FYRE - Noah Schneiderman: Comparison of Retrieval Algorithms for EM27/SUN Spectrometer Data
Congratulations to Noah Schneiderman for successfully completing the First Year Research Experience (FYRE) program. He presented his research at the poster ceremony entitled "Comparison of Retrieval Algorithms for EM27/SUN Spectrometer Data". Noah is an honors meteorology student at the University of Oklahoma. You can view a copy of his poster as a PDF through this link. I co-advised Noah with from Elizabeth Spicer, a meteorology graduate student who I work on remote sensing projects like GeoCarb-TRACER and others. This work supports an ongoing collaboration between Elizabeth and Annmarie Eldering at NIST. I hope to see this published as a paper soon.
Abstract
There exist two networks that use ground-based infrared spectrometers to determine the abundance of trace gases in the atmosphere at various locations worldwide, each of which developed a separate retrieval algorithm for converting raw spectra data into processed dry-air mole fractions. Although these two algorithms should produce identical results, discrepancies have been observed between them. In this project, I conducted a deep analysis of the structure of each retrieval algorithm by performing an extensive literature review and confirming my findings with the code itself. I created a detailed flowchart depicting the operation of each algorithm, noting both major differences and key similarities between them. I also used each algorithm to analyze sample data collected with the University of Oklahoma’s EM27/SUN instrument. In doing so, I observed a slight disparity between retrievals from the two algorithms, which worsened under nonideal conditions.
URL slug: fyre-poster-noah-schneiderman
Originally published: 2024-05-02 12:00:01
Content last regnerated: 2025-05-16 17:14:26
