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Intercomparison of low- and high-resolution infrared spectrometers for ground-based solar remote sensing measurements of total column concentrations of CO2, CH4, and CO

Sha, Mahesh Kumar; De Mazière, Martine; Notholt, Justus; Blumenstock, Thomas; Chen, Huilin; Dehn, Angelika; Griffith, David W. T.; Hase, Frank; Heikkinen, Pauli; Hermans, Christian; Hoffmann, Alex; Huebner, Marko; Jones, Nicholas; Kivi, Rigel; Langerock, Bavo; Petri, Christof; Scolas, Francis; Tu, Qiansi; Weidmann, Damien

Abstract:
The Total Carbon Column Observing Network (TCCON) is the baseline ground-based network of instruments that record solar absorption spectra from which accurate and precise column-averaged dry-air mole fractions of CO$_{2}$ (XCO$_{2}$), CH$_{4}$ (XCH$_{4}$), CO (XCO), and other gases are retrieved. The TCCON data have been widely used for carbon cycle science and validation of satellites measuring greenhouse gas concentrations globally. The number of stations in the network (currently about 25) is limited and has a very uneven geographical coverage: the stations in the Northern Hemisphere are distributed mostly in North America, Europe, and Japan, and only 20 % of the stations are located in the Southern Hemisphere, leaving gaps in the global coverage. A denser distribution of ground-based solar absorption measurements is needed to improve the representativeness of the measurement data for various atmospheric conditions (humid, dry, polluted, presence of aerosol), various surface conditions such as high albedo (>0.4) and very low albedo, and a larger latitudinal distribution. More stations in the Southern Hemisphere are also needed, but a further expansion of the network is limited by its costs and logistical requirements. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000125583
Veröffentlicht am 02.11.2020
Originalveröffentlichung
DOI: 10.5194/amt-13-4791-2020
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1867-8548
KITopen-ID: 1000125583
Erschienen in Atmospheric measurement techniques
Band 13
Heft 9
Seiten 4791–4839
Vorab online veröffentlicht am 10.09.2020
Nachgewiesen in Scopus
Web of Science
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