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The publisher does not list a schedule. The last update was on 11/12/2024.

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Checked Oct 30, 2026

Federal dataEnvironment

Python Script for calculating absorption cross sections as a function of wavelength and altitude

Name: Python Script for calculating absorption cross sections as a function of wavelength and altitude
Creator: National Institute of Standards and Technology
Published: 2025-07-24T00:00:00.000Z
License: https://www.nist.gov/open/license

Published by National Institute of Standards and Technology · Updated 11/12/2024

Official source

Last updated: 11/12/2024; First published 07/24/2025
Update frequency: Not listed
Formats: Web only
Coverage: Nationwide; Federal data

About this dataset

This Python notebook enables users to calculate air-broadened absorption cross sections for HITRAN database molecules at user-defined pressures and temperatures. Users can also specify altitude simulation points, where the pressure and temperature are calculated based on the US Standard Atmosphere, 1976. The spectroscopic reference data used to generate the tables was provided by HITRAN 2020, while the HITRAN Application Programming Interface was used to interface with the HITRAN database and simulate the absorption cross sections. In addition to the absorption cross sections, the Python script enables the calculation of the self- and foreign-water vapor continuum at the specified atmospheric state points using the MT_CKD Water Vapor Continuum Model v4.2.

Files and access

Links open the official government source

Absorption Cross Section Calculator for HITRAN Molecules at Environmental Conditionsdata.nist.gov

Links open outside websites we do not control.

Frequently asked questions

Who publishes Python Script for calculating absorption cross sections as a function of wavelength and altitude?: National Institute of Standards and Technology, part of Department of Commerce, publishes this dataset on Data.gov.
How often is it updated?: The publisher does not list a schedule. The last update was on 11/12/2024.
How do I download it?: Use the official source link above to view or request the data.

Similar data from other publishers

Python Script for calculating absorption cross sections as a function of wavelength and altitudeNational Institute of Standards and TechnologyThis Python notebook enables users to calculate air-broadened absorption cross sections for HITRAN database molecules at user-defined pressures and temperatures. Users can also specify altitude simulation points, where the pressure and temperature are calculat
Updated 11/12/2024

Where this catalog comes from

Data.gov CatalogU.S. General Services Administration
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Catalog checked 10/24/2026

We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.

Source: Data.gov · Last updated 10/24/2026 · Listing only; the data stays with the publisher