Multispectral information from TANSO-FTS instrument – Part 1: Application to greenhouse gases (CO<sub>2</sub> and CH<sub>4</sub>) in clear sky conditions
The Greenhouse gases Observing SATellite (GOSAT) mission, and in particular the Thermal And Near infrared Sensor for carbon Observations–Fourier Transform Spectrometer (TANSO-FTS) instrument, has the advantage of being able to measure simultaneously the same field of view in different spectral range...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2013-11-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | http://www.atmos-meas-tech.net/6/3301/2013/amt-6-3301-2013.pdf |
| _version_ | 1818426713404604416 |
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| author | H. Herbin L. C. Labonnote P. Dubuisson |
| author_facet | H. Herbin L. C. Labonnote P. Dubuisson |
| author_sort | H. Herbin |
| collection | DOAJ |
| description | The Greenhouse gases Observing SATellite (GOSAT) mission, and in particular
the Thermal And Near infrared Sensor for carbon Observations–Fourier Transform Spectrometer (TANSO-FTS) instrument, has the advantage of being able to measure simultaneously the same
field of view in different spectral ranges with a high spectral resolution.
These features allow studying the benefits of using multispectral
measurements to improve the CO<sub>2</sub> and CH<sub>4</sub> retrievals.
<br><br>
In order to quantify the impact of the spectral synergy on the retrieval
accuracy, we performed an information content (IC) analysis from simulated
spectra corresponding to the three infrared bands of TANSO-FTS. The
advantages and limitations of using thermal and shortwave infrared
simultaneously are discussed according to surface type and state vector
composition. The IC is then used to determine the most informative spectral
channels for the simultaneous retrieval of CO<sub>2</sub> and CH<sub>4</sub>. The
results show that a channel selection spanning the three infrared bands can
improve the computation time and retrieval accuracy. Therefore, a selection
of less than 700 channels from the thermal infrared (TIR) and shortwave infrared (SWIR) bands allows retrieving
CO<sub>2</sub> and CH<sub>4</sub> simultaneously with a similar accuracy to using all
channels together to retrieve each gas separately. |
| first_indexed | 2024-12-14T14:34:12Z |
| format | Article |
| id | doaj.art-7bc6257978254b67a52246b146789e75 |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-12-14T14:34:12Z |
| publishDate | 2013-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-7bc6257978254b67a52246b146789e752022-12-21T22:57:43ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482013-11-016113301331110.5194/amt-6-3301-2013Multispectral information from TANSO-FTS instrument – Part 1: Application to greenhouse gases (CO<sub>2</sub> and CH<sub>4</sub>) in clear sky conditionsH. Herbin0L. C. Labonnote1P. Dubuisson2Laboratoire d'Optique Atmosphérique (LOA), UMR8518, Université de Lille 1, 59655 Villeneuve d'Ascq cedex, FranceLaboratoire d'Optique Atmosphérique (LOA), UMR8518, Université de Lille 1, 59655 Villeneuve d'Ascq cedex, FranceLaboratoire d'Optique Atmosphérique (LOA), UMR8518, Université de Lille 1, 59655 Villeneuve d'Ascq cedex, FranceThe Greenhouse gases Observing SATellite (GOSAT) mission, and in particular the Thermal And Near infrared Sensor for carbon Observations–Fourier Transform Spectrometer (TANSO-FTS) instrument, has the advantage of being able to measure simultaneously the same field of view in different spectral ranges with a high spectral resolution. These features allow studying the benefits of using multispectral measurements to improve the CO<sub>2</sub> and CH<sub>4</sub> retrievals. <br><br> In order to quantify the impact of the spectral synergy on the retrieval accuracy, we performed an information content (IC) analysis from simulated spectra corresponding to the three infrared bands of TANSO-FTS. The advantages and limitations of using thermal and shortwave infrared simultaneously are discussed according to surface type and state vector composition. The IC is then used to determine the most informative spectral channels for the simultaneous retrieval of CO<sub>2</sub> and CH<sub>4</sub>. The results show that a channel selection spanning the three infrared bands can improve the computation time and retrieval accuracy. Therefore, a selection of less than 700 channels from the thermal infrared (TIR) and shortwave infrared (SWIR) bands allows retrieving CO<sub>2</sub> and CH<sub>4</sub> simultaneously with a similar accuracy to using all channels together to retrieve each gas separately.http://www.atmos-meas-tech.net/6/3301/2013/amt-6-3301-2013.pdf |
| spellingShingle | H. Herbin L. C. Labonnote P. Dubuisson Multispectral information from TANSO-FTS instrument – Part 1: Application to greenhouse gases (CO<sub>2</sub> and CH<sub>4</sub>) in clear sky conditions Atmospheric Measurement Techniques |
| title | Multispectral information from TANSO-FTS instrument – Part 1: Application to greenhouse gases (CO<sub>2</sub> and CH<sub>4</sub>) in clear sky conditions |
| title_full | Multispectral information from TANSO-FTS instrument – Part 1: Application to greenhouse gases (CO<sub>2</sub> and CH<sub>4</sub>) in clear sky conditions |
| title_fullStr | Multispectral information from TANSO-FTS instrument – Part 1: Application to greenhouse gases (CO<sub>2</sub> and CH<sub>4</sub>) in clear sky conditions |
| title_full_unstemmed | Multispectral information from TANSO-FTS instrument – Part 1: Application to greenhouse gases (CO<sub>2</sub> and CH<sub>4</sub>) in clear sky conditions |
| title_short | Multispectral information from TANSO-FTS instrument – Part 1: Application to greenhouse gases (CO<sub>2</sub> and CH<sub>4</sub>) in clear sky conditions |
| title_sort | multispectral information from tanso fts instrument part 1 application to greenhouse gases co sub 2 sub and ch sub 4 sub in clear sky conditions |
| url | http://www.atmos-meas-tech.net/6/3301/2013/amt-6-3301-2013.pdf |
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