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Please advise on some questions about the parameter units entered in Record 3.5 3.6 #65

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StarsTravel opened this issue Jun 21, 2024 · 1 comment
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@StarsTravel
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StarsTravel commented Jun 21, 2024

Now, I want to enter custom atmospheric profile data in LBLRTM,The figure below is the input atmospheric profile data, the unit of altitude is km, the unit of barometric pressure is mbar, the unit of temperature is K, the unit of density is cm-3 (I will not enter density in LBLRTM), and the unit of molecule is PPMV:
image
As defined in record 3.5, 3.6 and TABLE I
image
image
Pressure defines the unit of pressure as mb by setting JCHARP='A'.
TEMPERATURE by setting JCHART='A' to position the TEMPERATURE unit as K,
the molecule locates the molecule density unit as PPMV by setting JCHART='A',
The image below is the generated TAPE5 file
image

Please tell me if the air data for each layer of this is the same as the one I want to input into the air parameter file USSTD?
Thank you!!!!

TAPE5_LBLRTM.zip
USSTD.zip

@mjiacono
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Your TAPE5 files sets a user-defined atmosphere that uses the mid-latitude summer values for H2O, CO2, and O3 (JCHAR=“2”) and specifies the US standard values for N2O in PPMV (JCHAR=“A”). In this input configuration, you do not need to input the layer air density. LBLRTM automatically calculates the total layer amount based on the provided temperature and pressure, then calculates the amount of each gas based on the mixing ratios of the input molecules. The difference between the total layer amount and the sum of the molecular layer amounts is the broadening gas amount, for which there are no spectroscopic properties.

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