GOSAT-2搭載TANSO-FTS-2の熱赤外バンドによる温室効果ガス観測
書誌事項
- タイトル別名
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- Greenhouse Gas Observations by the Thermal Infrared Bands of TANSO-FTS-2 on Board GOSAT-2
- GOSAT-2 トウサイ TANSO-FTS-2 ノ ネツ セキガイ バンド ニ ヨル オンシツ コウカ ガス カンソク
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<p>Greenhouse Gases Observing Satellite (GOSAT)-2, which is the successor of GOSAT, was launched on 29th October, 2018. Thermal And Near infrared Sensor for carbon Observation (TANSO)- Fourier Transform Spectrometer (FTS)-2 on board the GOSAT-2 has two thermal infrared (TIR) bands (Bands 4 and 5) with which to observe the vertical profiles of atmospheric temperature and greenhouse gases such as carbon dioxide (CO2) and methane (CH4). We adopted a non-linear maximum a posteriori (MAP) method with linear mapping to retrieve the temperature and gas concentrations. The current TANSO-FTS-2 retrieval system developed before the GOSAT-2 launch utilizes the CO2 absorption bands at around 9, 10, and 15μm (690-750cm-1, 790-795cm-1, 930-990cm-1, and 1040-1090cm-1) to retrieve CO2, water vapor, ozone, and temperature, and utilizes the CH4 and N2O absorption bands at around 7 and 8μm (1140-1370cm-1) to retrieve CH4, N2O, water vapor, ozone, and temperature. The signal-to-noise ratio (SNR) values of the TIR bands of the TANSO-FTS-2 are expected to be significantly larger than those of the TANSO-FTS, which gives the TANSO-FTS-2 higher sensitivity to gas concentrations. According to a preliminary retrieval simulation, the degree of freedom (DF) of the CO2 observations of the TIR bands of the TANSO-FTS-2 is 2.44 in low latitudes, while the DF value of the TANSO-FTS TIR CO2 observations is 2.06 under the same atmospheric conditions. The DF values of the TANSO-FTS-2 TIR CH4 and N2O, observations are 3.07 and 1.84, respectively, which are much higher than those of the TANSO-FTS TIR observations (0.50 and 0.14).</p>
収録刊行物
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- 日本リモートセンシング学会誌
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日本リモートセンシング学会誌 39 (1), 29-36, 2019-02-28
一般社団法人 日本リモートセンシング学会
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詳細情報 詳細情報について
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- CRID
- 1390001288155122560
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- NII論文ID
- 130007686758
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- NII書誌ID
- AN10035665
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- ISSN
- 18831184
- 02897911
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- NDL書誌ID
- 029635996
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可