First observations of CO2 absorption spectra recorded in 2005 using an airship-borne FTS (GOSAT TANSO-FTS bbm) in the SWIR spectral region

Hiroyuki Oguma, Isamu Morino, Hiroshi Suto, Yukio Yoshida, Nawo Eguchi, Akihiko Kuze, Tatsuya Yokota

Research output: Contribution to journalArticle

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Abstract

This article describes the results of a field experiment performed to confirm the feasibility of measuring the solar spectra absorbed by carbon dioxide (CO2) using a short wavelength infrared Fourier transform spectrometer (SWIR-FTS) installed onboard an airship. These airship-borne observations, conducted on 7 April 2005, represent the first aircraft-borne spectroscopic experiment on greenhouse gases (GHGs) in Japan and were performed as part of the Greenhouse Gases Observing Satellite (GOSAT) project. To develop and demonstrate an effective retrieval algorithm to derive CO2 column amounts from spectroscopic observations, ground- surface scattered solar absorption spectra were observed by SWIR-FTS installed onboard the airship. This instrument is a breadboard model (BBM) of the Thermal and Near-infrared Sensor for Carbon Observation (TANSO) of GOSAT, which was successfully launched on 23 January 2009. The spectra of CO2 observed using the BBM were compared with the simulated spectra calculated by a radiative transfer code based on airship-borne in situ measurement data, which were obtained at the time of FTS measurements. The two sets of spectra are in agreement within 5%, and we identified solutions to several technical problems related to the FTS instrument, thereby improving the signal-to-noise ratio (SNR).

Original languageEnglish
Pages (from-to)9033-9049
Number of pages17
JournalInternational Journal of Remote Sensing
Volume32
Issue number24
DOIs
Publication statusPublished - Jan 1 2011

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absorption spectrum
near infrared
sensor
carbon
gas
Fourier transform
spectrometer
GOSAT
wavelength
in situ measurement
signal-to-noise ratio
radiative transfer
aircraft
greenhouse gas
carbon dioxide
experiment

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)

Cite this

First observations of CO2 absorption spectra recorded in 2005 using an airship-borne FTS (GOSAT TANSO-FTS bbm) in the SWIR spectral region. / Oguma, Hiroyuki; Morino, Isamu; Suto, Hiroshi; Yoshida, Yukio; Eguchi, Nawo; Kuze, Akihiko; Yokota, Tatsuya.

In: International Journal of Remote Sensing, Vol. 32, No. 24, 01.01.2011, p. 9033-9049.

Research output: Contribution to journalArticle

Oguma, Hiroyuki ; Morino, Isamu ; Suto, Hiroshi ; Yoshida, Yukio ; Eguchi, Nawo ; Kuze, Akihiko ; Yokota, Tatsuya. / First observations of CO2 absorption spectra recorded in 2005 using an airship-borne FTS (GOSAT TANSO-FTS bbm) in the SWIR spectral region. In: International Journal of Remote Sensing. 2011 ; Vol. 32, No. 24. pp. 9033-9049.
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