Carbon dioxide retrieval from OCO-2 satellite observations using the RemoTeC algorithm and validation with TCCON measurements

Lianghai Wu, Otto Hasekamp, Haili Hu, Jochen Landgraf, Andre Butz, Joost aan de Brugh, Ilse Aben, Dave F. Pollard, David W. T. Griffith, Dietrich G. Feist, Dmitry Koshelev, Frank Hase, Geoffrey C. Toon, Hirofumi Ohyama, Isamu Morino, Justus Notholt, Kei Shiomi, Laura Iraci, Matthias Schneider, Martine de Maziere & 5 others Ralf Sussmann, Rigel Kivi, Thorsten Warneke, Tae-Young Goo, Yao Te

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

In this study we present the retrieval of the column-averaged dry air mole fraction of carbon dioxide (XCO2) from the Orbiting Carbon Observatory-2 (OCO-2) satellite observations using the RemoTeC algorithm, previously successfully applied to retrieval of greenhouse gas concentration from the Greenhouse Gases Observing Satellite (GOSAT). The XCO2 product has been validated with collocated ground-based measurements from the Total Carbon Column Observing Network (TCCON) for almost 2 years of OCO-2 data from September 2014 to July 2016. We found that fitting an additive radiometric offset in all three spectral bands of OCO-2 significantly improved the retrieval. Based on a small correlation of the XCO2 error over land with goodness of fit, we applied an a posteriori bias correction to our OCO-2 retrievals. In overpass averaged results, XCO2 retrievals have an SD of  ∼ 1.30ppm and a station-to-station variability of  ∼ 0.40ppm among collocated TCCON sites. The seasonal relative accuracy (SRA) has a value of 0.52ppm. The validation shows relatively larger difference with TCCON over high-latitude areas and some specific regions like Japan.
Original languageEnglish
Pages (from-to)3111-3130
JournalAtmospheric Measurement Techniques
Volume11
Issue number5
DOIs
Publication statusPublished - 30 May 2018

Cite this

Wu, Lianghai ; Hasekamp, Otto ; Hu, Haili ; Landgraf, Jochen ; Butz, Andre ; aan de Brugh, Joost ; Aben, Ilse ; Pollard, Dave F. ; Griffith, David W. T. ; Feist, Dietrich G. ; Koshelev, Dmitry ; Hase, Frank ; Toon, Geoffrey C. ; Ohyama, Hirofumi ; Morino, Isamu ; Notholt, Justus ; Shiomi, Kei ; Iraci, Laura ; Schneider, Matthias ; de Maziere, Martine ; Sussmann, Ralf ; Kivi, Rigel ; Warneke, Thorsten ; Goo, Tae-Young ; Te, Yao. / Carbon dioxide retrieval from OCO-2 satellite observations using the RemoTeC algorithm and validation with TCCON measurements. In: Atmospheric Measurement Techniques. 2018 ; Vol. 11, No. 5. pp. 3111-3130.
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title = "Carbon dioxide retrieval from OCO-2 satellite observations using the RemoTeC algorithm and validation with TCCON measurements",
abstract = "In this study we present the retrieval of the column-averaged dry air mole fraction of carbon dioxide (XCO2) from the Orbiting Carbon Observatory-2 (OCO-2) satellite observations using the RemoTeC algorithm, previously successfully applied to retrieval of greenhouse gas concentration from the Greenhouse Gases Observing Satellite (GOSAT). The XCO2 product has been validated with collocated ground-based measurements from the Total Carbon Column Observing Network (TCCON) for almost 2 years of OCO-2 data from September 2014 to July 2016. We found that fitting an additive radiometric offset in all three spectral bands of OCO-2 significantly improved the retrieval. Based on a small correlation of the XCO2 error over land with goodness of fit, we applied an a posteriori bias correction to our OCO-2 retrievals. In overpass averaged results, XCO2 retrievals have an SD of  ∼ 1.30ppm and a station-to-station variability of  ∼ 0.40ppm among collocated TCCON sites. The seasonal relative accuracy (SRA) has a value of 0.52ppm. The validation shows relatively larger difference with TCCON over high-latitude areas and some specific regions like Japan.",
author = "Lianghai Wu and Otto Hasekamp and Haili Hu and Jochen Landgraf and Andre Butz and {aan de Brugh}, Joost and Ilse Aben and Pollard, {Dave F.} and Griffith, {David W. T.} and Feist, {Dietrich G.} and Dmitry Koshelev and Frank Hase and Toon, {Geoffrey C.} and Hirofumi Ohyama and Isamu Morino and Justus Notholt and Kei Shiomi and Laura Iraci and Matthias Schneider and {de Maziere}, Martine and Ralf Sussmann and Rigel Kivi and Thorsten Warneke and Tae-Young Goo and Yao Te",
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doi = "10.5194/amt-11-3111-2018",
language = "English",
volume = "11",
pages = "3111--3130",
journal = "Atmospheric Measurement Techniques",
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Wu, L, Hasekamp, O, Hu, H, Landgraf, J, Butz, A, aan de Brugh, J, Aben, I, Pollard, DF, Griffith, DWT, Feist, DG, Koshelev, D, Hase, F, Toon, GC, Ohyama, H, Morino, I, Notholt, J, Shiomi, K, Iraci, L, Schneider, M, de Maziere, M, Sussmann, R, Kivi, R, Warneke, T, Goo, T-Y & Te, Y 2018, 'Carbon dioxide retrieval from OCO-2 satellite observations using the RemoTeC algorithm and validation with TCCON measurements' Atmospheric Measurement Techniques, vol. 11, no. 5, pp. 3111-3130. https://doi.org/10.5194/amt-11-3111-2018

