Algorithm Theoretical Basis for Version 3 TEMPO O2‐O2 Cloud Product
Abstract This Algorithm Theoretical Basis Document (ATBD) describes the retrieval algorithm and sensitivities of the Version 3 cloud product derived from the spectra collected by the Tropospheric Emissions: Monitoring of POllution (TEMPO) instrument. The cloud product is primarily produced for suppo...
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| Format: | Article |
| Language: | English |
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American Geophysical Union (AGU)
2025-02-01
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| Series: | Earth and Space Science |
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| Online Access: | https://doi.org/10.1029/2024EA004165 |
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| author | Huiqun Wang Caroline R. Nowlan Gonzalo González Abad Heesung Chong Weizhen Hou John C. Houck Xiong Liu Kelly Chance Eun‐Su Yang Alexander Vasilkov Joanna Joiner Wenhan Qin Zachary Fasnacht K. Emma Knowland Chris Chan Miller Robert J. D. Spurr David E. Flittner James L. Carr Raid M. Suleiman John E. Davis Jean A. Fitzmaurice |
| author_facet | Huiqun Wang Caroline R. Nowlan Gonzalo González Abad Heesung Chong Weizhen Hou John C. Houck Xiong Liu Kelly Chance Eun‐Su Yang Alexander Vasilkov Joanna Joiner Wenhan Qin Zachary Fasnacht K. Emma Knowland Chris Chan Miller Robert J. D. Spurr David E. Flittner James L. Carr Raid M. Suleiman John E. Davis Jean A. Fitzmaurice |
| author_sort | Huiqun Wang |
| collection | DOAJ |
| description | Abstract This Algorithm Theoretical Basis Document (ATBD) describes the retrieval algorithm and sensitivities of the Version 3 cloud product derived from the spectra collected by the Tropospheric Emissions: Monitoring of POllution (TEMPO) instrument. The cloud product is primarily produced for supporting the retrievals of TEMPO trace gases that are important for understanding atmospheric chemistry and monitoring air pollution. The TEMPO cloud algorithm is adapted from NASA's Ozone Monitoring Instrument (OMI) oxygen collision complex (O2‐O2) cloud algorithm. The retrieval generates effective cloud fraction (ECF) from the normalized radiance at 466 nm and generates cloud optical centroid pressure (OCP) using the O2‐O2 column amount derived from the spectral absorption feature near 477 nm. The slant column of O2‐O2 is retrieved using Smithsonian Astrophysical Observatory's spectral fitting code with optimized retrieval parameters. ECF and OCP are used by TEMPO trace gas retrievals to calculate Air Mass Factors which convert slant columns to vertical columns. The sensitivities of the cloud retrieval to various input parameters are investigated. |
| format | Article |
| id | doaj-art-aa6ac2201b3440ccbcc0989cc9b892d7 |
| institution | OA Journals |
| issn | 2333-5084 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Earth and Space Science |
| spelling | doaj-art-aa6ac2201b3440ccbcc0989cc9b892d72025-08-20T02:30:59ZengAmerican Geophysical Union (AGU)Earth and Space Science2333-50842025-02-01122n/an/a10.1029/2024EA004165Algorithm Theoretical Basis for Version 3 TEMPO O2‐O2 Cloud ProductHuiqun Wang0Caroline R. Nowlan1Gonzalo González Abad2Heesung Chong3Weizhen Hou4John C. Houck5Xiong Liu6Kelly Chance7Eun‐Su Yang8Alexander Vasilkov9Joanna Joiner10Wenhan Qin11Zachary Fasnacht12K. Emma Knowland13Chris Chan Miller14Robert J. D. Spurr15David E. Flittner16James L. Carr17Raid M. Suleiman18John E. Davis19Jean A. Fitzmaurice20Smithsonian