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Microwave Limb Sounder

Welcome

The 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.

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BrO HO2 CH3Cl CH3CN CH3OH
O3 H2O OH HOCl ClO
IWC HCl RHi HCN CO
N2O GPH Temperature HNO3 All

NEAR REAL-TIME DATA VIEWER

Current GMT day:    
Maps @ 46hPa; SO2 @ 147hPa and CO @ 215hPa

Latest Publications

  1. Davis, S.M., R. Damadeo, D. Flittner, K.H. Rosenlof, M. Park, W.J. Randel, E.G. Hall, D. Huber, D.F. Hurst, A.F. Jordan, S. Kizer, L.F. Millan, H. Selkirk, G. Taha, K.A. Walker, and H. Vömel, "Validation of SAGE III/ISS Solar Water Vapor Data With Correlative Satellite and Balloon‐Borne Measurements," Journal of Geophysical Research: Atmospheres 126, 2, doi:10.1029/2020jd033803, 2021.   reprint  

  2. Feng, W., S. Dhomse, C. Arosio, M. Weber, J. Burrows, M. Santee, and M. Chipperfield, "Arctic Ozone Depletion in 2019/20: Roles of Chemistry, Dynamics and the Montreal Protocol," Geophys. Res. Lett. 48, 4, doi:10.1029/2020gl091911, 2021.   reprint  

  3. Liu, M., and D. Hu, "Contrast relationships between Arctic Oscillation and ozone in the stratosphere over the Arctic in early and mid‐to‐late winter," Journal of Geophysical Research: Atmospheres, doi:10.1029/2020jd033426, 2021.   reprint  

  4. Dion, I., C. Dallet, P. Ricaud, F. Carminati, T. Dauhut, and P. Haynes, "Ice injected into the tropopause by deep convection – Part 2: Over the Maritime Continent," Atmos. Chem. Phys. 21, 3, 2191-2210, doi:10.5194/acp-21-2191-2021, 2021.   reprint  

  5. Han, Y., F. Xie, and J. Zhang, "Has Stratospheric HCl in the Northern Hemisphere Been Increasing Since 2005?," Front. Earth Sci. 8, doi:10.3389/feart.2020.609411, 2020.   reprint  

> More Publications

MLS v5 Data Release


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.

> Full Announcement




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