Technology Transfer Network
Emission Measurement Center Spectral Database
AEDC Calculated Spectra
| Transmission spectra were calculated using the HITRAN96 spectral
database and a modified version of the Fast Atmospheric Spectral Code
(FASCODE). These trasmission spectra were degraded using triangle
apodization and converted to absorbance (base 10). Pressure was set
to 760 mm Hg (1 Atmosphere). It should be noted that these results
are calculated spectra based on fundamental molecular parameters typically
measured by high resolution spectroscopic techniques. The HITRAN96
data base is primarily used for atmospheric absorption calculations
and was not initially intended for elevated temperature calculations.
However, these spectra should represent to a high degree of accuracy
the spectra anticipated up to 500K. Any error between the calculated
spectrum and the true spectrum will normally increase with increasing
temperature.
Spectra at other resolutions and/or apodizations can be obtained by downloading the .125cm-1 resolution boxcar apodization spectrum and using the DERESOLVE program. INDEXMethane CH4 Carbon Monoxide CO Carbon Dioxide CO2 Sulfur Dioxide SO2 Water H2ONitric Oxide NO Nitrogen Dioxide NO2 Nitrous Oxide N2O Ammonia NH3 Ozone O3 |
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| Specie | Filename (*.SPC) |
Nominal Resolution (cm-1) |
Temp (Deg-K) |
Path (meters) |
Concentration (ppm) |
Path Integrated Concentration (ppm-meters) |
Apodization |
| Methane CH4 | ch4300 | 0.125 | 300 | 30.0 | 1.68 | 50.4 | Boxcar |
| Methane CH4 | ch4300a | 0.125 | 300 | 30.0 | 1.68 | 50.4 | Triangle |
| Methane CH4 | ch4300b | 0.250 | 300 | 30.0 | 1.68 | 50.4 | Triangle |
| Methane CH4 | ch4300c | 0.500 | 300 | 30.0 | 1.68 | 50.4 | Triangle |
| Methane CH4 | ch4300d | 1.000 | 300 | 30.0 | 1.68 | 50.4 | Triangle |
| Methane CH4 | ch4400 | 0.125 | 400 | 30.0 | 1.68 | 50.4 | Boxcar |
| Methane CH4 | ch4400a | 0.125 | 400 | 30.0 | 1.68 | 50.4 | Triangle |
| Methane CH4 | ch4400b | 0.250 | 400 | 30.0 | 1.68 | 50.4 | Triangle |
| Methane CH4 | ch4400c | 0.500 | 400 | 30.0 | 1.68 | 50.4 | Triangle |
| Methane CH4 | ch4400d | 1.000 | 400 | 30.0 | 1.68 | 50.4 | Triangle |
| Methane CH4 | ch4500 | 0.125 | 500 | 30.0 | 1.68 | 50.4 | Boxcar |
| Methane CH4 | ch4500a | 0.125 | 500 | 30.0 | 1.68 | 50.4 | Triangle |
| Methane CH4 | ch4500b | 0.250 | 500 | 30.0 | 1.68 | 50.4 | Triangle |
| Methane CH4 | ch4500c | 0.500 | 500 | 30.0 | 1.68 | 50.4 | Triangle |
| Methane CH4 | ch4500d | 1.000 | 500 | 30.0 | 1.68 | 50.4 | Triangle |
| Specie | Filename (*.SPC) |
Nominal Resolution (cm-1) |
Temp (Deg-K) |
Path (meters) |
Concentration (ppm) |
Path Integrated Concentration (ppm-meters) |
Apodization |
| Carbon Monoxide CO | co300 | 0.125 | 300 | 7.5 | 5.00 | 37.5 | Boxcar |
