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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

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Maps @ 46hPa; SO2 @ 147hPa and CO @ 215hPa

Latest Publications

  1. Sheese, P., K. Walker, C. Boone, P. Bernath, L. Froidevaux, B. Funke, P. Raspollini, and T. von Clarmann, "ACE-FTS ozone, water vapour, nitrous oxide, nitric acid, and carbon monoxide profile comparisons with MIPAS and MLS," J. Quant. Spectrosc. Radiat. Transfer 186, 63-80, doi:10.1016/j.jqsrt.2016.06.026, 2017.   reprint  

  2. Akiyoshi, H., T. Nakamura, T. Miyasaka, M. Shiotani, and M. Suzuki, "A nudged chemistry-climate model simulation of chemical constituent distribution at northern high-latitude stratosphere observed by SMILES and MLS during the 2009/2010 stratospheric sudden warming," Journal of Geophysical Research: Atmospheres, doi:10.1002/2015jd023334, in press.

  3. Minschwaner, K., G.L. Manney, I. Petropavlovskikh, L.A. Torres, Z.D. Lawrence, B. Sutherland, A.M. Thompson, B.J. Johnson, Z. Butterfield, M.K. Dubey, L. Froidevaux, A. Lambert, W.G. Read, and M.J. Schwartz, "Signature of a tropical Pacific cyclone in the composition of the upper troposphere over Socorro, NM," Geophys. Res. Lett. undefined, doi:10.1002/2015gl065824, in press.

  4. Holmen, S.E., C.M. Hall, and M. Tsutsumi, "Neutral atmosphere temperature change at 90 km, 70° N, 19° E, 2003–2014," Atmos. Chem. Phys. Discuss. 15, 11, 15289-15317, doi:10.5194/acpd-15-15289-2015, in review.

  5. McLandress, C., T.G. Shepherd, A.I. Jonsson, T. von Clarmann, and B. Funke, "A method for merging nadir-sounding climate records, with an application to the global-mean stratospheric temperature data sets from SSU and AMSU," Atmos. Chem. Phys. Discuss. 15, 7, 10085-10122, doi:10.5194/acpd-15-10085-2015, in review.

> 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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