The file containing the LANDSAT-7 thermal channel radiance at sensor, in milliWatts/square meter/steradian/micrometer.
Output data set in 16-bit integer format. The exact type of data output (e.g. temperature, radiance, etc) is determined by the MODE parameter.
The standard VICAR2 output size field. Default will calibrate the entire data set. Example: SIZE = (1,1,200,638)
Starting line (same as SIZE(1)).
Starting sample (same as SIZE(2)).
Number of lines (same as SIZE(3)).
Number of samples (same as SIZE(4)).
This keyword selects the type of decalibatrion to be performed.
There is a choice of three possibilities:
GRAD - (Ground RADiance)
Radiance values of the ground target in the
scene, incorporating atmospheric corrections.
GTEM - (Ground TEMperature)
Kinetic temperature of the ground target, assuming the
emissivity values given by the parameter "E"
BTEM - (Brightness TEMperature)
Brightness temperature of the ground target.
Example: MODE = GRAD
This selects the model atmosphere for which the atmospheric
corrections will be computed. The program uses a version of
MODTRAN as a subroutine, to which AMODEL is passed. The exact
parameters of each model is given in the MODTRAN handbook. The
options in brief:
TR - TRopical model atmosphere
MS - Midlatitude Summer
MW - Midlatitude Winter
SS - Subarctic Summer
SW - Subarctic Winter
ST - U.S. STandard
RS - User supplied (e.g. Radiosonde) model atmosphere
These same abbreviations are used with the HUMID parameter, with
the same meanings.
Example: LMODEL = SW
The ATEMP parameter is used to modify the AMODEL given, with respect to its temperature and pressure profiles. The choices are the same as those given in the AMODEL description and with the same meanings. The ATEMP parameter will only change AMODEL's temperature and pressure profiles and nothing else. Here are the valid strings: TR - TRopical model atmosphere MS - Midlatitude Summer MW - Midlatitude Winter SS - Subarctic Summer SW - Subarctic Winter ST - U.S. STandard Example: ATEMP = MW
The AHUMID parameter is used to modify the AMODEL given, with respect to its water vapor content. The choices are the same as those given in the AMODEL description and with the same meanings. The AHUMID parameter will only change AMODEL's water vapor profile and nothing else. Here are the valid strings: TR - TRopical model atmosphere MS - Midlatitude Summer MW - Midlatitude Winter SS - Subarctic Summer SW - Subarctic Winter ST - U.S. STandard Example: HUMID = MW
The AOZONE parameter is used to modify the AMODEL given, with respect to its ozone concentrations. The choices are the same as those given in the AMODEL description and with the same meanings. The AOZONE parameter will only change AMODEL's ozone concentration profile and nothing else. Here are the valid strings: TR - TRopical model atmosphere MS - Midlatitude Summer MW - Midlatitude Winter SS - Subarctic Summer SW - Subarctic Winter ST - U.S. STandard Example: HUMID = MW
The DATUM is the mean elevation in kilometers of the targeted terrain above mean sea level. A default value of 1 meter is used if the user does not specify the DATUM explicitly. Example: DATUM = 0.2
If the atmospheric model to be used is user-defined (AMODEL=RS), NLAYERS specifies the number of altitudes for which the atmospheric parameters are expressed. NLAYERS has a minimum of 2 and a maximum of 61. It is not used if one of the standard MODTRAN models is selected.
This parameter is used only if the atmospheric model to be used is user-defined (AMODEL=RS). It specifies the altitudes of each of the NLAYERS of atmospheric layers given in the radiosonde data. The proper units are kilometers above mean sea level.
This parameter is used only if the atmospheric model to be used is user-defined (AMODEL=RS). It specifies the pressure (in millibars) of each of the NLAYERS of atmospheric layers given in the radiosonde data.
This parameter is used only if the atmospheric model to be used is user-defined (AMODEL=RS). It specifies the temperature of each of the NLAYERS of atmospheric layers given in the radiosonde data. The units of the temperature profile may be either Celsius (the default), or Kelvin (if the keyword KELVIN has been specified.
This parameter is used only if the atmospheric model to be used is user-defined (AMODEL=RS). It specifies the moisture content of each of the NLAYERS of atmospheric layers given in the radiosonde data. It may be specified in units of dewpoint temperature, grams per cubic meter, or relative humidity, as indicated by the WTYPE parameter.
This parameter is used only if the atmospheric model to be used is user-defined
(AMODEL=RS). It specifies the units used by the WATER parameter to denote
moisture content. The valid values are:
RH for relative humidity (percent of sauration)
DP for dewpoint temperature (degrees Celsius)
and DE for density (grams per cubic meter)
This parameter is used only if the atmospheric model to be used is user-defined
(AMODEL=RS). It specifies the units used by the TEMP parameter to denote
atmospheric temperature. The valid values are:
CELSIUS - the default value
KELVIN
Used to vary the impact of the ozone model in use. All ozone
concentrations are multiplied by this factor prior to atmospheric
parameter computation.
Used to vary the impact of the oxygen model in use. All oxygen
concentrations are multiplied by this factor prior to atmospheric
parameter computation.
Used to vary the impact of the carbon dioxide model in use. All
carbon dioxide concentrations are multiplied by this factor prior to
atmospheric parameter computation.
Used to vary the impact of the sulfur dioxide model in use. All
sulfur dioxide concentrations are multiplied by this factor prior to
atmospheric parameter computation.
Used to vary the impact of the methane model in use. All methane
concentrations are multiplied by this factor prior to atmospheric
parameter computation.
Used to vary the impact of the moisture profile in use. All moisture
concentrations are multiplied by this factor prior to atmospheric
parameter computation.
This is the emissivity assumed when computing the
sky radiance reflected by the ground. In the GTEM mode, these values
are also used to compute the ground kinetic temperature.
If the radiosonde (RS) atmospheric model has been selected, the user may
input the model parameters via the VICAR parameters ALTITUDE, PRESSURE,
TEMP, and WATER, or alternatively, supply an ASCII file containing these
values. If the values are supplied in a file, the name of the file
should be given for the value of RSTABLE.
The file must be organized in the following manner:
Column 1 altitudes in ascending elevations, units are kilometers
above mean sea level
Column 2 pressures in millibars
Column 3 temperatures
Column 4 moisture content
If there are more than 4 columns, the additional columns are ignored.
Column headers are permitted and ignored. The user need not specify
the number of layers, but if more than 61 layers are contained in the
file, the program will abort.
Normally, the report file generated by MODTRAN is discarded at the conclusion of the MODTRAN run. If a dataset name is given as the parameter value to MODFILE, the report of MODTRAN is saved in that dataset.
Normally, the tabular file generated by MODTRAN is discarded at the conclusion of the MODTRAN run. If a dataset name is given as the parameter value to MODTAB, the report of MODTRAN is saved in that dataset.