Preflight Spectral Calibration of the Orbiting Carbon Observatory 2
This paper describes the preflight spectral calibration methods and results for the Orbiting Carbon Observatory 2 (OCO-2), following the approach developed for the first OCO. The instrument line shape (ILS) function and dispersion parameters were determined through laser-based spectroscopic measurem...
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| Veröffentlicht in: | IEEE transactions on geoscience and remote sensing 2017-05, Vol.55 (5), p.2499-2508 |
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| creator | Lee, Richard A. M. O'Dell, Christopher W. Wunch, Debra Roehl, Coleen M. Osterman, Gregory B. Blavier, Jean-Francois Rosenberg, Robert Chapsky, Lars Frankenberg, Christian Hunyadi-Lay, Sarah L. Fisher, Brendan M. Rider, David M. Crisp, David Pollock, Randy |
| description | This paper describes the preflight spectral calibration methods and results for the Orbiting Carbon Observatory 2 (OCO-2), following the approach developed for the first OCO. The instrument line shape (ILS) function and dispersion parameters were determined through laser-based spectroscopic measurements, and then further optimized by comparing solar spectra recorded simultaneously on the ground by the OCO-2 flight instrument and a collocated high-resolution Fourier transform spectrometer (FTS). The resulting ILS profiles and dispersion parameters, when applied to the FTS solar data, showed agreement between the spectra recorded by the spectrometers and FTS to approximately 0.2% RMS, satisfying the preflight spectral calibration accuracy requirement of |
| doi_str_mv | 10.1109/TGRS.2016.2645614 |
| format | Article |
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M. ; O'Dell, Christopher W. ; Wunch, Debra ; Roehl, Coleen M. ; Osterman, Gregory B. ; Blavier, Jean-Francois ; Rosenberg, Robert ; Chapsky, Lars ; Frankenberg, Christian ; Hunyadi-Lay, Sarah L. ; Fisher, Brendan M. ; Rider, David M. ; Crisp, David ; Pollock, Randy</creator><creatorcontrib>Lee, Richard A. M. ; O'Dell, Christopher W. ; Wunch, Debra ; Roehl, Coleen M. ; Osterman, Gregory B. ; Blavier, Jean-Francois ; Rosenberg, Robert ; Chapsky, Lars ; Frankenberg, Christian ; Hunyadi-Lay, Sarah L. ; Fisher, Brendan M. ; Rider, David M. ; Crisp, David ; Pollock, Randy</creatorcontrib><description>This paper describes the preflight spectral calibration methods and results for the Orbiting Carbon Observatory 2 (OCO-2), following the approach developed for the first OCO. The instrument line shape (ILS) function and dispersion parameters were determined through laser-based spectroscopic measurements, and then further optimized by comparing solar spectra recorded simultaneously on the ground by the OCO-2 flight instrument and a collocated high-resolution Fourier transform spectrometer (FTS). The resulting ILS profiles and dispersion parameters, when applied to the FTS solar data, showed agreement between the spectra recorded by the spectrometers and FTS to approximately 0.2% RMS, satisfying the preflight spectral calibration accuracy requirement of <;0.25% RMS. Specific changes to the OCO-2 instrument and calibration process, compared to the original OCO, include stray-light protection; improved laser setup; increased spectral sampling; enhanced data screening, and incremental improvements in the ILS, dispersion, and FTS optimization analyses.</description><identifier>ISSN: 0196-2892</identifier><identifier>EISSN: 1558-0644</identifier><identifier>DOI: 10.1109/TGRS.2016.2645614</identifier><identifier>CODEN: IGRSD2</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Atmospheric measurements ; Calibration ; Carbon ; Carbon dioxide (CO₂) ; Detectors ; Dispersion ; dispersion parameters ; Fourier transform spectrometers ; Fourier transforms ; instrument line shape (ILS) ; Instruments ; Laser applications ; Lasers ; Line shape ; Measurement by laser beam ; Observatories ; Optimization ; Orbiting Carbon Observatory 2 (OCO-2) ; Parameters ; Solar spectra ; Spectra ; spectral calibration ; Spectrometers ; Wavelength measurement</subject><ispartof>IEEE transactions on geoscience and remote sensing, 2017-05, Vol.55 (5), p.2499-2508</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c293t-a5c311d2e508ebcd281309193be8a0bcd25408a458d10bdc0379f1a99f998e7d3</citedby><cites>FETCH-LOGICAL-c293t-a5c311d2e508ebcd281309193be8a0bcd25408a458d10bdc0379f1a99f998e7d3</cites><orcidid>0000-0001-6509-697X ; 0000-0002-0459-4630</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/7835630$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/7835630$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Lee, Richard A. M.