Carbon dioxide retrieval from OCO-2 satellite observations using the RemoTeC algorithm and validation with TCCON measurements. / Wu, Lianghai; Hasekamp, Otto; Hu, Haili; Landgraf, Jochen; Butz, Andre; aan de Brugh, Joost; Aben, Ilse; Pollard, Dave F.; Griffith, David W. T.; Feist, Dietrich G.; Koshelev, Dmitry; Hase, Frank; Toon, Geoffrey C.; Ohyama, Hirofumi; Morino, Isamu; Notholt, Justus; Shiomi, Kei; Iraci, Laura; Schneider, Matthias; de Maziere, Martine; Sussmann, Ralf; Kivi, Rigel; Warneke, Thorsten; Goo, Tae-Young; Te, Yao.

In: Atmospheric Measurement Techniques, Vol. 11, No. 5, 30.05.2018, p. 3111-3130.

Research output: Contribution to JournalArticleAcademicpeer-review

TY - JOUR

T1 - Carbon dioxide retrieval from OCO-2 satellite observations using the RemoTeC algorithm and validation with TCCON measurements

AU - Wu, Lianghai

AU - Hasekamp, Otto

AU - Hu, Haili

AU - Landgraf, Jochen

AU - Butz, Andre

AU - aan de Brugh, Joost

AU - Aben, Ilse

AU - Pollard, Dave F.

AU - Griffith, David W. T.

AU - Feist, Dietrich G.

AU - Koshelev, Dmitry

AU - Hase, Frank

AU - Toon, Geoffrey C.

AU - Ohyama, Hirofumi

AU - Morino, Isamu

AU - Notholt, Justus

AU - Shiomi, Kei

AU - Iraci, Laura

AU - Schneider, Matthias

AU - de Maziere, Martine

AU - Sussmann, Ralf

AU - Kivi, Rigel

AU - Warneke, Thorsten

AU - Goo, Tae-Young

AU - Te, Yao

PY - 2018/5/30

Y1 - 2018/5/30

N2 - In this study we present the retrieval of the column-averaged dry air mole fraction of carbon dioxide (XCO2) from the Orbiting Carbon Observatory-2 (OCO-2) satellite observations using the RemoTeC algorithm, previously successfully applied to retrieval of greenhouse gas concentration from the Greenhouse Gases Observing Satellite (GOSAT). The XCO2 product has been validated with collocated ground-based measurements from the Total Carbon Column Observing Network (TCCON) for almost 2 years of OCO-2 data from September 2014 to July 2016. We found that fitting an additive radiometric offset in all three spectral bands of OCO-2 significantly improved the retrieval. Based on a small correlation of the XCO2 error over land with goodness of fit, we applied an a posteriori bias correction to our OCO-2 retrievals. In overpass averaged results, XCO2 retrievals have an SD of  ∼ 1.30ppm and a station-to-station variability of  ∼ 0.40ppm among collocated TCCON sites. The seasonal relative accuracy (SRA) has a value of 0.52ppm. The validation shows relatively larger difference with TCCON over high-latitude areas and some specific regions like Japan.

AB - In this study we present the retrieval of the column-averaged dry air mole fraction of carbon dioxide (XCO2) from the Orbiting Carbon Observatory-2 (OCO-2) satellite observations using the RemoTeC algorithm, previously successfully applied to retrieval of greenhouse gas concentration from the Greenhouse Gases Observing Satellite (GOSAT). The XCO2 product has been validated with collocated ground-based measurements from the Total Carbon Column Observing Network (TCCON) for almost 2 years of OCO-2 data from September 2014 to July 2016. We found that fitting an additive radiometric offset in all three spectral bands of OCO-2 significantly improved the retrieval. Based on a small correlation of the XCO2 error over land with goodness of fit, we applied an a posteriori bias correction to our OCO-2 retrievals. In overpass averaged results, XCO2 retrievals have an SD of  ∼ 1.30ppm and a station-to-station variability of  ∼ 0.40ppm among collocated TCCON sites. The seasonal relative accuracy (SRA) has a value of 0.52ppm. The validation shows relatively larger difference with TCCON over high-latitude areas and some specific regions like Japan.

U2 - 10.5194/amt-11-3111-2018

DO - 10.5194/amt-11-3111-2018

M3 - Article

VL - 11

SP - 3111

EP - 3130

JO - Atmospheric Measurement Techniques

JF - Atmospheric Measurement Techniques

SN - 1867-1381

IS - 5

ER -