| Carbon Monoxide CO | co300a | 0.125 | 300 | 7.5 | 5.00 | 37.5 | Triangle |
| Carbon Monoxide CO | co300b | 0.250 | 300 | 7.5 | 5.00 | 37.5 | Triangle |
| Carbon Monoxide CO | co300c | 0.500 | 300 | 7.5 | 5.00 | 37.5 | Triangle |
| Carbon Monoxide CO | co300d | 1.00 | 300 | 7.5 | 5.00 | 37.5 | Triangle |
| Carbon Monoxide CO | co400 | 0.125 | 400 | 7.5 | 5.00 | 37.5 | Boxcar |
| Carbon Monoxide CO | co400a | 0.125 | 400 | 7.5 | 5.00 | 37.5 | Triangle |
| Carbon Monoxide CO | co400b | 0.250 | 400 | 7.5 | 5.00 | 37.5 | Triangle |
| Carbon Monoxide CO | co400c | 0.500 | 400 | 7.5 | 5.00 | 37.5 | Triangle |
| Carbon Monoxide CO | co400d | 1.000 | 400 | 7.5 | 5.00 | 37.5 | Triangle |
| Carbon Monoxide CO | co500 | 0.125 | 500 | 7.5 | 5.00 | 37.5 | Boxcar |
| Carbon Monoxide CO | co500a | 0.125 | 500 | 7.5 | 5.00 | 37.5 | Triangle |
| Carbon Monoxide CO | co500b | 0.250 | 500 | 7.5 | 5.00 | 37.5 | Triangle |
| Carbon Monoxide CO | co500c | 0.500 | 500 | 7.5 | 5.00 | 37.5 | Triangle |
| Carbon Monoxide CO | co500d | 1.000 | 500 | 7.5 | 5.00 | 37.5 | Triangle |
| Specie | Filename (*.SPC) |
Nominal Resolution (cm-1) |
Temp (Deg-K) |
Path (meters) |
Concentration (ppm) |
Path Integrated Concentration (ppm-meters) |
Apodization |
| Carbon Dioxide CO2 | co2300 | 0.125 | 300 | 1.0 | 7.50 | 7.5 | Boxcar |
| Carbon Dioxide CO2 | co2300a | 0.125 | 300 | 1.0 | 7.50 | 7.5 | Triangle |
| Carbon Dioxide CO2 | co2300b | 0.250 | 300 | 1.0 | 7.50 | 7.5 | Triangle |
| Carbon Dioxide CO2 | co2300c | 0.500 | 300 | 1.0 | 7.50 | 7.5 | Triangle |
| Carbon Dioxide CO2 | co2300d | 1.00 | 300 | 1.0 | 7.50 | 7.5 | Triangle |
| Carbon Dioxide CO2 | co2400 | 0.125 | 400 | 1.0 | 7.50 | 7.5 | Boxcar |
| Carbon Dioxide CO2 | co2400a | 0.125 | 400 | 1.0 | 7.50 | 7.5 | Triangle |
| Carbon Dioxide CO2 | co2400b | 0.250 | 400 | 1.0 | 7.50 | 7.5 | Triangle |
| Carbon Dioxide CO2 | co2400c | 0.500 | 400 | 1.0 | 7.50 | 7.5 | Triangle |
| Carbon Dioxide CO2 | co2400d | 1.000 | 400 | 1.0 | 7.50 | 7.5 | Triangle |
| Carbon Dioxide CO2 | co2500 | 0.125 | 500 | 1.0 | 7.50 | 7.5 | Boxcar |
| Carbon Dioxide CO2 | co2500a | 0.125 | 500 | 1.0 | 7.50 | 7.5 | Triangle |
| Carbon Dioxide CO2 | co2500b | 0.250 | 500 | 1.0 | 7.50 | 7.5 | Triangle |
| Carbon Dioxide CO2 | co2500c | 0.500 | 500 | 1.0 | 7.50 | 7.5 | Triangle |
| Carbon Dioxide CO2 | co2500d | 1.000 | 500 | 1.0 | 7.50 | 7.5 | Triangle |
| Specie | Filename (*.SPC) |
Nominal Resolution (cm-1) |
Temp (Deg-K) |
Path (meters) |
Concentration (ppm) |
Path Integrated Concentration (ppm-meters) |
Apodization |
| Water H2O | h2o300 | 0.125 | 300 | 1.0 | 6.0 | 6.0 | Boxcar |
| Water H2O | h2o300a | 0.125 | 300 | 1.0 | 6.0 | 6.0 | Triangle |
| Water H2O | h2o300b | 0.250 | 300 | 1.0 | 6.0 | 6.0 | Triangle |
| Water H2O | h2o300c | 0.500 | 300 | 1.0 | 6.0 | 6.0 | Triangle |
