Dataset Open Access

The ground-based MUSICA dataset: Tropospheric water vapour isotopologues (H216O, H218O and HD16O) as obtained from NDACC/FTIR solar absorption spectra

Barthlott, Sabine; Schneider, Matthias; Hase, Frank; Blumenstock, Thomas; Mengistu Tsidu, Gizaw; Grutter de la Mora, Michel; Strong, Kim; Notholt, Justus; Mahieu, Emmanuel; Jones, Nicholas; Smale, Dan

MUSICA (“MUlti-platform remote sensing of Isotopologues for investigating the Cycle of Atmospheric water”, http://www.imk-asf.kit.edu/english/musica.php) is a European Research Council (ERC) project. The project has developed tropospheric water vapour isotopologue retrievals (H2O and H2O-δD pairs) using ground-based FTIR spectra as well as thermal nadir spectra measured by the satellite sensor IASI. H2O-δD pairs allow studying tropospheric water transport pathways and in combination with models they can improve our understanding of important climate feedback mechanisms (see also WCRP Grand Challenges: http://www.wcrp-climate.org/grand-challenges).

For MUSICA, the FTIR spectra have been analysed centrally at KIT using uniform and consistent retrieval settings, thereby guaranteeing ultimate consistency of the retrieval products generated for different FTIR stations. The FTIR products are H2O profiles for the lower, middle and upper troposphere as well as H2O-δD pairs for the lower and middle troposphere. The data have been produced for 12 FTIR stations and date back to 1996.

The dataset has been extensively characterized and validated (theoretically and empirically). Furthermore, the spectra have been used to perform uniform retrievals of XCO2, which is then used for documenting the long-term stability of these kind of FTIR data. The data are provided in the form of two data types. The first type ("ftir.iso.h2o") is best-suited for tropospheric water vapour distribution studies that disregard the different isotopologues (comparison with radiosonde data, analyses of water vapour variability and trends, etc.). The second type ("ftir.iso.post.h2o") is needed for analysing moisture pathways by means of H2O-δD pair distribution.

The data format is hdf4 and the files have been generated in compliance with GEOMS (Generic Earth Observation Metadata Standard). The complete MUSICA NDACC/FTIR dataset is also publicly available via the NDACC database (ftp://ftp.cpc.ncep.noaa.gov/ndacc/MUSICA).

Details on the characteristics of the dataset are described in the paper "Tropospheric water vapour isotopoloque data (H\(_{2}^{16}\)O, H\(_{2}^{18}\)O and HD16O) as obtained from NDACC/FTIR solar absorption spectra" that has been prepared for ESSD in the context of the special issue “25th anniversary of NDACC”.

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musica_addisababa.zip md5:41d9083fecdc6b1b8889f2cf94b454f0 47.6 MB Download
musica_altzomoni.zip md5:4754cebb0ac926d7e03cb681f06b28d7 94.3 MB Download
musica_arrivalheights.zip md5:51a86842a2032951af32cdd48cde387a 49.5 MB Download
musica_bremen.zip md5:a1ff38c35dc61359f204265d69c4e0c2 77.5 MB Download
musica_eureka.zip md5:daeadb4b33932e0778fa8c6045e45666 231.3 MB Download
musica_izana.zip md5:8dd1d740c2455fadfaa21c6a6e2ee39c 831.0 MB Download
musica_jungfraujoch.zip md5:2574f2480e24060e3af09eca12175d69 140.8 MB Download
musica_karlsruhe.zip md5:411d8439f89011cf0bb6daca43d718ff 232.2 MB Download
musica_kiruna.zip md5:1ba0c0bbe35070cf86dad91a7df658ff 244.2 MB Download
musica_lauder.zip md5:59a9a7f942a9acf29b837359d0f04a6c 435.8 MB Download
musica_nyalesund.zip md5:1b43ed205ec5a86188eeca0fda0c9980 96.4 MB Download
musica_wollongong.zip md5:336096eb3b6ebfbb086a65a0df97ef3a 768.9 MB Download
  • S. Barthlott, M. Schneider, F. Hase, A. Wiegele, E. Christner, Y. González, T. Blumenstock, S. Dohe, O. E. García, E. Sepúlveda, K. Strong, J. Mendonca, D. Weaver, M. Palm, N. M. Deutscher, T. Warneke, J. Notholt, B. Lejeune, E. Mahieu, N. Jones, D. W. T. Griffith, V. A. Velazco, D. Smale, J. Robinson, R. Kivi, P. Heikkinen, and U. Raffalski: Using XCO2 retrievals for assessing the long-term consistency of NDACC/FTIR data sets, Atmos. Meas. Tech., 8, 1555-1573, doi:10.5194/amt-8-1555-2015, 2015 .
  • Schneider, M., González, Y., Dyroff, C., Christner, E., Wiegele, A., Barthlott, S., García, O. E., Sepúlveda, E., Hase, F., Andrey, J., Blumenstock, T., Guirado, C., Ramos, R., and Rodríguez, S.: Empirical validation and proof of added value of MUSICA's tropospheric δD remote sensing products, Atmos. Meas. Tech., 8, 483-503, doi:10.5194/amt-8-483-2015, 2015 .
  • Schneider, M., S. Barthlott, F. Hase, Y. González, K. Yoshimura, O. E. García, E. Sepúlveda, A. Gómez-Peláez, M. Gisi, R. Kohlhepp, S. Dohe, T. Blumenstock, A. Wiegele, E. Christner, K. Strong, D. Weaver, M. Palm, N. M. Deutscher, T. Warneke, J. Notholt, B. Lejeune, P. Demoulin, N. Jones, D. W. T. Griffith, D. Smale, and J. Robinson: Ground-based remote sensing of tropospheric water vapour isotopologues within the project MUSICA, Atmos. Meas. Tech., 5, 3007-3027, doi:10.5194/amt-5-3007-2012, 2012 .

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