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Py4CAtS - PYthon for Computational ATmospheric Spectroscopy

Schreier, Franz and Gimeno Garcia, Sebastian and Xu, Jian (2016) Py4CAtS - PYthon for Computational ATmospheric Spectroscopy. ASA - HITRAN 2016, 24 - 26 Aug 2016, Reims, France.

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Abstract

Line-by-line models have become mandatory for many atmospheric spectroscopy applications. A large variety of models has been developed in the past, but in general these codes work as a kind of 'black box' where intermediate quantities such as cross sections are difficult to access. Py4CAtS --- PYthon scripts for Computational ATmospheric Spectroscopy is a Python re-implementation of our Fortran infrared radiative transfer code GARLIC (Generic Atmospheric Radiation Line-by-line Infrared Code), where compute-intensive code sections utilize the Numeric/Scientific Python modules for highly optimized array-processing. The individual steps of an infrared or microwave radiative transfer computation are implemented in separate scripts to extract lines of relevant molecules in the spectral range of interest, to compute line-by-line cross sections for given pressure(s) and temperature(s), to combine cross sections to absorption coefficients and optical depths, and to integrate along the line-of-sight to transmission and radiance/intensity. Py4CAtS can be used in two ways, from the Unix/Linux (or Windows/Mac) console/terminal or inside the (i)python interpreter. The basic design of the package, numerical and computational aspects relevant for optimization, and a sketch of the typical workflow are presented.

Item URL in elib:https://elib.dlr.de/105516/
Document Type:Conference or Workshop Item (Poster)
Title:Py4CAtS - PYthon for Computational ATmospheric Spectroscopy
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schreier, Franzfranz.schreier (at) dlr.dehttps://orcid.org/0000-0001-7196-6599
Gimeno Garcia, Sebastiansebastian.gimenogarcia (at) dlr.deUNSPECIFIED
Xu, JianUNSPECIFIEDUNSPECIFIED
Date:August 2016
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Molecular absorption, Infrared and microwave, Line-by-line modeling, Atmospheric radiative transfer
Event Title:ASA - HITRAN 2016
Event Location:Reims, France
Event Type:international Conference
Event Dates:24 - 26 Aug 2016
Organizer:University Reims
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Spektrometrische Verfahren und Konzepte der Fernerkundung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Schreier, Dr.rer.nat. Franz
Deposited On:03 Aug 2016 14:29
Last Modified:31 Jul 2019 20:02

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