| Water H2O | h2o300d | 1.00 | 300 | 1.0 | 6.0 | 6.0 | Triangle |
| Water H2O | h2o400 | 0.125 | 400 | 1.0 | 6.0 | 6.0 | Boxcar |
| Water H2O | h2o400a | 0.125 | 400 | 1.0 | 6.0 | 6.0 | Triangle |
| Water H2O | h2o400b | 0.250 | 400 | 1.0 | 6.0 | 6.0 | Triangle |
| Water H2O | h2o400c | 0.500 | 400 | 1.0 | 6.0 | 6.0 | Triangle |
| Water H2O | h2o400d | 1.000 | 400 | 1.0 | 6.0 | 6.0 | Triangle |
| Water H2O | h2o500 | 0.125 | 500 | 1.0 | 6.0 | 6.0 | Boxcar |
| Water H2O | h2o500a | 0.125 | 500 | 1.0 | 6.0 | 6.0 | Triangle |
| Water H2O | h2o500b | 0.250 | 500 | 1.0 | 6.0 | 6.0 | Triangle |
| Water H2O | h2o500c | 0.500 | 500 | 1.0 | 6.0 | 6.0 | Triangle |
| Water H2O | h2o500d | 1.000 | 500 | 1.0 | 6.0 | 6.0 | Triangle |
| Specie | Filename (*.SPC) |
Nominal Resolution (cm-1) |
Temp (Deg-K) |
Path (meters) |
Concentration (ppm) |
Path Integrated Concentration (ppm-meters) |
Apodization |
| Ammonia NH3 | nh3300 | 0.125 | 300 | 1.0 | 22.5 | 22.5 | Boxcar |
| Ammonia NH3 | nh3300a | 0.125 | 300 | 1.0 | 22.5 | 22.5 | Triangle |
| Ammonia NH3 | nh3300b | 0.250 | 300 | 1.0 | 22.5 | 22.5 | Triangle |
| Ammonia NH3 | nh3300c | 0.500 | 300 | 1.0 | 22.5 | 22.5 | Triangle |
| Ammonia NH3 | nh3300d | 1.00 | 300 | 1.0 | 22.5 | 22.5 | Triangle |
| Ammonia NH3 | nh3400 | 0.125 | 400 | 1.0 | 22.5 | 22.5 | Boxcar |
| Ammonia NH3 | nh3400a | 0.125 | 400 | 1.0 | 22.5 | 22.5 | Triangle |
| Ammonia NH3 | nh3400b | 0.250 | 400 | 1.0 | 22.5 | 22.5 | Triangle |
| Ammonia NH3 | nh3400c | 0.500 | 400 | 1.0 | 22.5 | 22.5 | Triangle |
| Ammonia NH3 | nh3400d | 1.000 | 400 | 1.0 | 22.5 | 22.5 | Triangle |
| Ammonia NH3 | nh3500 | 0.125 | 500 | 1.0 | 22.5 | 22.5 | Boxcar |
| Ammonia NH3 | nh3500a | 0.125 | 500 | 1.0 | 22.5 | 22.5 | Triangle |
| Ammonia NH3 | nh3500b | 0.250 | 500 | 1.0 | 22.5 | 22.5 | Triangle |
| Ammonia NH3 | nh3500c | 0.500 | 500 | 1.0 | 22.5 | 22.5 | Triangle |
| Ammonia NH3 | nh3500d | 1.000 | 500 | 1.0 | 22.5 | 22.5 | Triangle |
| Specie | Filename (*.SPC) |
Nominal Resolution (cm-1) |
Temp (Deg-K) |
Path (meters) |
Concentration (ppm) |
Path Integrated Concentration (ppm-meters) |
Apodization |
| Nitric Oxide NO | no300 | 0.125 | 300 | 30.0 | 5.0 | 150.0 | Boxcar |
| Nitric Oxide NO | no300a | 0.125 | 300 | 30.0 | 5.0 | 150.0 | Triangle |
| Nitric Oxide NO | no300b | 0.250 | 300 | 30.0 | 5.0 | 150.0 | Triangle |
| Nitric Oxide NO | no300c | 0.500 | 300 | 30.0 | 5.0 | 150.0 | Triangle |
| Nitric Oxide NO | no300d | 1.0 | 300 | 30.0 | 5.0 | 150.0 | Triangle |
| Nitric Oxide NO | no400 | 0.125 | 400 | 30.0 | 5.0 | 150.0 | Boxcar |
| Nitric Oxide NO | no400a | 0.125 | 400 | 30.0 | 5.0 | 150.0 | Triangle |
| Nitric Oxide NO | no400b | 0.250 | 400 | 30.0 | 5.0 | 150.0 | Triangle |
| Nitric Oxide NO | no400c | 0.500 | 400 | 30.0 | 5.0 | 150.0 | Triangle |
