atmospheric chemistry
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The Microwave Limb Sounder (MLS) is an instrument on board the Upper Atmosphere Research Satellite (UARS) which measured global ClO, O3, H2O, temperature and SO2. Data are version 4 and public (gridded in time or latitude along the satellite track) between 80S - 80N, approximately 10-60 km in the vertical, from October 1991 to June 1997. This directory tree now contains Version 4 MLS data files, in subdirectories for constituent and year, for FTP to remote machines. The data is held in IEEE binary files as supplied by the Goddard DAAC. Remember to switch to BINARY mode when transferring these files by FTP. New software to read the data files is also available.
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Atmospheric nitrous acid (HONO) amount fraction measured in the clean air sector at Halley VI Research Station between 22 January and 3 February 2022. The data was collected using a Long Path Absorption Photometer (LOPAP), the instrument inlet height above the snow was changed during the measurement period, this is indicated in the dataset. Temperature and wind speed data were collected are included to enable the HONO flux from the snow to be calculated. This work was supported by the Natural Environment Research Council and the ARIES Doctoral Training Partnership [grant number NE/S007334/1]. The fieldwork at Halley VI Research Station was funded by the Collaborative Antarctic Science Scheme (CASS).