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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. Ryan, N., M. Palm, U. Raffalski, R. Larsson, G. Manney, L. Millan, and J. Notholt, "Strato-mesospheric carbon monoxide profiles above Kiruna, Sweden 67.8 ° N, 20.4 ° E, since 2008," Earth System Science Data 9, 1, 77-89, doi:10.5194/essd-9-77-2017, 2017.   reprint  

  2. Sato, K., M. Kohma, M. Tsutsumi, and T. Sato, "Frequency spectra and vertical profiles of wind fluctuations in the summer Antarctic mesosphere revealed by MST radar observations," Journal of Geophysical Research: Atmospheres 122, 1, 3-19, doi:10.1002/2016jd025834, 2017.   reprint  

  3. James, A., D. Moon, W. Feng, P. Lakey, V. Frankland, D. Heard, and J. Plane, "The uptake of HO2 on meteoric smoke analogues," Journal of Geophysical Research: Atmospheres 122, 1, 554-565, doi:10.1002/2016jd025882, 2017.   reprint  

  4. Hocke, K., "Response of the middle atmosphere to the geomagnetic storm of November 2004," J. Atmos. Solar-Terr. Phys. 154, 86-91, doi:10.1016/j.jastp.2016.12.013, 2017.   reprint  

  5. Orsolini, Y., V. Limpasuvan, K. Pérot, P. Espy, R. Hibbins, S. Lossow, K.R. Larsson, and D. Murtagh, "Modelling the descent of nitric oxide during the elevated stratopause event of January 2013," J. Atmos. Solar-Terr. Phys. 155, 50-61, doi:10.1016/j.jastp.2017.01.006, 2017.   reprint  

> More Publications

New MLS Level 3 (v4) BrO and HO2 pre-average radiances products


The science team for the Microwave Limb Sounder (MLS) on the Aura satellite is pleased to announce the release of new bromine monoxide (BrO) and hydroperoxyl (HO2) MLS "Version 4" pre-average radiances datasets. The retrieval algorithm produces a pair of zonal mean abundance fields each day - one for the daytime part of the orbit and the other for the nighttime part - from 10o latitude bin zonal mean radiances. By sacrificing spatial resolution, the noise level and the biases in the retrieved profiles are greatly reduced.

Notable advantages over the standard level 2 products include the first long-term nighttime HO2 satellite record and a wider pressure range (21 - 0.003 hPa) for the HO2 dataset (the standard Level 2 product covers only 21 - 0.046 hPa). Further information can be found at Millán et al. (2012) and Millán et al. (2015).

These new datasets are available at the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC): ML3DZMBRO and ML3DZMHO2. Users are urged to read their data quality documents (available from the same location) and contact the MLS science team with any questions.


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