| Nitric Oxide NO | no400d | 1.0 | 400 | 30.0 | 5.0 | 150.0 | Triangle |
| Nitric Oxide NO | no500 | 0.125 | 500 | 30.0 | 5.0 | 150.0 | Boxcar |
| Nitric Oxide NO | no500a | 0.125 | 500 | 30.0 | 5.0 | 150.0 | Triangle |
| Nitric Oxide NO | no500b | 0.250 | 500 | 30.0 | 5.0 | 150.0 | Triangle |
| Nitric Oxide NO | no500c | 0.500 | 500 | 30.0 | 5.0 | 150.0 | Triangle |
| Nitric Oxide NO | no500d | 1.0 | 500 | 30.0 | 5.0 | 150.0 | Triangle |
| Specie | Filename (*.SPC) |
Nominal Resolution (cm-1) |
Temp (Deg-K) |
Path (meters) |
Concentration (ppm) |
Path Integrated Concentration (ppm-meters) |
Apodization |
| Nitrogen Dioxide NO2 | no2300 | 0.125 | 300 | 6.0 | 5.0 | 30.0 | Boxcar |
| Nitrogen Dioxide NO2 | no2300a | 0.125 | 300 | 6.0 | 5.0 | 30.0 | Triangle |
| Nitrogen Dioxide NO2 | no2300b | 0.250 | 300 | 6.0 | 5.0 | 30.0 | Triangle |
| Nitrogen Dioxide NO2 | no2300c | 0.500 | 300 | 6.0 | 5.0 | 30.0 | Triangle |
| Nitrogen Dioxide NO2 | no2300d | 1.0 | 300 | 6.0 | 5.0 | 30.0 | Triangle |
| Nitrogen Dioxide NO2 | no2400 | 0.125 | 400 | 6.0 | 5.0 | 30.0 | Boxcar |
| Nitrogen Dioxide NO2 | no2400a | 0.125 | 400 | 6.0 | 5.0 | 30.0 | Triangle |
| Nitrogen Dioxide NO2 | no2400b | 0.250 | 400 | 6.0 | 5.0 | 30.0 | Triangle |
| Nitrogen Dioxide NO2 | no2400c | 0.500 | 400 | 6.0 | 5.0 | 30.0 | Triangle |
| Nitrogen Dioxide NO2 | no2400d | 1.0 | 400 | 6.0 | 5.0 | 30.0 | Triangle |
| Nitrogen Dioxide NO2 | no2500 | 0.125 | 500 | 6.0 | 5.0 | 30.0 | Boxcar |
| Nitrogen Dioxide NO2 | no2500a | 0.125 | 500 | 6.0 | 5.0 | 30.0 | Triangle |
| Nitrogen Dioxide NO2 | no2500b | 0.250 | 500 | 6.0 | 5.0 | 30.0 | Triangle |
| Nitrogen Dioxide NO2 | no2500c | 0.500 | 500 | 6.0 | 5.0 | 30.0 | Triangle |
| Nitrogen Dioxide NO2 | no2500d | 1.0 | 500 | 6.0 | 5.0 | 30.0 | Triangle |
| Specie | Filename (*.SPC) |
Nominal Resolution (cm-1) |
Temp (Deg-K) |
Path (meters) |
Concentration (ppm) |
Path Integrated Concentration (ppm-meters) |
Apodization |
| Nitrous Oxide N2O | n2o300 | 0.125 | 300 | 1.0 | 25.0 | 25.0 | Boxcar |
| Nitrous Oxide N2O | n2o300a | 0.125 | 300 | 1.0 | 25.0 | 25.0 | Triangle |
| Nitrous Oxide N2O | n2o300b | 0.250 | 300 | 1.0 | 25.0 | 25.0 | Triangle |
| Nitrous Oxide N2O | n2o300c | 0.500 | 300 | 1.0 | 25.0 | 25.0 | Triangle |
| Nitrous Oxide N2O | n2o300d | 1.0 | 300 | 1.0 | 25.0 | 25.0 | Triangle |
| Nitrous Oxide N2O | n2o400 | 0.125 | 400 | 1.0 | 25.0 | 25.0 | Boxcar |
| Nitrous Oxide N2O | n2o400a | 0.125 | 400 | 1.0 | 25.0 | 25.0 | Triangle |
| Nitrous Oxide N2O | n2o400b | 0.250 | 400 | 1.0 | 25.0 | 25.0 | Triangle |
| Nitrous Oxide N2O | n2o400c | 0.500 | 400 | 1.0 | 25.0 | 25.0 | Triangle |
| Nitrous Oxide N2O | n2o400d | 1.0 | 400 | 1.0 | 25.0 | 25.0 | Triangle |
| Nitrous Oxide N2O | n2o500 | 0.125 | 500 | 1.0 | 25.0 | 25.0 | Boxcar |
| Nitrous Oxide N2O | n2o500a | 0.125 | 500 | 1.0 | 25.0 | 25.0 | Triangle |
