Improved calibration procedures for the EM27/SUN spectrometers of the COllaborative Carbon Column Observing Network (COCCON)

被引：23

作者：

Alberti, Carlos ^{[1
]}

Hase, Frank ^{[1
]}

Frey, Matthias ^{[2
]}

Dubravica, Darko ^{[1
]}

Blumenstock, Thomas ^{[1
]}

Dehn, Angelika ^{[3
]}

Castracane, Paolo ^{[3
]}

Surawicz, Gregor ^{[4
]}

Harig, Roland ^{[4
]}

Baier, Bianca C. ^{[5
,6
]}

Bes, Caroline ^{[7
]}

Bi, Jianrong ^{[8
]}

Boesch, Hartmut ^{[9
]}

Butz, Andre ^{[10
]}

Cai, Zhaonan ^{[11
]}

Chen, Jia ^{[12
]}

Crowell, Sean M. ^{[13
]}

Deutscher, Nicholas M. ^{[14
]}

Ene, Dragos ^{[15
]}

Franklin, Jonathan E. ^{[16
]}

Garcia, Omaira ^{[17
]}

Griffith, David ^{[14
]}

Grouiez, Bruno ^{[18
]}

Grutter, Michel ^{[19
]}

Hamdouni, Abdelhamid ^{[18
]}

Houweling, Sander ^{[20
,21
]}

Humpage, Neil ^{[9
]}

Jacobs, Nicole ^{[22
,23
,24
]}

Jeong, Sujong ^{[25
]}

Joly, Lilian ^{[18
]}

Jones, Nicholas B. ^{[14
]}

Jouglet, Denis ^{[7
]}

Kivi, Rigel ^{[26
]}

Kleinschek, Ralph ^{[10
]}

Lopez, Morgan ^{[27
]}

Medeiros, Diogo J. ^{[28
]}

Morino, Isamu ^{[2
]}

Mostafavipak, Nasrin ^{[29
]}

Muller, Astrid ^{[2
]}

Ohyama, Hirofumi ^{[2
]}

Palmer, Paul, I ^{[30
,31
]}

Pathakoti, Mahesh ^{[32
]}

Pollard, David F. ^{[33
]}

Raffalski, Uwe ^{[34
]}

Ramonet, Michel ^{[27
]}

Ramsay, Robbie ^{[35
]}

Sha, Mahesh Kumar ^{[36
]}

Shiomi, Kei ^{[37
]}

Simpson, William ^{[22
,23
]}

Stremme, Wolfgang ^{[19
]}

机构：

[1] Karlsruhe Inst Technol KIT, Inst Meteorol & Climate Res IMK ASF, Karlsruhe, Germany

[2] Natl Inst Environm Studies NIES, Tsukuba, Ibaraki, Japan

[3] European Space Agcy, Ctr Earth Observat ESA ESRIN, Frascati, Italy

[4] Bruker Opt GmbH, Ettlingen, Germany

[5] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA

[6] NOAA, Earth Syst Res Lab, Global Monitoring Div, Boulder, CO USA

[7] Ctr Natl Etud Spatiales CNES, Paris, France

[8] Lanzhou Univ, Coll Atmospher Sci, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou, Peoples R China

[9] Univ Leicester, Natl Ctr Earth Observat, Leicester, Leics, England

[10] Heidelberg Univ, Inst Umweltphys, Heidelberg, Germany

[11] Chinese Acad Sci, Carbon Neutral Res Ctr, Inst Atmospher Phys, Beijing, Peoples R China

[12] Tech Univ Munich, Dept Elect & Comp Engn, Environm Sensing & Modeling, Munich, Germany

[13] Univ Oklahoma, Coll Atmospher & Geog Sci, Norman, OK 73019 USA

[14] Univ Wollongong, Ctr Atmospher Chem, Wollongong, NSW, Australia

[15] Natl Inst R&D Optoelect INOE 2000, Ilfov, Romania

[16] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[17] State Meteorol Agcy Spain AEMet, Izana Atmospher Res Ctr IARC, Santa Cruz De Tenerife, Spain

[18] Univ Reims, Grp Spectrometrie Mol & Atmospher GSMA, UMR CNRS 7331, Moulin Housse,BP 1039, F-51687 Reims 2, France

[19] Univ Nacl Autonoma Mexico, Ctr Ciencias Atmosfera, Mexico City, DF, Mexico

[20] SRON Netherlands Inst Space Res, Utrecht, Netherlands

[21] Vrije Univ Amsterdam, Dept Earth Sci, Amsterdam, Netherlands

[22] Univ Alaska Fairbanks, Dept Chem, Fairbanks, AK USA

[23] Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA

[24] Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA

[25] Seoul Natl Univ, Grad Sch Environm Studies, Dept Environm Planning, Seoul, South Korea