</creatorcontrib><creatorcontrib>O'Dell, Christopher W.</creatorcontrib><creatorcontrib>Wunch, Debra</creatorcontrib><creatorcontrib>Roehl, Coleen M.</creatorcontrib><creatorcontrib>Osterman, Gregory B.</creatorcontrib><creatorcontrib>Blavier, Jean-Francois</creatorcontrib><creatorcontrib>Rosenberg, Robert</creatorcontrib><creatorcontrib>Chapsky, Lars</creatorcontrib><creatorcontrib>Frankenberg, Christian</creatorcontrib><creatorcontrib>Hunyadi-Lay, Sarah L.</creatorcontrib><creatorcontrib>Fisher, Brendan M.</creatorcontrib><creatorcontrib>Rider, David M.</creatorcontrib><creatorcontrib>Crisp, David</creatorcontrib><creatorcontrib>Pollock, Randy</creatorcontrib><title>Preflight Spectral Calibration of the Orbiting Carbon Observatory 2</title><title>IEEE transactions on geoscience and remote sensing</title><addtitle>TGRS</addtitle><description>This paper describes the preflight spectral calibration methods and results for the Orbiting Carbon Observatory 2 (OCO-2), following the approach developed for the first OCO. The instrument line shape (ILS) function and dispersion parameters were determined through laser-based spectroscopic measurements, and then further optimized by comparing solar spectra recorded simultaneously on the ground by the OCO-2 flight instrument and a collocated high-resolution Fourier transform spectrometer (FTS). The resulting ILS profiles and dispersion parameters, when applied to the FTS solar data, showed agreement between the spectra recorded by the spectrometers and FTS to approximately 0.2% RMS, satisfying the preflight spectral calibration accuracy requirement of <;0.25% RMS. Specific changes to the OCO-2 instrument and calibration process, compared to the original OCO, include stray-light protection; improved laser setup; increased spectral sampling; enhanced data screening, and incremental improvements in the ILS, dispersion, and FTS optimization analyses.</description><subject>Atmospheric measurements</subject><subject>Calibration</subject><subject>Carbon</subject><subject>Carbon dioxide (CO₂)</subject><subject>Detectors</subject><subject>Dispersion</subject><subject>dispersion parameters</subject><subject>Fourier transform spectrometers</subject><subject>Fourier transforms</subject><subject>instrument line shape (ILS)</subject><subject>Instruments</subject><subject>Laser applications</subject><subject>Lasers</subject><subject>Line shape</subject><subject>Measurement by laser beam</subject><subject>Observatories</subject><subject>Optimization</subject><subject>Orbiting Carbon Observatory 2 (OCO-2)</subject><subject>Parameters</subject><subject>Solar spectra</subject><subject>Spectra</subject><subject>spectral calibration</subject><subject>Spectrometers</subject><subject>Wavelength measurement</subject><issn>0196-2892</issn><issn>1558-0644</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kE9Lw0AQxRdRsFY_gHgJeE6c2T_J7lGCVqFQsfW87CabNiU2dXcr9Nub0OJp4M17M7wfIfcIGSKop9Xsc5lRwDyjORc58gsyQSFkCjnnl2QCqPKUSkWvyU0IWwDkAosJKT-8a7p2vYnJcu-q6E2XlKZrrTex7XdJ3yRx45KFt21sd-th5-0gL2xw_tfE3h8TekuuGtMFd3eeU_L1-rIq39L5YvZePs_TiioWUyMqhlhTJ0A6W9VUIgOFilknDYyC4CANF7JGsHUFrFANGqUapaQrajYlj6e7e9__HFyIetsf_G54qVEWquBMSTm48OSqfB_C0E7vfftt_FEj6JGVHlnpkZU-sxoyD6dM65z79xeSiZwB-wO7FWR9</recordid><startdate>201705</startdate><enddate>201705</enddate><creator>Lee, Richard A. 