| Nitrous Oxide N2O | n2o500b | 0.250 | 500 | 1.0 | 25.0 | 25.0 | Triangle |
| Nitrous Oxide N2O | n2o500c | 0.500 | 500 | 1.0 | 25.0 | 25.0 | Triangle |
| Nitrous Oxide N2O | n2o500d | 1.0 | 500 | 1.0 | 25.0 | 25.0 | Triangle |
| Specie | Filename (*.SPC) |
Nominal Resolution (cm-1) |
Temp (Deg-K) |
Path (meters) |
Concentration (ppm) |
Path Integrated Concentration (ppm-meters) |
Apodization |
| Ozone O3 | o3300 | 0.125 | 300 | 100.0 | 1.0 | 100.0 | Boxcar |
| Ozone O3 | o3300a | 0.125 | 300 | 100.0 | 1.0 | 100.0 | Triangle |
| Ozone O3 | o3300b | 0.250 | 300 | 100.0 | 1.0 | 100.0 | Triangle |
| Ozone O3 | o3300c | 0.500 | 300 | 100.0 | 1.0 | 100.0 | Triangle |
| Ozone O3 | o3300d | 1.0 | 300 | 100.0 | 1.0 | 100.0 | Triangle |
| Ozone O3 | o3400 | 0.125 | 400 | 100.0 | 1.0 | 100.0 | Boxcar |
| Ozone O3 | o3400a | 0.125 | 400 | 100.0 | 1.0 | 100.0 | Triangle |
| Ozone O3 | o3400b | 0.250 | 400 | 100.0 | 1.0 | 100.0 | Triangle |
| Ozone O3 | o3400c | 0.500 | 400 | 100.0 | 1.0 | 100.0 | Triangle |
| Ozone O3 | o3400d | 1.0 | 400 | 100.0 | 1.0 | 100.0 | Triangle |
| Ozone O3 | o3500 | 0.125 | 500 | 100.0 | 1.0 | 100.0 | Boxcar |
| Ozone O3 | o3500a | 0.125 | 500 | 100.0 | 1.0 | 100.0 | Triangle |
| Ozone O3 | o3500b | 0.250 | 500 | 100.0 | 1.0 | 100.0 | Triangle |
| Ozone O3 | o3500c | 0.500 | 500 | 100.0 | 1.0 | 100.0 | Triangle |
| Ozone O3 | o3500d | 1.0 | 500 | 100.0 | 1.0 | 100.0 | Triangle |
| Specie | Filename (*.SPC) |
Nominal Resolution (cm-1) |
Temp (Deg-K) |
Path (meters) |
Concentration (ppm) |
Path Integrated Concentration (ppm-meters) |
Apodization |
| Sulfur Dioxide SO2 | so2300 | 0.125 | 300 | 16.0 | 5.0 | 80.0 | Boxcar |
| Sulfur Dioxide SO2 | so2300a | 0.125 | 300 | 16.0 | 5.0 | 80.0 | Triangle |
| Sulfur Dioxide SO2 | so2300b | 0.250 | 300 | 16.0 | 5.0 | 80.0 | Triangle |
| Sulfur Dioxide SO2 | so2300c | 0.500 | 300 | 16.0 | 5.0 | 80.0 | Triangle |
| Sulfur Dioxide SO2 | so2300d | 1.0 | 300 | 16.0 | 5.0 | 80.0 | Triangle |
| Sulfur Dioxide SO2 | so2400 | 0.125 | 400 | 16.0 | 5.0 | 80.0 | Boxcar |
| Sulfur Dioxide SO2 | so2400a | 0.125 | 400 | 16.0 | 5.0 | 80.0 | Triangle |
| Sulfur Dioxide SO2 | so2400b | 0.250 | 400 | 16.0 | 5.0 | 80.0 | Triangle |
| Sulfur Dioxide SO2 | so2400c | 0.500 | 400 | 16.0 | 5.0 | 80.0 | Triangle |
| Sulfur Dioxide SO2 | so2400d | 1.0 | 400 | 16.0 | 5.0 | 80.0 | Triangle |
| Sulfur Dioxide SO2 | so2500 | 0.125 | 500 | 16.0 | 5.0 | 80.0 | Boxcar |
| Sulfur Dioxide SO2 | so2500a | 0.125 | 500 | 16.0 | 5.0 | 80.0 | Triangle |
| Sulfur Dioxide SO2 | so2500b | 0.250 | 500 | 16.0 | 5.0 | 80.0 | Triangle |
| Sulfur Dioxide SO2 | so2500c | 0.500 | 500 | 16.0 | 5.0 | 80.0 | Triangle |
| Sulfur Dioxide SO2 | so2500d | 1.0 | 500 | 16.0 | 5.0 | 80.0 | Triangle |
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