Accomplishments of the MUSICA project to provide accurate, long-term, global and high-resolution observations of tropospheric {H2xch li O,δD} pairs - A review

Matthias Schneider, Andreas Wiegele, Sabine Barthlott, Yenny González, Emanuel Christner, Christoph Dyroff, E. Omaira García, Frank Hase, Thomas Blumenstock, Eliezer Sepúlveda, Gizaw Mengistu Tsidu, Samuel Takele Kenea, Sergio Rodríguez, Javier Andrey

Research output: Contribution to journalReview article

21 Citations (Scopus)

Abstract

In the lower/middle troposphere, {H2O,δD} pairs are good proxies for moisture pathways; however, their observation, in particular when using remote sensing techniques, is challenging. The project MUSICA (MUlti-platform remote Sensing of Isotopologues for investigating the Cycle of Atmospheric water) addresses this challenge by integrating the remote sensing with in situ measurement techniques. The aim is to retrieve calibrated tropospheric {H2O,δD} pairs from the middle infrared spectra measured from ground by FTIR (Fourier transform infrared) spectrometers of the NDACC (Network for the Detection of Atmospheric Composition Change) and the thermal nadir spectra measured by IASI (Infrared Atmospheric Sounding Interferometer) aboard the MetOp satellites. In this paper, we present the final MUSICA products, and discuss the characteristics and potential of the NDACC/FTIR and MetOp/IASI {H2O,δD} data pairs. First, we briefly resume the particularities of an {H2O,δD} pair retrieval. Second, we show that the remote sensing data of the final product version are absolutely calibrated with respect to H2O and δD in situ profile references measured in the subtropics, between 0 and 7 km. Third, we reveal that the {H2O,δD} pair distributions obtained from the different remote sensors are consistent and allow distinct lower/middle tropospheric moisture pathways to be identified in agreement with multi-year in situ references. Fourth, we document the possibilities of the NDACC/FTIR instruments for climatological studies (due to long-term monitoring) and of the MetOp/IASI sensors for observing diurnal signals on a quasi-global scale and with high horizontal resolution. Fifth, we discuss the risk of misinterpreting {H2O,δD} pair distributions due to incomplete processing of the remote sensing products.

Original languageEnglish
Pages (from-to)2845-2875
Number of pages31
JournalAtmospheric Measurement Techniques
Volume9
Issue number7
DOIs
Publication statusPublished - Jul 7 2016

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

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    Schneider, M., Wiegele, A., Barthlott, S., González, Y., Christner, E., Dyroff, C., García, E. O., Hase, F., Blumenstock, T., Sepúlveda, E., Mengistu Tsidu, G., Takele Kenea, S., Rodríguez, S., & Andrey, J. (2016). Accomplishments of the MUSICA project to provide accurate, long-term, global and high-resolution observations of tropospheric {H2xch li O,δD} pairs - A review. Atmospheric Measurement Techniques, 9(7), 2845-2875. https://doi.org/10.5194/amt-9-2845-2016