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Validation of sciamachy HDO/H₂O measurements using the TCCON and NDACC-MUSICA networks

Scheepmaker, R.A.; Frankenberg, C.; Deutscher, N.M.; Schneider, M.; Barthlott, S.; Blumenstock, T.; Garcia, O.E.; Hase, F.; Jones, N.; Mahieu, E.; Notholt, J.; Velazco, V.; Landgraf, J.; Aben, I.

Measurements of the atmospheric HDO/H$_{2}$O ratio help us to better understand the hydrological cycle and improve models to correctly simulate tropospheric humidity and therefore climate change. We present an updated version of the column-averaged HDO/H$_{2}$O ratio data set from the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY). The data set is extended with 2 additional years, now covering 2003–2007, and is validated against co-located ground-based total column δD measurements from Fourier transform spectrometers (FTS) of the Total Carbon Column Observing Network (TCCON) and the Network for the Detection of Atmospheric Composition Change (NDACC, produced within the framework of the MUSICA project). Even though the time overlap among the available data is not yet ideal, we determined a mean negative bias in SCIAMACHY δD of -35±30‰ compared to TCCON and -69±15‰ compared to MUSICA (the uncertainty indicating the station-to-station standard deviation). The bias shows a latitudinal dependency, being largest (~-60 to -80 ‰) at the highest latitudes and smallest (~-20 to -30 ‰) at the lowest latitudes. ... mehr

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DOI: 10.5445/IR/1000058085
DOI: 10.5194/amt-8-1799-2015
Zitationen: 12
Zitationen: 11
Cover der Publikation
Zugehörige Institution(en) am KIT Fakultät für Physik (PHYSIK)
Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 1867-1381, 1867-8548
KITopen-ID: 1000058085
HGF-Programm 12.03.01 (POF III, LK 01) Long term observations of tropospheric
Erschienen in Atmospheric measurement techniques
Verlag Copernicus Publications
Band 8
Heft 4
Seiten 1799-1818
Nachgewiesen in Web of Science
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