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.
NEAR REAL-TIME DATA VIEWER
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| Maps @ 46hPa; SO2 @ 147hPa and CO @ 215hPa |
Latest Publications
- Anderson, J., D. Weisenstein, K. Bowman, C. Homeyer, J. Smith, D. Wilmouth, D. Sayres, J.E. Klobas, S. Leroy, J. Dykema, and S. Wofsy, "Stratospheric ozone over the United States in summer linked to observations of convection and temperature via chlorine and bromine catalysis," Proc. Nat. Acad. Sci. undefined, 201619318, doi:10.1073/pnas.1619318114, in press.
- Pancheva, D., P. Mukhtarov, and D. Siskind, "Climatology of the quasi-2-day waves observed in the MLS/Aura measurements 2005–2014," J. Atmos. Solar-Terr. Phys. undefined, doi:10.1016/j.jastp.2017.05.002, in press.
- Davis, S., M. Hegglin, M. Fujiwara, R. Dragani, Y. Harada, C. Kobayashi, C. Long, G. Manney, E. Nash, G. Potter, S. Tegtmeier, T. Wang, K. Wargan, and J. Wright, "Assessment of upper tropospheric and stratospheric water vapourand ozone in reanalyses as part of S-RIP," Atmos. Chem. Phys. Discuss. undefined, 1-57, doi:10.5194/acp-2017-377, in review.
- Manney, G., M. Hegglin, Z. Lawrence, K. Wargan, L. Millán, M. Schwartz, M. Santee, A. Lambert, S. Pawson, B. Knosp, R. Fuller, and W. Daffer, "Reanalysis comparisons of upper tropospheric/lower stratospheric jets and multiple tropopauses," Atmos. Chem. Phys. Discuss. undefined, 1-39, doi:10.5194/acp-2017-400, in review.
- Steinbrecht, W., L. Froidevaux, R. Fuller, R. Wang, J. Anderson, C. Roth, A. Bourassa, D. Degenstein, R. Damadeo, J. Zawodny, S. Frith, R. McPeters, P. Bhartia, J. Wild, C. Long, S. Davis, K. Rosenlof, V. Sofieva, K. Walker, N. Rahpoe, A. Rozanov, M. Weber, A. Laeng, T. von Clarmann, G. Stiller, N. Kramarova, S. Godin-Beekmann, T. Leblanc, R. Querel, D. Swart, I. Boyd, K. Hocke, N. Kämpfer, E.M. Barras, L. Moreira, G. Nedoluha, C. Vigouroux, T. Blumenstock, M. Schneider, O. Garcìa, N. Jones, E. Mahieu, D. Smale, M. Kotkamp, J. Robinson, I. Petropavlovskikh, N. Harris, B. Hassler, D. Hubert, and F. Tummon, "An update on ozone profile trends for the period 2000 to 2016," Atmos. Chem. Phys. Discuss. undefined, 1-24, doi:10.5194/acp-2017-391, in review.
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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