Interactive comment on “Diurnal variations of stratospheric ozone measured by ground-based microwave remote sensing at the Mauna Loa NDACC site: measurement validation and GEOSCCM model comparison” by A. Parrish et al
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چکیده
The diurnal variation of ozone in the stratosphere and lower mesosphere is analyzed using data from a ground-based microwave radiometer operating at the Mauna Loa NDACC station since the 1990s. Presented are considerations concerning the internal quality of the measurements, a verification study of the quality of the observed diurnal variability in comparison with external data sets obtained from different satellite instruments, and model comparisons aiming at testing the modelled ozone diurnal variation in a chemistry-climate model.
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Interactive comment on “Diurnal variations of stratospheric ozone measured by ground-based microwave remote sensing at the Mauna Loa NDACC site: measurement validation and GEOSCCM model comparison” by A. Parrish et al
Response: Passive microwave instruments can observe spectral lines of ozone (and other species) in emission, as the energy levels of the rotational transitions at millimeter wavelengths are so closely spaced that they are excited by intermolecular collisions at stratospheric temperatures, and are in local thermodynamic equilibrium. Because microwave emission observations have no dependence on s...
متن کاملDiurnal variations of stratospheric ozone measured by ground-based microwave remote sensing at the Mauna Loa NDACC site: measurement validation and GEOSCCM model comparison
There is presently renewed interest in diurnal variations of stratospheric and mesospheric ozone for the purpose of supporting homogenization of records of various ozone measurements that are limited by the technique employed to being made at certain times of day. We have made such measurements for 19 years using a passive microwave remote sensing technique at the Mauna Loa Observatory (MLO) in...
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21 There is presently renewed interest in diurnal variations of stratospheric and mesospheric ozone 22 for the purpose of supporting homogenization of records of various ozone measurements that are 23 limited by the technique employed to being made at certain times of day. We have made such 24 measurements for 19 years using a passive microwave remote sensing technique at the Mauna 25
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