Astrophysical Observatory (SAO) Cambridge MA USASmithsonian Astrophysical Observatory (SAO) Cambridge MA USASmithsonian Astrophysical Observatory (SAO) Cambridge MA USASmithsonian Astrophysical Observatory (SAO) Cambridge MA USASmithsonian Astrophysical Observatory (SAO) Cambridge MA USASmithsonian Astrophysical Observatory (SAO) Cambridge MA USASmithsonian Astrophysical Observatory (SAO) Cambridge MA USASmithsonian Astrophysical Observatory (SAO) Cambridge MA USAScience Systems and Applications, Inc. (SSAI) Lanham MD USAScience Systems and Applications, Inc. (SSAI) Lanham MD USANASA Goddard Space Flight Center (GSFC) Greenbelt MD USAScience Systems and Applications, Inc. (SSAI) Lanham MD USAScience Systems and Applications, Inc. (SSAI) Lanham MD USANASA Goddard Space Flight Center (GSFC) Greenbelt MD USASmithsonian Astrophysical Observatory (SAO) Cambridge MA USART Solutions Inc. Cambridge MA USANASA Langley Research Center Hampton VA USACarr Astronautics Corporation Washington DC USASmithsonian Astrophysical Observatory (SAO) Cambridge MA USASmithsonian Astrophysical Observatory (SAO) Cambridge MA USASmithsonian Astrophysical Observatory (SAO) Cambridge MA USAAbstract This Algorithm Theoretical Basis Document (ATBD) describes the retrieval algorithm and sensitivities of the Version 3 cloud product derived from the spectra collected by the Tropospheric Emissions: Monitoring of POllution (TEMPO) instrument. The cloud product is primarily produced for supporting the retrievals of TEMPO trace gases that are important for understanding atmospheric chemistry and monitoring air pollution. The TEMPO cloud algorithm is adapted from NASA's Ozone Monitoring Instrument (OMI) oxygen collision complex (O2‐O2) cloud algorithm. The retrieval generates effective cloud fraction (ECF) from the normalized radiance at 466 nm and generates cloud optical centroid pressure (OCP) using the O2‐O2 column amount derived from the spectral absorption feature near 477 nm. The slant column of O2‐O2 is retrieved using Smithsonian Astrophysical Observatory's spectral fitting code with optimized retrieval parameters. ECF and OCP are used by TEMPO trace gas retrievals to calculate Air Mass Factors which convert slant columns to vertical columns. The sensitivities of the cloud retrieval to various input parameters are investigated.https://doi.org/10.1029/2024EA004165TEMPOcloudstrace gasretrieval |
| spellingShingle | Huiqun Wang Caroline R. Nowlan Gonzalo González Abad Heesung Chong Weizhen Hou John C. Houck Xiong Liu Kelly Chance Eun‐Su Yang Alexander Vasilkov Joanna Joiner Wenhan Qin Zachary Fasnacht K. Emma Knowland Chris Chan Miller Robert J. D. Spurr David E. Flittner James L. Carr Raid M. Suleiman John E. Davis Jean A. Fitzmaurice Algorithm Theoretical Basis for Version 3 TEMPO O2‐O2 Cloud Product Earth and Space Science TEMPO clouds trace gas retrieval |
| title | Algorithm Theoretical Basis for Version 3 TEMPO O2‐O2 Cloud Product |
| title_full | Algorithm Theoretical Basis for Version 3 TEMPO O2‐O2 Cloud Product |
| title_fullStr | Algorithm Theoretical Basis for Version 3 TEMPO O2‐O2 Cloud Product |
| title_full_unstemmed | Algorithm Theoretical Basis for Version 3 TEMPO O2‐O2 Cloud Product |
| title_short | Algorithm Theoretical Basis for Version 3 TEMPO O2‐O2 Cloud Product |
| title_sort | algorithm theoretical basis for version 3 tempo o2 o2 cloud product |
| topic | TEMPO clouds trace gas retrieval |
| url | https://doi.org/10.1029/2024EA004165 |
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