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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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Start Date
End Date
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. Park, M., H. Worden, D. Kinnison, B. Gaubert, S. Tilmes, L. Emmons, M. Santee, L. Froidevaux, and C. Boone, "Fate of pollution emitted during the 2015 Indonesian Fire Season," Journal of Geophysical Research: Atmospheres, doi:10.1029/2020jd033474, 2021.   reprint  

  2. Singh, B.B., R. Krishnan, D.C. Ayantika, R.K. Vellore, T.P. Sabin, K.R. Kumar, S. Brunamonti, S. Hanumanthu, T. Jorge, P. Oelsner, S. Sonbawne, M. Naja, S. Fadnavis, and T.P.M.K.S. , "Linkage of water vapor distribution in the lower stratosphere to organized Asian summer monsoon convection," Climate Dynamics, doi:10.1007/s00382-021-05772-2, 2021.   reprint  

  3. Babu, S.R., M.V. Ratnam, G. Basha, S. Pani, and N. Lin, "Structure, dynamics, and trace gas variability within the Asian summer monsoon anticyclone in the extreme El Niño of 2015–2016," Atmos. Chem. Phys. 21, 7, 5533-5547, doi:10.5194/acp-21-5533-2021, 2021.   reprint  

  4. Tang, Q., M. Prather, J. Hsu, D. Ruiz, P. Cameron-Smith, S. Xie, and J. Golaz, "Evaluation of the interactive stratospheric ozone O3v2 module in the E3SM version 1 Earth system model," Geoscientific Model Development 14, 3, 1219-1236, doi:10.5194/gmd-14-1219-2021, 2021.   reprint  

  5. Lu, J., F. Xie, H. Tian, and J. Luo, "Impacts of Ozone Changes in the Tropopause Layer on Stratospheric Water Vapor," Atmosphere 12, 3, 291, doi:10.3390/atmos12030291, 2021.   reprint  

> More Publications

MLS v5 Data Availability


The MLS team recommends that v5 data be used in preference to v4 for scientific studies. In particular, the v5 algorithms include a correction for a drift and some biases in the H2O product that was present in v4 and earlier versions. Similarly, a drift in v4 N2O has been reduced, although not eliminated. In order to assess the efficacy of these corrections going forward, the team plans to continue processing incoming MLS data with both the v4 and v5 algorithms for the foreseeable future.

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

> Full Announcement




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