Microwave Limb Sounder

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Microwave Limb Sounder (MLS) experiments measure naturally-occurring microwave thermal emission from the limb (edge) of Earth's atmosphere to remotely sense vertical profiles of atmospheric gases, temperature, pressure, and cloud ice. The overall objective of these experiments is to provide information that will help improve our understanding of Earth's atmosphere and global change.

MLS Instruments & Research

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Latest Announcements

The Aura Microwave Limb Sounder (MLS) team is pleased to announce the release of a new "version 5" MLS dataset.

Reprocessing of the entire 15+ year MLS record with the v5 algorithms is expected to complete in mid-to-late 2021. Until that reprocessing is complete, incoming MLS data will continue to be processed using older v4 algorithms as well as v5, in order to facilitate scientific analyses using a continuous dataset.

A preliminary assessment of the MLS v5 data quality, along with guidelines for appropriate use of the data, is given in the data quality document. Updates to this document are planned in the coming months, when more v5 data will be available for characterization and re-validation and updated estimates of systematic uncertainty are completed.

Data, available from the GES-DISC, can be found through NASA's Earth Data Search tool.

Latest Publications

  1. Dhomse, S., C. Arosio, W. Feng, A. Rozanov, M. Weber and M. Chipperfield
    ML-TOMCAT: Machine-Learning-Based Satellite-Corrected Global Stratospheric Ozone Profile Dataset from a Chemical Transport Model
    Earth System Science Data doi:10.5194/essd-2021-225 in review
  2. Emili, E. and M.E. Aabaribaoune
    Impact of IASI thermal infrared measurements on global ozone reanalyses
    Geoscientific Model Development doi:10.5194/gmd-2020-315 in review
  3. Ghysels, M., G. Durry, N. Amarouche, J. Samake, F. Frérot and E. Rivière
    A lightweight balloon-borne mid-infrared hygrometer to probe the middle atmosphere: Pico-Light H&ltsub&gt2&lt/sub&gtO. Comparison with Aura-MLS v4 and v5 satellite measurements
    Atmospheric Measurement Techniques Discussions doi:10.5194/amt-2020-269 in review
  4. Khaykin, S., E. Moyer, M. Krämer, B. Clouser, S. Bucci, B. Legras, A. Lykov, A. Afchine, F. Cairo, I. Formanyuk, V. Mitev, R. Matthey, C. Rolf, C. Singer, N. Spelten, V. Volkov, V. Yushkov and F. Stroh
    Persistence of moist plumes from overshooting convection in the Asian monsoon anticyclone
    Atmos. Chem. Phys. Discuss. doi:10.5194/acp-2021-653 in review
  5. McCormack, J., V.L. Harvey, N. Pedatella, D. Koshin, K. Sato, L. Coy, S. Watanabe, C. Randall, F. Sassi and L. Holt
    Intercomparison of Middle Atmospheric Meteorological Analyses for the Northern Hemisphere Winter 2009–2010
    Atmos. Chem. Phys. Discuss. doi:10.5194/acp-2021-224 in review