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.
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.
Millán et al. (2012), New Aura Microwave Limb Sounder observations of BrO and
implications for Bry, Atmos. Meas. Tech. 5, 1741-1751, doi:10.5194/amt-5-1741-2012.
Millán et al. (2015), Stratospheric and mesospheric HO2 observations from the Aura
Microwave Limb Sounder, Atmos. Chem. Phys., 15, 2889-2902, 2015, doi:10.5194/acp-