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M. ; O'Dell, Christopher W. ; Wunch, Debra ; Roehl, Coleen M. ; Osterman, Gregory B. ; Blavier, Jean-Francois ; Rosenberg, Robert ; Chapsky, Lars ; Frankenberg, Christian ; Hunyadi-Lay, Sarah L. ; Fisher, Brendan M. ; Rider, David M. ; Crisp, David ; Pollock, Randy</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c293t-a5c311d2e508ebcd281309193be8a0bcd25408a458d10bdc0379f1a99f998e7d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Atmospheric measurements</topic><topic>Calibration</topic><topic>Carbon</topic><topic>Carbon dioxide (CO₂)</topic><topic>Detectors</topic><topic>Dispersion</topic><topic>dispersion parameters</topic><topic>Fourier transform spectrometers</topic><topic>Fourier transforms</topic><topic>instrument line shape (ILS)</topic><topic>Instruments</topic><topic>Laser applications</topic><topic>Lasers</topic><topic>Line shape</topic><topic>Measurement by laser beam</topic><topic>Observatories</topic><topic>Optimization</topic><topic>Orbiting Carbon Observatory 2 (OCO-2)</topic><topic>Parameters</topic><topic>Solar spectra</topic><topic>Spectra</topic><topic>spectral calibration</topic><topic>Spectrometers</topic><topic>Wavelength measurement</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Richard A. M.</creatorcontrib><creatorcontrib>O'Dell, Christopher W.</creatorcontrib><creatorcontrib>Wunch, Debra</creatorcontrib><creatorcontrib>Roehl, Coleen M.</creatorcontrib><creatorcontrib>Osterman, Gregory B.</creatorcontrib><creatorcontrib>Blavier, Jean-Francois</creatorcontrib><creatorcontrib>Rosenberg, Robert</creatorcontrib><creatorcontrib>Chapsky, Lars</creatorcontrib><creatorcontrib>Frankenberg, Christian</creatorcontrib><creatorcontrib>Hunyadi-Lay, Sarah L.</creatorcontrib><creatorcontrib>Fisher, Brendan M.</creatorcontrib><creatorcontrib>Rider, David M.</creatorcontrib><creatorcontrib>Crisp, David</creatorcontrib><creatorcontrib>Pollock, Randy</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on geoscience and remote sensing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Lee, Richard A. M.</au><au>O'Dell, Christopher W.</au><au>Wunch, Debra</au><au>Roehl, Coleen M.</au><au>Osterman, Gregory B.</au><au>Blavier, Jean-Francois</au><au>Rosenberg, Robert</au><au>Chapsky, Lars</au><au>Frankenberg, Christian</au><au>Hunyadi-Lay, Sarah L.</au><au>Fisher, Brendan M.</au><au>Rider, David M.</au><au>Crisp, David</au><au>Pollock, Randy</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Preflight Spectral Calibration of the Orbiting Carbon Observatory 2</atitle><jtitle>IEEE transactions on geoscience and remote sensing</jtitle><stitle>TGRS</stitle><date>2017-05</date><risdate>2017</risdate><volume>55</volume><issue>5</issue><spage>2499</spage><epage>2508</epage><pages>2499-2508</pages><issn>0196-2892</issn><eissn>1558-0644</eissn><coden>IGRSD2</coden><abstract>This paper describes the preflight spectral calibration methods and results for the Orbiting Carbon Observatory 2 (OCO-2), following the approach developed for the first OCO. The instrument line shape (ILS) function and dispersion parameters were determined through laser-based spectroscopic measurements, and then further optimized by comparing solar spectra recorded simultaneously on the ground by the OCO-2 flight instrument and a collocated high-resolution Fourier transform spectrometer (FTS). The resulting ILS profiles and dispersion parameters, when applied to the FTS solar data, showed agreement between the spectra recorded by the spectrometers and FTS to approximately 0.2% RMS, satisfying the preflight spectral calibration accuracy requirement of <;0.25% RMS. Specific changes to the OCO-2 instrument and calibration process, compared to the original OCO, include stray-light protection; improved laser setup; increased spectral sampling; enhanced data screening, and incremental improvements in the ILS, dispersion, and FTS optimization analyses.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TGRS.2016.2645614</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0001-6509-697X</orcidid><orcidid>https://orcid.org/0000-0002-0459-4630</orcidid></addata></record> |
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| ispartof | IEEE transactions on geoscience and remote sensing, 2017-05, Vol.55 (5), p.2499-2508 |
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| subjects | Atmospheric measurements Calibration Carbon Carbon dioxide (CO₂) Detectors Dispersion dispersion parameters Fourier transform spectrometers Fourier transforms instrument line shape (ILS) Instruments Laser applications Lasers Line shape Measurement by laser beam Observatories Optimization Orbiting Carbon Observatory 2 (OCO-2) Parameters Solar spectra Spectra spectral calibration Spectrometers Wavelength measurement |
| title | Preflight Spectral Calibration of the Orbiting Carbon Observatory 2 |
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