[26] Finnish Meteorol Inst, Space & Earth Observat Ctr, Sodankyla, Finland

[27] Univ Paris Saclay, Lab Sci Climat & Environm LSCE IPSL, CNRS, CEA,UVSQ, Gif Sur Yvette, France

[28] Univ Sao Paulo, Inst Astron, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo, Brazil

[29] Univ Toronto, Dept Phys, Toronto, ON, Canada

[30] Univ Edinburgh, Sch GeoSci, Edinburgh, Midlothian, Scotland

[31] Univ Edinburgh, Natl Ctr Earth Observat, Edinburgh, Midlothian, Scotland

[32] ISRO, Natl Remote Sensing Ctr NRSC, Earth & Climate Sci Area ECSA, Hyderabad, India

[33] Natl Inst Water & Atmospher Res Ltd NIWA, Lauder, New Zealand

[34] Swedish Inst Space Phys, Kiruna, Sweden

[35] NERC Field Spect Facil, James Hutton Rd, Edinburgh EH9 3FE, Midlothian, Scotland

[36] Royal Belgian Inst Space Aeron BIRA IASB, Brussels, Belgium

[37] Japan Aerosp Explorat Agcy JAXA, Earth Observat Res Ctr, Tsukuba, Ibaraki, Japan

[38] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, HFIPS, Hefei, Peoples R China

[39] Sorbonne Univ, Lab Etud Rayonnement & Matiere Astrophys & Atmosp, Paris, France

[40] Botswana Int Univ Sci & Technol, Dept Earth & Environm Sci, Palapye, Botswana

[41] Environm & Climate Change Canada, Climate Res Div, Toronto, ON, Canada

[42] Chuo Univ, Res & Dev Initiat, Bunkyo Ku, Tokyo, Japan

[43] Chinese Acad Sci, Shanghai Carbon Data Res Ctr, Shanghai Adv Res Inst SARI, Shanghai, Peoples R China

[44] China Meteorol Adm, Natl Satellite Meteorol Ctr NSMC, Beijing, Peoples R China

[45] Karlsruhe Inst Technol KIT, Div Nat & Built Environm 4, Karlsruhe, Germany

来源：

ATMOSPHERIC MEASUREMENT TECHNIQUES | 2022年 / 15卷 / 08期

基金：

澳大利亚研究理事会; 巴西圣保罗研究基金会;

关键词：

INSTRUMENTAL LINE-SHAPE; FOURIER-TRANSFORM SPECTROMETER; PORTABLE FTIR SPECTROMETERS; NEAR-INFRARED SENSOR; ATMOSPHERIC COMPOSITION; METHANE EMISSIONS; PERFORMANCE; RETRIEVAL; MISSION; VALIDATION;

D O I：

10.5194/amt-15-2433-2022

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

In this study, an extension on the previously reported status of the COllaborative Carbon Column Observing Network's (COCCON) calibration procedures incorporating refined methods is presented. COCCON is a global network of portable Bruker EM27/SUN FTIR spectrometers for deriving column-averaged atmospheric abundances of greenhouse gases. The original laboratory open-path lamp measurements for deriving the instrumental line shape (ILS) of the spectrometer from water vapour lines have been refined and extended to the secondary detector channel incorporated in the EM27/SUN spectrometer for detection of carbon monoxide (CO). The refinements encompass improved spectroscopic line lists for the relevant water lines and a revision of the laboratory pressure measurements used for the analysis of the spectra. The new results are found to be in good agreement with those reported by Frey et al. (2019) and discussed in detail. In addition, a new calibration cell for ILS measurements was designed, constructed and put into service. Spectrometers calibrated since January 2020 were tested using both methods for ILS characterization, open-path (OP) and cell measurements. We demonstrate that both methods can detect the small variations in ILS characteristics between different spectrometers, but the results of the cell method indicate a systematic bias of the OP method. Finally, a revision and extension of the COCCON network instrument-to-instrument calibration factors for XCO2, XCO and XCH4 is presented, incorporating 47 new spectrometers (of 83 in total by now). This calibration is based on the reference EM27/SUN spectrometer operated by the Karlsruhe Institute of Technology (KIT) and spectra collected by the collocated TCCON station Karlsruhe. Variations in the instrumental characteristics of the reference EM27/SUN from 2014 to 2017 were detected, probably arising from realignment and the dual-channel upgrade performed in early 2018. These variations are considered in the evaluation of the instrument-specific calibration factors in order to keep all tabulated calibration results consistent.

引用

页码：2433 / 2463

页数：31

共 41 条

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