [1 / ( 1 / ( DWPK - 56 ) + LN ( TMPK / DWPK ) / 800 )] + 56
LCLP Pressure (hPa) at the LCL, lifted condensation level, from an average of the lowest 500 meters.
LCLP = PRES * ( LCLT / ( TMPC + 273.15 ) ) ** ( 1 / KAPPA )
Poisson's equation
MLTH Mean mixed layer THTA (K)
MLTH = average THTA in the lowest 500 m
MLMR Mean mixed layer MIXR (g/kg)
MLMR = average MIXR in the lowest 500 m
THTK 1000 mb to 500 mb thickness (meter)
THTK = ( Z500 - Z1000 )
Z500 = Height of the 500 mb surface
Z1000 = Height of the 1000 mb surface
PWAT Precipitable water (mm) for the entire sounding
es. di Mixing Ratio— e relativa formulaThe ratio of the mass of a variable atmospheric constituent to the mass of dry air.
If not otherwise indicated, the term normally refers to water vapor. For many purposes, the mixing ratio may be approximated by the specific humidity. Either r or w is commonly used to symbolize water vapor mixing ratio, with r used for thermodynamic terms in this glossary. In terms of the pressure p and vapor pressure e, the mixing ratio r is..